Contract

0x6754E97b8eaeC13Fa24480E9d1240176Dd0f2911

Source Code

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ContractCreator

0x15AeD2C7...1F8eE812b at txn 0xa273591b3838004e71e56c41361cc8220c692c08f544151c44d5ab10ecfb5166

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Parent Transaction Hash	Block		From		To
0xa273591b3838004e71e56c41361cc8220c692c08f544151c44d5ab10ecfb5166	10786169	2024-02-19 16:54:45	428 days ago	1708361685	0x4e59b448...6c0B4956C		Contract Creation	0 ETH$0.00

Contract Source Code Verified (Exact Match)

Contract Name:

PseudoRandomizer

Compiler Version

v0.8.23+commit.f704f362

Optimization Enabled:

Yes with 2 runs

Other Settings:

paris EvmVersion

Contract Source Code (Solidity Standard Json-Input format)

IDE

File 1 of 4 : PseudoRandomizer.sol

// SPDX-License-Identifier: MIT
pragma solidity 0.8.23;

import {IPseudoRandomizer} from "src/interfaces/IPseudoRandomizer.sol";
import {ISeedConsumer} from "src/interfaces/ISeedConsumer.sol";

/**
 * @title PseudoRandomizer
 * @author fx(hash)
 * @dev See the documentation in {IPseudoRandomizer}
 */
contract PseudoRandomizer is IPseudoRandomizer {
    /*//////////////////////////////////////////////////////////////////////////
                                EXTERNAL FUNCTIONS
    //////////////////////////////////////////////////////////////////////////*/

    /**
     * @inheritdoc IPseudoRandomizer
     */
    function requestRandomness(uint256 _tokenId) external {
        bytes32 seed = generateSeed(_tokenId);
        ISeedConsumer(msg.sender).fulfillSeedRequest(_tokenId, seed);
    }

    /*//////////////////////////////////////////////////////////////////////////
                                PUBLIC FUNCTIONS
    //////////////////////////////////////////////////////////////////////////*/

    /**
     * @inheritdoc IPseudoRandomizer
     */
    function generateSeed(uint256 _tokenId) public view returns (bytes32) {
        return keccak256(abi.encodePacked(_tokenId, msg.sender, block.number, blockhash(block.number - 1)));
    }
}

File 2 of 4 : IPseudoRandomizer.sol

// SPDX-License-Identifier: MIT
pragma solidity 0.8.23;

import {IRandomizer} from "src/interfaces/IRandomizer.sol";

/**
 * @title IPseudoRandomizer
 * @author fx(hash)
 * @notice Randomizer for generating psuedorandom seeds for newly minted tokens
 */
interface IPseudoRandomizer is IRandomizer {
    /*//////////////////////////////////////////////////////////////////////////
                                  FUNCTIONS
    //////////////////////////////////////////////////////////////////////////*/

    /**
     * @notice Generates random seed for token using entropy
     * @param _tokenId ID of the token
     * @return Hash of the seed
     */
    function generateSeed(uint256 _tokenId) external view returns (bytes32);

    /**
     * @inheritdoc IRandomizer
     */
    function requestRandomness(uint256 _tokenId) external;
}

File 3 of 4 : ISeedConsumer.sol

// SPDX-License-Identifier: MIT
pragma solidity 0.8.23;

/**
 * @title ISeedConsumer
 * @author fx(hash)
 * @notice Interface for randomizers to interact with FxGenArt721 tokens
 */
interface ISeedConsumer {
    /*//////////////////////////////////////////////////////////////////////////
                                  EVENTS
    //////////////////////////////////////////////////////////////////////////*/

    /**
     * @notice Event emitted when a seed request is fulfilled for a specific token
     * @param _randomizer Address of the randomizer contract
     * @param _tokenId ID of the token
     * @param _seed Hash of the random seed
     */
    event SeedFulfilled(address indexed _randomizer, uint256 indexed _tokenId, bytes32 _seed);

    /*//////////////////////////////////////////////////////////////////////////
                                  FUNCTIONS
    //////////////////////////////////////////////////////////////////////////*/

    /**
     * @notice Fullfills the random seed request on the FxGenArt721 token contract
     * @param _tokenId ID of the token
     * @param _seed Hash of the random seed
     */
    function fulfillSeedRequest(uint256 _tokenId, bytes32 _seed) external;
}

File 4 of 4 : IRandomizer.sol

// SPDX-License-Identifier: MIT
pragma solidity 0.8.23;

/**
 * @title IRandomizer
 * @author fx(hash)
 * @notice Interface for FxGenArt721 tokens to interact with randomizers
 */
interface IRandomizer {
    /*//////////////////////////////////////////////////////////////////////////
                                  FUNCTIONS
    //////////////////////////////////////////////////////////////////////////*/

    /**
     * @notice Requests random seed for a given token
     * @param _tokenId ID of the token
     */
    function requestRandomness(uint256 _tokenId) external;
}

Settings

{
  "remappings": [
    "openzeppelin/=lib/openzeppelin-contracts/",
    "openzeppelin-upgradeable/=lib/openzeppelin-contracts-upgradeable/",
    "forge-std/=lib/forge-std/src/",
    "scripty.sol/=lib/scripty.sol/",
    "solady/=lib/solady/",
    "solmate/=lib/solmate/",
    "sstore2/=lib/sstore2/",
    "ds-test/=lib/forge-std/lib/ds-test/src/",
    "erc4626-tests/=lib/openzeppelin-contracts-upgradeable/lib/erc4626-tests/",
    "openzeppelin-contracts-upgradeable/=lib/openzeppelin-contracts-upgradeable/",
    "openzeppelin-contracts/=lib/openzeppelin-contracts/"
  ],
  "optimizer": {
    "enabled": true,
    "runs": 2
  },
  "metadata": {
    "useLiteralContent": false,
    "bytecodeHash": "ipfs",
    "appendCBOR": true
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "evmVersion": "paris",
  "libraries": {}
}

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Contract ABI

API

[{"inputs":[{"internalType":"uint256","name":"_tokenId","type":"uint256"}],"name":"generateSeed","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_tokenId","type":"uint256"}],"name":"requestRandomness","outputs":[],"stateMutability":"nonpayable","type":"function"}]

Contract Creation Code

Decompile Bytecode Switch to Opcodes View

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Deployed Bytecode

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