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ERC-20
Overview
Max Total Supply
1,000,000,000 DNAB
Holders
323
Market
Onchain Market Cap
$0.00
Circulating Supply Market Cap
-
Other Info
Token Contract (WITH 8 Decimals)
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# | Exchange | Pair | Price | 24H Volume | % Volume |
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Contract Source Code Verified (Exact Match)
Contract Name:
TokenERC20
Compiler Version
v0.4.24+commit.e67f0147
Optimization Enabled:
No with 200 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity)
/** *Submitted for verification at Etherscan.io on 2018-09-11 */ pragma solidity ^0.4.16; interface tokenRecipient { function receiveApproval(address _from, uint256 _value, address _token, bytes _extraData) external; } contract TokenERC20 { // Public variables of the token string public name; string public symbol; uint8 public decimals = 8; address public owner; uint256 public totalSupply; bool public lockIn; mapping (address => bool) whitelisted; mapping (address => bool) admin; // This creates an array with all balances mapping (address => uint256) public balanceOf; mapping (address => mapping (address => uint256)) public allowance; // This generates a public event on the blockchain that will notify clients event Transfer(address indexed from, address indexed to, uint256 value); event Approval(address indexed tokenOwner, address indexed spender, uint tokens); // This notifies clients about the amount burnt event Burn(address indexed from, uint256 value); /** * Constrctor function * * Initializes contract with initial supply tokens to the creator of the contract */ constructor( uint256 initialSupply, string tokenName, string tokenSymbol, address crowdsaleOwner ) public { totalSupply = initialSupply * 10 ** uint256(decimals); // Update total supply with the decimal amount balanceOf[msg.sender] = totalSupply; // Give the creator all initial tokens name = tokenName; // Set the name for display purposes symbol = tokenSymbol; // Set the symbol for display purposes lockIn = true; admin[msg.sender] = true; whitelisted[msg.sender] = true; admin[crowdsaleOwner]=true; whitelisted[crowdsaleOwner]=true; owner = crowdsaleOwner; } function toggleLockIn() public { require(msg.sender == owner); lockIn = !lockIn; } function addToWhitelist(address newAddress) public { require(admin[msg.sender]); whitelisted[newAddress] = true; } function removeFromWhitelist(address oldaddress) public { require(admin[msg.sender]); require(oldaddress != owner); whitelisted[oldaddress] = false; } function addToAdmin(address newAddress) public { require(admin[msg.sender]); admin[newAddress]=true; } function removeFromAdmin(address oldAddress) public { require(admin[msg.sender]); require(oldAddress != owner); admin[oldAddress]=false; } /** * Internal transfer, only can be called by this contract */ function _transfer(address _from, address _to, uint _value) internal { if (lockIn) { require(whitelisted[_from]); } // Prevent transfer to 0x0 address. Use burn() instead require(_to != 0x0); // Check if the sender has enough require(balanceOf[_from] >= _value); // Check for overflows require(balanceOf[_to] + _value > balanceOf[_to]); // Save this for an assertion in the future uint previousBalances = balanceOf[_from] + balanceOf[_to]; // Subtract from the sender balanceOf[_from] -= _value; // Add the same to the recipient balanceOf[_to] += _value; emit Transfer(_from, _to, _value); // Asserts are used to use static analysis to find bugs in your code. They should never fail assert(balanceOf[_from] + balanceOf[_to] == previousBalances); } /** * Transfer tokens * * Send `_value` tokens to `_to` from your account * * @param _to The address of the recipient * @param _value the amount to send */ function transfer(address _to, uint256 _value) public { _transfer(msg.sender, _to, _value); } /** * Transfer tokens from other address * * Send `_value` tokens to `_to` on behalf of `_from` * * @param _from The address of the sender * @param _to The address of the recipient * @param _value the amount to send */ function transferFrom(address _from, address _to, uint256 _value) public returns (bool success) { require(_value <= allowance[_from][msg.sender]); // Check allowance allowance[_from][msg.sender] -= _value; _transfer(_from, _to, _value); return true; } /** * Set allowance for other address * * Allows `_spender` to spend no more than `_value` tokens on your behalf * * @param _spender The address authorized to spend * @param _value the max amount they can spend */ function approve(address _spender, uint256 _value) public returns (bool success) { allowance[msg.sender][_spender] = _value; emit Approval(msg.sender, _spender, _value); return true; } /** * Set allowance for other address and notify * * Allows `_spender` to spend no more than `_value` tokens on your behalf, and then ping the contract about it * * @param _spender The address authorized to spend * @param _value the max amount they can spend * @param _extraData some extra information to send to the approved contract */ function approveAndCall(address _spender, uint256 _value, bytes _extraData) public returns (bool success) { tokenRecipient spender = tokenRecipient(_spender); if (approve(_spender, _value)) { spender.receiveApproval(msg.sender, _value, this, _extraData); return true; } } /** * Destroy tokens * * Remove `_value` tokens from the system irreversibly * * @param _value the amount of money to burn */ function burn(uint256 _value) public returns (bool success) { require(balanceOf[msg.sender] >= _value); // Check if the sender has enough balanceOf[msg.sender] -= _value; // Subtract from the sender totalSupply -= _value; // Updates totalSupply emit Burn(msg.sender, _value); return true; } /** * Destroy tokens from other account * * Remove `_value` tokens from the system irreversibly on behalf of `_from`. * * @param _from the address of the sender * @param _value the amount of money to burn */ function burnFrom(address _from, uint256 _value) public returns (bool success) { require(balanceOf[_from] >= _value); // Check if the targeted balance is enough require(_value <= allowance[_from][msg.sender]); // Check allowance balanceOf[_from] -= _value; // Subtract from the targeted balance allowance[_from][msg.sender] -= _value; // Subtract from the sender's allowance totalSupply -= _value; // Update totalSupply emit Burn(_from, _value); return true; } }
Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
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Contract Creation Code
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Deployed Bytecode
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
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
-----Decoded View---------------
Arg [0] : initialSupply (uint256): 1000000000
Arg [1] : tokenName (string): DNA BLOCKCHAIN
Arg [2] : tokenSymbol (string): DNAB
Arg [3] : crowdsaleOwner (address): 0x9a249C7Dd54260b50041163Abc77d5cd78b121A1
-----Encoded View---------------
8 Constructor Arguments found :
Arg [0] : 000000000000000000000000000000000000000000000000000000003b9aca00
Arg [1] : 0000000000000000000000000000000000000000000000000000000000000080
Arg [2] : 00000000000000000000000000000000000000000000000000000000000000c0
Arg [3] : 0000000000000000000000009a249c7dd54260b50041163abc77d5cd78b121a1
Arg [4] : 000000000000000000000000000000000000000000000000000000000000000e
Arg [5] : 444e4120424c4f434b434841494e000000000000000000000000000000000000
Arg [6] : 0000000000000000000000000000000000000000000000000000000000000004
Arg [7] : 444e414200000000000000000000000000000000000000000000000000000000
Swarm Source
bzzr://5782db82c9c90d973f32c85d57eb71713a3fe9b85fd01fa890d42b53be2d74d7
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