Contract 0x2C57DC747C0Af6550D6429EE6c10BeFCF119Fb03

Txn Hash Method
Block
From
To
Value [Txn Fee]
0xcc826bdd23427740dbc04ca882f926e3b515d7ce3f930e93222744abc78132f1Certify180989042023-03-07 4:17:5420 days 17 hrs ago0x897b1422f6cac687a1eb09ae0d02185f5ff62560 IN  0x2c57dc747c0af6550d6429ee6c10befcf119fb031 CELO0.00672395
0x467c17e4b46dd30a0de7dc138762116cb19b9cf34c7dccc2ad6024cc492bd008Certify180979232023-03-07 2:56:0920 days 19 hrs ago0xbd82a7f6368de87159a140feafe49cb04a784269 IN  0x2c57dc747c0af6550d6429ee6c10befcf119fb031 CELO0.001630758
0x2acdc6a3fd1bcc971ca016b94fe31ce04eb3dd140ba774bd8401fa6a20651f750x60806040180971452023-03-07 1:51:1920 days 20 hrs ago0xbd82a7f6368de87159a140feafe49cb04a784269 IN  Create: CertiBits0 CELO0.025789475
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Latest 2 internal transactions
Parent Txn Hash Block From To Value
0xcc826bdd23427740dbc04ca882f926e3b515d7ce3f930e93222744abc78132f1180989042023-03-07 4:17:5420 days 17 hrs ago 0x2c57dc747c0af6550d6429ee6c10befcf119fb030xbd82a7f6368de87159a140feafe49cb04a7842691 CELO
0x467c17e4b46dd30a0de7dc138762116cb19b9cf34c7dccc2ad6024cc492bd008180979232023-03-07 2:56:0920 days 19 hrs ago 0x2c57dc747c0af6550d6429ee6c10befcf119fb030xbd82a7f6368de87159a140feafe49cb04a7842691 CELO
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Contract Source Code Verified (Exact Match)

Contract Name:
CertiBits

Compiler Version
v0.8.18+commit.87f61d96

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion

Contract Source Code (Solidity Standard Json-Input format)

File 1 of 3 : Ownable.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (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 Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        _checkOwner();
        _;
    }

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

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        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 2 of 3 : 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;
    }
}

File 3 of 3 : CertiBits.sol
// SPDX-License-Identifier: MIT
pragma solidity >=0.7.0 <0.9.0;

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

 interface IERC20Votes {

    function mint(address to, uint256 amount) external;

 }
    contract CertiBits is Ownable {
    
    IERC20Votes TokenBits;
    uint public totalCertiBits;
    uint256 public bonusReward; //Amount of Tokens for reward

    

    struct signature{

        address signer;
        string sign_data;
    }

    mapping (string => signature[]) hash2SignaturesList;
    mapping (address => string[]) address2SignaturesList;
    mapping (address => mapping(string => bool)) address2hashstate;
    mapping (address => uint) pubkey2IDu;
    mapping (address => bool) public address2state;
    mapping (address => uint) signatures;

    event newRewardValue(uint256 _rewardAmount);
    

    constructor (IERC20Votes _TokenBitsAddress, uint256 _bonusReward) {
        TokenBits = _TokenBitsAddress;
        bonusReward = _bonusReward;
    }

    function changeTokenAddress(IERC20Votes _newTokenBits) public onlyOwner {
        TokenBits = _newTokenBits;
    }


    function setReward (uint256 _rewardAmount) public onlyOwner {
        bonusReward = _rewardAmount;
        emit newRewardValue(_rewardAmount);
    }



    function Certify(string memory _hash, string memory _data) payable public {
        require(!address2hashstate[msg.sender][_hash],"Address already signed these hash");
        require(msg.value>=1 ether, "min payment for certi is 1 Celo");
        payable(owner()).transfer(msg.value);
        address2hashstate[msg.sender][_hash]=true;
        hash2SignaturesList[_hash].push(signature(msg.sender, _data));
        address2SignaturesList[_msgSender()].push(_hash);
        totalCertiBits++;
        TokenBits.mint(msg.sender,bonusReward);
        }

    
    function validateHash(string memory _hash) public view returns(signature[] memory) {
        return (hash2SignaturesList[_hash]);
    }
    function mySignatures() public view returns(string[] memory) {
        return (address2SignaturesList[_msgSender()]);
    }
    function validateSingleHash(string memory _hash, uint _i) public view returns(address, string memory) {
        return (hash2SignaturesList[_hash][_i].signer,hash2SignaturesList[_hash][_i].sign_data);
    }
    function mySingleSignature(uint _i) public view returns(string memory) {
        return (address2SignaturesList[_msgSender()][_i]);
    }
    function validateHashLength(string memory _hash) public view returns(uint) {
        return (hash2SignaturesList[_hash].length);
    }
    function mySignaturesLength() public view returns(uint) {
        return (address2SignaturesList[_msgSender()].length);
    }
}

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

Contract ABI

[{"inputs":[{"internalType":"contract IERC20Votes","name":"_TokenBitsAddress","type":"address"},{"internalType":"uint256","name":"_bonusReward","type":"uint256"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"_rewardAmount","type":"uint256"}],"name":"newRewardValue","type":"event"},{"inputs":[{"internalType":"string","name":"_hash","type":"string"},{"internalType":"string","name":"_data","type":"string"}],"name":"Certify","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"address2state","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"bonusReward","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"contract IERC20Votes","name":"_newTokenBits","type":"address"}],"name":"changeTokenAddress","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"mySignatures","outputs":[{"internalType":"string[]","name":"","type":"string[]"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"mySignaturesLength","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_i","type":"uint256"}],"name":"mySingleSignature","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_rewardAmount","type":"uint256"}],"name":"setReward","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"totalCertiBits","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"string","name":"_hash","type":"string"}],"name":"validateHash","outputs":[{"components":[{"internalType":"address","name":"signer","type":"address"},{"internalType":"string","name":"sign_data","type":"string"}],"internalType":"struct CertiBits.signature[]","name":"","type":"tuple[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"string","name":"_hash","type":"string"}],"name":"validateHashLength","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"string","name":"_hash","type":"string"},{"internalType":"uint256","name":"_i","type":"uint256"}],"name":"validateSingleHash","outputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"}]

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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)

00000000000000000000000054d354f2ddc369e2250c2a460b52219f69c6335d0000000000000000000000000000000000000000000000056bc75e2d63100000

-----Decoded View---------------
Arg [0] : _TokenBitsAddress (address): 0x54d354f2ddc369e2250c2a460b52219f69c6335d
Arg [1] : _bonusReward (uint256): 100000000000000000000

-----Encoded View---------------
2 Constructor Arguments found :
Arg [0] : 00000000000000000000000054d354f2ddc369e2250c2a460b52219f69c6335d
Arg [1] : 0000000000000000000000000000000000000000000000056bc75e2d63100000


Block Transaction Gas Used Reward
Age Block Fee Address BC Fee Address Voting Power Jailed Incoming
Block Uncle Number Difficulty Gas Used Reward
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