Contract Address Details

0xe7D3e4413E29ae35B0893140F4500965c74365e5

Token: B2BCoin (BBC)

Creator: 0x225068–2b916c at 0xc8bb50–6ca5ed

Balance: 0 PLS ( )

Tokens: Fetching tokens... Error trying to fetch balances.

Transactions: 49,514 Transactions

Transfers: 0 Transfers

Gas Used: 0

Last Balance Update: 26426211

Transactions Token Transfers Tokens Internal Transactions Coin Balance History Logs Code Read Contract Write Contract

This contract has been partially verified via Sourcify. View contract in Sourcify repository

Contract name:: B2BCoinContract
Optimization enabled: false

Compiler version: v0.4.21+commit.dfe3193c

EVM Version: byzantium
Verified at: 2026-03-03T02:33:23.861300Z

B2BCoinContract.sol

pragma solidity ^0.4.13;

contract tokenRecipientInterface {
  function receiveApproval(address _from, uint256 _value, address _token, bytes _extraData);
}

contract ERC20TokenInterface {
  function totalSupply() public constant returns (uint256 _totalSupply);
  function balanceOf(address _owner) public constant returns (uint256 balance);
  function transfer(address _to, uint256 _value) public returns (bool success);
  function transferFrom(address _from, address _to, uint256 _value) public returns (bool success);
  function approve(address _spender, uint256 _value) public returns (bool success);
  function allowance(address _owner, address _spender) public constant returns (uint256 remaining);

  event Transfer(address indexed _from, address indexed _to, uint256 _value);
  event Approval(address indexed _owner, address indexed _spender, uint256 _value);
}

contract SafeMath {
    
    uint256 constant public MAX_UINT256 = 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF;

    function safeAdd(uint256 x, uint256 y) constant internal returns (uint256 z) {
        require(x <= MAX_UINT256 - y);
        return x + y;
    }

    function safeSub(uint256 x, uint256 y) constant internal returns (uint256 z) {
        require(x >= y);
        return x - y;
    }

    function safeMul(uint256 x, uint256 y) constant internal returns (uint256 z) {
        if (y == 0) {
            return 0;
        }
        require(x <= (MAX_UINT256 / y));
        return x * y;
    }
}

contract Owned {
    address public owner;
    address public newOwner;

    function Owned() {
        owner = msg.sender;
    }

    modifier onlyOwner {
        assert(msg.sender == owner);
        _;
    }

    function transferOwnership(address _newOwner) public onlyOwner {
        require(_newOwner != owner);
        newOwner = _newOwner;
    }

    function acceptOwnership() public {
        require(msg.sender == newOwner);
        OwnerUpdate(owner, newOwner);
        owner = newOwner;
        newOwner = 0x0;
    }

    event OwnerUpdate(address _prevOwner, address _newOwner);
}

contract Lockable is Owned {

    uint256 public lockedUntilBlock;

    event ContractLocked(uint256 _untilBlock, string _reason);

    modifier lockAffected {
        require(block.number > lockedUntilBlock);
        _;
    }

    function lockFromSelf(uint256 _untilBlock, string _reason) internal {
        lockedUntilBlock = _untilBlock;
        ContractLocked(_untilBlock, _reason);
    }


    function lockUntil(uint256 _untilBlock, string _reason) onlyOwner public {
        lockedUntilBlock = _untilBlock;
        ContractLocked(_untilBlock, _reason);
    }
}

contract ERC20Token is ERC20TokenInterface, SafeMath, Owned, Lockable {

    // Name of token
    string public name;
    // Abbreviation of tokens name
    string public symbol;
    // Number of decimals token has
    uint8 public decimals;
    // Maximum tokens that can be minted
    uint256 public totalSupplyLimit;

    // Current supply of tokens
    uint256 supply = 0;
    // Map of users balances
    mapping (address => uint256) balances;
    // Map of users allowances
    mapping (address => mapping (address => uint256)) allowances;

    // Event that shows that new tokens were created
    event Mint(address indexed _to, uint256 _value);
    // Event that shows that old tokens were destroyed
    event Burn(address indexed _from, uint _value);

    /**
    * @dev Returns number of tokens in circulation
    *
    * @return total number od tokens
    */
    function totalSupply() public constant returns (uint256) {
        return supply;
    }

    /**
    * @dev Returns the balance of specific account
    *
    * @param _owner The account that caller wants to querry
    * @return the balance on this account
    */
    function balanceOf(address _owner) public constant returns (uint256 balance) {
        return balances[_owner];
    }

    /**
    * @dev User can transfer tokens with this method, method is disabled if emergencyLock is activated
    *
    * @param _to Reciever of tokens
    * @param _value The amount of tokens that will be sent 
    * @return if successful returns true
    */
    function transfer(address _to, uint256 _value) lockAffected public returns (bool success) {
        require(_to != 0x0 && _to != address(this));
        balances[msg.sender] = safeSub(balanceOf(msg.sender), _value);
        balances[_to] = safeAdd(balanceOf(_to), _value);
        Transfer(msg.sender, _to, _value);
        return true;
    }

    /**
    * @dev This is used to allow some account to utilise transferFrom and sends tokens on your behalf, this method is disabled if emergencyLock is activated
    *
    * @param _spender Who can send tokens on your behalf
    * @param _value The amount of tokens that are allowed to be sent 
    * @return if successful returns true
    */
    function approve(address _spender, uint256 _value) lockAffected public returns (bool success) {
        allowances[msg.sender][_spender] = _value;
        Approval(msg.sender, _spender, _value);
        return true;
    }

    /**
    * @dev This is used to send tokens and execute code on other smart contract, this method is disabled if emergencyLock is activated
    *
    * @param _spender Contract that is receiving tokens
    * @param _value The amount that msg.sender is sending
    * @param _extraData Additional params that can be used on reciving smart contract
    * @return if successful returns true
    */
    function approveAndCall(address _spender, uint256 _value, bytes _extraData) lockAffected public returns (bool success) {
        tokenRecipientInterface spender = tokenRecipientInterface(_spender);
        approve(_spender, _value);
        spender.receiveApproval(msg.sender, _value, this, _extraData);
        return true;
    }

    /**
    * @dev Sender can transfer tokens on others behalf, this method is disabled if emergencyLock is activated
    *
    * @param _from The account that will send tokens
    * @param _to Account that will recive the tokens
    * @param _value The amount that msg.sender is sending
    * @return if successful returns true
    */
    function transferFrom(address _from, address _to, uint256 _value) lockAffected public returns (bool success) {
        require(_to != 0x0 && _to != address(this));
        balances[_from] = safeSub(balanceOf(_from), _value);
        balances[_to] = safeAdd(balanceOf(_to), _value);
        allowances[_from][msg.sender] = safeSub(allowances[_from][msg.sender], _value);
        Transfer(_from, _to, _value);
        return true;
    }

    /**
    * @dev Returns the amount od tokens that can be sent from this addres by spender
    *
    * @param _owner Account that has tokens
    * @param _spender Account that can spend tokens
    * @return remaining balance to spend
    */
    function allowance(address _owner, address _spender) public constant returns (uint256 remaining) {
        return allowances[_owner][_spender];
    }

    /**
    * @dev Creates new tokens as long as total supply does not reach limit
    *
    * @param _to Reciver od newly created tokens
    * @param _amount Amount of tokens to be created;
    */
    function mintTokens(address _to, uint256 _amount) onlyOwner public {
        require(supply + _amount <= totalSupplyLimit);
        supply = safeAdd(supply, _amount);
        balances[_to] = safeAdd(balances[_to], _amount);
        Mint(_to, _amount);
        Transfer(0x0, _to, _amount);
    }

    /**
    * @dev Destroys the amount of tokens and lowers total supply
    *
    * @param _amount Number of tokens user wants to destroy
    */
    function burn(uint _amount) public {
        balances[msg.sender] = safeSub(balanceOf(msg.sender), _amount);
        supply = safeSub(supply, _amount);
        Burn(msg.sender, _amount);
        Transfer(msg.sender, 0x0, _amount);
    }

    /**
    * @dev Saves exidentaly sent tokens to this contract, can be used only by owner
    *
    * @param _tokenAddress Address of tokens smart contract
    * @param _to Where to send the tokens
    * @param _amount The amount of tokens that we are salvaging
    */
    function salvageTokensFromContract(address _tokenAddress, address _to, uint _amount) onlyOwner public {
        ERC20TokenInterface(_tokenAddress).transfer(_to, _amount);
    }

    /**
    * @dev Disables the contract and wipes all the balances, can be used only by owner
    */
    function killContract() public onlyOwner {
        selfdestruct(owner);
    }
}

contract B2BCoinContract is ERC20Token {

    /**
    * @dev Intialises token and all the necesary variable
    */
    function B2BCoinContract() {
        name = "B2BCoin";
        symbol = "BBC";
        decimals = 18;
        totalSupplyLimit = 1000000000 * 10**18;
        lockFromSelf(0, "Lock before crowdsale starts");
    }
}

Compiler Settings

{"remappings":[],"optimizer":{"runs":200,"enabled":false},"libraries":{},"evmVersion":"byzantium","compilationTarget":{"B2BCoinContract.sol":"B2BCoinContract"}}

Contract ABI

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uts":[{"type":"address","name":"_owner","indexed":true},{"type":"address","name":"_spender","indexed":true},{"type":"uint256","name":"_value","indexed":false}],"anonymous":false}]

Contract Creation Code

Verify & Publish

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