ETH Price: $3,540.38 (-1.17%)
Gas: 25 Gwei

Contract

0xb566E883555aEBf5B1DB211070b530Ab00a4B18a
 

Overview

ETH Balance

0 ETH

Eth Value

$0.00

More Info

Private Name Tags

TokenTracker

DCTDAO (DCTD) (@$0.0173)

Multichain Info

1 address found via
Transaction Hash
Method
Block
From
To
Value
Approve190929242024-01-26 19:41:2362 days ago1706298083IN
DCTDAO: DCTD Token
0 ETH0.0003973616.39826842
Approve189344482024-01-04 14:04:3584 days ago1704377075IN
DCTDAO: DCTD Token
0 ETH0.0006461226.66403237
Transfer189095402024-01-01 2:11:1188 days ago1704075071IN
DCTDAO: DCTD Token
0 ETH0.0012938510.81209379
Transfer188872852023-12-28 23:09:5991 days ago1703804999IN
DCTDAO: DCTD Token
0 ETH0.002701318.06444449
Approve188728472023-12-26 22:29:3593 days ago1703629775IN
DCTDAO: DCTD Token
0 ETH0.0007205215.59848664
Approve188459162023-12-23 3:43:2397 days ago1703303003IN
DCTDAO: DCTD Token
0 ETH0.0011126224.00842933
Approve188411122023-12-22 11:33:3597 days ago1703244815IN
DCTDAO: DCTD Token
0 ETH0.0015227932.99244445
Transfer188096582023-12-18 1:39:11102 days ago1702863551IN
DCTDAO: DCTD Token
0 ETH0.0062950242.09674382
Approve185392252023-11-10 4:41:47140 days ago1699591307IN
DCTDAO: DCTD Token
0 ETH0.0007072429.18639146
Approve184913842023-11-03 11:58:11146 days ago1699012691IN
DCTDAO: DCTD Token
0 ETH0.0004126617.02994574
Approve179086032023-08-13 21:24:11228 days ago1691961851IN
DCTDAO: DCTD Token
0 ETH0.0003217213.27702673
Approve178678292023-08-08 4:29:59234 days ago1691468999IN
DCTDAO: DCTD Token
0 ETH0.0005338322.02999983
Approve176411132023-07-07 9:43:35265 days ago1688723015IN
DCTDAO: DCTD Token
0 ETH0.0005229321.58040898
Approve176096282023-07-02 23:35:35270 days ago1688340935IN
DCTDAO: DCTD Token
0 ETH0.0006950614.97888882
Approve170292852023-04-12 3:31:59352 days ago1681270319IN
DCTDAO: DCTD Token
0 ETH0.0005798823.93065828
Approve170230892023-04-11 6:29:11353 days ago1681194551IN
DCTDAO: DCTD Token
0 ETH0.0004307117.77478155
Approve170230892023-04-11 6:29:11353 days ago1681194551IN
DCTDAO: DCTD Token
0 ETH0.0004307117.77478155
Approve170204522023-04-10 21:31:35353 days ago1681162295IN
DCTDAO: DCTD Token
0 ETH0.0007796732.17539545
Approve170126242023-04-09 18:52:59354 days ago1681066379IN
DCTDAO: DCTD Token
0 ETH0.0005411522.33239625
Approve170121742023-04-09 17:22:23354 days ago1681060943IN
DCTDAO: DCTD Token
0 ETH0.0004951220.43272504
Approve170096072023-04-09 8:36:23355 days ago1681029383IN
DCTDAO: DCTD Token
0 ETH0.0004655719.21322095
Approve170096062023-04-09 8:36:11355 days ago1681029371IN
DCTDAO: DCTD Token
0 ETH0.000464419.16499747
Approve170090852023-04-09 6:49:11355 days ago1681022951IN
DCTDAO: DCTD Token
0 ETH0.0004671919.28012706
Transfer169100732023-03-26 7:19:23369 days ago1679815163IN
DCTDAO: DCTD Token
0 ETH0.0018578412.42399237
Transfer169100532023-03-26 7:15:23369 days ago1679814923IN
DCTDAO: DCTD Token
0 ETH0.0004592415.71886182
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Contract Source Code Verified (Exact Match)

Contract Name:
DCTDAO

Compiler Version
v0.6.6+commit.6c089d02

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion, MIT license
/**
 *Submitted for verification at Etherscan.io on 2021-02-10
*/

pragma solidity =0.6.6;
contract DCTDAO {
    string public constant name = "DCTDAO";
    string public constant symbol = "DCTD";
    uint8 public constant decimals = 18;
    uint256 public totalSupply;

    mapping (address => uint256) public balances;
    mapping (address => mapping (address => uint256)) internal allowances;
    mapping (address => mapping (uint32 => Checkpoint)) public checkpoints;
    mapping (address => uint32) public numCheckpoints;

    struct Checkpoint {
        uint32 fromBlock;
        uint256 balance;
    }

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

    constructor () public {
        mint(address(msg.sender), 10000000 * 1e18);
    }

    function mint(address _account, uint256 _number) internal {
        balances[_account] = _number;
        totalSupply += _number;
        emit Transfer(address(0), _account, _number);
        _moveDelegates(address(0), _account, _number);
    }

    function allowance(address account, address spender) external view returns (uint) {
        return allowances[account][spender];
    }

    function approve(address spender, uint256 rawAmount) external returns (bool) {
        uint256 amount;
        if (rawAmount == uint256(-1)) {
            amount = uint256(-1);
        } else {
            amount = safe256(rawAmount, "DCTD::approve: amount exceeds 256 bits");
        }

        allowances[msg.sender][spender] = amount;
        emit Approval(msg.sender, spender, amount);
        return true;
    }

    function balanceOf(address account) external view returns (uint) {
        return balances[account];
    }

    function transfer(address dst, uint rawAmount) external returns (bool) {
        uint256 amount = safe256(rawAmount, "DCTD::transfer: amount exceeds 256 bits");
        _transferTokens(msg.sender, dst, amount);
        return true;
    }

    function transferFrom(address src, address dst, uint rawAmount) external returns (bool) {
        address spender = msg.sender;
        uint256 spenderAllowance = allowances[src][spender];
        uint256 amount = safe256(rawAmount, "DCTD::approve: amount exceeds 256 bits");

        if (spender != src && spenderAllowance != uint256(-1)) {
            uint256 newAllowance = sub256(spenderAllowance, amount, "DCTD::transferFrom: transfer amount exceeds spender allowance");
            allowances[src][spender] = newAllowance;
            emit Approval(src, spender, newAllowance);
        }

        _transferTokens(src, dst, amount);
        return true;
    }

    function _transferTokens(address src, address dst, uint256 amount) internal {
        require(src != address(0), "DCTD::_transferTokens: cannot transfer from the zero address");
        require(dst != address(0), "DCTD::_transferTokens: cannot transfer to the zero address");

        balances[src] = sub256(balances[src], amount, "DCTD::_transferTokens: transfer amount exceeds balance");
        balances[dst] = add256(balances[dst], amount, "DCTD::_transferTokens: transfer amount overflows");

        emit Transfer(src, dst, amount);
        _moveDelegates(src, dst, amount);
    }

    function _moveDelegates(address srcRep, address dstRep, uint256 amount) internal {
        if (srcRep != dstRep && amount > 0) {
            if (srcRep != address(0)) {
                uint32 srcRepNum = numCheckpoints[srcRep];
                uint256 srcRepOld = srcRepNum > 0 ? checkpoints[srcRep][srcRepNum - 1].balance : 0;
                uint256 srcRepNew = sub256(srcRepOld, amount, "DCTD::_moveDelegates: amount underflows");
                _writeCheckpoint(srcRep, srcRepNum, srcRepNew);
            }

            if (dstRep != address(0)) {
                uint32 dstRepNum = numCheckpoints[dstRep];
                uint256 dstRepOld = dstRepNum > 0 ? checkpoints[dstRep][dstRepNum - 1].balance : 0;
                uint256 dstRepNew = add256(dstRepOld, amount, "DCTD::_moveDelegates: amount overflows");
                _writeCheckpoint(dstRep, dstRepNum, dstRepNew);
            }
        }
    }

    function _writeCheckpoint(address account, uint32 nCheckpoints, uint256 newBalance) internal {
      uint32 blockNumber = safe32(block.number, "DCTD::_writeCheckpoint: block number exceeds 32 bits");

      if (nCheckpoints > 0 && checkpoints[account][nCheckpoints - 1].fromBlock == blockNumber) {
          checkpoints[account][nCheckpoints - 1].balance = newBalance;
      } else {
          checkpoints[account][nCheckpoints] = Checkpoint(blockNumber, newBalance);
          numCheckpoints[account] = nCheckpoints + 1;
      }
    }

    function safe32(uint n, string memory errorMessage) internal pure returns (uint32) {
        require(n < 2**32, errorMessage);
        return uint32(n);
    }

    function safe256(uint256 n, string memory errorMessage) internal pure returns (uint256) {
        require(n <= uint(2**256-1), errorMessage);
        return uint256(n);
    }

    function add256(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, errorMessage);
        return c;
    }

    function sub256(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b <= a, errorMessage);
        return a - b;
    }
}

Contract Security Audit

Contract ABI

[{"inputs":[],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"spender","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Transfer","type":"event"},{"inputs":[{"internalType":"address","name":"account","type":"address"},{"internalType":"address","name":"spender","type":"address"}],"name":"allowance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"rawAmount","type":"uint256"}],"name":"approve","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"balances","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"uint32","name":"","type":"uint32"}],"name":"checkpoints","outputs":[{"internalType":"uint32","name":"fromBlock","type":"uint32"},{"internalType":"uint256","name":"balance","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"decimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"numCheckpoints","outputs":[{"internalType":"uint32","name":"","type":"uint32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"dst","type":"address"},{"internalType":"uint256","name":"rawAmount","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"src","type":"address"},{"internalType":"address","name":"dst","type":"address"},{"internalType":"uint256","name":"rawAmount","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"}]

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Swarm Source

ipfs://5d7b3004ef48e3fbbb73348d5e74f9ca1802587542cbc645f0d0e4bb72e5c5fb

Block Transaction Difficulty Gas Used Reward
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Block Uncle Number Difficulty Gas Used Reward
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OVERVIEW

A Quantum Proof Cross-Chain DEX, including Polkadot and more.

Validator Index Block Amount
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Txn Hash Block Value Eth2 PubKey Valid
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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.