FTM Price: $1.01 (+0.29%)
Gas: 113 GWei

Contract

0xF51F7a532a2AaDFE8E2320bf5BA8275503bB3789
 

Overview

FTM Balance

Fantom LogoFantom LogoFantom Logo0 FTM

FTM Value

$0.00

Sponsored

Transaction Hash
Method
Block
From
To
Value
Change Brand514044582022-11-24 23:13:53489 days ago1669331633IN
0xF51F7a53...503bB3789
0 FTM0.0037003470
0x60806040513951092022-11-24 15:34:48490 days ago1669304088IN
 Create: FlexiPunkMetadata
0 FTM0.0636258770

Latest 1 internal transaction

Parent Txn Hash Block From To Value
513951092022-11-24 15:34:48490 days ago1669304088  Contract Creation0 FTM
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Contract Source Code Verified (Exact Match)

Contract Name:
FlexiPunkMetadata

Compiler Version
v0.8.4+commit.c7e474f2

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion

Contract Source Code (Solidity Standard Json-Input format)

File 1 of 4 : FlexiPunkMetadata.sol
// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity ^0.8.4;

import "base64-sol/base64.sol";
import "@openzeppelin/contracts/access/Ownable.sol";

/// @title Punk Domains TLD Metadata contract (Flexi)
/// @author Tempe Techie
/// @notice Contract that stores metadata for TLD contracts.
contract FlexiPunkMetadata {
  mapping (address => string) public descriptions; // TLD-specific descriptions, mapping(tldAddress => description)
  mapping (address => string) public brands; // TLD-specific brand names, mapping(tldAddress => brandName)

  // EVENTS
  event BrandChanged(address indexed user, string brand);
  event DescriptionChanged(address indexed user, string description);

  // READ
  function getMetadata(string calldata _domainName, string calldata _tld, uint256 _tokenId) public view returns(string memory) {
    string memory fullDomainName = string(abi.encodePacked(_domainName, _tld));

    return string(
      abi.encodePacked("data:application/json;base64,", Base64.encode(bytes(abi.encodePacked(
        '{"name": "', fullDomainName, '", ',
        '"description": "', descriptions[msg.sender], '", ',
        '"image": "', _getImage(fullDomainName, brands[msg.sender]), '"}'))))
    );
  }

  function _getImage(string memory _fullDomainName, string memory _brandName) internal pure returns (string memory) {
    string memory svgBase64Encoded = Base64.encode(bytes(string(abi.encodePacked(
      '<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 500 500" width="500" height="500">',
        '<defs><linearGradient id="grad" x1="0%" y1="0%" x2="100%" y2="0%">',
        '<stop offset="0%" style="stop-color:rgb(68,67,241);stop-opacity:1" />',
        '<stop offset="100%" style="stop-color:rgb(144,85,247);stop-opacity:1" /></linearGradient></defs>',
        '<rect x="0" y="0" width="500" height="500" fill="url(#grad)"/>',
        '<text x="50%" y="50%" dominant-baseline="middle" fill="white" text-anchor="middle" font-size="x-large">',
        _fullDomainName,'</text><text x="50%" y="70%" dominant-baseline="middle" fill="white" text-anchor="middle">',
        _brandName,'</text>',
      '</svg>'
    ))));

    return string(abi.encodePacked("data:image/svg+xml;base64,", svgBase64Encoded));
  }

  function getTldOwner(address _tldAddress) public view returns(address) {
    Ownable tld = Ownable(_tldAddress);
    return tld.owner();
  }

  // WRITE (TLD OWNERS)

  /// @notice Only TLD contract owner can call this function.
  function changeBrand(address _tldAddress, string calldata _brand) external {
    require(msg.sender == getTldOwner(_tldAddress), "Sender not TLD owner");
    brands[_tldAddress] = _brand;
    emit BrandChanged(msg.sender, _brand);
  }

  /// @notice Only TLD contract owner can call this function.
  function changeDescription(address _tldAddress, string calldata _description) external {
    require(msg.sender == getTldOwner(_tldAddress), "Sender not TLD owner");
    descriptions[_tldAddress] = _description;
    emit DescriptionChanged(msg.sender, _description);
  }
}

File 2 of 4 : base64.sol
// SPDX-License-Identifier: MIT

/// @title Base64
/// @author Brecht Devos - <[email protected]>
/// @notice Provides a function for encoding some bytes in base64
library Base64 {
    string internal constant TABLE = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';

    function encode(bytes memory data) internal pure returns (string memory) {
        if (data.length == 0) return '';
        
        // load the table into memory
        string memory table = TABLE;

        // multiply by 4/3 rounded up
        uint256 encodedLen = 4 * ((data.length + 2) / 3);

        // add some extra buffer at the end required for the writing
        string memory result = new string(encodedLen + 32);

        assembly {
            // set the actual output length
            mstore(result, encodedLen)
            
            // prepare the lookup table
            let tablePtr := add(table, 1)
            
            // input ptr
            let dataPtr := data
            let endPtr := add(dataPtr, mload(data))
            
            // result ptr, jump over length
            let resultPtr := add(result, 32)
            
            // run over the input, 3 bytes at a time
            for {} lt(dataPtr, endPtr) {}
            {
               dataPtr := add(dataPtr, 3)
               
               // read 3 bytes
               let input := mload(dataPtr)
               
               // write 4 characters
               mstore(resultPtr, shl(248, mload(add(tablePtr, and(shr(18, input), 0x3F)))))
               resultPtr := add(resultPtr, 1)
               mstore(resultPtr, shl(248, mload(add(tablePtr, and(shr(12, input), 0x3F)))))
               resultPtr := add(resultPtr, 1)
               mstore(resultPtr, shl(248, mload(add(tablePtr, and(shr( 6, input), 0x3F)))))
               resultPtr := add(resultPtr, 1)
               mstore(resultPtr, shl(248, mload(add(tablePtr, and(        input,  0x3F)))))
               resultPtr := add(resultPtr, 1)
            }
            
            // padding with '='
            switch mod(mload(data), 3)
            case 1 { mstore(sub(resultPtr, 2), shl(240, 0x3d3d)) }
            case 2 { mstore(sub(resultPtr, 1), shl(248, 0x3d)) }
        }
        
        return result;
    }
}

File 3 of 4 : Ownable.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (access/Ownable.sol)

pragma solidity ^0.8.0;

import "../utils/Context.sol";

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        _transferOwnership(_msgSender());
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
        _;
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

File 4 of 4 : Context.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

pragma solidity ^0.8.0;

/**
 * @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;
    }
}

Settings
{
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

Contract Security Audit

Contract ABI

[{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"string","name":"brand","type":"string"}],"name":"BrandChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"string","name":"description","type":"string"}],"name":"DescriptionChanged","type":"event"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"brands","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_tldAddress","type":"address"},{"internalType":"string","name":"_brand","type":"string"}],"name":"changeBrand","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_tldAddress","type":"address"},{"internalType":"string","name":"_description","type":"string"}],"name":"changeDescription","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"descriptions","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"string","name":"_domainName","type":"string"},{"internalType":"string","name":"_tld","type":"string"},{"internalType":"uint256","name":"_tokenId","type":"uint256"}],"name":"getMetadata","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_tldAddress","type":"address"}],"name":"getTldOwner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"}]

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Deployed Bytecode

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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.