Cryo Explorer Ethereum Mainnet

Address Contract Partially Verified

Address 0xE41d2489571d322189246DaFA5ebDe1F4699F498
Balance 0 ETH
Nonce 1
Code Size 2946 bytes
Indexed Transactions 5 (24,458,30324,458,420)
Gas Used (indexed) 193,842
External Etherscan · Sourcify

Contract Bytecode

2946 bytes
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Verified Source Code Partial Match

Compiler: v0.4.11+commit.68ef5810 Optimization: No
ZRXToken.sol 140 lines
/*

  Copyright 2017 ZeroEx Intl.

  Licensed under the Apache License, Version 2.0 (the "License");
  you may not use this file except in compliance with the License.
  You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

  Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an "AS IS" BASIS,
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  See the License for the specific language governing permissions and
  limitations under the License.

*/

pragma solidity 0.4.11;

contract Token {

    /// @return total amount of tokens
    function totalSupply() constant returns (uint supply) {}

    /// @param _owner The address from which the balance will be retrieved
    /// @return The balance
    function balanceOf(address _owner) constant returns (uint balance) {}

    /// @notice send `_value` token to `_to` from `msg.sender`
    /// @param _to The address of the recipient
    /// @param _value The amount of token to be transferred
    /// @return Whether the transfer was successful or not
    function transfer(address _to, uint _value) returns (bool success) {}

    /// @notice send `_value` token to `_to` from `_from` on the condition it is approved by `_from`
    /// @param _from The address of the sender
    /// @param _to The address of the recipient
    /// @param _value The amount of token to be transferred
    /// @return Whether the transfer was successful or not
    function transferFrom(address _from, address _to, uint _value) returns (bool success) {}

    /// @notice `msg.sender` approves `_addr` to spend `_value` tokens
    /// @param _spender The address of the account able to transfer the tokens
    /// @param _value The amount of wei to be approved for transfer
    /// @return Whether the approval was successful or not
    function approve(address _spender, uint _value) returns (bool success) {}

    /// @param _owner The address of the account owning tokens
    /// @param _spender The address of the account able to transfer the tokens
    /// @return Amount of remaining tokens allowed to spent
    function allowance(address _owner, address _spender) constant returns (uint remaining) {}

    event Transfer(address indexed _from, address indexed _to, uint _value);
    event Approval(address indexed _owner, address indexed _spender, uint _value);
}

contract StandardToken is Token {

    function transfer(address _to, uint _value) returns (bool) {
        //Default assumes totalSupply can't be over max (2^256 - 1).
        if (balances[msg.sender] >= _value && balances[_to] + _value >= balances[_to]) {
            balances[msg.sender] -= _value;
            balances[_to] += _value;
            Transfer(msg.sender, _to, _value);
            return true;
        } else { return false; }
    }

    function transferFrom(address _from, address _to, uint _value) returns (bool) {
        if (balances[_from] >= _value && allowed[_from][msg.sender] >= _value && balances[_to] + _value >= balances[_to]) {
            balances[_to] += _value;
            balances[_from] -= _value;
            allowed[_from][msg.sender] -= _value;
            Transfer(_from, _to, _value);
            return true;
        } else { return false; }
    }

    function balanceOf(address _owner) constant returns (uint) {
        return balances[_owner];
    }

    function approve(address _spender, uint _value) returns (bool) {
        allowed[msg.sender][_spender] = _value;
        Approval(msg.sender, _spender, _value);
        return true;
    }

    function allowance(address _owner, address _spender) constant returns (uint) {
        return allowed[_owner][_spender];
    }

    mapping (address => uint) balances;
    mapping (address => mapping (address => uint)) allowed;
    uint public totalSupply;
}

contract UnlimitedAllowanceToken is StandardToken {

    uint constant MAX_UINT = 2**256 - 1;
    
    /// @dev ERC20 transferFrom, modified such that an allowance of MAX_UINT represents an unlimited allowance.
    /// @param _from Address to transfer from.
    /// @param _to Address to transfer to.
    /// @param _value Amount to transfer.
    /// @return Success of transfer.
    function transferFrom(address _from, address _to, uint _value)
        public
        returns (bool)
    {
        uint allowance = allowed[_from][msg.sender];
        if (balances[_from] >= _value
            && allowance >= _value
            && balances[_to] + _value >= balances[_to]
        ) {
            balances[_to] += _value;
            balances[_from] -= _value;
            if (allowance < MAX_UINT) {
                allowed[_from][msg.sender] -= _value;
            }
            Transfer(_from, _to, _value);
            return true;
        } else {
            return false;
        }
    }
}

contract ZRXToken is UnlimitedAllowanceToken {

    uint8 constant public decimals = 18;
    uint public totalSupply = 10**27; // 1 billion tokens, 18 decimal places
    string constant public name = "0x Protocol Token";
    string constant public symbol = "ZRX";

    function ZRXToken() {
        balances[msg.sender] = totalSupply;
    }
}

Write Contract 9 functions

These functions modify contract state and require a wallet transaction to execute.

allowance 0xdd62ed3e
address _owner
address _spender
returns: uint256
approve 0x095ea7b3
address _spender
uint256 _value
returns: bool
balanceOf 0x70a08231
address _owner
returns: uint256
decimals 0x313ce567
No parameters
returns: uint8
name 0x06fdde03
No parameters
returns: string
symbol 0x95d89b41
No parameters
returns: string
totalSupply 0x18160ddd
No parameters
returns: uint256
transfer 0xa9059cbb
address _to
uint256 _value
returns: bool
transferFrom 0x23b872dd
address _from
address _to
uint256 _value
returns: bool

Top Interactions

Recent Transactions

CSV
|
Hash Method Block Age From/To Value Txn Fee Type
0x4411296d...9fc8a2 transfer 24,458,420 IN 0xeC1BeDF0...ab95 0 ETH 0.000030030000 ETH Legacy
0x8c6cded0...abec99 transfer 24,458,336 IN 0x21a31Ee1...5549 0 ETH EIP-1559
0xcc320134...c14e0a transfer 24,458,332 IN 0xdd3d72C5...Ceee 0 ETH 0.000051906000 ETH Legacy
0x66fa90f1...b7b232 transfer 24,458,306 IN 0x91d41f3c...DEBE 0 ETH 0.000001961553 ETH Legacy
0x7f4625d8...9fcea5 transfer 24,458,303 IN 0x33B70A6d...d5c2 0 ETH EIP-1559