Source Code
Latest 16 from a total of 16 transactions
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|---|---|---|---|---|---|---|---|---|---|
| Submit Guess | 26657402 | 331 days ago | IN | 0 ETH | 0.00000046 | ||||
| Submit Guess | 26656632 | 331 days ago | IN | 0 ETH | 0.00000031 | ||||
| Submit Guess | 26608431 | 332 days ago | IN | 0 ETH | 0.0000006 | ||||
| Submit Guess | 26608362 | 332 days ago | IN | 0 ETH | 0.00000055 | ||||
| Submit Guess | 26603222 | 333 days ago | IN | 0 ETH | 0.00000009 | ||||
| Submit Guess | 26603186 | 333 days ago | IN | 0 ETH | 0.00000016 | ||||
| Submit Guess | 26603174 | 333 days ago | IN | 0 ETH | 0.00000009 | ||||
| Submit Guess | 26577445 | 333 days ago | IN | 0 ETH | 0.00000023 | ||||
| Submit Guess | 26577335 | 333 days ago | IN | 0 ETH | 0.00000013 | ||||
| Submit Guess | 26577202 | 333 days ago | IN | 0 ETH | 0.00000013 | ||||
| Submit Guess | 26577167 | 333 days ago | IN | 0 ETH | 0.00000013 | ||||
| Submit Guess | 26577119 | 333 days ago | IN | 0 ETH | 0.00000007 | ||||
| Submit Guess | 26577032 | 333 days ago | IN | 0 ETH | 0.00000007 | ||||
| Submit Guess | 26576999 | 333 days ago | IN | 0 ETH | 0.00000007 | ||||
| Submit Guess | 26044028 | 345 days ago | IN | 0 ETH | 0.00000059 | ||||
| Submit Guess | 26044011 | 345 days ago | IN | 0 ETH | 0.00000073 |
Cross-Chain Transactions
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Contract Name:
PoeRewards
Compiler Version
v0.8.26+commit.8a97fa7a
Optimization Enabled:
Yes with 200 runs
Other Settings:
cancun EvmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.26;
import {ERC721Reclaimable} from "./ERC721Reclaimable.sol";
import {ECDSA} from "@openzeppelin/contracts/utils/cryptography/ECDSA.sol";
import {MessageHashUtils} from "@openzeppelin/contracts/utils/cryptography/MessageHashUtils.sol";
contract PoeRewards {
/// @notice Poe NFT contract
ERC721Reclaimable public immutable erc721;
/// @notice Amount in ETH paid out for a correct guess
uint256 public immutable payoutAmount;
/// @notice True if the correct answer was already submitted for the token
mapping(uint256 tokenId => bool) public answered;
/// @notice After the rewards period ends the rewards beneficiary can reclaim any unclaimed rewards
uint256 public immutable endsAt;
/// @notice The address that is authorized to reclaim unclaimed rewards when the rewards period ends
address public immutable leftoverRewardsBeneficiary;
uint256 public nonce = 0;
mapping(uint256 tokenId => address answerAddress) private answerAddresses;
constructor(
ERC721Reclaimable _erc721,
uint256 _payoutAmount,
uint256[] memory _tokenIds,
address[] memory _answerAddresses,
uint256 _endsAt,
address _leftoverRewardsBeneficiary
) payable {
require(
_tokenIds.length == _answerAddresses.length,
"Invalid constructor input"
);
require(
msg.value >= _tokenIds.length * _payoutAmount,
"Insufficient funds for payouts"
);
erc721 = _erc721;
payoutAmount = _payoutAmount;
for (uint i = 0; i < _tokenIds.length; ++i) {
answerAddresses[_tokenIds[i]] = _answerAddresses[i];
}
endsAt = _endsAt;
leftoverRewardsBeneficiary = _leftoverRewardsBeneficiary;
}
/**
* The title owner can submit a guess for which Edgar Allan Poe story inspired their token
* art. The signature is an ERC-191 compliant signature of the token ID and the contract nonce.
*
* A valid guess is when the recovered address corresponds to the saved `answerAddress`, which is
* an EOA whose private key seed is a concatenation of the raw story title and its token ID.
*/
function submitGuess(uint256 tokenId, uint8 v, bytes32 r, bytes32 s) external {
require(block.timestamp < endsAt, RewardsEnded());
require(!answered[tokenId], AlreadyAnswered(tokenId));
address titleOwner = erc721.titleOwnerOf(tokenId);
require(msg.sender == titleOwner, NotTitleOwner(tokenId));
if (verifyAnswer(tokenId, nonce, v, r, s)) {
nonce += 1;
answered[tokenId] = true;
(bool success, ) = payable(msg.sender).call{value: payoutAmount}("");
require(success, TransferFailed(msg.sender));
emit TokenAnswered(tokenId);
}
}
function verifyAnswer(uint256 tokenId, uint256 _nonce, uint8 v, bytes32 r, bytes32 s) private view returns (bool) {
bytes32 messageHash = keccak256(abi.encodePacked(tokenId, _nonce));
bytes32 ethSignedMessageHash = MessageHashUtils.toEthSignedMessageHash(messageHash);
address answerAddress = answerAddresses[tokenId];
address signer = ecrecover(ethSignedMessageHash, v, r, s);
return signer == answerAddress;
}
/**
* Once the rewards period is over, the leftoever rewards beneficiary can reclaim rewards. At this point, the rewards
* program has ended and you can no longer submit guesses.
*/
function claimLeftoverRewards() external {
require(msg.sender == leftoverRewardsBeneficiary, NotLeftoverRewardsBeneficiary());
require(block.timestamp > endsAt, RewardsStillClaimable());
uint256 remainingBalance = address(this).balance;
require(remainingBalance > 0, NoRewardsToClaim());
// Send all remaining ETH to leftoverRewardsBeneficiary
(bool success, ) = leftoverRewardsBeneficiary.call{value: remainingBalance}("");
require(success, LeftoverRewardsTransferFailed());
}
}
event TokenAnswered(uint256 indexed tokenId);
error NotTitleOwner(uint256 tokenId);
error NotLeftoverRewardsBeneficiary();
error RewardsStillClaimable();
error RewardsEnded();
error NoRewardsToClaim();
error LeftoverRewardsTransferFailed();
error AlreadyAnswered(uint256 tokenId);
error TransferFailed(address recipient);// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.26;
import {ERC721Enumerable} from "@openzeppelin/contracts/token/ERC721/extensions/ERC721Enumerable.sol";
import {ERC721} from "@openzeppelin/contracts/token/ERC721/ERC721.sol";
import {ERC2981} from "@openzeppelin/contracts/token/common/ERC2981.sol";
import {IERC721Reclaimable} from "./interfaces/IERC721Reclaimable.sol";
contract ERC721Reclaimable is IERC721Reclaimable, ERC721Enumerable {
mapping(uint256 tokenId => address titleOwner) private _titleOwners;
mapping(address titleOwner => mapping(uint256 index => uint256 tokenId)) _ownedTitles;
mapping(uint256 tokenId => uint256 index) _ownedTitlesIndex;
mapping(address titleOwner => uint256 titleBalance) private _titleBalances;
mapping(uint256 tokenId => address operator) private _tokenTitleApprovals;
mapping(address titleOwner => mapping(address titleOperator => bool canOperate)) private _titleOperatorApprovals;
uint256 private immutable _titleTransferFee;
address private immutable _titleFeeRecipient;
constructor(
string memory name,
string memory symbol,
uint256 __titleTransferFee,
address __titleFeeRecipient
) ERC721(name, symbol) {
_titleTransferFee = __titleTransferFee;
_titleFeeRecipient = __titleFeeRecipient;
}
/// @inheritdoc IERC721Reclaimable
function titleTransferFee() external override view returns (uint256) {
return _titleTransferFee;
}
/// @inheritdoc IERC721Reclaimable
function titleTransferFeeRecipient() external override view returns (address) {
return _titleFeeRecipient;
}
/// @inheritdoc IERC721Reclaimable
function claimOwnership(uint256 _tokenId)
public
payable
override
onlyTitleOwnerOrOperatorOrApproved(_tokenId)
{
address titleOwner = _titleOwners[_tokenId];
address assetOwner = this.ownerOf(_tokenId);
_transfer(assetOwner, titleOwner, _tokenId);
emit OwnershipClaim(titleOwner, assetOwner, _tokenId);
}
/// @inheritdoc IERC721Reclaimable
function titleTransferFrom(
address _from,
address _to,
uint256 _tokenId
) public override payable onlyTitleOwnerOrOperatorOrApproved(_tokenId) {
require(_titleOwners[_tokenId] == _from, NotTitleOwner(_from));
require(msg.value >= _titleTransferFee, InsufficientTitleTransferFee(_from, _to, _tokenId, msg.value));
_titleOwners[_tokenId] = _to;
_titleBalances[_to] += 1;
_titleBalances[_from] -= 1;
// Clear approval
delete _tokenTitleApprovals[_tokenId];
// Remove title from sender's enumeration
_removeTokenFromTitleOwnerEnumeration(_from, _tokenId);
_addTokenToTitleOwnerEnumeration(_to, _tokenId);
// Transfer the title transfer fee to the receiver
(bool success, ) = _titleFeeRecipient.call{value: msg.value}("");
require(success, "Transfer failed");
emit TitleTransfer(_from, _to, _tokenId);
}
/// @inheritdoc IERC721Reclaimable
function titleOwnerOf(uint256 _tokenId) public view override returns (address) {
return _titleOwners[_tokenId];
}
/// @inheritdoc IERC721Reclaimable
function titleApprove(address _to, uint256 _tokenId) public payable override {
_tokenTitleApprovals[_tokenId] = _to;
emit TitleApproval(msg.sender, _to, _tokenId);
}
/// @inheritdoc IERC721Reclaimable
function getTitleApproved(uint256 _tokenId) public view override returns (address) {
return _tokenTitleApprovals[_tokenId];
}
/// @inheritdoc IERC721Reclaimable
function setTitleApprovalForAll(address _operator, bool _approved) public override {
_titleOperatorApprovals[msg.sender][_operator] = _approved;
emit TitleApprovalForAll(msg.sender, _operator, _approved);
}
/// @inheritdoc IERC721Reclaimable
function isTitleApprovedForAll(address _titleOwner, address _titleOperator) public view override returns (bool) {
return _titleOperatorApprovals[_titleOwner][_titleOperator];
}
/// @inheritdoc IERC721Reclaimable
function titleBalanceOf(address _titleOwner) public view override returns (uint256) {
return _titleBalances[_titleOwner];
}
function mint(address to, uint256 tokenId) internal {
_mint(to, tokenId);
_titleMint(to, tokenId);
}
function tokenOfTitleOwnerByIndex(address titleOwner, uint256 index) public view returns (uint256) {
if (index >= titleBalanceOf(titleOwner)) {
revert ERC721OutOfBoundsIndex(titleOwner, index);
}
return _ownedTitles[titleOwner][index];
}
function _titleMint(address _to, uint256 _tokenId) internal {
require(_to != address(0), "Cannot mint to 0 address");
require(_titleOwners[_tokenId] == address(0), "Title already minted");
_titleOwners[_tokenId] = _to;
_titleBalances[_to] += 1;
_addTokenToTitleOwnerEnumeration(_to, _tokenId);
emit TitleTransfer(address(0), _to, _tokenId);
}
function _addTokenToTitleOwnerEnumeration(address titleOwner, uint256 token) private {
uint256 index = titleBalanceOf(titleOwner) - 1;
_ownedTitles[titleOwner][index] = token;
_ownedTitlesIndex[token] = index;
}
function _removeTokenFromTitleOwnerEnumeration(address titleOwner, uint256 token) private {
uint256 indexOfTokenToRemove = _ownedTitlesIndex[token];
// no need for - 1 because by the time this is called the decrement in balance has already happeend
uint256 lastIndex = titleBalanceOf(titleOwner);
if (indexOfTokenToRemove != lastIndex) {
uint256 tokenAtLastIndex = _ownedTitles[titleOwner][lastIndex];
_ownedTitles[titleOwner][indexOfTokenToRemove] = tokenAtLastIndex;
_ownedTitlesIndex[tokenAtLastIndex] = indexOfTokenToRemove;
}
delete _ownedTitles[titleOwner][lastIndex];
delete _ownedTitlesIndex[token];
}
modifier onlyTitleOwnerOrOperator(uint256 tokenId) {
address titleOwner = _titleOwners[tokenId];
bool isTitleOwner = titleOwner == msg.sender;
bool isApprovedForAll = this.isTitleApprovedForAll(titleOwner, msg.sender);
require(isTitleOwner || isApprovedForAll, InvalidTitleApprover(msg.sender));
_;
}
modifier onlyTitleOwnerOrOperatorOrApproved(uint256 tokenId) {
address titleOwner = _titleOwners[tokenId];
bool isTitleOwner = titleOwner == msg.sender;
bool isApproved = this.getTitleApproved(tokenId) == msg.sender;
bool isApprovedForAll = this.isTitleApprovedForAll(titleOwner, msg.sender);
require(
isApproved || isTitleOwner || isApprovedForAll,
NotTitleOwnerOrApprovedOrOperator(tokenId, msg.sender)
);
_;
}
error NotTitleOwner(address _address);
error NotTitleOwnerOrApprovedOrOperator(uint256 _tokenId, address _address);
error InvalidTitleApprover(address _address);
error TitleTransferFromInvalidTitleOwner(address _from, address _to, uint256 _tokenId);
error InsufficientTitleTransferFee(address _from, address _to, uint256 _tokenId, uint256 _amount);
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (utils/cryptography/ECDSA.sol)
pragma solidity ^0.8.20;
/**
* @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations.
*
* These functions can be used to verify that a message was signed by the holder
* of the private keys of a given address.
*/
library ECDSA {
enum RecoverError {
NoError,
InvalidSignature,
InvalidSignatureLength,
InvalidSignatureS
}
/**
* @dev The signature derives the `address(0)`.
*/
error ECDSAInvalidSignature();
/**
* @dev The signature has an invalid length.
*/
error ECDSAInvalidSignatureLength(uint256 length);
/**
* @dev The signature has an S value that is in the upper half order.
*/
error ECDSAInvalidSignatureS(bytes32 s);
/**
* @dev Returns the address that signed a hashed message (`hash`) with `signature` or an error. This will not
* return address(0) without also returning an error description. Errors are documented using an enum (error type)
* and a bytes32 providing additional information about the error.
*
* If no error is returned, then the address can be used for verification purposes.
*
* The `ecrecover` EVM precompile allows for malleable (non-unique) signatures:
* this function rejects them by requiring the `s` value to be in the lower
* half order, and the `v` value to be either 27 or 28.
*
* IMPORTANT: `hash` _must_ be the result of a hash operation for the
* verification to be secure: it is possible to craft signatures that
* recover to arbitrary addresses for non-hashed data. A safe way to ensure
* this is by receiving a hash of the original message (which may otherwise
* be too long), and then calling {MessageHashUtils-toEthSignedMessageHash} on it.
*
* Documentation for signature generation:
* - with https://web3js.readthedocs.io/en/v1.3.4/web3-eth-accounts.html#sign[Web3.js]
* - with https://docs.ethers.io/v5/api/signer/#Signer-signMessage[ethers]
*/
function tryRecover(
bytes32 hash,
bytes memory signature
) internal pure returns (address recovered, RecoverError err, bytes32 errArg) {
if (signature.length == 65) {
bytes32 r;
bytes32 s;
uint8 v;
// ecrecover takes the signature parameters, and the only way to get them
// currently is to use assembly.
assembly ("memory-safe") {
r := mload(add(signature, 0x20))
s := mload(add(signature, 0x40))
v := byte(0, mload(add(signature, 0x60)))
}
return tryRecover(hash, v, r, s);
} else {
return (address(0), RecoverError.InvalidSignatureLength, bytes32(signature.length));
}
}
/**
* @dev Returns the address that signed a hashed message (`hash`) with
* `signature`. This address can then be used for verification purposes.
*
* The `ecrecover` EVM precompile allows for malleable (non-unique) signatures:
* this function rejects them by requiring the `s` value to be in the lower
* half order, and the `v` value to be either 27 or 28.
*
* IMPORTANT: `hash` _must_ be the result of a hash operation for the
* verification to be secure: it is possible to craft signatures that
* recover to arbitrary addresses for non-hashed data. A safe way to ensure
* this is by receiving a hash of the original message (which may otherwise
* be too long), and then calling {MessageHashUtils-toEthSignedMessageHash} on it.
*/
function recover(bytes32 hash, bytes memory signature) internal pure returns (address) {
(address recovered, RecoverError error, bytes32 errorArg) = tryRecover(hash, signature);
_throwError(error, errorArg);
return recovered;
}
/**
* @dev Overload of {ECDSA-tryRecover} that receives the `r` and `vs` short-signature fields separately.
*
* See https://eips.ethereum.org/EIPS/eip-2098[ERC-2098 short signatures]
*/
function tryRecover(
bytes32 hash,
bytes32 r,
bytes32 vs
) internal pure returns (address recovered, RecoverError err, bytes32 errArg) {
unchecked {
bytes32 s = vs & bytes32(0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff);
// We do not check for an overflow here since the shift operation results in 0 or 1.
uint8 v = uint8((uint256(vs) >> 255) + 27);
return tryRecover(hash, v, r, s);
}
}
/**
* @dev Overload of {ECDSA-recover} that receives the `r and `vs` short-signature fields separately.
*/
function recover(bytes32 hash, bytes32 r, bytes32 vs) internal pure returns (address) {
(address recovered, RecoverError error, bytes32 errorArg) = tryRecover(hash, r, vs);
_throwError(error, errorArg);
return recovered;
}
/**
* @dev Overload of {ECDSA-tryRecover} that receives the `v`,
* `r` and `s` signature fields separately.
*/
function tryRecover(
bytes32 hash,
uint8 v,
bytes32 r,
bytes32 s
) internal pure returns (address recovered, RecoverError err, bytes32 errArg) {
// EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature
// unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines
// the valid range for s in (301): 0 < s < secp256k1n ÷ 2 + 1, and for v in (302): v ∈ {27, 28}. Most
// signatures from current libraries generate a unique signature with an s-value in the lower half order.
//
// If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value
// with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or
// vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept
// these malleable signatures as well.
if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) {
return (address(0), RecoverError.InvalidSignatureS, s);
}
// If the signature is valid (and not malleable), return the signer address
address signer = ecrecover(hash, v, r, s);
if (signer == address(0)) {
return (address(0), RecoverError.InvalidSignature, bytes32(0));
}
return (signer, RecoverError.NoError, bytes32(0));
}
/**
* @dev Overload of {ECDSA-recover} that receives the `v`,
* `r` and `s` signature fields separately.
*/
function recover(bytes32 hash, uint8 v, bytes32 r, bytes32 s) internal pure returns (address) {
(address recovered, RecoverError error, bytes32 errorArg) = tryRecover(hash, v, r, s);
_throwError(error, errorArg);
return recovered;
}
/**
* @dev Optionally reverts with the corresponding custom error according to the `error` argument provided.
*/
function _throwError(RecoverError error, bytes32 errorArg) private pure {
if (error == RecoverError.NoError) {
return; // no error: do nothing
} else if (error == RecoverError.InvalidSignature) {
revert ECDSAInvalidSignature();
} else if (error == RecoverError.InvalidSignatureLength) {
revert ECDSAInvalidSignatureLength(uint256(errorArg));
} else if (error == RecoverError.InvalidSignatureS) {
revert ECDSAInvalidSignatureS(errorArg);
}
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (utils/cryptography/MessageHashUtils.sol)
pragma solidity ^0.8.20;
import {Strings} from "../Strings.sol";
/**
* @dev Signature message hash utilities for producing digests to be consumed by {ECDSA} recovery or signing.
*
* The library provides methods for generating a hash of a message that conforms to the
* https://eips.ethereum.org/EIPS/eip-191[ERC-191] and https://eips.ethereum.org/EIPS/eip-712[EIP 712]
* specifications.
*/
library MessageHashUtils {
/**
* @dev Returns the keccak256 digest of an ERC-191 signed data with version
* `0x45` (`personal_sign` messages).
*
* The digest is calculated by prefixing a bytes32 `messageHash` with
* `"\x19Ethereum Signed Message:\n32"` and hashing the result. It corresponds with the
* hash signed when using the https://ethereum.org/en/developers/docs/apis/json-rpc/#eth_sign[`eth_sign`] JSON-RPC method.
*
* NOTE: The `messageHash` parameter is intended to be the result of hashing a raw message with
* keccak256, although any bytes32 value can be safely used because the final digest will
* be re-hashed.
*
* See {ECDSA-recover}.
*/
function toEthSignedMessageHash(bytes32 messageHash) internal pure returns (bytes32 digest) {
assembly ("memory-safe") {
mstore(0x00, "\x19Ethereum Signed Message:\n32") // 32 is the bytes-length of messageHash
mstore(0x1c, messageHash) // 0x1c (28) is the length of the prefix
digest := keccak256(0x00, 0x3c) // 0x3c is the length of the prefix (0x1c) + messageHash (0x20)
}
}
/**
* @dev Returns the keccak256 digest of an ERC-191 signed data with version
* `0x45` (`personal_sign` messages).
*
* The digest is calculated by prefixing an arbitrary `message` with
* `"\x19Ethereum Signed Message:\n" + len(message)` and hashing the result. It corresponds with the
* hash signed when using the https://ethereum.org/en/developers/docs/apis/json-rpc/#eth_sign[`eth_sign`] JSON-RPC method.
*
* See {ECDSA-recover}.
*/
function toEthSignedMessageHash(bytes memory message) internal pure returns (bytes32) {
return
keccak256(bytes.concat("\x19Ethereum Signed Message:\n", bytes(Strings.toString(message.length)), message));
}
/**
* @dev Returns the keccak256 digest of an ERC-191 signed data with version
* `0x00` (data with intended validator).
*
* The digest is calculated by prefixing an arbitrary `data` with `"\x19\x00"` and the intended
* `validator` address. Then hashing the result.
*
* See {ECDSA-recover}.
*/
function toDataWithIntendedValidatorHash(address validator, bytes memory data) internal pure returns (bytes32) {
return keccak256(abi.encodePacked(hex"19_00", validator, data));
}
/**
* @dev Returns the keccak256 digest of an EIP-712 typed data (ERC-191 version `0x01`).
*
* The digest is calculated from a `domainSeparator` and a `structHash`, by prefixing them with
* `\x19\x01` and hashing the result. It corresponds to the hash signed by the
* https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`] JSON-RPC method as part of EIP-712.
*
* See {ECDSA-recover}.
*/
function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32 digest) {
assembly ("memory-safe") {
let ptr := mload(0x40)
mstore(ptr, hex"19_01")
mstore(add(ptr, 0x02), domainSeparator)
mstore(add(ptr, 0x22), structHash)
digest := keccak256(ptr, 0x42)
}
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (token/ERC721/extensions/ERC721Enumerable.sol)
pragma solidity ^0.8.20;
import {ERC721} from "../ERC721.sol";
import {IERC721Enumerable} from "./IERC721Enumerable.sol";
import {IERC165} from "../../../utils/introspection/ERC165.sol";
/**
* @dev This implements an optional extension of {ERC721} defined in the ERC that adds enumerability
* of all the token ids in the contract as well as all token ids owned by each account.
*
* CAUTION: {ERC721} extensions that implement custom `balanceOf` logic, such as {ERC721Consecutive},
* interfere with enumerability and should not be used together with {ERC721Enumerable}.
*/
abstract contract ERC721Enumerable is ERC721, IERC721Enumerable {
mapping(address owner => mapping(uint256 index => uint256)) private _ownedTokens;
mapping(uint256 tokenId => uint256) private _ownedTokensIndex;
uint256[] private _allTokens;
mapping(uint256 tokenId => uint256) private _allTokensIndex;
/**
* @dev An `owner`'s token query was out of bounds for `index`.
*
* NOTE: The owner being `address(0)` indicates a global out of bounds index.
*/
error ERC721OutOfBoundsIndex(address owner, uint256 index);
/**
* @dev Batch mint is not allowed.
*/
error ERC721EnumerableForbiddenBatchMint();
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) {
return interfaceId == type(IERC721Enumerable).interfaceId || super.supportsInterface(interfaceId);
}
/**
* @dev See {IERC721Enumerable-tokenOfOwnerByIndex}.
*/
function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual returns (uint256) {
if (index >= balanceOf(owner)) {
revert ERC721OutOfBoundsIndex(owner, index);
}
return _ownedTokens[owner][index];
}
/**
* @dev See {IERC721Enumerable-totalSupply}.
*/
function totalSupply() public view virtual returns (uint256) {
return _allTokens.length;
}
/**
* @dev See {IERC721Enumerable-tokenByIndex}.
*/
function tokenByIndex(uint256 index) public view virtual returns (uint256) {
if (index >= totalSupply()) {
revert ERC721OutOfBoundsIndex(address(0), index);
}
return _allTokens[index];
}
/**
* @dev See {ERC721-_update}.
*/
function _update(address to, uint256 tokenId, address auth) internal virtual override returns (address) {
address previousOwner = super._update(to, tokenId, auth);
if (previousOwner == address(0)) {
_addTokenToAllTokensEnumeration(tokenId);
} else if (previousOwner != to) {
_removeTokenFromOwnerEnumeration(previousOwner, tokenId);
}
if (to == address(0)) {
_removeTokenFromAllTokensEnumeration(tokenId);
} else if (previousOwner != to) {
_addTokenToOwnerEnumeration(to, tokenId);
}
return previousOwner;
}
/**
* @dev Private function to add a token to this extension's ownership-tracking data structures.
* @param to address representing the new owner of the given token ID
* @param tokenId uint256 ID of the token to be added to the tokens list of the given address
*/
function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private {
uint256 length = balanceOf(to) - 1;
_ownedTokens[to][length] = tokenId;
_ownedTokensIndex[tokenId] = length;
}
/**
* @dev Private function to add a token to this extension's token tracking data structures.
* @param tokenId uint256 ID of the token to be added to the tokens list
*/
function _addTokenToAllTokensEnumeration(uint256 tokenId) private {
_allTokensIndex[tokenId] = _allTokens.length;
_allTokens.push(tokenId);
}
/**
* @dev Private function to remove a token from this extension's ownership-tracking data structures. Note that
* while the token is not assigned a new owner, the `_ownedTokensIndex` mapping is _not_ updated: this allows for
* gas optimizations e.g. when performing a transfer operation (avoiding double writes).
* This has O(1) time complexity, but alters the order of the _ownedTokens array.
* @param from address representing the previous owner of the given token ID
* @param tokenId uint256 ID of the token to be removed from the tokens list of the given address
*/
function _removeTokenFromOwnerEnumeration(address from, uint256 tokenId) private {
// To prevent a gap in from's tokens array, we store the last token in the index of the token to delete, and
// then delete the last slot (swap and pop).
uint256 lastTokenIndex = balanceOf(from);
uint256 tokenIndex = _ownedTokensIndex[tokenId];
mapping(uint256 index => uint256) storage _ownedTokensByOwner = _ownedTokens[from];
// When the token to delete is the last token, the swap operation is unnecessary
if (tokenIndex != lastTokenIndex) {
uint256 lastTokenId = _ownedTokensByOwner[lastTokenIndex];
_ownedTokensByOwner[tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token
_ownedTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index
}
// This also deletes the contents at the last position of the array
delete _ownedTokensIndex[tokenId];
delete _ownedTokensByOwner[lastTokenIndex];
}
/**
* @dev Private function to remove a token from this extension's token tracking data structures.
* This has O(1) time complexity, but alters the order of the _allTokens array.
* @param tokenId uint256 ID of the token to be removed from the tokens list
*/
function _removeTokenFromAllTokensEnumeration(uint256 tokenId) private {
// To prevent a gap in the tokens array, we store the last token in the index of the token to delete, and
// then delete the last slot (swap and pop).
uint256 lastTokenIndex = _allTokens.length - 1;
uint256 tokenIndex = _allTokensIndex[tokenId];
// When the token to delete is the last token, the swap operation is unnecessary. However, since this occurs so
// rarely (when the last minted token is burnt) that we still do the swap here to avoid the gas cost of adding
// an 'if' statement (like in _removeTokenFromOwnerEnumeration)
uint256 lastTokenId = _allTokens[lastTokenIndex];
_allTokens[tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token
_allTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index
// This also deletes the contents at the last position of the array
delete _allTokensIndex[tokenId];
_allTokens.pop();
}
/**
* See {ERC721-_increaseBalance}. We need that to account tokens that were minted in batch
*/
function _increaseBalance(address account, uint128 amount) internal virtual override {
if (amount > 0) {
revert ERC721EnumerableForbiddenBatchMint();
}
super._increaseBalance(account, amount);
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (token/ERC721/ERC721.sol)
pragma solidity ^0.8.20;
import {IERC721} from "./IERC721.sol";
import {IERC721Metadata} from "./extensions/IERC721Metadata.sol";
import {ERC721Utils} from "./utils/ERC721Utils.sol";
import {Context} from "../../utils/Context.sol";
import {Strings} from "../../utils/Strings.sol";
import {IERC165, ERC165} from "../../utils/introspection/ERC165.sol";
import {IERC721Errors} from "../../interfaces/draft-IERC6093.sol";
/**
* @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC-721] Non-Fungible Token Standard, including
* the Metadata extension, but not including the Enumerable extension, which is available separately as
* {ERC721Enumerable}.
*/
abstract contract ERC721 is Context, ERC165, IERC721, IERC721Metadata, IERC721Errors {
using Strings for uint256;
// Token name
string private _name;
// Token symbol
string private _symbol;
mapping(uint256 tokenId => address) private _owners;
mapping(address owner => uint256) private _balances;
mapping(uint256 tokenId => address) private _tokenApprovals;
mapping(address owner => mapping(address operator => bool)) private _operatorApprovals;
/**
* @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.
*/
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
return
interfaceId == type(IERC721).interfaceId ||
interfaceId == type(IERC721Metadata).interfaceId ||
super.supportsInterface(interfaceId);
}
/**
* @dev See {IERC721-balanceOf}.
*/
function balanceOf(address owner) public view virtual returns (uint256) {
if (owner == address(0)) {
revert ERC721InvalidOwner(address(0));
}
return _balances[owner];
}
/**
* @dev See {IERC721-ownerOf}.
*/
function ownerOf(uint256 tokenId) public view virtual returns (address) {
return _requireOwned(tokenId);
}
/**
* @dev See {IERC721Metadata-name}.
*/
function name() public view virtual returns (string memory) {
return _name;
}
/**
* @dev See {IERC721Metadata-symbol}.
*/
function symbol() public view virtual returns (string memory) {
return _symbol;
}
/**
* @dev See {IERC721Metadata-tokenURI}.
*/
function tokenURI(uint256 tokenId) public view virtual returns (string memory) {
_requireOwned(tokenId);
string memory baseURI = _baseURI();
return bytes(baseURI).length > 0 ? string.concat(baseURI, tokenId.toString()) : "";
}
/**
* @dev Base URI for computing {tokenURI}. If set, the resulting URI for each
* token will be the concatenation of the `baseURI` and the `tokenId`. Empty
* by default, can be overridden in child contracts.
*/
function _baseURI() internal view virtual returns (string memory) {
return "";
}
/**
* @dev See {IERC721-approve}.
*/
function approve(address to, uint256 tokenId) public virtual {
_approve(to, tokenId, _msgSender());
}
/**
* @dev See {IERC721-getApproved}.
*/
function getApproved(uint256 tokenId) public view virtual returns (address) {
_requireOwned(tokenId);
return _getApproved(tokenId);
}
/**
* @dev See {IERC721-setApprovalForAll}.
*/
function setApprovalForAll(address operator, bool approved) public virtual {
_setApprovalForAll(_msgSender(), operator, approved);
}
/**
* @dev See {IERC721-isApprovedForAll}.
*/
function isApprovedForAll(address owner, address operator) public view virtual returns (bool) {
return _operatorApprovals[owner][operator];
}
/**
* @dev See {IERC721-transferFrom}.
*/
function transferFrom(address from, address to, uint256 tokenId) public virtual {
if (to == address(0)) {
revert ERC721InvalidReceiver(address(0));
}
// Setting an "auth" arguments enables the `_isAuthorized` check which verifies that the token exists
// (from != 0). Therefore, it is not needed to verify that the return value is not 0 here.
address previousOwner = _update(to, tokenId, _msgSender());
if (previousOwner != from) {
revert ERC721IncorrectOwner(from, tokenId, previousOwner);
}
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(address from, address to, uint256 tokenId) public {
safeTransferFrom(from, to, tokenId, "");
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(address from, address to, uint256 tokenId, bytes memory data) public virtual {
transferFrom(from, to, tokenId);
ERC721Utils.checkOnERC721Received(_msgSender(), from, to, tokenId, data);
}
/**
* @dev Returns the owner of the `tokenId`. Does NOT revert if token doesn't exist
*
* IMPORTANT: Any overrides to this function that add ownership of tokens not tracked by the
* core ERC-721 logic MUST be matched with the use of {_increaseBalance} to keep balances
* consistent with ownership. The invariant to preserve is that for any address `a` the value returned by
* `balanceOf(a)` must be equal to the number of tokens such that `_ownerOf(tokenId)` is `a`.
*/
function _ownerOf(uint256 tokenId) internal view virtual returns (address) {
return _owners[tokenId];
}
/**
* @dev Returns the approved address for `tokenId`. Returns 0 if `tokenId` is not minted.
*/
function _getApproved(uint256 tokenId) internal view virtual returns (address) {
return _tokenApprovals[tokenId];
}
/**
* @dev Returns whether `spender` is allowed to manage `owner`'s tokens, or `tokenId` in
* particular (ignoring whether it is owned by `owner`).
*
* WARNING: This function assumes that `owner` is the actual owner of `tokenId` and does not verify this
* assumption.
*/
function _isAuthorized(address owner, address spender, uint256 tokenId) internal view virtual returns (bool) {
return
spender != address(0) &&
(owner == spender || isApprovedForAll(owner, spender) || _getApproved(tokenId) == spender);
}
/**
* @dev Checks if `spender` can operate on `tokenId`, assuming the provided `owner` is the actual owner.
* Reverts if:
* - `spender` does not have approval from `owner` for `tokenId`.
* - `spender` does not have approval to manage all of `owner`'s assets.
*
* WARNING: This function assumes that `owner` is the actual owner of `tokenId` and does not verify this
* assumption.
*/
function _checkAuthorized(address owner, address spender, uint256 tokenId) internal view virtual {
if (!_isAuthorized(owner, spender, tokenId)) {
if (owner == address(0)) {
revert ERC721NonexistentToken(tokenId);
} else {
revert ERC721InsufficientApproval(spender, tokenId);
}
}
}
/**
* @dev Unsafe write access to the balances, used by extensions that "mint" tokens using an {ownerOf} override.
*
* NOTE: the value is limited to type(uint128).max. This protect against _balance overflow. It is unrealistic that
* a uint256 would ever overflow from increments when these increments are bounded to uint128 values.
*
* WARNING: Increasing an account's balance using this function tends to be paired with an override of the
* {_ownerOf} function to resolve the ownership of the corresponding tokens so that balances and ownership
* remain consistent with one another.
*/
function _increaseBalance(address account, uint128 value) internal virtual {
unchecked {
_balances[account] += value;
}
}
/**
* @dev Transfers `tokenId` from its current owner to `to`, or alternatively mints (or burns) if the current owner
* (or `to`) is the zero address. Returns the owner of the `tokenId` before the update.
*
* The `auth` argument is optional. If the value passed is non 0, then this function will check that
* `auth` is either the owner of the token, or approved to operate on the token (by the owner).
*
* Emits a {Transfer} event.
*
* NOTE: If overriding this function in a way that tracks balances, see also {_increaseBalance}.
*/
function _update(address to, uint256 tokenId, address auth) internal virtual returns (address) {
address from = _ownerOf(tokenId);
// Perform (optional) operator check
if (auth != address(0)) {
_checkAuthorized(from, auth, tokenId);
}
// Execute the update
if (from != address(0)) {
// Clear approval. No need to re-authorize or emit the Approval event
_approve(address(0), tokenId, address(0), false);
unchecked {
_balances[from] -= 1;
}
}
if (to != address(0)) {
unchecked {
_balances[to] += 1;
}
}
_owners[tokenId] = to;
emit Transfer(from, to, tokenId);
return from;
}
/**
* @dev Mints `tokenId` and transfers it to `to`.
*
* WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible
*
* Requirements:
*
* - `tokenId` must not exist.
* - `to` cannot be the zero address.
*
* Emits a {Transfer} event.
*/
function _mint(address to, uint256 tokenId) internal {
if (to == address(0)) {
revert ERC721InvalidReceiver(address(0));
}
address previousOwner = _update(to, tokenId, address(0));
if (previousOwner != address(0)) {
revert ERC721InvalidSender(address(0));
}
}
/**
* @dev Mints `tokenId`, transfers it to `to` and checks for `to` acceptance.
*
* Requirements:
*
* - `tokenId` must not exist.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function _safeMint(address to, uint256 tokenId) internal {
_safeMint(to, tokenId, "");
}
/**
* @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is
* forwarded in {IERC721Receiver-onERC721Received} to contract recipients.
*/
function _safeMint(address to, uint256 tokenId, bytes memory data) internal virtual {
_mint(to, tokenId);
ERC721Utils.checkOnERC721Received(_msgSender(), address(0), to, tokenId, data);
}
/**
* @dev Destroys `tokenId`.
* The approval is cleared when the token is burned.
* This is an internal function that does not check if the sender is authorized to operate on the token.
*
* Requirements:
*
* - `tokenId` must exist.
*
* Emits a {Transfer} event.
*/
function _burn(uint256 tokenId) internal {
address previousOwner = _update(address(0), tokenId, address(0));
if (previousOwner == address(0)) {
revert ERC721NonexistentToken(tokenId);
}
}
/**
* @dev Transfers `tokenId` from `from` to `to`.
* As opposed to {transferFrom}, this imposes no restrictions on msg.sender.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
*
* Emits a {Transfer} event.
*/
function _transfer(address from, address to, uint256 tokenId) internal {
if (to == address(0)) {
revert ERC721InvalidReceiver(address(0));
}
address previousOwner = _update(to, tokenId, address(0));
if (previousOwner == address(0)) {
revert ERC721NonexistentToken(tokenId);
} else if (previousOwner != from) {
revert ERC721IncorrectOwner(from, tokenId, previousOwner);
}
}
/**
* @dev Safely transfers `tokenId` token from `from` to `to`, checking that contract recipients
* are aware of the ERC-721 standard to prevent tokens from being forever locked.
*
* `data` is additional data, it has no specified format and it is sent in call to `to`.
*
* This internal function is like {safeTransferFrom} in the sense that it invokes
* {IERC721Receiver-onERC721Received} on the receiver, and can be used to e.g.
* implement alternative mechanisms to perform token transfer, such as signature-based.
*
* Requirements:
*
* - `tokenId` token must exist and be owned by `from`.
* - `to` cannot be the zero address.
* - `from` cannot be the zero address.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function _safeTransfer(address from, address to, uint256 tokenId) internal {
_safeTransfer(from, to, tokenId, "");
}
/**
* @dev Same as {xref-ERC721-_safeTransfer-address-address-uint256-}[`_safeTransfer`], with an additional `data` parameter which is
* forwarded in {IERC721Receiver-onERC721Received} to contract recipients.
*/
function _safeTransfer(address from, address to, uint256 tokenId, bytes memory data) internal virtual {
_transfer(from, to, tokenId);
ERC721Utils.checkOnERC721Received(_msgSender(), from, to, tokenId, data);
}
/**
* @dev Approve `to` to operate on `tokenId`
*
* The `auth` argument is optional. If the value passed is non 0, then this function will check that `auth` is
* either the owner of the token, or approved to operate on all tokens held by this owner.
*
* Emits an {Approval} event.
*
* Overrides to this logic should be done to the variant with an additional `bool emitEvent` argument.
*/
function _approve(address to, uint256 tokenId, address auth) internal {
_approve(to, tokenId, auth, true);
}
/**
* @dev Variant of `_approve` with an optional flag to enable or disable the {Approval} event. The event is not
* emitted in the context of transfers.
*/
function _approve(address to, uint256 tokenId, address auth, bool emitEvent) internal virtual {
// Avoid reading the owner unless necessary
if (emitEvent || auth != address(0)) {
address owner = _requireOwned(tokenId);
// We do not use _isAuthorized because single-token approvals should not be able to call approve
if (auth != address(0) && owner != auth && !isApprovedForAll(owner, auth)) {
revert ERC721InvalidApprover(auth);
}
if (emitEvent) {
emit Approval(owner, to, tokenId);
}
}
_tokenApprovals[tokenId] = to;
}
/**
* @dev Approve `operator` to operate on all of `owner` tokens
*
* Requirements:
* - operator can't be the address zero.
*
* Emits an {ApprovalForAll} event.
*/
function _setApprovalForAll(address owner, address operator, bool approved) internal virtual {
if (operator == address(0)) {
revert ERC721InvalidOperator(operator);
}
_operatorApprovals[owner][operator] = approved;
emit ApprovalForAll(owner, operator, approved);
}
/**
* @dev Reverts if the `tokenId` doesn't have a current owner (it hasn't been minted, or it has been burned).
* Returns the owner.
*
* Overrides to ownership logic should be done to {_ownerOf}.
*/
function _requireOwned(uint256 tokenId) internal view returns (address) {
address owner = _ownerOf(tokenId);
if (owner == address(0)) {
revert ERC721NonexistentToken(tokenId);
}
return owner;
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (token/common/ERC2981.sol)
pragma solidity ^0.8.20;
import {IERC2981} from "../../interfaces/IERC2981.sol";
import {IERC165, ERC165} from "../../utils/introspection/ERC165.sol";
/**
* @dev Implementation of the NFT Royalty Standard, a standardized way to retrieve royalty payment information.
*
* Royalty information can be specified globally for all token ids via {_setDefaultRoyalty}, and/or individually for
* specific token ids via {_setTokenRoyalty}. The latter takes precedence over the first.
*
* Royalty is specified as a fraction of sale price. {_feeDenominator} is overridable but defaults to 10000, meaning the
* fee is specified in basis points by default.
*
* IMPORTANT: ERC-2981 only specifies a way to signal royalty information and does not enforce its payment. See
* https://eips.ethereum.org/EIPS/eip-2981#optional-royalty-payments[Rationale] in the ERC. Marketplaces are expected to
* voluntarily pay royalties together with sales, but note that this standard is not yet widely supported.
*/
abstract contract ERC2981 is IERC2981, ERC165 {
struct RoyaltyInfo {
address receiver;
uint96 royaltyFraction;
}
RoyaltyInfo private _defaultRoyaltyInfo;
mapping(uint256 tokenId => RoyaltyInfo) private _tokenRoyaltyInfo;
/**
* @dev The default royalty set is invalid (eg. (numerator / denominator) >= 1).
*/
error ERC2981InvalidDefaultRoyalty(uint256 numerator, uint256 denominator);
/**
* @dev The default royalty receiver is invalid.
*/
error ERC2981InvalidDefaultRoyaltyReceiver(address receiver);
/**
* @dev The royalty set for a specific `tokenId` is invalid (eg. (numerator / denominator) >= 1).
*/
error ERC2981InvalidTokenRoyalty(uint256 tokenId, uint256 numerator, uint256 denominator);
/**
* @dev The royalty receiver for `tokenId` is invalid.
*/
error ERC2981InvalidTokenRoyaltyReceiver(uint256 tokenId, address receiver);
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC165) returns (bool) {
return interfaceId == type(IERC2981).interfaceId || super.supportsInterface(interfaceId);
}
/**
* @inheritdoc IERC2981
*/
function royaltyInfo(
uint256 tokenId,
uint256 salePrice
) public view virtual returns (address receiver, uint256 amount) {
RoyaltyInfo storage _royaltyInfo = _tokenRoyaltyInfo[tokenId];
address royaltyReceiver = _royaltyInfo.receiver;
uint96 royaltyFraction = _royaltyInfo.royaltyFraction;
if (royaltyReceiver == address(0)) {
royaltyReceiver = _defaultRoyaltyInfo.receiver;
royaltyFraction = _defaultRoyaltyInfo.royaltyFraction;
}
uint256 royaltyAmount = (salePrice * royaltyFraction) / _feeDenominator();
return (royaltyReceiver, royaltyAmount);
}
/**
* @dev The denominator with which to interpret the fee set in {_setTokenRoyalty} and {_setDefaultRoyalty} as a
* fraction of the sale price. Defaults to 10000 so fees are expressed in basis points, but may be customized by an
* override.
*/
function _feeDenominator() internal pure virtual returns (uint96) {
return 10000;
}
/**
* @dev Sets the royalty information that all ids in this contract will default to.
*
* Requirements:
*
* - `receiver` cannot be the zero address.
* - `feeNumerator` cannot be greater than the fee denominator.
*/
function _setDefaultRoyalty(address receiver, uint96 feeNumerator) internal virtual {
uint256 denominator = _feeDenominator();
if (feeNumerator > denominator) {
// Royalty fee will exceed the sale price
revert ERC2981InvalidDefaultRoyalty(feeNumerator, denominator);
}
if (receiver == address(0)) {
revert ERC2981InvalidDefaultRoyaltyReceiver(address(0));
}
_defaultRoyaltyInfo = RoyaltyInfo(receiver, feeNumerator);
}
/**
* @dev Removes default royalty information.
*/
function _deleteDefaultRoyalty() internal virtual {
delete _defaultRoyaltyInfo;
}
/**
* @dev Sets the royalty information for a specific token id, overriding the global default.
*
* Requirements:
*
* - `receiver` cannot be the zero address.
* - `feeNumerator` cannot be greater than the fee denominator.
*/
function _setTokenRoyalty(uint256 tokenId, address receiver, uint96 feeNumerator) internal virtual {
uint256 denominator = _feeDenominator();
if (feeNumerator > denominator) {
// Royalty fee will exceed the sale price
revert ERC2981InvalidTokenRoyalty(tokenId, feeNumerator, denominator);
}
if (receiver == address(0)) {
revert ERC2981InvalidTokenRoyaltyReceiver(tokenId, address(0));
}
_tokenRoyaltyInfo[tokenId] = RoyaltyInfo(receiver, feeNumerator);
}
/**
* @dev Resets royalty information for the token id back to the global default.
*/
function _resetTokenRoyalty(uint256 tokenId) internal virtual {
delete _tokenRoyaltyInfo[tokenId];
}
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.26;
/// @title IERC721Reclaimable: NFT interface with title ownership and reclaim rights
/// @notice This interface extends the concept of NFT ownership to include both asset ownership
/// and title ownership, allowing for a reclaim mechanism and fixed transfer fees. Inspired by
/// the a16zcrypto article https://a16zcrypto.com/posts/article/how-nft-royalties-work/
/// @author Dalton G. Sweeney
/// @dev The ownership model can be visualized as follows:
///
/// +----------------+ +----------------+
/// | Asset Owner | | Title Owner |
/// | (0xabc...) | | (0x123...) |
/// +----------------+ +----------------+
/// ^ ^
/// | |
/// | +--------+ |
/// +--------| NFT |-------+
/// +--------+
///
/// Asset ownership = Standard ERC721 ownership
/// Title ownership = Additional layer of ownership with reclaim rights
/// Transferring title requires paying a fixed fee
///
/// Key operations:
///
/// 1. Transfer title (does NOT transfer asset):
/// +----------------+ +----------------+ +----------------+
/// | Asset Owner | | Title Owner | | Fee Recipient |
/// | (0xabc...) | | (0x123...) | | (0xfee...) |
/// +----------------+ +----------------+ +----------------+
/// | | |
/// | | Fixed Fee |
/// | | +--------------------> |
/// | | |
/// | | |
/// | v |
/// | +----------------+ |
/// | | New Title Owner| |
/// | | (0x789...) | |
/// +----------------+
///
/// 2. Transfer asset (does NOT transfer title):
/// +----------------+ +----------------+
/// | Asset Owner | | Title Owner |
/// | (0xabc...) | | (0x123...) |
/// +----------------+ +----------------+
/// | |
/// v |
/// +----------------+ |
/// | New Asset Owner| |
/// | (0xdef...) | |
/// +----------------+ |
///
/// 3. Title owner reclaims asset:
/// +----------------+ +----------------+
/// | Asset Owner | | Title Owner |
/// | (0xdef...) | | (0x123...) |
/// +----------------+ +----------------+
/// | |
/// | |
/// | reclaim |
/// <--------------------------+
/// | |
/// v v
/// +----------------+ +----------------+
/// | Asset & Title | | Title Owner |
/// | (0x123...) | | (0x123...) |
/// +----------------+ +----------------+
///
/// The title owner can reclaim the NFT at any time if the asset owner differs.
/// This mechanism incentivizes paying the transfer fee (royalty) when transferring ownership,
/// while allowing free transfers between personal wallets.
interface IERC721Reclaimable {
/// @dev This emits when title of an NFT changes by any mechanism. This event emits when NFTs are
/// created (`from` == 0) and destroyed (`to` == 0). At the time of any title transfer, the title
/// approved address for that NFT (if any) is reset to none.
event TitleTransfer(address indexed _from, address indexed _to, uint256 indexed _tokenId);
/// @dev This emits when the title approved address for an NFT is changed or reaffirmed. The zero
/// address indicates there is no approved address. When a TitleTransfer event emits, this also
/// indicates that the title approved address for that NFT (if any) is reset to none.
event TitleApproval(address indexed _titleOwner, address indexed _approved, uint256 indexed _tokenId);
/// @dev This emits when an title operator is enabled or disabled for a title owner.
/// The title operator can manage the titles for all NFTs of the title owner
event TitleApprovalForAll(address indexed _titleOwner, address indexed _titleOperator, bool _approved);
/// @dev This emits when ownership of an NFT is claimed by a title owner or title operator
event OwnershipClaim(address indexed _titleOwner, address indexed _assetOwner, uint256 indexed _tokenId);
/// @notice The fixed fee required for transferring an NFT's title
function titleTransferFee() external view returns (uint256);
/// @notice The recipient of the title transfer fee when a transfer is executed
function titleTransferFeeRecipient() external view returns (address);
/// @notice Count all NFT titles assigned to an owner
/// @dev NFTs assigned to the zero address are considered invalid, and this
/// function throws for queries about the zero address.
/// @param _titleOwner An address for whom to query the balance
/// @return The number of NFT titles owned by `_titleOwner`, possibly zero
function titleBalanceOf(address _titleOwner) external view returns (uint256);
/// @notice Find the title owner of an NFT
/// @param _tokenId The identifier for an NFT
/// @return The address of the title owner of the NFT
function titleOwnerOf(uint256 _tokenId) external view returns (address);
/// @notice Claim ownership of an NFT
/// @dev Throws unless `msg.sender` is the title owner
/// @dev Emits a ERC721.Transfer event
/// @param _tokenId The NFT to claim ownership for
function claimOwnership(uint256 _tokenId) external payable;
/// @notice Transfer the NFT's title -- THE CALLER IS RESPONSIBLE TO CONFIRM THAT `to` IS
/// CAPABLE OF RECEIVING NFTS OR ELSE THEY MAY BE PERMANENTLY LOST
/// @dev Throws unless `msg.sender` is the title owner, an authorized title operator, or the
/// title-approved address for this NFT.
/// @dev Throws unless `msg.value` is at least the titleTransferFee
/// @param _from The current title owner of an NFT
/// @param _to The new title owner
/// @param _tokenId The NFT whose title to transfer
function titleTransferFrom(address _from, address _to, uint256 _tokenId) external payable;
/// @notice Set or reaffirm the approved address for an NFT's title.
/// @dev Throws unless `msg.sender` is the current NFT title owner, or an authorized title
/// operator of the current owner
/// @param _approved The new approved NFT title controller
/// @param _tokenId The NFT to approve
function titleApprove(address _approved, uint256 _tokenId) external payable;
/// @notice Enable or disable title approval for a third party ("titleOperator") to manage
/// titles for all of `msg.sender`'s assets
/// @param _titleOperator Address to add to the set of authorized title operators
/// @param _approved True if the title operator is approved, false to revoke approval
function setTitleApprovalForAll(address _titleOperator, bool _approved) external;
/// @notice Get the approved title address for a single NFT
/// @param _tokenId The NFT to find the approved title address for
/// @return The approved address for this NFT, or the zero address if there is none
function getTitleApproved(uint256 _tokenId) external view returns (address);
/// @notice Query if an address is an authorized titleOperator for another address
/// @param _titleOwner The address that owns the NFT's title
/// @param _titleOperator The address that acts on behalf of the title owner
/// @return True if `titleOperator` is an approved operator for `titleOwner`, false otherwise
function isTitleApprovedForAll(address _titleOwner, address _titleOperator) external view returns (bool);
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.2.0) (utils/Strings.sol)
pragma solidity ^0.8.20;
import {Math} from "./math/Math.sol";
import {SafeCast} from "./math/SafeCast.sol";
import {SignedMath} from "./math/SignedMath.sol";
/**
* @dev String operations.
*/
library Strings {
using SafeCast for *;
bytes16 private constant HEX_DIGITS = "0123456789abcdef";
uint8 private constant ADDRESS_LENGTH = 20;
/**
* @dev The `value` string doesn't fit in the specified `length`.
*/
error StringsInsufficientHexLength(uint256 value, uint256 length);
/**
* @dev The string being parsed contains characters that are not in scope of the given base.
*/
error StringsInvalidChar();
/**
* @dev The string being parsed is not a properly formatted address.
*/
error StringsInvalidAddressFormat();
/**
* @dev Converts a `uint256` to its ASCII `string` decimal representation.
*/
function toString(uint256 value) internal pure returns (string memory) {
unchecked {
uint256 length = Math.log10(value) + 1;
string memory buffer = new string(length);
uint256 ptr;
assembly ("memory-safe") {
ptr := add(buffer, add(32, length))
}
while (true) {
ptr--;
assembly ("memory-safe") {
mstore8(ptr, byte(mod(value, 10), HEX_DIGITS))
}
value /= 10;
if (value == 0) break;
}
return buffer;
}
}
/**
* @dev Converts a `int256` to its ASCII `string` decimal representation.
*/
function toStringSigned(int256 value) internal pure returns (string memory) {
return string.concat(value < 0 ? "-" : "", toString(SignedMath.abs(value)));
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
*/
function toHexString(uint256 value) internal pure returns (string memory) {
unchecked {
return toHexString(value, Math.log256(value) + 1);
}
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
*/
function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
uint256 localValue = value;
bytes memory buffer = new bytes(2 * length + 2);
buffer[0] = "0";
buffer[1] = "x";
for (uint256 i = 2 * length + 1; i > 1; --i) {
buffer[i] = HEX_DIGITS[localValue & 0xf];
localValue >>= 4;
}
if (localValue != 0) {
revert StringsInsufficientHexLength(value, length);
}
return string(buffer);
}
/**
* @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal
* representation.
*/
function toHexString(address addr) internal pure returns (string memory) {
return toHexString(uint256(uint160(addr)), ADDRESS_LENGTH);
}
/**
* @dev Converts an `address` with fixed length of 20 bytes to its checksummed ASCII `string` hexadecimal
* representation, according to EIP-55.
*/
function toChecksumHexString(address addr) internal pure returns (string memory) {
bytes memory buffer = bytes(toHexString(addr));
// hash the hex part of buffer (skip length + 2 bytes, length 40)
uint256 hashValue;
assembly ("memory-safe") {
hashValue := shr(96, keccak256(add(buffer, 0x22), 40))
}
for (uint256 i = 41; i > 1; --i) {
// possible values for buffer[i] are 48 (0) to 57 (9) and 97 (a) to 102 (f)
if (hashValue & 0xf > 7 && uint8(buffer[i]) > 96) {
// case shift by xoring with 0x20
buffer[i] ^= 0x20;
}
hashValue >>= 4;
}
return string(buffer);
}
/**
* @dev Returns true if the two strings are equal.
*/
function equal(string memory a, string memory b) internal pure returns (bool) {
return bytes(a).length == bytes(b).length && keccak256(bytes(a)) == keccak256(bytes(b));
}
/**
* @dev Parse a decimal string and returns the value as a `uint256`.
*
* Requirements:
* - The string must be formatted as `[0-9]*`
* - The result must fit into an `uint256` type
*/
function parseUint(string memory input) internal pure returns (uint256) {
return parseUint(input, 0, bytes(input).length);
}
/**
* @dev Variant of {parseUint-string} that parses a substring of `input` located between position `begin` (included) and
* `end` (excluded).
*
* Requirements:
* - The substring must be formatted as `[0-9]*`
* - The result must fit into an `uint256` type
*/
function parseUint(string memory input, uint256 begin, uint256 end) internal pure returns (uint256) {
(bool success, uint256 value) = tryParseUint(input, begin, end);
if (!success) revert StringsInvalidChar();
return value;
}
/**
* @dev Variant of {parseUint-string} that returns false if the parsing fails because of an invalid character.
*
* NOTE: This function will revert if the result does not fit in a `uint256`.
*/
function tryParseUint(string memory input) internal pure returns (bool success, uint256 value) {
return _tryParseUintUncheckedBounds(input, 0, bytes(input).length);
}
/**
* @dev Variant of {parseUint-string-uint256-uint256} that returns false if the parsing fails because of an invalid
* character.
*
* NOTE: This function will revert if the result does not fit in a `uint256`.
*/
function tryParseUint(
string memory input,
uint256 begin,
uint256 end
) internal pure returns (bool success, uint256 value) {
if (end > bytes(input).length || begin > end) return (false, 0);
return _tryParseUintUncheckedBounds(input, begin, end);
}
/**
* @dev Implementation of {tryParseUint-string-uint256-uint256} that does not check bounds. Caller should make sure that
* `begin <= end <= input.length`. Other inputs would result in undefined behavior.
*/
function _tryParseUintUncheckedBounds(
string memory input,
uint256 begin,
uint256 end
) private pure returns (bool success, uint256 value) {
bytes memory buffer = bytes(input);
uint256 result = 0;
for (uint256 i = begin; i < end; ++i) {
uint8 chr = _tryParseChr(bytes1(_unsafeReadBytesOffset(buffer, i)));
if (chr > 9) return (false, 0);
result *= 10;
result += chr;
}
return (true, result);
}
/**
* @dev Parse a decimal string and returns the value as a `int256`.
*
* Requirements:
* - The string must be formatted as `[-+]?[0-9]*`
* - The result must fit in an `int256` type.
*/
function parseInt(string memory input) internal pure returns (int256) {
return parseInt(input, 0, bytes(input).length);
}
/**
* @dev Variant of {parseInt-string} that parses a substring of `input` located between position `begin` (included) and
* `end` (excluded).
*
* Requirements:
* - The substring must be formatted as `[-+]?[0-9]*`
* - The result must fit in an `int256` type.
*/
function parseInt(string memory input, uint256 begin, uint256 end) internal pure returns (int256) {
(bool success, int256 value) = tryParseInt(input, begin, end);
if (!success) revert StringsInvalidChar();
return value;
}
/**
* @dev Variant of {parseInt-string} that returns false if the parsing fails because of an invalid character or if
* the result does not fit in a `int256`.
*
* NOTE: This function will revert if the absolute value of the result does not fit in a `uint256`.
*/
function tryParseInt(string memory input) internal pure returns (bool success, int256 value) {
return _tryParseIntUncheckedBounds(input, 0, bytes(input).length);
}
uint256 private constant ABS_MIN_INT256 = 2 ** 255;
/**
* @dev Variant of {parseInt-string-uint256-uint256} that returns false if the parsing fails because of an invalid
* character or if the result does not fit in a `int256`.
*
* NOTE: This function will revert if the absolute value of the result does not fit in a `uint256`.
*/
function tryParseInt(
string memory input,
uint256 begin,
uint256 end
) internal pure returns (bool success, int256 value) {
if (end > bytes(input).length || begin > end) return (false, 0);
return _tryParseIntUncheckedBounds(input, begin, end);
}
/**
* @dev Implementation of {tryParseInt-string-uint256-uint256} that does not check bounds. Caller should make sure that
* `begin <= end <= input.length`. Other inputs would result in undefined behavior.
*/
function _tryParseIntUncheckedBounds(
string memory input,
uint256 begin,
uint256 end
) private pure returns (bool success, int256 value) {
bytes memory buffer = bytes(input);
// Check presence of a negative sign.
bytes1 sign = begin == end ? bytes1(0) : bytes1(_unsafeReadBytesOffset(buffer, begin)); // don't do out-of-bound (possibly unsafe) read if sub-string is empty
bool positiveSign = sign == bytes1("+");
bool negativeSign = sign == bytes1("-");
uint256 offset = (positiveSign || negativeSign).toUint();
(bool absSuccess, uint256 absValue) = tryParseUint(input, begin + offset, end);
if (absSuccess && absValue < ABS_MIN_INT256) {
return (true, negativeSign ? -int256(absValue) : int256(absValue));
} else if (absSuccess && negativeSign && absValue == ABS_MIN_INT256) {
return (true, type(int256).min);
} else return (false, 0);
}
/**
* @dev Parse a hexadecimal string (with or without "0x" prefix), and returns the value as a `uint256`.
*
* Requirements:
* - The string must be formatted as `(0x)?[0-9a-fA-F]*`
* - The result must fit in an `uint256` type.
*/
function parseHexUint(string memory input) internal pure returns (uint256) {
return parseHexUint(input, 0, bytes(input).length);
}
/**
* @dev Variant of {parseHexUint-string} that parses a substring of `input` located between position `begin` (included) and
* `end` (excluded).
*
* Requirements:
* - The substring must be formatted as `(0x)?[0-9a-fA-F]*`
* - The result must fit in an `uint256` type.
*/
function parseHexUint(string memory input, uint256 begin, uint256 end) internal pure returns (uint256) {
(bool success, uint256 value) = tryParseHexUint(input, begin, end);
if (!success) revert StringsInvalidChar();
return value;
}
/**
* @dev Variant of {parseHexUint-string} that returns false if the parsing fails because of an invalid character.
*
* NOTE: This function will revert if the result does not fit in a `uint256`.
*/
function tryParseHexUint(string memory input) internal pure returns (bool success, uint256 value) {
return _tryParseHexUintUncheckedBounds(input, 0, bytes(input).length);
}
/**
* @dev Variant of {parseHexUint-string-uint256-uint256} that returns false if the parsing fails because of an
* invalid character.
*
* NOTE: This function will revert if the result does not fit in a `uint256`.
*/
function tryParseHexUint(
string memory input,
uint256 begin,
uint256 end
) internal pure returns (bool success, uint256 value) {
if (end > bytes(input).length || begin > end) return (false, 0);
return _tryParseHexUintUncheckedBounds(input, begin, end);
}
/**
* @dev Implementation of {tryParseHexUint-string-uint256-uint256} that does not check bounds. Caller should make sure that
* `begin <= end <= input.length`. Other inputs would result in undefined behavior.
*/
function _tryParseHexUintUncheckedBounds(
string memory input,
uint256 begin,
uint256 end
) private pure returns (bool success, uint256 value) {
bytes memory buffer = bytes(input);
// skip 0x prefix if present
bool hasPrefix = (end > begin + 1) && bytes2(_unsafeReadBytesOffset(buffer, begin)) == bytes2("0x"); // don't do out-of-bound (possibly unsafe) read if sub-string is empty
uint256 offset = hasPrefix.toUint() * 2;
uint256 result = 0;
for (uint256 i = begin + offset; i < end; ++i) {
uint8 chr = _tryParseChr(bytes1(_unsafeReadBytesOffset(buffer, i)));
if (chr > 15) return (false, 0);
result *= 16;
unchecked {
// Multiplying by 16 is equivalent to a shift of 4 bits (with additional overflow check).
// This guarantees that adding a value < 16 will not cause an overflow, hence the unchecked.
result += chr;
}
}
return (true, result);
}
/**
* @dev Parse a hexadecimal string (with or without "0x" prefix), and returns the value as an `address`.
*
* Requirements:
* - The string must be formatted as `(0x)?[0-9a-fA-F]{40}`
*/
function parseAddress(string memory input) internal pure returns (address) {
return parseAddress(input, 0, bytes(input).length);
}
/**
* @dev Variant of {parseAddress-string} that parses a substring of `input` located between position `begin` (included) and
* `end` (excluded).
*
* Requirements:
* - The substring must be formatted as `(0x)?[0-9a-fA-F]{40}`
*/
function parseAddress(string memory input, uint256 begin, uint256 end) internal pure returns (address) {
(bool success, address value) = tryParseAddress(input, begin, end);
if (!success) revert StringsInvalidAddressFormat();
return value;
}
/**
* @dev Variant of {parseAddress-string} that returns false if the parsing fails because the input is not a properly
* formatted address. See {parseAddress-string} requirements.
*/
function tryParseAddress(string memory input) internal pure returns (bool success, address value) {
return tryParseAddress(input, 0, bytes(input).length);
}
/**
* @dev Variant of {parseAddress-string-uint256-uint256} that returns false if the parsing fails because input is not a properly
* formatted address. See {parseAddress-string-uint256-uint256} requirements.
*/
function tryParseAddress(
string memory input,
uint256 begin,
uint256 end
) internal pure returns (bool success, address value) {
if (end > bytes(input).length || begin > end) return (false, address(0));
bool hasPrefix = (end > begin + 1) && bytes2(_unsafeReadBytesOffset(bytes(input), begin)) == bytes2("0x"); // don't do out-of-bound (possibly unsafe) read if sub-string is empty
uint256 expectedLength = 40 + hasPrefix.toUint() * 2;
// check that input is the correct length
if (end - begin == expectedLength) {
// length guarantees that this does not overflow, and value is at most type(uint160).max
(bool s, uint256 v) = _tryParseHexUintUncheckedBounds(input, begin, end);
return (s, address(uint160(v)));
} else {
return (false, address(0));
}
}
function _tryParseChr(bytes1 chr) private pure returns (uint8) {
uint8 value = uint8(chr);
// Try to parse `chr`:
// - Case 1: [0-9]
// - Case 2: [a-f]
// - Case 3: [A-F]
// - otherwise not supported
unchecked {
if (value > 47 && value < 58) value -= 48;
else if (value > 96 && value < 103) value -= 87;
else if (value > 64 && value < 71) value -= 55;
else return type(uint8).max;
}
return value;
}
/**
* @dev Reads a bytes32 from a bytes array without bounds checking.
*
* NOTE: making this function internal would mean it could be used with memory unsafe offset, and marking the
* assembly block as such would prevent some optimizations.
*/
function _unsafeReadBytesOffset(bytes memory buffer, uint256 offset) private pure returns (bytes32 value) {
// This is not memory safe in the general case, but all calls to this private function are within bounds.
assembly ("memory-safe") {
value := mload(add(buffer, add(0x20, offset)))
}
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC721/extensions/IERC721Enumerable.sol)
pragma solidity ^0.8.20;
import {IERC721} from "../IERC721.sol";
/**
* @title ERC-721 Non-Fungible Token Standard, optional enumeration extension
* @dev See https://eips.ethereum.org/EIPS/eip-721
*/
interface IERC721Enumerable is IERC721 {
/**
* @dev Returns the total amount of tokens stored by the contract.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns a token ID owned by `owner` at a given `index` of its token list.
* Use along with {balanceOf} to enumerate all of ``owner``'s tokens.
*/
function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256);
/**
* @dev Returns a token ID at a given `index` of all the tokens stored by the contract.
* Use along with {totalSupply} to enumerate all tokens.
*/
function tokenByIndex(uint256 index) external view returns (uint256);
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (utils/introspection/ERC165.sol)
pragma solidity ^0.8.20;
import {IERC165} from "./IERC165.sol";
/**
* @dev Implementation of the {IERC165} interface.
*
* Contracts that want to implement ERC-165 should inherit from this contract and override {supportsInterface} to check
* for the additional interface id that will be supported. For example:
*
* ```solidity
* function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
* return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
* }
* ```
*/
abstract contract ERC165 is IERC165 {
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual returns (bool) {
return interfaceId == type(IERC165).interfaceId;
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (token/ERC721/IERC721.sol)
pragma solidity ^0.8.20;
import {IERC165} from "../../utils/introspection/IERC165.sol";
/**
* @dev Required interface of an ERC-721 compliant contract.
*/
interface IERC721 is IERC165 {
/**
* @dev Emitted when `tokenId` token is transferred from `from` to `to`.
*/
event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
*/
event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
*/
event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
/**
* @dev Returns the number of tokens in ``owner``'s account.
*/
function balanceOf(address owner) external view returns (uint256 balance);
/**
* @dev Returns the owner of the `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function ownerOf(uint256 tokenId) external view returns (address owner);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon
* a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(address from, address to, uint256 tokenId, bytes calldata data) external;
/**
* @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
* are aware of the ERC-721 protocol to prevent tokens from being forever locked.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must have been allowed to move this token by either {approve} or
* {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon
* a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(address from, address to, uint256 tokenId) external;
/**
* @dev Transfers `tokenId` token from `from` to `to`.
*
* WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC-721
* or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must
* understand this adds an external call which potentially creates a reentrancy vulnerability.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
*
* Emits a {Transfer} event.
*/
function transferFrom(address from, address to, uint256 tokenId) external;
/**
* @dev Gives permission to `to` to transfer `tokenId` token to another account.
* The approval is cleared when the token is transferred.
*
* Only a single account can be approved at a time, so approving the zero address clears previous approvals.
*
* Requirements:
*
* - The caller must own the token or be an approved operator.
* - `tokenId` must exist.
*
* Emits an {Approval} event.
*/
function approve(address to, uint256 tokenId) external;
/**
* @dev Approve or remove `operator` as an operator for the caller.
* Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
*
* Requirements:
*
* - The `operator` cannot be the address zero.
*
* Emits an {ApprovalForAll} event.
*/
function setApprovalForAll(address operator, bool approved) external;
/**
* @dev Returns the account approved for `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function getApproved(uint256 tokenId) external view returns (address operator);
/**
* @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
*
* See {setApprovalForAll}
*/
function isApprovedForAll(address owner, address operator) external view returns (bool);
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC721/extensions/IERC721Metadata.sol)
pragma solidity ^0.8.20;
import {IERC721} from "../IERC721.sol";
/**
* @title ERC-721 Non-Fungible Token Standard, optional metadata extension
* @dev See https://eips.ethereum.org/EIPS/eip-721
*/
interface IERC721Metadata is IERC721 {
/**
* @dev Returns the token collection name.
*/
function name() external view returns (string memory);
/**
* @dev Returns the token collection symbol.
*/
function symbol() external view returns (string memory);
/**
* @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.
*/
function tokenURI(uint256 tokenId) external view returns (string memory);
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (token/ERC721/utils/ERC721Utils.sol)
pragma solidity ^0.8.20;
import {IERC721Receiver} from "../IERC721Receiver.sol";
import {IERC721Errors} from "../../../interfaces/draft-IERC6093.sol";
/**
* @dev Library that provide common ERC-721 utility functions.
*
* See https://eips.ethereum.org/EIPS/eip-721[ERC-721].
*
* _Available since v5.1._
*/
library ERC721Utils {
/**
* @dev Performs an acceptance check for the provided `operator` by calling {IERC721Receiver-onERC721Received}
* on the `to` address. The `operator` is generally the address that initiated the token transfer (i.e. `msg.sender`).
*
* The acceptance call is not executed and treated as a no-op if the target address doesn't contain code (i.e. an EOA).
* Otherwise, the recipient must implement {IERC721Receiver-onERC721Received} and return the acceptance magic value to accept
* the transfer.
*/
function checkOnERC721Received(
address operator,
address from,
address to,
uint256 tokenId,
bytes memory data
) internal {
if (to.code.length > 0) {
try IERC721Receiver(to).onERC721Received(operator, from, tokenId, data) returns (bytes4 retval) {
if (retval != IERC721Receiver.onERC721Received.selector) {
// Token rejected
revert IERC721Errors.ERC721InvalidReceiver(to);
}
} catch (bytes memory reason) {
if (reason.length == 0) {
// non-IERC721Receiver implementer
revert IERC721Errors.ERC721InvalidReceiver(to);
} else {
assembly ("memory-safe") {
revert(add(32, reason), mload(reason))
}
}
}
}
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.1) (utils/Context.sol)
pragma solidity ^0.8.20;
/**
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
function _contextSuffixLength() internal view virtual returns (uint256) {
return 0;
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (interfaces/draft-IERC6093.sol)
pragma solidity ^0.8.20;
/**
* @dev Standard ERC-20 Errors
* Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC-20 tokens.
*/
interface IERC20Errors {
/**
* @dev Indicates an error related to the current `balance` of a `sender`. Used in transfers.
* @param sender Address whose tokens are being transferred.
* @param balance Current balance for the interacting account.
* @param needed Minimum amount required to perform a transfer.
*/
error ERC20InsufficientBalance(address sender, uint256 balance, uint256 needed);
/**
* @dev Indicates a failure with the token `sender`. Used in transfers.
* @param sender Address whose tokens are being transferred.
*/
error ERC20InvalidSender(address sender);
/**
* @dev Indicates a failure with the token `receiver`. Used in transfers.
* @param receiver Address to which tokens are being transferred.
*/
error ERC20InvalidReceiver(address receiver);
/**
* @dev Indicates a failure with the `spender`’s `allowance`. Used in transfers.
* @param spender Address that may be allowed to operate on tokens without being their owner.
* @param allowance Amount of tokens a `spender` is allowed to operate with.
* @param needed Minimum amount required to perform a transfer.
*/
error ERC20InsufficientAllowance(address spender, uint256 allowance, uint256 needed);
/**
* @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.
* @param approver Address initiating an approval operation.
*/
error ERC20InvalidApprover(address approver);
/**
* @dev Indicates a failure with the `spender` to be approved. Used in approvals.
* @param spender Address that may be allowed to operate on tokens without being their owner.
*/
error ERC20InvalidSpender(address spender);
}
/**
* @dev Standard ERC-721 Errors
* Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC-721 tokens.
*/
interface IERC721Errors {
/**
* @dev Indicates that an address can't be an owner. For example, `address(0)` is a forbidden owner in ERC-20.
* Used in balance queries.
* @param owner Address of the current owner of a token.
*/
error ERC721InvalidOwner(address owner);
/**
* @dev Indicates a `tokenId` whose `owner` is the zero address.
* @param tokenId Identifier number of a token.
*/
error ERC721NonexistentToken(uint256 tokenId);
/**
* @dev Indicates an error related to the ownership over a particular token. Used in transfers.
* @param sender Address whose tokens are being transferred.
* @param tokenId Identifier number of a token.
* @param owner Address of the current owner of a token.
*/
error ERC721IncorrectOwner(address sender, uint256 tokenId, address owner);
/**
* @dev Indicates a failure with the token `sender`. Used in transfers.
* @param sender Address whose tokens are being transferred.
*/
error ERC721InvalidSender(address sender);
/**
* @dev Indicates a failure with the token `receiver`. Used in transfers.
* @param receiver Address to which tokens are being transferred.
*/
error ERC721InvalidReceiver(address receiver);
/**
* @dev Indicates a failure with the `operator`’s approval. Used in transfers.
* @param operator Address that may be allowed to operate on tokens without being their owner.
* @param tokenId Identifier number of a token.
*/
error ERC721InsufficientApproval(address operator, uint256 tokenId);
/**
* @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.
* @param approver Address initiating an approval operation.
*/
error ERC721InvalidApprover(address approver);
/**
* @dev Indicates a failure with the `operator` to be approved. Used in approvals.
* @param operator Address that may be allowed to operate on tokens without being their owner.
*/
error ERC721InvalidOperator(address operator);
}
/**
* @dev Standard ERC-1155 Errors
* Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC-1155 tokens.
*/
interface IERC1155Errors {
/**
* @dev Indicates an error related to the current `balance` of a `sender`. Used in transfers.
* @param sender Address whose tokens are being transferred.
* @param balance Current balance for the interacting account.
* @param needed Minimum amount required to perform a transfer.
* @param tokenId Identifier number of a token.
*/
error ERC1155InsufficientBalance(address sender, uint256 balance, uint256 needed, uint256 tokenId);
/**
* @dev Indicates a failure with the token `sender`. Used in transfers.
* @param sender Address whose tokens are being transferred.
*/
error ERC1155InvalidSender(address sender);
/**
* @dev Indicates a failure with the token `receiver`. Used in transfers.
* @param receiver Address to which tokens are being transferred.
*/
error ERC1155InvalidReceiver(address receiver);
/**
* @dev Indicates a failure with the `operator`’s approval. Used in transfers.
* @param operator Address that may be allowed to operate on tokens without being their owner.
* @param owner Address of the current owner of a token.
*/
error ERC1155MissingApprovalForAll(address operator, address owner);
/**
* @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.
* @param approver Address initiating an approval operation.
*/
error ERC1155InvalidApprover(address approver);
/**
* @dev Indicates a failure with the `operator` to be approved. Used in approvals.
* @param operator Address that may be allowed to operate on tokens without being their owner.
*/
error ERC1155InvalidOperator(address operator);
/**
* @dev Indicates an array length mismatch between ids and values in a safeBatchTransferFrom operation.
* Used in batch transfers.
* @param idsLength Length of the array of token identifiers
* @param valuesLength Length of the array of token amounts
*/
error ERC1155InvalidArrayLength(uint256 idsLength, uint256 valuesLength);
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (interfaces/IERC2981.sol)
pragma solidity ^0.8.20;
import {IERC165} from "../utils/introspection/IERC165.sol";
/**
* @dev Interface for the NFT Royalty Standard.
*
* A standardized way to retrieve royalty payment information for non-fungible tokens (NFTs) to enable universal
* support for royalty payments across all NFT marketplaces and ecosystem participants.
*/
interface IERC2981 is IERC165 {
/**
* @dev Returns how much royalty is owed and to whom, based on a sale price that may be denominated in any unit of
* exchange. The royalty amount is denominated and should be paid in that same unit of exchange.
*
* NOTE: ERC-2981 allows setting the royalty to 100% of the price. In that case all the price would be sent to the
* royalty receiver and 0 tokens to the seller. Contracts dealing with royalty should consider empty transfers.
*/
function royaltyInfo(
uint256 tokenId,
uint256 salePrice
) external view returns (address receiver, uint256 royaltyAmount);
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (utils/math/Math.sol)
pragma solidity ^0.8.20;
import {Panic} from "../Panic.sol";
import {SafeCast} from "./SafeCast.sol";
/**
* @dev Standard math utilities missing in the Solidity language.
*/
library Math {
enum Rounding {
Floor, // Toward negative infinity
Ceil, // Toward positive infinity
Trunc, // Toward zero
Expand // Away from zero
}
/**
* @dev Returns the addition of two unsigned integers, with an success flag (no overflow).
*/
function tryAdd(uint256 a, uint256 b) internal pure returns (bool success, uint256 result) {
unchecked {
uint256 c = a + b;
if (c < a) return (false, 0);
return (true, c);
}
}
/**
* @dev Returns the subtraction of two unsigned integers, with an success flag (no overflow).
*/
function trySub(uint256 a, uint256 b) internal pure returns (bool success, uint256 result) {
unchecked {
if (b > a) return (false, 0);
return (true, a - b);
}
}
/**
* @dev Returns the multiplication of two unsigned integers, with an success flag (no overflow).
*/
function tryMul(uint256 a, uint256 b) internal pure returns (bool success, uint256 result) {
unchecked {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) return (true, 0);
uint256 c = a * b;
if (c / a != b) return (false, 0);
return (true, c);
}
}
/**
* @dev Returns the division of two unsigned integers, with a success flag (no division by zero).
*/
function tryDiv(uint256 a, uint256 b) internal pure returns (bool success, uint256 result) {
unchecked {
if (b == 0) return (false, 0);
return (true, a / b);
}
}
/**
* @dev Returns the remainder of dividing two unsigned integers, with a success flag (no division by zero).
*/
function tryMod(uint256 a, uint256 b) internal pure returns (bool success, uint256 result) {
unchecked {
if (b == 0) return (false, 0);
return (true, a % b);
}
}
/**
* @dev Branchless ternary evaluation for `a ? b : c`. Gas costs are constant.
*
* IMPORTANT: This function may reduce bytecode size and consume less gas when used standalone.
* However, the compiler may optimize Solidity ternary operations (i.e. `a ? b : c`) to only compute
* one branch when needed, making this function more expensive.
*/
function ternary(bool condition, uint256 a, uint256 b) internal pure returns (uint256) {
unchecked {
// branchless ternary works because:
// b ^ (a ^ b) == a
// b ^ 0 == b
return b ^ ((a ^ b) * SafeCast.toUint(condition));
}
}
/**
* @dev Returns the largest of two numbers.
*/
function max(uint256 a, uint256 b) internal pure returns (uint256) {
return ternary(a > b, a, b);
}
/**
* @dev Returns the smallest of two numbers.
*/
function min(uint256 a, uint256 b) internal pure returns (uint256) {
return ternary(a < b, a, b);
}
/**
* @dev Returns the average of two numbers. The result is rounded towards
* zero.
*/
function average(uint256 a, uint256 b) internal pure returns (uint256) {
// (a + b) / 2 can overflow.
return (a & b) + (a ^ b) / 2;
}
/**
* @dev Returns the ceiling of the division of two numbers.
*
* This differs from standard division with `/` in that it rounds towards infinity instead
* of rounding towards zero.
*/
function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) {
if (b == 0) {
// Guarantee the same behavior as in a regular Solidity division.
Panic.panic(Panic.DIVISION_BY_ZERO);
}
// The following calculation ensures accurate ceiling division without overflow.
// Since a is non-zero, (a - 1) / b will not overflow.
// The largest possible result occurs when (a - 1) / b is type(uint256).max,
// but the largest value we can obtain is type(uint256).max - 1, which happens
// when a = type(uint256).max and b = 1.
unchecked {
return SafeCast.toUint(a > 0) * ((a - 1) / b + 1);
}
}
/**
* @dev Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or
* denominator == 0.
*
* Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv) with further edits by
* Uniswap Labs also under MIT license.
*/
function mulDiv(uint256 x, uint256 y, uint256 denominator) internal pure returns (uint256 result) {
unchecked {
// 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2²⁵⁶ and mod 2²⁵⁶ - 1, then use
// the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256
// variables such that product = prod1 * 2²⁵⁶ + prod0.
uint256 prod0 = x * y; // Least significant 256 bits of the product
uint256 prod1; // Most significant 256 bits of the product
assembly {
let mm := mulmod(x, y, not(0))
prod1 := sub(sub(mm, prod0), lt(mm, prod0))
}
// Handle non-overflow cases, 256 by 256 division.
if (prod1 == 0) {
// Solidity will revert if denominator == 0, unlike the div opcode on its own.
// The surrounding unchecked block does not change this fact.
// See https://docs.soliditylang.org/en/latest/control-structures.html#checked-or-unchecked-arithmetic.
return prod0 / denominator;
}
// Make sure the result is less than 2²⁵⁶. Also prevents denominator == 0.
if (denominator <= prod1) {
Panic.panic(ternary(denominator == 0, Panic.DIVISION_BY_ZERO, Panic.UNDER_OVERFLOW));
}
///////////////////////////////////////////////
// 512 by 256 division.
///////////////////////////////////////////////
// Make division exact by subtracting the remainder from [prod1 prod0].
uint256 remainder;
assembly {
// Compute remainder using mulmod.
remainder := mulmod(x, y, denominator)
// Subtract 256 bit number from 512 bit number.
prod1 := sub(prod1, gt(remainder, prod0))
prod0 := sub(prod0, remainder)
}
// Factor powers of two out of denominator and compute largest power of two divisor of denominator.
// Always >= 1. See https://cs.stackexchange.com/q/138556/92363.
uint256 twos = denominator & (0 - denominator);
assembly {
// Divide denominator by twos.
denominator := div(denominator, twos)
// Divide [prod1 prod0] by twos.
prod0 := div(prod0, twos)
// Flip twos such that it is 2²⁵⁶ / twos. If twos is zero, then it becomes one.
twos := add(div(sub(0, twos), twos), 1)
}
// Shift in bits from prod1 into prod0.
prod0 |= prod1 * twos;
// Invert denominator mod 2²⁵⁶. Now that denominator is an odd number, it has an inverse modulo 2²⁵⁶ such
// that denominator * inv ≡ 1 mod 2²⁵⁶. Compute the inverse by starting with a seed that is correct for
// four bits. That is, denominator * inv ≡ 1 mod 2⁴.
uint256 inverse = (3 * denominator) ^ 2;
// Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also
// works in modular arithmetic, doubling the correct bits in each step.
inverse *= 2 - denominator * inverse; // inverse mod 2⁸
inverse *= 2 - denominator * inverse; // inverse mod 2¹⁶
inverse *= 2 - denominator * inverse; // inverse mod 2³²
inverse *= 2 - denominator * inverse; // inverse mod 2⁶⁴
inverse *= 2 - denominator * inverse; // inverse mod 2¹²⁸
inverse *= 2 - denominator * inverse; // inverse mod 2²⁵⁶
// Because the division is now exact we can divide by multiplying with the modular inverse of denominator.
// This will give us the correct result modulo 2²⁵⁶. Since the preconditions guarantee that the outcome is
// less than 2²⁵⁶, this is the final result. We don't need to compute the high bits of the result and prod1
// is no longer required.
result = prod0 * inverse;
return result;
}
}
/**
* @dev Calculates x * y / denominator with full precision, following the selected rounding direction.
*/
function mulDiv(uint256 x, uint256 y, uint256 denominator, Rounding rounding) internal pure returns (uint256) {
return mulDiv(x, y, denominator) + SafeCast.toUint(unsignedRoundsUp(rounding) && mulmod(x, y, denominator) > 0);
}
/**
* @dev Calculate the modular multiplicative inverse of a number in Z/nZ.
*
* If n is a prime, then Z/nZ is a field. In that case all elements are inversible, except 0.
* If n is not a prime, then Z/nZ is not a field, and some elements might not be inversible.
*
* If the input value is not inversible, 0 is returned.
*
* NOTE: If you know for sure that n is (big) a prime, it may be cheaper to use Fermat's little theorem and get the
* inverse using `Math.modExp(a, n - 2, n)`. See {invModPrime}.
*/
function invMod(uint256 a, uint256 n) internal pure returns (uint256) {
unchecked {
if (n == 0) return 0;
// The inverse modulo is calculated using the Extended Euclidean Algorithm (iterative version)
// Used to compute integers x and y such that: ax + ny = gcd(a, n).
// When the gcd is 1, then the inverse of a modulo n exists and it's x.
// ax + ny = 1
// ax = 1 + (-y)n
// ax ≡ 1 (mod n) # x is the inverse of a modulo n
// If the remainder is 0 the gcd is n right away.
uint256 remainder = a % n;
uint256 gcd = n;
// Therefore the initial coefficients are:
// ax + ny = gcd(a, n) = n
// 0a + 1n = n
int256 x = 0;
int256 y = 1;
while (remainder != 0) {
uint256 quotient = gcd / remainder;
(gcd, remainder) = (
// The old remainder is the next gcd to try.
remainder,
// Compute the next remainder.
// Can't overflow given that (a % gcd) * (gcd // (a % gcd)) <= gcd
// where gcd is at most n (capped to type(uint256).max)
gcd - remainder * quotient
);
(x, y) = (
// Increment the coefficient of a.
y,
// Decrement the coefficient of n.
// Can overflow, but the result is casted to uint256 so that the
// next value of y is "wrapped around" to a value between 0 and n - 1.
x - y * int256(quotient)
);
}
if (gcd != 1) return 0; // No inverse exists.
return ternary(x < 0, n - uint256(-x), uint256(x)); // Wrap the result if it's negative.
}
}
/**
* @dev Variant of {invMod}. More efficient, but only works if `p` is known to be a prime greater than `2`.
*
* From https://en.wikipedia.org/wiki/Fermat%27s_little_theorem[Fermat's little theorem], we know that if p is
* prime, then `a**(p-1) ≡ 1 mod p`. As a consequence, we have `a * a**(p-2) ≡ 1 mod p`, which means that
* `a**(p-2)` is the modular multiplicative inverse of a in Fp.
*
* NOTE: this function does NOT check that `p` is a prime greater than `2`.
*/
function invModPrime(uint256 a, uint256 p) internal view returns (uint256) {
unchecked {
return Math.modExp(a, p - 2, p);
}
}
/**
* @dev Returns the modular exponentiation of the specified base, exponent and modulus (b ** e % m)
*
* Requirements:
* - modulus can't be zero
* - underlying staticcall to precompile must succeed
*
* IMPORTANT: The result is only valid if the underlying call succeeds. When using this function, make
* sure the chain you're using it on supports the precompiled contract for modular exponentiation
* at address 0x05 as specified in https://eips.ethereum.org/EIPS/eip-198[EIP-198]. Otherwise,
* the underlying function will succeed given the lack of a revert, but the result may be incorrectly
* interpreted as 0.
*/
function modExp(uint256 b, uint256 e, uint256 m) internal view returns (uint256) {
(bool success, uint256 result) = tryModExp(b, e, m);
if (!success) {
Panic.panic(Panic.DIVISION_BY_ZERO);
}
return result;
}
/**
* @dev Returns the modular exponentiation of the specified base, exponent and modulus (b ** e % m).
* It includes a success flag indicating if the operation succeeded. Operation will be marked as failed if trying
* to operate modulo 0 or if the underlying precompile reverted.
*
* IMPORTANT: The result is only valid if the success flag is true. When using this function, make sure the chain
* you're using it on supports the precompiled contract for modular exponentiation at address 0x05 as specified in
* https://eips.ethereum.org/EIPS/eip-198[EIP-198]. Otherwise, the underlying function will succeed given the lack
* of a revert, but the result may be incorrectly interpreted as 0.
*/
function tryModExp(uint256 b, uint256 e, uint256 m) internal view returns (bool success, uint256 result) {
if (m == 0) return (false, 0);
assembly ("memory-safe") {
let ptr := mload(0x40)
// | Offset | Content | Content (Hex) |
// |-----------|------------|--------------------------------------------------------------------|
// | 0x00:0x1f | size of b | 0x0000000000000000000000000000000000000000000000000000000000000020 |
// | 0x20:0x3f | size of e | 0x0000000000000000000000000000000000000000000000000000000000000020 |
// | 0x40:0x5f | size of m | 0x0000000000000000000000000000000000000000000000000000000000000020 |
// | 0x60:0x7f | value of b | 0x<.............................................................b> |
// | 0x80:0x9f | value of e | 0x<.............................................................e> |
// | 0xa0:0xbf | value of m | 0x<.............................................................m> |
mstore(ptr, 0x20)
mstore(add(ptr, 0x20), 0x20)
mstore(add(ptr, 0x40), 0x20)
mstore(add(ptr, 0x60), b)
mstore(add(ptr, 0x80), e)
mstore(add(ptr, 0xa0), m)
// Given the result < m, it's guaranteed to fit in 32 bytes,
// so we can use the memory scratch space located at offset 0.
success := staticcall(gas(), 0x05, ptr, 0xc0, 0x00, 0x20)
result := mload(0x00)
}
}
/**
* @dev Variant of {modExp} that supports inputs of arbitrary length.
*/
function modExp(bytes memory b, bytes memory e, bytes memory m) internal view returns (bytes memory) {
(bool success, bytes memory result) = tryModExp(b, e, m);
if (!success) {
Panic.panic(Panic.DIVISION_BY_ZERO);
}
return result;
}
/**
* @dev Variant of {tryModExp} that supports inputs of arbitrary length.
*/
function tryModExp(
bytes memory b,
bytes memory e,
bytes memory m
) internal view returns (bool success, bytes memory result) {
if (_zeroBytes(m)) return (false, new bytes(0));
uint256 mLen = m.length;
// Encode call args in result and move the free memory pointer
result = abi.encodePacked(b.length, e.length, mLen, b, e, m);
assembly ("memory-safe") {
let dataPtr := add(result, 0x20)
// Write result on top of args to avoid allocating extra memory.
success := staticcall(gas(), 0x05, dataPtr, mload(result), dataPtr, mLen)
// Overwrite the length.
// result.length > returndatasize() is guaranteed because returndatasize() == m.length
mstore(result, mLen)
// Set the memory pointer after the returned data.
mstore(0x40, add(dataPtr, mLen))
}
}
/**
* @dev Returns whether the provided byte array is zero.
*/
function _zeroBytes(bytes memory byteArray) private pure returns (bool) {
for (uint256 i = 0; i < byteArray.length; ++i) {
if (byteArray[i] != 0) {
return false;
}
}
return true;
}
/**
* @dev Returns the square root of a number. If the number is not a perfect square, the value is rounded
* towards zero.
*
* This method is based on Newton's method for computing square roots; the algorithm is restricted to only
* using integer operations.
*/
function sqrt(uint256 a) internal pure returns (uint256) {
unchecked {
// Take care of easy edge cases when a == 0 or a == 1
if (a <= 1) {
return a;
}
// In this function, we use Newton's method to get a root of `f(x) := x² - a`. It involves building a
// sequence x_n that converges toward sqrt(a). For each iteration x_n, we also define the error between
// the current value as `ε_n = | x_n - sqrt(a) |`.
//
// For our first estimation, we consider `e` the smallest power of 2 which is bigger than the square root
// of the target. (i.e. `2**(e-1) ≤ sqrt(a) < 2**e`). We know that `e ≤ 128` because `(2¹²⁸)² = 2²⁵⁶` is
// bigger than any uint256.
//
// By noticing that
// `2**(e-1) ≤ sqrt(a) < 2**e → (2**(e-1))² ≤ a < (2**e)² → 2**(2*e-2) ≤ a < 2**(2*e)`
// we can deduce that `e - 1` is `log2(a) / 2`. We can thus compute `x_n = 2**(e-1)` using a method similar
// to the msb function.
uint256 aa = a;
uint256 xn = 1;
if (aa >= (1 << 128)) {
aa >>= 128;
xn <<= 64;
}
if (aa >= (1 << 64)) {
aa >>= 64;
xn <<= 32;
}
if (aa >= (1 << 32)) {
aa >>= 32;
xn <<= 16;
}
if (aa >= (1 << 16)) {
aa >>= 16;
xn <<= 8;
}
if (aa >= (1 << 8)) {
aa >>= 8;
xn <<= 4;
}
if (aa >= (1 << 4)) {
aa >>= 4;
xn <<= 2;
}
if (aa >= (1 << 2)) {
xn <<= 1;
}
// We now have x_n such that `x_n = 2**(e-1) ≤ sqrt(a) < 2**e = 2 * x_n`. This implies ε_n ≤ 2**(e-1).
//
// We can refine our estimation by noticing that the middle of that interval minimizes the error.
// If we move x_n to equal 2**(e-1) + 2**(e-2), then we reduce the error to ε_n ≤ 2**(e-2).
// This is going to be our x_0 (and ε_0)
xn = (3 * xn) >> 1; // ε_0 := | x_0 - sqrt(a) | ≤ 2**(e-2)
// From here, Newton's method give us:
// x_{n+1} = (x_n + a / x_n) / 2
//
// One should note that:
// x_{n+1}² - a = ((x_n + a / x_n) / 2)² - a
// = ((x_n² + a) / (2 * x_n))² - a
// = (x_n⁴ + 2 * a * x_n² + a²) / (4 * x_n²) - a
// = (x_n⁴ + 2 * a * x_n² + a² - 4 * a * x_n²) / (4 * x_n²)
// = (x_n⁴ - 2 * a * x_n² + a²) / (4 * x_n²)
// = (x_n² - a)² / (2 * x_n)²
// = ((x_n² - a) / (2 * x_n))²
// ≥ 0
// Which proves that for all n ≥ 1, sqrt(a) ≤ x_n
//
// This gives us the proof of quadratic convergence of the sequence:
// ε_{n+1} = | x_{n+1} - sqrt(a) |
// = | (x_n + a / x_n) / 2 - sqrt(a) |
// = | (x_n² + a - 2*x_n*sqrt(a)) / (2 * x_n) |
// = | (x_n - sqrt(a))² / (2 * x_n) |
// = | ε_n² / (2 * x_n) |
// = ε_n² / | (2 * x_n) |
//
// For the first iteration, we have a special case where x_0 is known:
// ε_1 = ε_0² / | (2 * x_0) |
// ≤ (2**(e-2))² / (2 * (2**(e-1) + 2**(e-2)))
// ≤ 2**(2*e-4) / (3 * 2**(e-1))
// ≤ 2**(e-3) / 3
// ≤ 2**(e-3-log2(3))
// ≤ 2**(e-4.5)
//
// For the following iterations, we use the fact that, 2**(e-1) ≤ sqrt(a) ≤ x_n:
// ε_{n+1} = ε_n² / | (2 * x_n) |
// ≤ (2**(e-k))² / (2 * 2**(e-1))
// ≤ 2**(2*e-2*k) / 2**e
// ≤ 2**(e-2*k)
xn = (xn + a / xn) >> 1; // ε_1 := | x_1 - sqrt(a) | ≤ 2**(e-4.5) -- special case, see above
xn = (xn + a / xn) >> 1; // ε_2 := | x_2 - sqrt(a) | ≤ 2**(e-9) -- general case with k = 4.5
xn = (xn + a / xn) >> 1; // ε_3 := | x_3 - sqrt(a) | ≤ 2**(e-18) -- general case with k = 9
xn = (xn + a / xn) >> 1; // ε_4 := | x_4 - sqrt(a) | ≤ 2**(e-36) -- general case with k = 18
xn = (xn + a / xn) >> 1; // ε_5 := | x_5 - sqrt(a) | ≤ 2**(e-72) -- general case with k = 36
xn = (xn + a / xn) >> 1; // ε_6 := | x_6 - sqrt(a) | ≤ 2**(e-144) -- general case with k = 72
// Because e ≤ 128 (as discussed during the first estimation phase), we know have reached a precision
// ε_6 ≤ 2**(e-144) < 1. Given we're operating on integers, then we can ensure that xn is now either
// sqrt(a) or sqrt(a) + 1.
return xn - SafeCast.toUint(xn > a / xn);
}
}
/**
* @dev Calculates sqrt(a), following the selected rounding direction.
*/
function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) {
unchecked {
uint256 result = sqrt(a);
return result + SafeCast.toUint(unsignedRoundsUp(rounding) && result * result < a);
}
}
/**
* @dev Return the log in base 2 of a positive value rounded towards zero.
* Returns 0 if given 0.
*/
function log2(uint256 x) internal pure returns (uint256 r) {
// If value has upper 128 bits set, log2 result is at least 128
r = SafeCast.toUint(x > 0xffffffffffffffffffffffffffffffff) << 7;
// If upper 64 bits of 128-bit half set, add 64 to result
r |= SafeCast.toUint((x >> r) > 0xffffffffffffffff) << 6;
// If upper 32 bits of 64-bit half set, add 32 to result
r |= SafeCast.toUint((x >> r) > 0xffffffff) << 5;
// If upper 16 bits of 32-bit half set, add 16 to result
r |= SafeCast.toUint((x >> r) > 0xffff) << 4;
// If upper 8 bits of 16-bit half set, add 8 to result
r |= SafeCast.toUint((x >> r) > 0xff) << 3;
// If upper 4 bits of 8-bit half set, add 4 to result
r |= SafeCast.toUint((x >> r) > 0xf) << 2;
// Shifts value right by the current result and use it as an index into this lookup table:
//
// | x (4 bits) | index | table[index] = MSB position |
// |------------|---------|-----------------------------|
// | 0000 | 0 | table[0] = 0 |
// | 0001 | 1 | table[1] = 0 |
// | 0010 | 2 | table[2] = 1 |
// | 0011 | 3 | table[3] = 1 |
// | 0100 | 4 | table[4] = 2 |
// | 0101 | 5 | table[5] = 2 |
// | 0110 | 6 | table[6] = 2 |
// | 0111 | 7 | table[7] = 2 |
// | 1000 | 8 | table[8] = 3 |
// | 1001 | 9 | table[9] = 3 |
// | 1010 | 10 | table[10] = 3 |
// | 1011 | 11 | table[11] = 3 |
// | 1100 | 12 | table[12] = 3 |
// | 1101 | 13 | table[13] = 3 |
// | 1110 | 14 | table[14] = 3 |
// | 1111 | 15 | table[15] = 3 |
//
// The lookup table is represented as a 32-byte value with the MSB positions for 0-15 in the last 16 bytes.
assembly ("memory-safe") {
r := or(r, byte(shr(r, x), 0x0000010102020202030303030303030300000000000000000000000000000000))
}
}
/**
* @dev Return the log in base 2, following the selected rounding direction, of a positive value.
* Returns 0 if given 0.
*/
function log2(uint256 value, Rounding rounding) internal pure returns (uint256) {
unchecked {
uint256 result = log2(value);
return result + SafeCast.toUint(unsignedRoundsUp(rounding) && 1 << result < value);
}
}
/**
* @dev Return the log in base 10 of a positive value rounded towards zero.
* Returns 0 if given 0.
*/
function log10(uint256 value) internal pure returns (uint256) {
uint256 result = 0;
unchecked {
if (value >= 10 ** 64) {
value /= 10 ** 64;
result += 64;
}
if (value >= 10 ** 32) {
value /= 10 ** 32;
result += 32;
}
if (value >= 10 ** 16) {
value /= 10 ** 16;
result += 16;
}
if (value >= 10 ** 8) {
value /= 10 ** 8;
result += 8;
}
if (value >= 10 ** 4) {
value /= 10 ** 4;
result += 4;
}
if (value >= 10 ** 2) {
value /= 10 ** 2;
result += 2;
}
if (value >= 10 ** 1) {
result += 1;
}
}
return result;
}
/**
* @dev Return the log in base 10, following the selected rounding direction, of a positive value.
* Returns 0 if given 0.
*/
function log10(uint256 value, Rounding rounding) internal pure returns (uint256) {
unchecked {
uint256 result = log10(value);
return result + SafeCast.toUint(unsignedRoundsUp(rounding) && 10 ** result < value);
}
}
/**
* @dev Return the log in base 256 of a positive value rounded towards zero.
* Returns 0 if given 0.
*
* Adding one to the result gives the number of pairs of hex symbols needed to represent `value` as a hex string.
*/
function log256(uint256 x) internal pure returns (uint256 r) {
// If value has upper 128 bits set, log2 result is at least 128
r = SafeCast.toUint(x > 0xffffffffffffffffffffffffffffffff) << 7;
// If upper 64 bits of 128-bit half set, add 64 to result
r |= SafeCast.toUint((x >> r) > 0xffffffffffffffff) << 6;
// If upper 32 bits of 64-bit half set, add 32 to result
r |= SafeCast.toUint((x >> r) > 0xffffffff) << 5;
// If upper 16 bits of 32-bit half set, add 16 to result
r |= SafeCast.toUint((x >> r) > 0xffff) << 4;
// Add 1 if upper 8 bits of 16-bit half set, and divide accumulated result by 8
return (r >> 3) | SafeCast.toUint((x >> r) > 0xff);
}
/**
* @dev Return the log in base 256, following the selected rounding direction, of a positive value.
* Returns 0 if given 0.
*/
function log256(uint256 value, Rounding rounding) internal pure returns (uint256) {
unchecked {
uint256 result = log256(value);
return result + SafeCast.toUint(unsignedRoundsUp(rounding) && 1 << (result << 3) < value);
}
}
/**
* @dev Returns whether a provided rounding mode is considered rounding up for unsigned integers.
*/
function unsignedRoundsUp(Rounding rounding) internal pure returns (bool) {
return uint8(rounding) % 2 == 1;
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (utils/math/SafeCast.sol)
// This file was procedurally generated from scripts/generate/templates/SafeCast.js.
pragma solidity ^0.8.20;
/**
* @dev Wrappers over Solidity's uintXX/intXX/bool casting operators with added overflow
* checks.
*
* Downcasting from uint256/int256 in Solidity does not revert on overflow. This can
* easily result in undesired exploitation or bugs, since developers usually
* assume that overflows raise errors. `SafeCast` restores this intuition by
* reverting the transaction when such an operation overflows.
*
* Using this library instead of the unchecked operations eliminates an entire
* class of bugs, so it's recommended to use it always.
*/
library SafeCast {
/**
* @dev Value doesn't fit in an uint of `bits` size.
*/
error SafeCastOverflowedUintDowncast(uint8 bits, uint256 value);
/**
* @dev An int value doesn't fit in an uint of `bits` size.
*/
error SafeCastOverflowedIntToUint(int256 value);
/**
* @dev Value doesn't fit in an int of `bits` size.
*/
error SafeCastOverflowedIntDowncast(uint8 bits, int256 value);
/**
* @dev An uint value doesn't fit in an int of `bits` size.
*/
error SafeCastOverflowedUintToInt(uint256 value);
/**
* @dev Returns the downcasted uint248 from uint256, reverting on
* overflow (when the input is greater than largest uint248).
*
* Counterpart to Solidity's `uint248` operator.
*
* Requirements:
*
* - input must fit into 248 bits
*/
function toUint248(uint256 value) internal pure returns (uint248) {
if (value > type(uint248).max) {
revert SafeCastOverflowedUintDowncast(248, value);
}
return uint248(value);
}
/**
* @dev Returns the downcasted uint240 from uint256, reverting on
* overflow (when the input is greater than largest uint240).
*
* Counterpart to Solidity's `uint240` operator.
*
* Requirements:
*
* - input must fit into 240 bits
*/
function toUint240(uint256 value) internal pure returns (uint240) {
if (value > type(uint240).max) {
revert SafeCastOverflowedUintDowncast(240, value);
}
return uint240(value);
}
/**
* @dev Returns the downcasted uint232 from uint256, reverting on
* overflow (when the input is greater than largest uint232).
*
* Counterpart to Solidity's `uint232` operator.
*
* Requirements:
*
* - input must fit into 232 bits
*/
function toUint232(uint256 value) internal pure returns (uint232) {
if (value > type(uint232).max) {
revert SafeCastOverflowedUintDowncast(232, value);
}
return uint232(value);
}
/**
* @dev Returns the downcasted uint224 from uint256, reverting on
* overflow (when the input is greater than largest uint224).
*
* Counterpart to Solidity's `uint224` operator.
*
* Requirements:
*
* - input must fit into 224 bits
*/
function toUint224(uint256 value) internal pure returns (uint224) {
if (value > type(uint224).max) {
revert SafeCastOverflowedUintDowncast(224, value);
}
return uint224(value);
}
/**
* @dev Returns the downcasted uint216 from uint256, reverting on
* overflow (when the input is greater than largest uint216).
*
* Counterpart to Solidity's `uint216` operator.
*
* Requirements:
*
* - input must fit into 216 bits
*/
function toUint216(uint256 value) internal pure returns (uint216) {
if (value > type(uint216).max) {
revert SafeCastOverflowedUintDowncast(216, value);
}
return uint216(value);
}
/**
* @dev Returns the downcasted uint208 from uint256, reverting on
* overflow (when the input is greater than largest uint208).
*
* Counterpart to Solidity's `uint208` operator.
*
* Requirements:
*
* - input must fit into 208 bits
*/
function toUint208(uint256 value) internal pure returns (uint208) {
if (value > type(uint208).max) {
revert SafeCastOverflowedUintDowncast(208, value);
}
return uint208(value);
}
/**
* @dev Returns the downcasted uint200 from uint256, reverting on
* overflow (when the input is greater than largest uint200).
*
* Counterpart to Solidity's `uint200` operator.
*
* Requirements:
*
* - input must fit into 200 bits
*/
function toUint200(uint256 value) internal pure returns (uint200) {
if (value > type(uint200).max) {
revert SafeCastOverflowedUintDowncast(200, value);
}
return uint200(value);
}
/**
* @dev Returns the downcasted uint192 from uint256, reverting on
* overflow (when the input is greater than largest uint192).
*
* Counterpart to Solidity's `uint192` operator.
*
* Requirements:
*
* - input must fit into 192 bits
*/
function toUint192(uint256 value) internal pure returns (uint192) {
if (value > type(uint192).max) {
revert SafeCastOverflowedUintDowncast(192, value);
}
return uint192(value);
}
/**
* @dev Returns the downcasted uint184 from uint256, reverting on
* overflow (when the input is greater than largest uint184).
*
* Counterpart to Solidity's `uint184` operator.
*
* Requirements:
*
* - input must fit into 184 bits
*/
function toUint184(uint256 value) internal pure returns (uint184) {
if (value > type(uint184).max) {
revert SafeCastOverflowedUintDowncast(184, value);
}
return uint184(value);
}
/**
* @dev Returns the downcasted uint176 from uint256, reverting on
* overflow (when the input is greater than largest uint176).
*
* Counterpart to Solidity's `uint176` operator.
*
* Requirements:
*
* - input must fit into 176 bits
*/
function toUint176(uint256 value) internal pure returns (uint176) {
if (value > type(uint176).max) {
revert SafeCastOverflowedUintDowncast(176, value);
}
return uint176(value);
}
/**
* @dev Returns the downcasted uint168 from uint256, reverting on
* overflow (when the input is greater than largest uint168).
*
* Counterpart to Solidity's `uint168` operator.
*
* Requirements:
*
* - input must fit into 168 bits
*/
function toUint168(uint256 value) internal pure returns (uint168) {
if (value > type(uint168).max) {
revert SafeCastOverflowedUintDowncast(168, value);
}
return uint168(value);
}
/**
* @dev Returns the downcasted uint160 from uint256, reverting on
* overflow (when the input is greater than largest uint160).
*
* Counterpart to Solidity's `uint160` operator.
*
* Requirements:
*
* - input must fit into 160 bits
*/
function toUint160(uint256 value) internal pure returns (uint160) {
if (value > type(uint160).max) {
revert SafeCastOverflowedUintDowncast(160, value);
}
return uint160(value);
}
/**
* @dev Returns the downcasted uint152 from uint256, reverting on
* overflow (when the input is greater than largest uint152).
*
* Counterpart to Solidity's `uint152` operator.
*
* Requirements:
*
* - input must fit into 152 bits
*/
function toUint152(uint256 value) internal pure returns (uint152) {
if (value > type(uint152).max) {
revert SafeCastOverflowedUintDowncast(152, value);
}
return uint152(value);
}
/**
* @dev Returns the downcasted uint144 from uint256, reverting on
* overflow (when the input is greater than largest uint144).
*
* Counterpart to Solidity's `uint144` operator.
*
* Requirements:
*
* - input must fit into 144 bits
*/
function toUint144(uint256 value) internal pure returns (uint144) {
if (value > type(uint144).max) {
revert SafeCastOverflowedUintDowncast(144, value);
}
return uint144(value);
}
/**
* @dev Returns the downcasted uint136 from uint256, reverting on
* overflow (when the input is greater than largest uint136).
*
* Counterpart to Solidity's `uint136` operator.
*
* Requirements:
*
* - input must fit into 136 bits
*/
function toUint136(uint256 value) internal pure returns (uint136) {
if (value > type(uint136).max) {
revert SafeCastOverflowedUintDowncast(136, value);
}
return uint136(value);
}
/**
* @dev Returns the downcasted uint128 from uint256, reverting on
* overflow (when the input is greater than largest uint128).
*
* Counterpart to Solidity's `uint128` operator.
*
* Requirements:
*
* - input must fit into 128 bits
*/
function toUint128(uint256 value) internal pure returns (uint128) {
if (value > type(uint128).max) {
revert SafeCastOverflowedUintDowncast(128, value);
}
return uint128(value);
}
/**
* @dev Returns the downcasted uint120 from uint256, reverting on
* overflow (when the input is greater than largest uint120).
*
* Counterpart to Solidity's `uint120` operator.
*
* Requirements:
*
* - input must fit into 120 bits
*/
function toUint120(uint256 value) internal pure returns (uint120) {
if (value > type(uint120).max) {
revert SafeCastOverflowedUintDowncast(120, value);
}
return uint120(value);
}
/**
* @dev Returns the downcasted uint112 from uint256, reverting on
* overflow (when the input is greater than largest uint112).
*
* Counterpart to Solidity's `uint112` operator.
*
* Requirements:
*
* - input must fit into 112 bits
*/
function toUint112(uint256 value) internal pure returns (uint112) {
if (value > type(uint112).max) {
revert SafeCastOverflowedUintDowncast(112, value);
}
return uint112(value);
}
/**
* @dev Returns the downcasted uint104 from uint256, reverting on
* overflow (when the input is greater than largest uint104).
*
* Counterpart to Solidity's `uint104` operator.
*
* Requirements:
*
* - input must fit into 104 bits
*/
function toUint104(uint256 value) internal pure returns (uint104) {
if (value > type(uint104).max) {
revert SafeCastOverflowedUintDowncast(104, value);
}
return uint104(value);
}
/**
* @dev Returns the downcasted uint96 from uint256, reverting on
* overflow (when the input is greater than largest uint96).
*
* Counterpart to Solidity's `uint96` operator.
*
* Requirements:
*
* - input must fit into 96 bits
*/
function toUint96(uint256 value) internal pure returns (uint96) {
if (value > type(uint96).max) {
revert SafeCastOverflowedUintDowncast(96, value);
}
return uint96(value);
}
/**
* @dev Returns the downcasted uint88 from uint256, reverting on
* overflow (when the input is greater than largest uint88).
*
* Counterpart to Solidity's `uint88` operator.
*
* Requirements:
*
* - input must fit into 88 bits
*/
function toUint88(uint256 value) internal pure returns (uint88) {
if (value > type(uint88).max) {
revert SafeCastOverflowedUintDowncast(88, value);
}
return uint88(value);
}
/**
* @dev Returns the downcasted uint80 from uint256, reverting on
* overflow (when the input is greater than largest uint80).
*
* Counterpart to Solidity's `uint80` operator.
*
* Requirements:
*
* - input must fit into 80 bits
*/
function toUint80(uint256 value) internal pure returns (uint80) {
if (value > type(uint80).max) {
revert SafeCastOverflowedUintDowncast(80, value);
}
return uint80(value);
}
/**
* @dev Returns the downcasted uint72 from uint256, reverting on
* overflow (when the input is greater than largest uint72).
*
* Counterpart to Solidity's `uint72` operator.
*
* Requirements:
*
* - input must fit into 72 bits
*/
function toUint72(uint256 value) internal pure returns (uint72) {
if (value > type(uint72).max) {
revert SafeCastOverflowedUintDowncast(72, value);
}
return uint72(value);
}
/**
* @dev Returns the downcasted uint64 from uint256, reverting on
* overflow (when the input is greater than largest uint64).
*
* Counterpart to Solidity's `uint64` operator.
*
* Requirements:
*
* - input must fit into 64 bits
*/
function toUint64(uint256 value) internal pure returns (uint64) {
if (value > type(uint64).max) {
revert SafeCastOverflowedUintDowncast(64, value);
}
return uint64(value);
}
/**
* @dev Returns the downcasted uint56 from uint256, reverting on
* overflow (when the input is greater than largest uint56).
*
* Counterpart to Solidity's `uint56` operator.
*
* Requirements:
*
* - input must fit into 56 bits
*/
function toUint56(uint256 value) internal pure returns (uint56) {
if (value > type(uint56).max) {
revert SafeCastOverflowedUintDowncast(56, value);
}
return uint56(value);
}
/**
* @dev Returns the downcasted uint48 from uint256, reverting on
* overflow (when the input is greater than largest uint48).
*
* Counterpart to Solidity's `uint48` operator.
*
* Requirements:
*
* - input must fit into 48 bits
*/
function toUint48(uint256 value) internal pure returns (uint48) {
if (value > type(uint48).max) {
revert SafeCastOverflowedUintDowncast(48, value);
}
return uint48(value);
}
/**
* @dev Returns the downcasted uint40 from uint256, reverting on
* overflow (when the input is greater than largest uint40).
*
* Counterpart to Solidity's `uint40` operator.
*
* Requirements:
*
* - input must fit into 40 bits
*/
function toUint40(uint256 value) internal pure returns (uint40) {
if (value > type(uint40).max) {
revert SafeCastOverflowedUintDowncast(40, value);
}
return uint40(value);
}
/**
* @dev Returns the downcasted uint32 from uint256, reverting on
* overflow (when the input is greater than largest uint32).
*
* Counterpart to Solidity's `uint32` operator.
*
* Requirements:
*
* - input must fit into 32 bits
*/
function toUint32(uint256 value) internal pure returns (uint32) {
if (value > type(uint32).max) {
revert SafeCastOverflowedUintDowncast(32, value);
}
return uint32(value);
}
/**
* @dev Returns the downcasted uint24 from uint256, reverting on
* overflow (when the input is greater than largest uint24).
*
* Counterpart to Solidity's `uint24` operator.
*
* Requirements:
*
* - input must fit into 24 bits
*/
function toUint24(uint256 value) internal pure returns (uint24) {
if (value > type(uint24).max) {
revert SafeCastOverflowedUintDowncast(24, value);
}
return uint24(value);
}
/**
* @dev Returns the downcasted uint16 from uint256, reverting on
* overflow (when the input is greater than largest uint16).
*
* Counterpart to Solidity's `uint16` operator.
*
* Requirements:
*
* - input must fit into 16 bits
*/
function toUint16(uint256 value) internal pure returns (uint16) {
if (value > type(uint16).max) {
revert SafeCastOverflowedUintDowncast(16, value);
}
return uint16(value);
}
/**
* @dev Returns the downcasted uint8 from uint256, reverting on
* overflow (when the input is greater than largest uint8).
*
* Counterpart to Solidity's `uint8` operator.
*
* Requirements:
*
* - input must fit into 8 bits
*/
function toUint8(uint256 value) internal pure returns (uint8) {
if (value > type(uint8).max) {
revert SafeCastOverflowedUintDowncast(8, value);
}
return uint8(value);
}
/**
* @dev Converts a signed int256 into an unsigned uint256.
*
* Requirements:
*
* - input must be greater than or equal to 0.
*/
function toUint256(int256 value) internal pure returns (uint256) {
if (value < 0) {
revert SafeCastOverflowedIntToUint(value);
}
return uint256(value);
}
/**
* @dev Returns the downcasted int248 from int256, reverting on
* overflow (when the input is less than smallest int248 or
* greater than largest int248).
*
* Counterpart to Solidity's `int248` operator.
*
* Requirements:
*
* - input must fit into 248 bits
*/
function toInt248(int256 value) internal pure returns (int248 downcasted) {
downcasted = int248(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(248, value);
}
}
/**
* @dev Returns the downcasted int240 from int256, reverting on
* overflow (when the input is less than smallest int240 or
* greater than largest int240).
*
* Counterpart to Solidity's `int240` operator.
*
* Requirements:
*
* - input must fit into 240 bits
*/
function toInt240(int256 value) internal pure returns (int240 downcasted) {
downcasted = int240(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(240, value);
}
}
/**
* @dev Returns the downcasted int232 from int256, reverting on
* overflow (when the input is less than smallest int232 or
* greater than largest int232).
*
* Counterpart to Solidity's `int232` operator.
*
* Requirements:
*
* - input must fit into 232 bits
*/
function toInt232(int256 value) internal pure returns (int232 downcasted) {
downcasted = int232(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(232, value);
}
}
/**
* @dev Returns the downcasted int224 from int256, reverting on
* overflow (when the input is less than smallest int224 or
* greater than largest int224).
*
* Counterpart to Solidity's `int224` operator.
*
* Requirements:
*
* - input must fit into 224 bits
*/
function toInt224(int256 value) internal pure returns (int224 downcasted) {
downcasted = int224(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(224, value);
}
}
/**
* @dev Returns the downcasted int216 from int256, reverting on
* overflow (when the input is less than smallest int216 or
* greater than largest int216).
*
* Counterpart to Solidity's `int216` operator.
*
* Requirements:
*
* - input must fit into 216 bits
*/
function toInt216(int256 value) internal pure returns (int216 downcasted) {
downcasted = int216(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(216, value);
}
}
/**
* @dev Returns the downcasted int208 from int256, reverting on
* overflow (when the input is less than smallest int208 or
* greater than largest int208).
*
* Counterpart to Solidity's `int208` operator.
*
* Requirements:
*
* - input must fit into 208 bits
*/
function toInt208(int256 value) internal pure returns (int208 downcasted) {
downcasted = int208(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(208, value);
}
}
/**
* @dev Returns the downcasted int200 from int256, reverting on
* overflow (when the input is less than smallest int200 or
* greater than largest int200).
*
* Counterpart to Solidity's `int200` operator.
*
* Requirements:
*
* - input must fit into 200 bits
*/
function toInt200(int256 value) internal pure returns (int200 downcasted) {
downcasted = int200(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(200, value);
}
}
/**
* @dev Returns the downcasted int192 from int256, reverting on
* overflow (when the input is less than smallest int192 or
* greater than largest int192).
*
* Counterpart to Solidity's `int192` operator.
*
* Requirements:
*
* - input must fit into 192 bits
*/
function toInt192(int256 value) internal pure returns (int192 downcasted) {
downcasted = int192(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(192, value);
}
}
/**
* @dev Returns the downcasted int184 from int256, reverting on
* overflow (when the input is less than smallest int184 or
* greater than largest int184).
*
* Counterpart to Solidity's `int184` operator.
*
* Requirements:
*
* - input must fit into 184 bits
*/
function toInt184(int256 value) internal pure returns (int184 downcasted) {
downcasted = int184(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(184, value);
}
}
/**
* @dev Returns the downcasted int176 from int256, reverting on
* overflow (when the input is less than smallest int176 or
* greater than largest int176).
*
* Counterpart to Solidity's `int176` operator.
*
* Requirements:
*
* - input must fit into 176 bits
*/
function toInt176(int256 value) internal pure returns (int176 downcasted) {
downcasted = int176(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(176, value);
}
}
/**
* @dev Returns the downcasted int168 from int256, reverting on
* overflow (when the input is less than smallest int168 or
* greater than largest int168).
*
* Counterpart to Solidity's `int168` operator.
*
* Requirements:
*
* - input must fit into 168 bits
*/
function toInt168(int256 value) internal pure returns (int168 downcasted) {
downcasted = int168(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(168, value);
}
}
/**
* @dev Returns the downcasted int160 from int256, reverting on
* overflow (when the input is less than smallest int160 or
* greater than largest int160).
*
* Counterpart to Solidity's `int160` operator.
*
* Requirements:
*
* - input must fit into 160 bits
*/
function toInt160(int256 value) internal pure returns (int160 downcasted) {
downcasted = int160(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(160, value);
}
}
/**
* @dev Returns the downcasted int152 from int256, reverting on
* overflow (when the input is less than smallest int152 or
* greater than largest int152).
*
* Counterpart to Solidity's `int152` operator.
*
* Requirements:
*
* - input must fit into 152 bits
*/
function toInt152(int256 value) internal pure returns (int152 downcasted) {
downcasted = int152(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(152, value);
}
}
/**
* @dev Returns the downcasted int144 from int256, reverting on
* overflow (when the input is less than smallest int144 or
* greater than largest int144).
*
* Counterpart to Solidity's `int144` operator.
*
* Requirements:
*
* - input must fit into 144 bits
*/
function toInt144(int256 value) internal pure returns (int144 downcasted) {
downcasted = int144(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(144, value);
}
}
/**
* @dev Returns the downcasted int136 from int256, reverting on
* overflow (when the input is less than smallest int136 or
* greater than largest int136).
*
* Counterpart to Solidity's `int136` operator.
*
* Requirements:
*
* - input must fit into 136 bits
*/
function toInt136(int256 value) internal pure returns (int136 downcasted) {
downcasted = int136(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(136, value);
}
}
/**
* @dev Returns the downcasted int128 from int256, reverting on
* overflow (when the input is less than smallest int128 or
* greater than largest int128).
*
* Counterpart to Solidity's `int128` operator.
*
* Requirements:
*
* - input must fit into 128 bits
*/
function toInt128(int256 value) internal pure returns (int128 downcasted) {
downcasted = int128(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(128, value);
}
}
/**
* @dev Returns the downcasted int120 from int256, reverting on
* overflow (when the input is less than smallest int120 or
* greater than largest int120).
*
* Counterpart to Solidity's `int120` operator.
*
* Requirements:
*
* - input must fit into 120 bits
*/
function toInt120(int256 value) internal pure returns (int120 downcasted) {
downcasted = int120(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(120, value);
}
}
/**
* @dev Returns the downcasted int112 from int256, reverting on
* overflow (when the input is less than smallest int112 or
* greater than largest int112).
*
* Counterpart to Solidity's `int112` operator.
*
* Requirements:
*
* - input must fit into 112 bits
*/
function toInt112(int256 value) internal pure returns (int112 downcasted) {
downcasted = int112(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(112, value);
}
}
/**
* @dev Returns the downcasted int104 from int256, reverting on
* overflow (when the input is less than smallest int104 or
* greater than largest int104).
*
* Counterpart to Solidity's `int104` operator.
*
* Requirements:
*
* - input must fit into 104 bits
*/
function toInt104(int256 value) internal pure returns (int104 downcasted) {
downcasted = int104(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(104, value);
}
}
/**
* @dev Returns the downcasted int96 from int256, reverting on
* overflow (when the input is less than smallest int96 or
* greater than largest int96).
*
* Counterpart to Solidity's `int96` operator.
*
* Requirements:
*
* - input must fit into 96 bits
*/
function toInt96(int256 value) internal pure returns (int96 downcasted) {
downcasted = int96(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(96, value);
}
}
/**
* @dev Returns the downcasted int88 from int256, reverting on
* overflow (when the input is less than smallest int88 or
* greater than largest int88).
*
* Counterpart to Solidity's `int88` operator.
*
* Requirements:
*
* - input must fit into 88 bits
*/
function toInt88(int256 value) internal pure returns (int88 downcasted) {
downcasted = int88(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(88, value);
}
}
/**
* @dev Returns the downcasted int80 from int256, reverting on
* overflow (when the input is less than smallest int80 or
* greater than largest int80).
*
* Counterpart to Solidity's `int80` operator.
*
* Requirements:
*
* - input must fit into 80 bits
*/
function toInt80(int256 value) internal pure returns (int80 downcasted) {
downcasted = int80(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(80, value);
}
}
/**
* @dev Returns the downcasted int72 from int256, reverting on
* overflow (when the input is less than smallest int72 or
* greater than largest int72).
*
* Counterpart to Solidity's `int72` operator.
*
* Requirements:
*
* - input must fit into 72 bits
*/
function toInt72(int256 value) internal pure returns (int72 downcasted) {
downcasted = int72(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(72, value);
}
}
/**
* @dev Returns the downcasted int64 from int256, reverting on
* overflow (when the input is less than smallest int64 or
* greater than largest int64).
*
* Counterpart to Solidity's `int64` operator.
*
* Requirements:
*
* - input must fit into 64 bits
*/
function toInt64(int256 value) internal pure returns (int64 downcasted) {
downcasted = int64(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(64, value);
}
}
/**
* @dev Returns the downcasted int56 from int256, reverting on
* overflow (when the input is less than smallest int56 or
* greater than largest int56).
*
* Counterpart to Solidity's `int56` operator.
*
* Requirements:
*
* - input must fit into 56 bits
*/
function toInt56(int256 value) internal pure returns (int56 downcasted) {
downcasted = int56(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(56, value);
}
}
/**
* @dev Returns the downcasted int48 from int256, reverting on
* overflow (when the input is less than smallest int48 or
* greater than largest int48).
*
* Counterpart to Solidity's `int48` operator.
*
* Requirements:
*
* - input must fit into 48 bits
*/
function toInt48(int256 value) internal pure returns (int48 downcasted) {
downcasted = int48(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(48, value);
}
}
/**
* @dev Returns the downcasted int40 from int256, reverting on
* overflow (when the input is less than smallest int40 or
* greater than largest int40).
*
* Counterpart to Solidity's `int40` operator.
*
* Requirements:
*
* - input must fit into 40 bits
*/
function toInt40(int256 value) internal pure returns (int40 downcasted) {
downcasted = int40(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(40, value);
}
}
/**
* @dev Returns the downcasted int32 from int256, reverting on
* overflow (when the input is less than smallest int32 or
* greater than largest int32).
*
* Counterpart to Solidity's `int32` operator.
*
* Requirements:
*
* - input must fit into 32 bits
*/
function toInt32(int256 value) internal pure returns (int32 downcasted) {
downcasted = int32(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(32, value);
}
}
/**
* @dev Returns the downcasted int24 from int256, reverting on
* overflow (when the input is less than smallest int24 or
* greater than largest int24).
*
* Counterpart to Solidity's `int24` operator.
*
* Requirements:
*
* - input must fit into 24 bits
*/
function toInt24(int256 value) internal pure returns (int24 downcasted) {
downcasted = int24(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(24, value);
}
}
/**
* @dev Returns the downcasted int16 from int256, reverting on
* overflow (when the input is less than smallest int16 or
* greater than largest int16).
*
* Counterpart to Solidity's `int16` operator.
*
* Requirements:
*
* - input must fit into 16 bits
*/
function toInt16(int256 value) internal pure returns (int16 downcasted) {
downcasted = int16(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(16, value);
}
}
/**
* @dev Returns the downcasted int8 from int256, reverting on
* overflow (when the input is less than smallest int8 or
* greater than largest int8).
*
* Counterpart to Solidity's `int8` operator.
*
* Requirements:
*
* - input must fit into 8 bits
*/
function toInt8(int256 value) internal pure returns (int8 downcasted) {
downcasted = int8(value);
if (downcasted != value) {
revert SafeCastOverflowedIntDowncast(8, value);
}
}
/**
* @dev Converts an unsigned uint256 into a signed int256.
*
* Requirements:
*
* - input must be less than or equal to maxInt256.
*/
function toInt256(uint256 value) internal pure returns (int256) {
// Note: Unsafe cast below is okay because `type(int256).max` is guaranteed to be positive
if (value > uint256(type(int256).max)) {
revert SafeCastOverflowedUintToInt(value);
}
return int256(value);
}
/**
* @dev Cast a boolean (false or true) to a uint256 (0 or 1) with no jump.
*/
function toUint(bool b) internal pure returns (uint256 u) {
assembly ("memory-safe") {
u := iszero(iszero(b))
}
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (utils/math/SignedMath.sol)
pragma solidity ^0.8.20;
import {SafeCast} from "./SafeCast.sol";
/**
* @dev Standard signed math utilities missing in the Solidity language.
*/
library SignedMath {
/**
* @dev Branchless ternary evaluation for `a ? b : c`. Gas costs are constant.
*
* IMPORTANT: This function may reduce bytecode size and consume less gas when used standalone.
* However, the compiler may optimize Solidity ternary operations (i.e. `a ? b : c`) to only compute
* one branch when needed, making this function more expensive.
*/
function ternary(bool condition, int256 a, int256 b) internal pure returns (int256) {
unchecked {
// branchless ternary works because:
// b ^ (a ^ b) == a
// b ^ 0 == b
return b ^ ((a ^ b) * int256(SafeCast.toUint(condition)));
}
}
/**
* @dev Returns the largest of two signed numbers.
*/
function max(int256 a, int256 b) internal pure returns (int256) {
return ternary(a > b, a, b);
}
/**
* @dev Returns the smallest of two signed numbers.
*/
function min(int256 a, int256 b) internal pure returns (int256) {
return ternary(a < b, a, b);
}
/**
* @dev Returns the average of two signed numbers without overflow.
* The result is rounded towards zero.
*/
function average(int256 a, int256 b) internal pure returns (int256) {
// Formula from the book "Hacker's Delight"
int256 x = (a & b) + ((a ^ b) >> 1);
return x + (int256(uint256(x) >> 255) & (a ^ b));
}
/**
* @dev Returns the absolute unsigned value of a signed value.
*/
function abs(int256 n) internal pure returns (uint256) {
unchecked {
// Formula from the "Bit Twiddling Hacks" by Sean Eron Anderson.
// Since `n` is a signed integer, the generated bytecode will use the SAR opcode to perform the right shift,
// taking advantage of the most significant (or "sign" bit) in two's complement representation.
// This opcode adds new most significant bits set to the value of the previous most significant bit. As a result,
// the mask will either be `bytes32(0)` (if n is positive) or `~bytes32(0)` (if n is negative).
int256 mask = n >> 255;
// A `bytes32(0)` mask leaves the input unchanged, while a `~bytes32(0)` mask complements it.
return uint256((n + mask) ^ mask);
}
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (utils/introspection/IERC165.sol)
pragma solidity ^0.8.20;
/**
* @dev Interface of the ERC-165 standard, as defined in the
* https://eips.ethereum.org/EIPS/eip-165[ERC].
*
* Implementers can declare support of contract interfaces, which can then be
* queried by others ({ERC165Checker}).
*
* For an implementation, see {ERC165}.
*/
interface IERC165 {
/**
* @dev Returns true if this contract implements the interface defined by
* `interfaceId`. See the corresponding
* https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[ERC section]
* to learn more about how these ids are created.
*
* This function call must use less than 30 000 gas.
*/
function supportsInterface(bytes4 interfaceId) external view returns (bool);
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (token/ERC721/IERC721Receiver.sol)
pragma solidity ^0.8.20;
/**
* @title ERC-721 token receiver interface
* @dev Interface for any contract that wants to support safeTransfers
* from ERC-721 asset contracts.
*/
interface IERC721Receiver {
/**
* @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}
* by `operator` from `from`, this function is called.
*
* It must return its Solidity selector to confirm the token transfer.
* If any other value is returned or the interface is not implemented by the recipient, the transfer will be
* reverted.
*
* The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`.
*/
function onERC721Received(
address operator,
address from,
uint256 tokenId,
bytes calldata data
) external returns (bytes4);
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.1.0) (utils/Panic.sol)
pragma solidity ^0.8.20;
/**
* @dev Helper library for emitting standardized panic codes.
*
* ```solidity
* contract Example {
* using Panic for uint256;
*
* // Use any of the declared internal constants
* function foo() { Panic.GENERIC.panic(); }
*
* // Alternatively
* function foo() { Panic.panic(Panic.GENERIC); }
* }
* ```
*
* Follows the list from https://github.com/ethereum/solidity/blob/v0.8.24/libsolutil/ErrorCodes.h[libsolutil].
*
* _Available since v5.1._
*/
// slither-disable-next-line unused-state
library Panic {
/// @dev generic / unspecified error
uint256 internal constant GENERIC = 0x00;
/// @dev used by the assert() builtin
uint256 internal constant ASSERT = 0x01;
/// @dev arithmetic underflow or overflow
uint256 internal constant UNDER_OVERFLOW = 0x11;
/// @dev division or modulo by zero
uint256 internal constant DIVISION_BY_ZERO = 0x12;
/// @dev enum conversion error
uint256 internal constant ENUM_CONVERSION_ERROR = 0x21;
/// @dev invalid encoding in storage
uint256 internal constant STORAGE_ENCODING_ERROR = 0x22;
/// @dev empty array pop
uint256 internal constant EMPTY_ARRAY_POP = 0x31;
/// @dev array out of bounds access
uint256 internal constant ARRAY_OUT_OF_BOUNDS = 0x32;
/// @dev resource error (too large allocation or too large array)
uint256 internal constant RESOURCE_ERROR = 0x41;
/// @dev calling invalid internal function
uint256 internal constant INVALID_INTERNAL_FUNCTION = 0x51;
/// @dev Reverts with a panic code. Recommended to use with
/// the internal constants with predefined codes.
function panic(uint256 code) internal pure {
assembly ("memory-safe") {
mstore(0x00, 0x4e487b71)
mstore(0x20, code)
revert(0x1c, 0x24)
}
}
}{
"remappings": [
"@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/",
"@poe-nft-contracts/=lib/poe-nft-contracts/src/",
"ds-test/=lib/openzeppelin-contracts/lib/forge-std/lib/ds-test/src/",
"erc4626-tests/=lib/openzeppelin-contracts/lib/erc4626-tests/",
"forge-std/=lib/forge-std/src/",
"halmos-cheatcodes/=lib/openzeppelin-contracts/lib/halmos-cheatcodes/src/",
"openzeppelin-contracts/=lib/openzeppelin-contracts/",
"poe-nft-contracts/=lib/poe-nft-contracts/src/"
],
"optimizer": {
"enabled": true,
"runs": 200
},
"metadata": {
"useLiteralContent": false,
"bytecodeHash": "ipfs",
"appendCBOR": true
},
"outputSelection": {
"*": {
"*": [
"evm.bytecode",
"evm.deployedBytecode",
"devdoc",
"userdoc",
"metadata",
"abi"
]
}
},
"evmVersion": "cancun",
"viaIR": true,
"libraries": {}
}Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
Contract ABI
API[{"inputs":[{"internalType":"contract ERC721Reclaimable","name":"_erc721","type":"address"},{"internalType":"uint256","name":"_payoutAmount","type":"uint256"},{"internalType":"uint256[]","name":"_tokenIds","type":"uint256[]"},{"internalType":"address[]","name":"_answerAddresses","type":"address[]"},{"internalType":"uint256","name":"_endsAt","type":"uint256"},{"internalType":"address","name":"_leftoverRewardsBeneficiary","type":"address"}],"stateMutability":"payable","type":"constructor"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"AlreadyAnswered","type":"error"},{"inputs":[],"name":"LeftoverRewardsTransferFailed","type":"error"},{"inputs":[],"name":"NoRewardsToClaim","type":"error"},{"inputs":[],"name":"NotLeftoverRewardsBeneficiary","type":"error"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"NotTitleOwner","type":"error"},{"inputs":[],"name":"RewardsEnded","type":"error"},{"inputs":[],"name":"RewardsStillClaimable","type":"error"},{"inputs":[{"internalType":"address","name":"recipient","type":"address"}],"name":"TransferFailed","type":"error"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"TokenAnswered","type":"event"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"answered","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"claimLeftoverRewards","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"endsAt","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"erc721","outputs":[{"internalType":"contract ERC721Reclaimable","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"leftoverRewardsBeneficiary","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"nonce","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"payoutAmount","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"uint8","name":"v","type":"uint8"},{"internalType":"bytes32","name":"r","type":"bytes32"},{"internalType":"bytes32","name":"s","type":"bytes32"}],"name":"submitGuess","outputs":[],"stateMutability":"nonpayable","type":"function"}]Contract Creation Code
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Deployed Bytecode
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
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-----Decoded View---------------
Arg [0] : _erc721 (address): 0x7eaDAbAa86B20c7A99c26a14362Ac9cf0F7A5E81
Arg [1] : _payoutAmount (uint256): 740000000000000
Arg [2] : _tokenIds (uint256[]): 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115
Arg [3] : _answerAddresses (address[]): 0xeA3543748fB3a677c9273cB221b25480B661dc41,0x1A3594C86a8d22C7B877210b9ced045d813d95F9,0x27Aee44e21D3aA5b98D4b51220383faa5AD7BbD2,0x41Cbb170bc34a81c1C8273f3BA81A846D3ECF916,0x442e34e0525eBaB9E6E1B876CbD347750984b099,0x9f4504F117D835aB71Df5B27e4Bc587aDabC08da,0x0298dFb0189b24c676FCc0eBbD92C4DC5f0bEF9E,0xa485e10f7B2d2BBcf5102D05c1FEB2d1cACDB4Aa,0x9dc1F8177a3add62BfAB87A9b8C93Cf904C8B994,0x1D39CC8dc775eFac07aA7a4283EDD159C814BEb9,0x87F1D62A17989b8347A88aBFdF92Cc86b7D3dB6e,0x53a97E36B6F0a70DC61d2c1E1c771A8177dcd759,0x1afC89986D85B00Aa5c547389D365528ACb64f7C,0xc0fFE6ef4bE499ABc37Bf609DE89Da7B8b25386e,0xAF9c66760a944103690216180112266FAEC59FfA,0x54E6A93B36490552Dc04f6830CE3F22C8c8017Ee,0x59153E93A232e0965B73D8A9467a4477B5b72F64,0x2eC061b6f5C82dd4dAaA87d202551F481b673a52,0xD39310183683e6445080c2b90FB956434cb2E542,0x7f6A6D03027f10FC6143c5b3f163C045CBA829AA,0xD920112A14996c7560B77FBB50b277e8B8Ca4215,0xfEFa04Bee6F0F7888e0ab0251D07c69Ca175e318,0x9c36506d454CeFaa0763aA02293C352BCDf1924e,0xb3A1A56FCAea1dE626DecC7C54437BC34cFCf486,0xB05493798990a9476e011f30F465a8A33e018036,0x6b77797177557B35A0A215a095Ea14Ea1Bb5023A,0x425f1D1c0AEb079B67669ACa17181E9e7D07efAD,0x50e176f2Aee3200628E0244434cD71e126c2A740,0x6d4B9B257508398ccd6aeF619b1FB9F887D07215,0x80dBed0f9E992855FEd8F755B8D36cfF7AEB929a,0x8DEAf5e3D8dB4c6b4a5C7d2FB15331D70c23CF47,0xb09E70E26A0054679Ba274341C062d0592CfE6A1,0xeAc7A1757C07348895167aA647e700Ba9A40aDc9,0x8a2695dC047b81D3C58016645d15fAd734cEe7B2,0x4178f88d4868255bfC1B2B65F69387F8D44FD11a,0x90E78BbC0aa818f564A3AAcE803934a763860E83,0x60e03C09214015d4E5fE3c50A1bE3FB4766dE9D9,0xfEe632D0dd87374273A9000190eb46601d2dc3c8,0xCE86De564575A08c77CF85925d63C220899C6A0a,0x196223010BAB4dFA0eb82F523206B64988223681,0xec3EFD3BdCcE1eD1BA7278ae74B5f868676c41A1,0xA0396c2Cc0121B7d2022A36DC8cD8DC971cc6f5A,0xA937aF9efa2b1cD423da797739d6e8704D3f7661,0x6Bdc98eF4447da00191bEf50A78430fFe780D1EA,0x2e067Ec53dda1147d29e8Be2697631c5499D72AC,0x78109d77b9e9b8E97C8EDE3A372F02A303723562,0x4cB5207A10De8b6048f9B99219DdB1432333b1c6,0x8E06d23ee01C2109138C07F90e4D80B39a7A1bA0,0xe4D7cBB66484f48F38c15E0472e5084f0081dEE8,0x6C0076A67A3483E255FE13Fcb3cb15F70D6328cE,0x7cfbE364a41b687d13cD29824D3E21d6077463Bc,0x66Dc984585A18636A4AddfAABC7299eF5450Ed35,0x4C8831802766FC8e291cAA49da33654332F8b334,0x10320e7ac80FAe19eE66294040DD25392A54745e,0xc0036cb250B46AFb807ED99a59C6dF192FE8f373,0x0e5c7c9B46ee85fbf18ceb259F601A55Fba5895e,0x5BEbC473D09C451d0a8DB497B62623e6d6909373,0xc2a9Ec36dCc701AF56c6598c861C2A9e568874Ed,0x7597795CD9202575B4A90b4cf12e02f168b664C1,0x50b55990BB1Bc4970b0EE7ac544da2C0C9fEA732,0xE66D3F2Ec7a346E858CDdf8752eaC1A410C6ee00,0x8Ad32E390ce4525abc425bdF9D8cF1Ea3F0DfcA2,0x7f240A1e20Cd7e4107c18c4F86D7c1511Df60fBC,0x89aFf49896Bb012CB03926da6a8973ec0b221CA7,0x119F03512832cf4Fec91889b629461Bf125F6991,0xd199d38c9A3502C7EA470C37b4a98D77ce480E2D,0x815f2Be36b7909FEE5cE1f01836A41Bbcfac672e,0xb44b765D01367CB1f27dde0FfA8b2c195b7d818a,0xE8265aF126b0d63bF8537cAdD122b1c8e3d4AC54,0x5946C9DF7F39d7B4E6ab8a3665E0c65a835b11E4,0xb3DFcED3Bda4B7d5b4CDf6691EEd6e431DF850dc,0x0dBB94a7dE507084E20ECca93A98718a9520f2B3,0x14C2dD2C9087aF923230fA0469c7f1ed2a1610D3,0xE5b5ba237c07acC08A8d322810E5E62F126f55B0,0xbb90980C043Ef6d0fc7bAC98518A9b952CEd233e,0xE8236a1173eFf44c43a5c949EF78e815c2C9A0dF,0x6FbC3883dE521a28882A9B015A00B30DA3d34DC8,0xecC7ab72F21368671c5830099657B31c2e687054,0xDeAA645436523d2Daa599882185BEb93C0cA2De4,0x12f20c0A6423da95Ff8B612CCec77b3139A65C6b,0x42efDbf451566b3e32CD627FF3d8E329f0F770E1,0x8E4C74441CEb2f81CEA29fBC9F1795E94A17a0F4,0x3359954DD1fA2533A9da29B09116B6aa5a67B7c4,0x4Cd7512b8BCA240E0eA3c83157EF6BE79FC0c0eb,0xaB968E0Ff22e07c8D7991731ee69e5262aD248Da,0x60A5F579C1a82540c323f422fa37826177626473,0x19E10611c32929CD3C0bcBABB55e20DD5c68B373,0x534B711632b2Dd990C9dD98e75269Ef17926850C,0x29bb16e4aC86F3e33a594CEC0475928D2c62F7C2,0x40ab26bc5A1d4A8cFb606498C0A28A750FEd1A7a,0x4B49b436d71229F2852999E5642e13dd8F87425B,0x9DC0AF6d92dFEaf671B9242193AB5979a7Aa98C7,0x28B7767668b6dC2c8eD2496a7645E103b434FDC2,0x79D27c16DC5Ee3ac4EB7cFf64b25AA8E2d63A393,0xFABe27AaCB51e13Bf3208927Fda3305DFE045068,0x1938a86b29Bf65CbD99C316Ff0A9aCA4a7955E5a,0xDf857b7aF7967CE2cbC93d18D0D7d89e2E5bDd1e,0x106A235E3D9b7004bba2127f9E4003c86F936b45,0x6BF1a9e3Ad223fDd40df00aC12c93ADa5269Fd21,0xDe7df0985159658F8331Cc2d40c734386CdAFbFe,0xcB0178bd9707aeF0FAb4b28EFA12587Fd774D72B,0xdC7f2D14a674504De626BCdba1B667E93397F521,0x2Fafcb37C8d7e6f43E23B67d4dd8606A023f50D9,0xFED687746255a391a43ECD135904A910c57c3fC7,0x189C9aCFd7300Df39E5C3b56cB625Cb99953D21a,0x590088a7647Aae91B54aaD553C54dbbE5B0a6773,0x8aa27CbB298c272C015637ED88B203a8E85CBd3a,0x1F6F133e665c41d804F6ac4095aD5d3b94319d66,0xc5E451d577531a56f89ef261A034BD8d6cb6796b,0x48C8E6C4EF528BFc3b1026286ba45aADea85102B,0x114a60114a21da2390ccf38Ae2CC5846c30618F8,0xC65E338EAf32a3D287918BaAD1f55503410908D3,0x1E21216112B315D043007F3e17f4d95fe7E7d469,0xa175eB2b53cc5a2b0eEa43002D6b534D054e39fc,0x4e439349230668EaBb754Fa8797Fa57ef90b3d66,0xF3372Ff40087EF87060dceD8aD9dff636D0DF5C9
Arg [4] : _endsAt (uint256): 1753848000
Arg [5] : _leftoverRewardsBeneficiary (address): 0xAe42B13CF992FeB85eEEf0c8B91FDDbFe721C02c
-----Encoded View---------------
240 Constructor Arguments found :
Arg [0] : 0000000000000000000000007eadabaa86b20c7a99c26a14362ac9cf0f7a5e81
Arg [1] : 0000000000000000000000000000000000000000000000000002a106ad224000
Arg [2] : 00000000000000000000000000000000000000000000000000000000000000c0
Arg [3] : 0000000000000000000000000000000000000000000000000000000000000f60
Arg [4] : 00000000000000000000000000000000000000000000000000000000688998c0
Arg [5] : 000000000000000000000000ae42b13cf992feb85eeef0c8b91fddbfe721c02c
Arg [6] : 0000000000000000000000000000000000000000000000000000000000000074
Arg [7] : 0000000000000000000000000000000000000000000000000000000000000000
Arg [8] : 0000000000000000000000000000000000000000000000000000000000000001
Arg [9] : 0000000000000000000000000000000000000000000000000000000000000002
Arg [10] : 0000000000000000000000000000000000000000000000000000000000000003
Arg [11] : 0000000000000000000000000000000000000000000000000000000000000004
Arg [12] : 0000000000000000000000000000000000000000000000000000000000000005
Arg [13] : 0000000000000000000000000000000000000000000000000000000000000006
Arg [14] : 0000000000000000000000000000000000000000000000000000000000000007
Arg [15] : 0000000000000000000000000000000000000000000000000000000000000008
Arg [16] : 0000000000000000000000000000000000000000000000000000000000000009
Arg [17] : 000000000000000000000000000000000000000000000000000000000000000a
Arg [18] : 000000000000000000000000000000000000000000000000000000000000000b
Arg [19] : 000000000000000000000000000000000000000000000000000000000000000c
Arg [20] : 000000000000000000000000000000000000000000000000000000000000000d
Arg [21] : 000000000000000000000000000000000000000000000000000000000000000e
Arg [22] : 000000000000000000000000000000000000000000000000000000000000000f
Arg [23] : 0000000000000000000000000000000000000000000000000000000000000010
Arg [24] : 0000000000000000000000000000000000000000000000000000000000000011
Arg [25] : 0000000000000000000000000000000000000000000000000000000000000012
Arg [26] : 0000000000000000000000000000000000000000000000000000000000000013
Arg [27] : 0000000000000000000000000000000000000000000000000000000000000014
Arg [28] : 0000000000000000000000000000000000000000000000000000000000000015
Arg [29] : 0000000000000000000000000000000000000000000000000000000000000016
Arg [30] : 0000000000000000000000000000000000000000000000000000000000000017
Arg [31] : 0000000000000000000000000000000000000000000000000000000000000018
Arg [32] : 0000000000000000000000000000000000000000000000000000000000000019
Arg [33] : 000000000000000000000000000000000000000000000000000000000000001a
Arg [34] : 000000000000000000000000000000000000000000000000000000000000001b
Arg [35] : 000000000000000000000000000000000000000000000000000000000000001c
Arg [36] : 000000000000000000000000000000000000000000000000000000000000001d
Arg [37] : 000000000000000000000000000000000000000000000000000000000000001e
Arg [38] : 000000000000000000000000000000000000000000000000000000000000001f
Arg [39] : 0000000000000000000000000000000000000000000000000000000000000020
Arg [40] : 0000000000000000000000000000000000000000000000000000000000000021
Arg [41] : 0000000000000000000000000000000000000000000000000000000000000022
Arg [42] : 0000000000000000000000000000000000000000000000000000000000000023
Arg [43] : 0000000000000000000000000000000000000000000000000000000000000024
Arg [44] : 0000000000000000000000000000000000000000000000000000000000000025
Arg [45] : 0000000000000000000000000000000000000000000000000000000000000026
Arg [46] : 0000000000000000000000000000000000000000000000000000000000000027
Arg [47] : 0000000000000000000000000000000000000000000000000000000000000028
Arg [48] : 0000000000000000000000000000000000000000000000000000000000000029
Arg [49] : 000000000000000000000000000000000000000000000000000000000000002a
Arg [50] : 000000000000000000000000000000000000000000000000000000000000002b
Arg [51] : 000000000000000000000000000000000000000000000000000000000000002c
Arg [52] : 000000000000000000000000000000000000000000000000000000000000002d
Arg [53] : 000000000000000000000000000000000000000000000000000000000000002e
Arg [54] : 000000000000000000000000000000000000000000000000000000000000002f
Arg [55] : 0000000000000000000000000000000000000000000000000000000000000030
Arg [56] : 0000000000000000000000000000000000000000000000000000000000000031
Arg [57] : 0000000000000000000000000000000000000000000000000000000000000032
Arg [58] : 0000000000000000000000000000000000000000000000000000000000000033
Arg [59] : 0000000000000000000000000000000000000000000000000000000000000034
Arg [60] : 0000000000000000000000000000000000000000000000000000000000000035
Arg [61] : 0000000000000000000000000000000000000000000000000000000000000036
Arg [62] : 0000000000000000000000000000000000000000000000000000000000000037
Arg [63] : 0000000000000000000000000000000000000000000000000000000000000038
Arg [64] : 0000000000000000000000000000000000000000000000000000000000000039
Arg [65] : 000000000000000000000000000000000000000000000000000000000000003a
Arg [66] : 000000000000000000000000000000000000000000000000000000000000003b
Arg [67] : 000000000000000000000000000000000000000000000000000000000000003c
Arg [68] : 000000000000000000000000000000000000000000000000000000000000003d
Arg [69] : 000000000000000000000000000000000000000000000000000000000000003e
Arg [70] : 000000000000000000000000000000000000000000000000000000000000003f
Arg [71] : 0000000000000000000000000000000000000000000000000000000000000040
Arg [72] : 0000000000000000000000000000000000000000000000000000000000000041
Arg [73] : 0000000000000000000000000000000000000000000000000000000000000042
Arg [74] : 0000000000000000000000000000000000000000000000000000000000000043
Arg [75] : 0000000000000000000000000000000000000000000000000000000000000044
Arg [76] : 0000000000000000000000000000000000000000000000000000000000000045
Arg [77] : 0000000000000000000000000000000000000000000000000000000000000046
Arg [78] : 0000000000000000000000000000000000000000000000000000000000000047
Arg [79] : 0000000000000000000000000000000000000000000000000000000000000048
Arg [80] : 0000000000000000000000000000000000000000000000000000000000000049
Arg [81] : 000000000000000000000000000000000000000000000000000000000000004a
Arg [82] : 000000000000000000000000000000000000000000000000000000000000004b
Arg [83] : 000000000000000000000000000000000000000000000000000000000000004c
Arg [84] : 000000000000000000000000000000000000000000000000000000000000004d
Arg [85] : 000000000000000000000000000000000000000000000000000000000000004e
Arg [86] : 000000000000000000000000000000000000000000000000000000000000004f
Arg [87] : 0000000000000000000000000000000000000000000000000000000000000050
Arg [88] : 0000000000000000000000000000000000000000000000000000000000000051
Arg [89] : 0000000000000000000000000000000000000000000000000000000000000052
Arg [90] : 0000000000000000000000000000000000000000000000000000000000000053
Arg [91] : 0000000000000000000000000000000000000000000000000000000000000054
Arg [92] : 0000000000000000000000000000000000000000000000000000000000000055
Arg [93] : 0000000000000000000000000000000000000000000000000000000000000056
Arg [94] : 0000000000000000000000000000000000000000000000000000000000000057
Arg [95] : 0000000000000000000000000000000000000000000000000000000000000058
Arg [96] : 0000000000000000000000000000000000000000000000000000000000000059
Arg [97] : 000000000000000000000000000000000000000000000000000000000000005a
Arg [98] : 000000000000000000000000000000000000000000000000000000000000005b
Arg [99] : 000000000000000000000000000000000000000000000000000000000000005c
Arg [100] : 000000000000000000000000000000000000000000000000000000000000005d
Arg [101] : 000000000000000000000000000000000000000000000000000000000000005e
Arg [102] : 000000000000000000000000000000000000000000000000000000000000005f
Arg [103] : 0000000000000000000000000000000000000000000000000000000000000060
Arg [104] : 0000000000000000000000000000000000000000000000000000000000000061
Arg [105] : 0000000000000000000000000000000000000000000000000000000000000062
Arg [106] : 0000000000000000000000000000000000000000000000000000000000000063
Arg [107] : 0000000000000000000000000000000000000000000000000000000000000064
Arg [108] : 0000000000000000000000000000000000000000000000000000000000000065
Arg [109] : 0000000000000000000000000000000000000000000000000000000000000066
Arg [110] : 0000000000000000000000000000000000000000000000000000000000000067
Arg [111] : 0000000000000000000000000000000000000000000000000000000000000068
Arg [112] : 0000000000000000000000000000000000000000000000000000000000000069
Arg [113] : 000000000000000000000000000000000000000000000000000000000000006a
Arg [114] : 000000000000000000000000000000000000000000000000000000000000006b
Arg [115] : 000000000000000000000000000000000000000000000000000000000000006c
Arg [116] : 000000000000000000000000000000000000000000000000000000000000006d
Arg [117] : 000000000000000000000000000000000000000000000000000000000000006e
Arg [118] : 000000000000000000000000000000000000000000000000000000000000006f
Arg [119] : 0000000000000000000000000000000000000000000000000000000000000070
Arg [120] : 0000000000000000000000000000000000000000000000000000000000000071
Arg [121] : 0000000000000000000000000000000000000000000000000000000000000072
Arg [122] : 0000000000000000000000000000000000000000000000000000000000000073
Arg [123] : 0000000000000000000000000000000000000000000000000000000000000074
Arg [124] : 000000000000000000000000ea3543748fb3a677c9273cb221b25480b661dc41
Arg [125] : 0000000000000000000000001a3594c86a8d22c7b877210b9ced045d813d95f9
Arg [126] : 00000000000000000000000027aee44e21d3aa5b98d4b51220383faa5ad7bbd2
Arg [127] : 00000000000000000000000041cbb170bc34a81c1c8273f3ba81a846d3ecf916
Arg [128] : 000000000000000000000000442e34e0525ebab9e6e1b876cbd347750984b099
Arg [129] : 0000000000000000000000009f4504f117d835ab71df5b27e4bc587adabc08da
Arg [130] : 0000000000000000000000000298dfb0189b24c676fcc0ebbd92c4dc5f0bef9e
Arg [131] : 000000000000000000000000a485e10f7b2d2bbcf5102d05c1feb2d1cacdb4aa
Arg [132] : 0000000000000000000000009dc1f8177a3add62bfab87a9b8c93cf904c8b994
Arg [133] : 0000000000000000000000001d39cc8dc775efac07aa7a4283edd159c814beb9
Arg [134] : 00000000000000000000000087f1d62a17989b8347a88abfdf92cc86b7d3db6e
Arg [135] : 00000000000000000000000053a97e36b6f0a70dc61d2c1e1c771a8177dcd759
Arg [136] : 0000000000000000000000001afc89986d85b00aa5c547389d365528acb64f7c
Arg [137] : 000000000000000000000000c0ffe6ef4be499abc37bf609de89da7b8b25386e
Arg [138] : 000000000000000000000000af9c66760a944103690216180112266faec59ffa
Arg [139] : 00000000000000000000000054e6a93b36490552dc04f6830ce3f22c8c8017ee
Arg [140] : 00000000000000000000000059153e93a232e0965b73d8a9467a4477b5b72f64
Arg [141] : 0000000000000000000000002ec061b6f5c82dd4daaa87d202551f481b673a52
Arg [142] : 000000000000000000000000d39310183683e6445080c2b90fb956434cb2e542
Arg [143] : 0000000000000000000000007f6a6d03027f10fc6143c5b3f163c045cba829aa
Arg [144] : 000000000000000000000000d920112a14996c7560b77fbb50b277e8b8ca4215
Arg [145] : 000000000000000000000000fefa04bee6f0f7888e0ab0251d07c69ca175e318
Arg [146] : 0000000000000000000000009c36506d454cefaa0763aa02293c352bcdf1924e
Arg [147] : 000000000000000000000000b3a1a56fcaea1de626decc7c54437bc34cfcf486
Arg [148] : 000000000000000000000000b05493798990a9476e011f30f465a8a33e018036
Arg [149] : 0000000000000000000000006b77797177557b35a0a215a095ea14ea1bb5023a
Arg [150] : 000000000000000000000000425f1d1c0aeb079b67669aca17181e9e7d07efad
Arg [151] : 00000000000000000000000050e176f2aee3200628e0244434cd71e126c2a740
Arg [152] : 0000000000000000000000006d4b9b257508398ccd6aef619b1fb9f887d07215
Arg [153] : 00000000000000000000000080dbed0f9e992855fed8f755b8d36cff7aeb929a
Arg [154] : 0000000000000000000000008deaf5e3d8db4c6b4a5c7d2fb15331d70c23cf47
Arg [155] : 000000000000000000000000b09e70e26a0054679ba274341c062d0592cfe6a1
Arg [156] : 000000000000000000000000eac7a1757c07348895167aa647e700ba9a40adc9
Arg [157] : 0000000000000000000000008a2695dc047b81d3c58016645d15fad734cee7b2
Arg [158] : 0000000000000000000000004178f88d4868255bfc1b2b65f69387f8d44fd11a
Arg [159] : 00000000000000000000000090e78bbc0aa818f564a3aace803934a763860e83
Arg [160] : 00000000000000000000000060e03c09214015d4e5fe3c50a1be3fb4766de9d9
Arg [161] : 000000000000000000000000fee632d0dd87374273a9000190eb46601d2dc3c8
Arg [162] : 000000000000000000000000ce86de564575a08c77cf85925d63c220899c6a0a
Arg [163] : 000000000000000000000000196223010bab4dfa0eb82f523206b64988223681
Arg [164] : 000000000000000000000000ec3efd3bdcce1ed1ba7278ae74b5f868676c41a1
Arg [165] : 000000000000000000000000a0396c2cc0121b7d2022a36dc8cd8dc971cc6f5a
Arg [166] : 000000000000000000000000a937af9efa2b1cd423da797739d6e8704d3f7661
Arg [167] : 0000000000000000000000006bdc98ef4447da00191bef50a78430ffe780d1ea
Arg [168] : 0000000000000000000000002e067ec53dda1147d29e8be2697631c5499d72ac
Arg [169] : 00000000000000000000000078109d77b9e9b8e97c8ede3a372f02a303723562
Arg [170] : 0000000000000000000000004cb5207a10de8b6048f9b99219ddb1432333b1c6
Arg [171] : 0000000000000000000000008e06d23ee01c2109138c07f90e4d80b39a7a1ba0
Arg [172] : 000000000000000000000000e4d7cbb66484f48f38c15e0472e5084f0081dee8
Arg [173] : 0000000000000000000000006c0076a67a3483e255fe13fcb3cb15f70d6328ce
Arg [174] : 0000000000000000000000007cfbe364a41b687d13cd29824d3e21d6077463bc
Arg [175] : 00000000000000000000000066dc984585a18636a4addfaabc7299ef5450ed35
Arg [176] : 0000000000000000000000004c8831802766fc8e291caa49da33654332f8b334
Arg [177] : 00000000000000000000000010320e7ac80fae19ee66294040dd25392a54745e
Arg [178] : 000000000000000000000000c0036cb250b46afb807ed99a59c6df192fe8f373
Arg [179] : 0000000000000000000000000e5c7c9b46ee85fbf18ceb259f601a55fba5895e
Arg [180] : 0000000000000000000000005bebc473d09c451d0a8db497b62623e6d6909373
Arg [181] : 000000000000000000000000c2a9ec36dcc701af56c6598c861c2a9e568874ed
Arg [182] : 0000000000000000000000007597795cd9202575b4a90b4cf12e02f168b664c1
Arg [183] : 00000000000000000000000050b55990bb1bc4970b0ee7ac544da2c0c9fea732
Arg [184] : 000000000000000000000000e66d3f2ec7a346e858cddf8752eac1a410c6ee00
Arg [185] : 0000000000000000000000008ad32e390ce4525abc425bdf9d8cf1ea3f0dfca2
Arg [186] : 0000000000000000000000007f240a1e20cd7e4107c18c4f86d7c1511df60fbc
Arg [187] : 00000000000000000000000089aff49896bb012cb03926da6a8973ec0b221ca7
Arg [188] : 000000000000000000000000119f03512832cf4fec91889b629461bf125f6991
Arg [189] : 000000000000000000000000d199d38c9a3502c7ea470c37b4a98d77ce480e2d
Arg [190] : 000000000000000000000000815f2be36b7909fee5ce1f01836a41bbcfac672e
Arg [191] : 000000000000000000000000b44b765d01367cb1f27dde0ffa8b2c195b7d818a
Arg [192] : 000000000000000000000000e8265af126b0d63bf8537cadd122b1c8e3d4ac54
Arg [193] : 0000000000000000000000005946c9df7f39d7b4e6ab8a3665e0c65a835b11e4
Arg [194] : 000000000000000000000000b3dfced3bda4b7d5b4cdf6691eed6e431df850dc
Arg [195] : 0000000000000000000000000dbb94a7de507084e20ecca93a98718a9520f2b3
Arg [196] : 00000000000000000000000014c2dd2c9087af923230fa0469c7f1ed2a1610d3
Arg [197] : 000000000000000000000000e5b5ba237c07acc08a8d322810e5e62f126f55b0
Arg [198] : 000000000000000000000000bb90980c043ef6d0fc7bac98518a9b952ced233e
Arg [199] : 000000000000000000000000e8236a1173eff44c43a5c949ef78e815c2c9a0df
Arg [200] : 0000000000000000000000006fbc3883de521a28882a9b015a00b30da3d34dc8
Arg [201] : 000000000000000000000000ecc7ab72f21368671c5830099657b31c2e687054
Arg [202] : 000000000000000000000000deaa645436523d2daa599882185beb93c0ca2de4
Arg [203] : 00000000000000000000000012f20c0a6423da95ff8b612ccec77b3139a65c6b
Arg [204] : 00000000000000000000000042efdbf451566b3e32cd627ff3d8e329f0f770e1
Arg [205] : 0000000000000000000000008e4c74441ceb2f81cea29fbc9f1795e94a17a0f4
Arg [206] : 0000000000000000000000003359954dd1fa2533a9da29b09116b6aa5a67b7c4
Arg [207] : 0000000000000000000000004cd7512b8bca240e0ea3c83157ef6be79fc0c0eb
Arg [208] : 000000000000000000000000ab968e0ff22e07c8d7991731ee69e5262ad248da
Arg [209] : 00000000000000000000000060a5f579c1a82540c323f422fa37826177626473
Arg [210] : 00000000000000000000000019e10611c32929cd3c0bcbabb55e20dd5c68b373
Arg [211] : 000000000000000000000000534b711632b2dd990c9dd98e75269ef17926850c
Arg [212] : 00000000000000000000000029bb16e4ac86f3e33a594cec0475928d2c62f7c2
Arg [213] : 00000000000000000000000040ab26bc5a1d4a8cfb606498c0a28a750fed1a7a
Arg [214] : 0000000000000000000000004b49b436d71229f2852999e5642e13dd8f87425b
Arg [215] : 0000000000000000000000009dc0af6d92dfeaf671b9242193ab5979a7aa98c7
Arg [216] : 00000000000000000000000028b7767668b6dc2c8ed2496a7645e103b434fdc2
Arg [217] : 00000000000000000000000079d27c16dc5ee3ac4eb7cff64b25aa8e2d63a393
Arg [218] : 000000000000000000000000fabe27aacb51e13bf3208927fda3305dfe045068
Arg [219] : 0000000000000000000000001938a86b29bf65cbd99c316ff0a9aca4a7955e5a
Arg [220] : 000000000000000000000000df857b7af7967ce2cbc93d18d0d7d89e2e5bdd1e
Arg [221] : 000000000000000000000000106a235e3d9b7004bba2127f9e4003c86f936b45
Arg [222] : 0000000000000000000000006bf1a9e3ad223fdd40df00ac12c93ada5269fd21
Arg [223] : 000000000000000000000000de7df0985159658f8331cc2d40c734386cdafbfe
Arg [224] : 000000000000000000000000cb0178bd9707aef0fab4b28efa12587fd774d72b
Arg [225] : 000000000000000000000000dc7f2d14a674504de626bcdba1b667e93397f521
Arg [226] : 0000000000000000000000002fafcb37c8d7e6f43e23b67d4dd8606a023f50d9
Arg [227] : 000000000000000000000000fed687746255a391a43ecd135904a910c57c3fc7
Arg [228] : 000000000000000000000000189c9acfd7300df39e5c3b56cb625cb99953d21a
Arg [229] : 000000000000000000000000590088a7647aae91b54aad553c54dbbe5b0a6773
Arg [230] : 0000000000000000000000008aa27cbb298c272c015637ed88b203a8e85cbd3a
Arg [231] : 0000000000000000000000001f6f133e665c41d804f6ac4095ad5d3b94319d66
Arg [232] : 000000000000000000000000c5e451d577531a56f89ef261a034bd8d6cb6796b
Arg [233] : 00000000000000000000000048c8e6c4ef528bfc3b1026286ba45aadea85102b
Arg [234] : 000000000000000000000000114a60114a21da2390ccf38ae2cc5846c30618f8
Arg [235] : 000000000000000000000000c65e338eaf32a3d287918baad1f55503410908d3
Arg [236] : 0000000000000000000000001e21216112b315d043007f3e17f4d95fe7e7d469
Arg [237] : 000000000000000000000000a175eb2b53cc5a2b0eea43002d6b534d054e39fc
Arg [238] : 0000000000000000000000004e439349230668eabb754fa8797fa57ef90b3d66
Arg [239] : 000000000000000000000000f3372ff40087ef87060dced8ad9dff636d0df5c9
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Net Worth in USD
$272.07
Net Worth in ETH
0.0814
Token Allocations
ETH
100.00%
Multichain Portfolio | 35 Chains
| Chain | Token | Portfolio % | Price | Amount | Value |
|---|---|---|---|---|---|
| BASE | 100.00% | $3,342.37 | 0.0814 | $272.07 |
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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.