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0
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New Solidity Smart Contract Verification
Contract Address
The 0x address supplied on contract creation.
Is Yul contract
No
Yes
Select Yes if you want to verify Yul contract.
Contract Name
Must match the name specified in the code. For example, in
contract MyContract {..}
MyContract
is the contract name.
Include nightly builds
No
Yes
Select yes if you want to show nightly builds.
Compiler
v0.8.38+commit.1835d247
v0.8.37+commit.f401782d
v0.8.36+commit.8a079791
v0.8.35+commit.47b9dedd
v0.8.35-pre.1+commit.a99b6d8c
v0.8.34+commit.80d5c536
v0.8.33+commit.64118f21
v0.8.32+commit.ebbd65e5
v0.8.31+commit.fd3a2265
v0.8.31-pre.1+commit.b59566f6
v0.8.30+commit.73712a01
v0.8.29+commit.ab55807c
v0.8.28+commit.7893614a
v0.8.27+commit.40a35a09
v0.8.26+commit.8a97fa7a
v0.8.25+commit.b61c2a91
v0.8.24+commit.e11b9ed9
v0.8.23+commit.f704f362
v0.8.22+commit.4fc1097e
v0.8.21+commit.d9974bed
v0.8.20+commit.a1b79de6
v0.8.19+commit.7dd6d404
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v0.8.15+commit.e14f2714
v0.8.14+commit.80d49f37
v0.8.13+commit.abaa5c0e
v0.8.12+commit.f00d7308
v0.8.11+commit.d7f03943
v0.8.10+commit.fc410830
v0.8.9+commit.e5eed63a
v0.8.8+commit.dddeac2f
v0.8.7+commit.e28d00a7
v0.8.6+commit.11564f7e
v0.8.5+commit.a4f2e591
v0.8.4+commit.c7e474f2
v0.8.3+commit.8d00100c
v0.8.2+commit.661d1103
v0.8.1+commit.df193b15
v0.8.0+commit.c7dfd78e
v0.7.6+commit.7338295f
v0.7.5+commit.eb77ed08
v0.7.4+commit.3f05b770
v0.7.3+commit.9bfce1f6
v0.7.2+commit.51b20bc0
v0.7.1+commit.f4a555be
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v0.6.8+commit.0bbfe453
v0.6.7+commit.b8d736ae
v0.6.6+commit.6c089d02
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v0.6.4+commit.1dca32f3
v0.6.3+commit.8dda9521
v0.6.2+commit.bacdbe57
v0.6.1+commit.e6f7d5a4
v0.6.0+commit.26b70077
v0.5.17+commit.d19bba13
v0.5.16+commit.9c3226ce
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v0.4.26+commit.4563c3fc
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v0.4.23+commit.124ca40d
v0.4.22+commit.4cb486ee
v0.4.21+commit.dfe3193c
v0.4.20+commit.3155dd80
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v0.4.18+commit.9cf6e910
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v0.4.16+commit.d7661dd9
v0.4.15+commit.8b45bddb
v0.4.14+commit.c2215d46
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The compiler version is specified in
pragma solidity X.X.X
. Use the compiler version rather than the nightly build. If using the Solidity compiler, run
solc —version
to check.
EVM Version
homestead
tangerineWhistle
spuriousDragon
byzantium
constantinople
petersburg
istanbul
berlin
london
paris
shanghai
default
The EVM version the contract is written for. If the bytecode does not match the version, we try to verify using the latest EVM version.
EVM version details
.
Optimization
No
Yes
If you enabled optimization during compilation, select yes.
Optimization runs
Enter the Solidity Contract Code
pragma solidity ^0.4.13; library SafeMath { function mul(uint256 a, uint256 b) internal pure returns (uint256) { if (a == 0) { return 0; } uint256 c = a * b; assert(c / a == b); return c; } function div(uint256 a, uint256 b) internal pure returns (uint256) { // assert(b > 0); // Solidity automatically throws when dividing by 0 uint256 c = a / b; // assert(a == b * c + a % b); // There is no case in which this doesn't hold return c; } function sub(uint256 a, uint256 b) internal pure returns (uint256) { assert(b <= a); return a - b; } function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; assert(c >= a); return c; } } contract Ownable { address public owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev The Ownable constructor sets the original `owner` of the contract to the sender * account. */ function Ownable() public { owner = msg.sender; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(msg.sender == owner); _; } /** * @dev Allows the current owner to transfer control of the contract to a newOwner. * @param newOwner The address to transfer ownership to. */ function transferOwnership(address newOwner) public onlyOwner { require(newOwner != address(0)); OwnershipTransferred(owner, newOwner); owner = newOwner; } } contract Pausable is Ownable { event Pause(); event Unpause(); bool public paused = false; /** * @dev Modifier to make a function callable only when the contract is not paused. */ modifier whenNotPaused() { require(!paused); _; } /** * @dev Modifier to make a function callable only when the contract is paused. */ modifier whenPaused() { require(paused); _; } /** * @dev called by the owner to pause, triggers stopped state */ function pause() onlyOwner whenNotPaused public { paused = true; Pause(); } /** * @dev called by the owner to unpause, returns to normal state */ function unpause() onlyOwner whenPaused public { paused = false; Unpause(); } } contract ERC20Basic { uint256 public totalSupply; function balanceOf(address who) public view returns (uint256); function transfer(address to, uint256 value) public returns (bool); event Transfer(address indexed from, address indexed to, uint256 value); } contract BasicToken is ERC20Basic { using SafeMath for uint256; mapping(address => uint256) balances; /** * @dev transfer token for a specified address * @param _to The address to transfer to. * @param _value The amount to be transferred. */ function transfer(address _to, uint256 _value) public returns (bool) { require(_to != address(0)); require(_value <= balances[msg.sender]); // SafeMath.sub will throw if there is not enough balance. balances[msg.sender] = balances[msg.sender].sub(_value); balances[_to] = balances[_to].add(_value); Transfer(msg.sender, _to, _value); return true; } /** * @dev Gets the balance of the specified address. * @param _owner The address to query the the balance of. * @return An uint256 representing the amount owned by the passed address. */ function balanceOf(address _owner) public view returns (uint256 balance) { return balances[_owner]; } } contract ERC20 is ERC20Basic { function allowance(address owner, address spender) public view returns (uint256); function transferFrom(address from, address to, uint256 value) public returns (bool); function approve(address spender, uint256 value) public returns (bool); event Approval(address indexed owner, address indexed spender, uint256 value); } contract StandardToken is ERC20, BasicToken { mapping (address => mapping (address => uint256)) internal allowed; /** * @dev Transfer tokens from one address to another * @param _from address The address which you want to send tokens from * @param _to address The address which you want to transfer to * @param _value uint256 the amount of tokens to be transferred */ function transferFrom(address _from, address _to, uint256 _value) public returns (bool) { require(_to != address(0)); require(_value <= balances[_from]); require(_value <= allowed[_from][msg.sender]); balances[_from] = balances[_from].sub(_value); balances[_to] = balances[_to].add(_value); allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value); Transfer(_from, _to, _value); return true; } /** * @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender. * * Beware that changing an allowance with this method brings the risk that someone may use both the old * and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this * race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * @param _spender The address which will spend the funds. * @param _value The amount of tokens to be spent. */ function approve(address _spender, uint256 _value) public returns (bool) { allowed[msg.sender][_spender] = _value; Approval(msg.sender, _spender, _value); return true; } /** * @dev Function to check the amount of tokens that an owner allowed to a spender. * @param _owner address The address which owns the funds. * @param _spender address The address which will spend the funds. * @return A uint256 specifying the amount of tokens still available for the spender. */ function allowance(address _owner, address _spender) public view returns (uint256) { return allowed[_owner][_spender]; } /** * approve should be called when allowed[_spender] == 0. To increment * allowed value is better to use this function to avoid 2 calls (and wait until * the first transaction is mined) * From MonolithDAO Token.sol */ function increaseApproval(address _spender, uint _addedValue) public returns (bool) { allowed[msg.sender][_spender] = allowed[msg.sender][_spender].add(_addedValue); Approval(msg.sender, _spender, allowed[msg.sender][_spender]); return true; } function decreaseApproval(address _spender, uint _subtractedValue) public returns (bool) { uint oldValue = allowed[msg.sender][_spender]; if (_subtractedValue > oldValue) { allowed[msg.sender][_spender] = 0; } else { allowed[msg.sender][_spender] = oldValue.sub(_subtractedValue); } Approval(msg.sender, _spender, allowed[msg.sender][_spender]); return true; } } contract BurnableToken is StandardToken { event Burn(address indexed burner, uint256 value); /** * @dev Burns a specific amount of tokens. * @param _value The amount of token to be burned. */ function burn(uint256 _value) public { require(_value > 0); require(_value <= balances[msg.sender]); // no need to require value <= totalSupply, since that would imply the // sender's balance is greater than the totalSupply, which *should* be an assertion failure address burner = msg.sender; balances[burner] = balances[burner].sub(_value); totalSupply = totalSupply.sub(_value); Burn(burner, _value); } } contract PausableToken is StandardToken, Pausable { function transfer(address _to, uint256 _value) public whenNotPaused returns (bool) { return super.transfer(_to, _value); } function transferFrom(address _from, address _to, uint256 _value) public whenNotPaused returns (bool) { return super.transferFrom(_from, _to, _value); } function approve(address _spender, uint256 _value) public whenNotPaused returns (bool) { return super.approve(_spender, _value); } function increaseApproval(address _spender, uint _addedValue) public whenNotPaused returns (bool success) { return super.increaseApproval(_spender, _addedValue); } function decreaseApproval(address _spender, uint _subtractedValue) public whenNotPaused returns (bool success) { return super.decreaseApproval(_spender, _subtractedValue); } } contract RepublicToken is PausableToken, BurnableToken { string public constant name = "Republic Token"; string public constant symbol = "REN"; uint8 public constant decimals = 18; uint256 public constant INITIAL_SUPPLY = 1000000000 * 10**uint256(decimals); /** * @dev RepublicToken Constructor */ function RepublicToken() public { totalSupply = INITIAL_SUPPLY; balances[msg.sender] = INITIAL_SUPPLY; } function transferTokens(address beneficiary, uint256 amount) public onlyOwner returns (bool) { require(amount > 0); balances[owner] = balances[owner].sub(amount); balances[beneficiary] = balances[beneficiary].add(amount); Transfer(owner, beneficiary, amount); return true; } }
We recommend using flattened code. This is necessary if your code utilizes a library or inherits dependencies. Use the
POA solidity flattener or the
truffle flattener
.
Try to fetch constructor arguments automatically
No
Yes
ABI-encoded Constructor Arguments (if required by the contract)
Add arguments in
ABI hex encoded form
. Constructor arguments are written right to left, and will be found at the end of the input created bytecode. They may also be
parsed here.
Add Contract Libraries
Contract Libraries
Library 1 Name
A library name called in the .sol file. Multiple libraries (up to 10) may be added for each contract. Click the Add Library button to add an additional one.
Library 1 Address
The 0x library address. This can be found in the generated json file or Truffle output (if using truffle).
Library 2 Name
Library 2 Address
Library 3 Name
Library 3 Address
Library 4 Name
Library 4 Address
Library 5 Name
Library 5 Address
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Library 6 Address
Library 7 Name
Library 7 Address
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Library 8 Address
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Library 9 Address
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Library 10 Address
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