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Contract

0xd81AbCDD67c7eb1c67C56C10A2077938037E4b06
 

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0 ETH

ETH Value

$0.00

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Transaction Hash
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Permit1205388782024-05-25 22:35:333 days ago1716676533IN
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0 ETH0.000003310.0610325
Permit1204642922024-05-24 5:09:215 days ago1716527361IN
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Permit1202910832024-05-20 4:55:439 days ago1716180943IN
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Permit1202305242024-05-18 19:17:0510 days ago1716059825IN
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Permit1200509462024-05-14 15:31:0914 days ago1715700669IN
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0 ETH0.000001310.0243254
Permit1200502802024-05-14 15:08:5714 days ago1715699337IN
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0 ETH0.000001270.02345027
Permit1200394452024-05-14 9:07:4715 days ago1715677667IN
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0 ETH0.000003220.05948076
Permit1200165062024-05-13 20:23:0915 days ago1715631789IN
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0 ETH0.000003510.06474296
Permit1199533672024-05-12 9:18:3117 days ago1715505511IN
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0 ETH0.000003290.0606614
Permit1198767222024-05-10 14:43:4118 days ago1715352221IN
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0 ETH0.000003330.06139893
Permit1198674202024-05-10 9:33:3719 days ago1715333617IN
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0 ETH0.000003550.06546641
Permit1197405822024-05-07 11:05:4121 days ago1715079941IN
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0 ETH0.000000960.02584796
Permit1197389942024-05-07 10:12:4521 days ago1715076765IN
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0 ETH0.000001150.03100023
Permit1197384082024-05-07 9:53:1321 days ago1715075593IN
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0 ETH0.000001390.03751339
Permit1195344782024-05-02 16:35:3326 days ago1714667733IN
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0 ETH0.000003350.0618676
Transfer1195293072024-05-02 13:43:1126 days ago1714657391IN
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0 ETH0.000003930.13417663
Transfer1195292752024-05-02 13:42:0726 days ago1714657327IN
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0 ETH0.000003970.13547379
Transfer1195292152024-05-02 13:40:0726 days ago1714657207IN
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0 ETH0.000003910.13370305
Transfer1195290952024-05-02 13:36:0726 days ago1714656967IN
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Transfer1195289182024-05-02 13:30:1326 days ago1714656613IN
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Transfer1195288842024-05-02 13:29:0526 days ago1714656545IN
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0 ETH0.000003250.13414812
Transfer1195288832024-05-02 13:29:0326 days ago1714656543IN
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0 ETH0.000003930.13414812
Transfer1195286392024-05-02 13:20:5526 days ago1714656055IN
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0 ETH0.000003910.13354127
Transfer1195284352024-05-02 13:14:0726 days ago1714655647IN
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0 ETH0.00000390.13324434
Transfer1195284022024-05-02 13:13:0126 days ago1714655581IN
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0 ETH0.000003990.13625604
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Latest 25 internal transactions (View All)

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Parent Transaction Hash Block From To Value
1075528142023-07-30 8:06:45304 days ago1690704405
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1075528142023-07-30 8:06:45304 days ago1690704405
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1075485702023-07-30 5:45:17304 days ago1690695917
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1075264562023-07-29 17:28:09304 days ago1690651689
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1075217312023-07-29 14:50:39304 days ago1690642239
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1075217312023-07-29 14:50:39304 days ago1690642239
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1075002412023-07-29 2:54:19305 days ago1690599259
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1074948012023-07-28 23:52:59305 days ago1690588379
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1074745042023-07-28 12:36:25305 days ago1690547785
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1074494732023-07-27 22:42:03306 days ago1690497723
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1074458602023-07-27 20:41:37306 days ago1690490497
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1073960532023-07-26 17:01:23307 days ago1690390883
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Similar Match Source Code
This contract matches the deployed Bytecode of the Source Code for Contract 0x4C8DC708...703245a40
The constructor portion of the code might be different and could alter the actual behaviour of the contract

Contract Name:
VaultToken

Compiler Version
v0.8.9+commit.e5eed63a

Optimization Enabled:
Yes with 10000 runs

Other Settings:
default evmVersion, MIT license
/**
 *Submitted for verification at optimistic.etherscan.io on 2022-08-10
*/

// Sources flattened with hardhat v2.9.6 https://hardhat.org

// File @rari-capital/solmate/src/tokens/[email protected]

pragma solidity >=0.8.0;

/// @notice Modern and gas efficient ERC20 + EIP-2612 implementation.
/// @author Solmate (https://github.com/Rari-Capital/solmate/blob/main/src/tokens/ERC20.sol)
/// @author Modified from Uniswap (https://github.com/Uniswap/uniswap-v2-core/blob/master/contracts/UniswapV2ERC20.sol)
/// @dev Do not manually set balances without updating totalSupply, as the sum of all user balances must not exceed it.
abstract contract ERC20 {
    /*//////////////////////////////////////////////////////////////
                                 EVENTS
    //////////////////////////////////////////////////////////////*/

    event Transfer(address indexed from, address indexed to, uint256 amount);

    event Approval(address indexed owner, address indexed spender, uint256 amount);

    /*//////////////////////////////////////////////////////////////
                            METADATA STORAGE
    //////////////////////////////////////////////////////////////*/

    string public name;

    string public symbol;

    uint8 public immutable decimals;

    /*//////////////////////////////////////////////////////////////
                              ERC20 STORAGE
    //////////////////////////////////////////////////////////////*/

    uint256 public totalSupply;

    mapping(address => uint256) public balanceOf;

    mapping(address => mapping(address => uint256)) public allowance;

    /*//////////////////////////////////////////////////////////////
                            EIP-2612 STORAGE
    //////////////////////////////////////////////////////////////*/

    uint256 internal immutable INITIAL_CHAIN_ID;

    bytes32 internal immutable INITIAL_DOMAIN_SEPARATOR;

    mapping(address => uint256) public nonces;

    /*//////////////////////////////////////////////////////////////
                               CONSTRUCTOR
    //////////////////////////////////////////////////////////////*/

    constructor(
        string memory _name,
        string memory _symbol,
        uint8 _decimals
    ) {
        name = _name;
        symbol = _symbol;
        decimals = _decimals;

        INITIAL_CHAIN_ID = block.chainid;
        INITIAL_DOMAIN_SEPARATOR = computeDomainSeparator();
    }

    /*//////////////////////////////////////////////////////////////
                               ERC20 LOGIC
    //////////////////////////////////////////////////////////////*/

    function approve(address spender, uint256 amount) public virtual returns (bool) {
        allowance[msg.sender][spender] = amount;

        emit Approval(msg.sender, spender, amount);

        return true;
    }

    function transfer(address to, uint256 amount) public virtual returns (bool) {
        balanceOf[msg.sender] -= amount;

        // Cannot overflow because the sum of all user
        // balances can't exceed the max uint256 value.
        unchecked {
            balanceOf[to] += amount;
        }

        emit Transfer(msg.sender, to, amount);

        return true;
    }

    function transferFrom(
        address from,
        address to,
        uint256 amount
    ) public virtual returns (bool) {
        uint256 allowed = allowance[from][msg.sender]; // Saves gas for limited approvals.

        if (allowed != type(uint256).max) allowance[from][msg.sender] = allowed - amount;

        balanceOf[from] -= amount;

        // Cannot overflow because the sum of all user
        // balances can't exceed the max uint256 value.
        unchecked {
            balanceOf[to] += amount;
        }

        emit Transfer(from, to, amount);

        return true;
    }

    /*//////////////////////////////////////////////////////////////
                             EIP-2612 LOGIC
    //////////////////////////////////////////////////////////////*/

    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) public virtual {
        require(deadline >= block.timestamp, "PERMIT_DEADLINE_EXPIRED");

        // Unchecked because the only math done is incrementing
        // the owner's nonce which cannot realistically overflow.
        unchecked {
            address recoveredAddress = ecrecover(
                keccak256(
                    abi.encodePacked(
                        "\x19\x01",
                        DOMAIN_SEPARATOR(),
                        keccak256(
                            abi.encode(
                                keccak256(
                                    "Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)"
                                ),
                                owner,
                                spender,
                                value,
                                nonces[owner]++,
                                deadline
                            )
                        )
                    )
                ),
                v,
                r,
                s
            );

            require(recoveredAddress != address(0) && recoveredAddress == owner, "INVALID_SIGNER");

            allowance[recoveredAddress][spender] = value;
        }

        emit Approval(owner, spender, value);
    }

    function DOMAIN_SEPARATOR() public view virtual returns (bytes32) {
        return block.chainid == INITIAL_CHAIN_ID ? INITIAL_DOMAIN_SEPARATOR : computeDomainSeparator();
    }

    function computeDomainSeparator() internal view virtual returns (bytes32) {
        return
            keccak256(
                abi.encode(
                    keccak256("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)"),
                    keccak256(bytes(name)),
                    keccak256("1"),
                    block.chainid,
                    address(this)
                )
            );
    }

    /*//////////////////////////////////////////////////////////////
                        INTERNAL MINT/BURN LOGIC
    //////////////////////////////////////////////////////////////*/

    function _mint(address to, uint256 amount) internal virtual {
        totalSupply += amount;

        // Cannot overflow because the sum of all user
        // balances can't exceed the max uint256 value.
        unchecked {
            balanceOf[to] += amount;
        }

        emit Transfer(address(0), to, amount);
    }

    function _burn(address from, uint256 amount) internal virtual {
        balanceOf[from] -= amount;

        // Cannot underflow because a user's balance
        // will never be larger than the total supply.
        unchecked {
            totalSupply -= amount;
        }

        emit Transfer(from, address(0), amount);
    }
}


// File contracts/interfaces/IPolynomialVaultToken.sol

pragma solidity 0.8.9;

interface IPolynomialVaultToken {
    function mint(address _user, uint256 _amt) external;
    function burn(address _user, uint256 _amt) external;

    function totalSupply() external view returns (uint256 totalSupply);
}


// File contracts/interfaces/IPolynomialVault.sol

pragma solidity 0.8.9;

interface IPolynomialVault {}


// File contracts/core/VaultToken.sol

// SPDX-License-Identifier: MIT
pragma solidity 0.8.9;

contract VaultToken is ERC20 {

    /// -----------------------------------------------------------------------
    /// Variables
    /// -----------------------------------------------------------------------

    /// @notice Corresponding Polynomial Vault
    IPolynomialVault public vault;

    /// -----------------------------------------------------------------------
    /// Modifiers
    /// -----------------------------------------------------------------------

    modifier onlyPolynomialVault {
        if (msg.sender != address(vault)) {
            revert OnlyPolynomialVault(address(this), msg.sender, address(vault));
        }
        _;
    }

    constructor(
        string memory name,
        string memory symbol
    ) ERC20(name, symbol, 18) {}

    function mint(address _user, uint256 _amt) external onlyPolynomialVault {
        _mint(_user, _amt);
    }

    function burn(address _user, uint256 _amt) external onlyPolynomialVault {
        _burn(_user, _amt);
    }

    function setVault(IPolynomialVault _vault) external {
        if (address(vault) != address(0x0)) {
            revert();
        }
        vault = _vault;
    }

    /// -----------------------------------------------------------------------
    /// Errors
    /// -----------------------------------------------------------------------

    error OnlyPolynomialVault(address thrower, address caller, address vault);
}

Contract Security Audit

Contract ABI

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Swarm Source

ipfs://2b92c0c70dc531c72f4ff7d76b761eafcaaf6eb492593131b8c26709c0383526

Block Uncle Number Difficulty Gas Used Reward
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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.