ERC-20
Overview
Max Total Supply
100,000,000 OIL
Holders
1,805 ( -24.321%)
Market
Price
$0.04 @ 0.000017 ETH (-0.57%)
Onchain Market Cap
$4,328,001.17
Circulating Supply Market Cap
$0.00
Other Info
Token Contract (WITH 18 Decimals)
Balance
579.757126566344804523 OILValue
$25.09 ( ~0.00994972943342645 Eth) [0.0006%]Loading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
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Contract Name:
OilerToken
Compiler Version
v0.5.12+commit.7709ece9
Optimization Enabled:
Yes with 999999 runs
Other Settings:
default evmVersion, Audited
Contract Source Code (Solidity Standard Json-Input format)Audit Report
pragma solidity 0.5.12; import "openzeppelin-solidity/contracts/utils/Address.sol"; import "openzeppelin-solidity/contracts/ownership/Ownable.sol"; import "openzeppelin-solidity/contracts/token/ERC20/SafeERC20.sol"; import "./ERC20Permittable.sol"; import "./Sacrifice.sol"; import "../IDistribution.sol"; // This is Vesting token // // We used xDAI vesting implementation: // https://github.com/xdaichain/stake-token/blob/master/contracts/Token/ERC677BridgeToken.sol // // Stripping it of any Bridges and other stuff contract OilerToken is Ownable, ERC20Permittable { using SafeERC20 for ERC20; using Address for address; /// @dev Distribution contract address. address public distributionAddress; /// @dev The PrivateOffering contract address. address public privateOfferingDistributionAddress; /// @dev The AdvisorsReward contract address. address public advisorsRewardDistributionAddress; /// @dev Mint event. /// @param to To address. /// @param amount Minted value. event Mint(address indexed to, uint256 amount); /// @dev Modified Transfer event with custom data. /// @param from From address. /// @param to To address. /// @param value Transferred value. /// @param data Custom data to call after transfer. event Transfer(address indexed from, address indexed to, uint256 value, bytes data); /// @dev Emits if custom call after transfer fails. /// @param from From address. /// @param to To address. /// @param value Transferred value. event ContractFallbackCallFailed(address from, address to, uint256 value); /// @dev Checks that the recipient address is valid. /// @param _recipient Recipient address. modifier validRecipient(address _recipient) { require(_recipient != address(0) && _recipient != address(this), "not a valid recipient"); _; } /// @dev Creates a token and mints the whole supply for the Distribution contract. /// @param _name Token name. /// @param _symbol Token symbol. /// @param _distributionAddress The address of the deployed Distribution contract. /// @param _privateOfferingDistributionAddress The address of the PrivateOffering contract. /// @param _advisorsRewardDistributionAddress The address of the AdvisorsReward contract. constructor( string memory _name, string memory _symbol, address _distributionAddress, address _privateOfferingDistributionAddress, address _advisorsRewardDistributionAddress ) ERC20Permittable(_name, _symbol, 18) public { require( _distributionAddress.isContract() && _privateOfferingDistributionAddress.isContract() && _advisorsRewardDistributionAddress.isContract(), "not a contract address" ); uint256 supply = IDistribution(_distributionAddress).supply(); require(supply > 0, "the supply must be more than 0"); _mint(_distributionAddress, supply); distributionAddress = _distributionAddress; privateOfferingDistributionAddress = _privateOfferingDistributionAddress; advisorsRewardDistributionAddress = _advisorsRewardDistributionAddress; emit Mint(_distributionAddress, supply); } /// @dev Extends transfer method with callback. /// @param _to The address of the recipient. /// @param _value The value to transfer. /// @param _data Custom data. /// @return Success status. function transferAndCall( address _to, uint256 _value, bytes calldata _data ) external validRecipient(_to) returns (bool) { _superTransfer(_to, _value); emit Transfer(msg.sender, _to, _value, _data); if (_to.isContract()) { require(_contractFallback(msg.sender, _to, _value, _data), "contract call failed"); } return true; } /// @dev Extends transfer method with event when the callback failed. /// @param _to The address of the recipient. /// @param _value The value to transfer. /// @return Success status. function transfer(address _to, uint256 _value) public returns (bool) { _superTransfer(_to, _value); _callAfterTransfer(msg.sender, _to, _value); return true; } /// @dev This is a copy of `transfer` function which can only be called by distribution contracts. /// Made to get rid of `onTokenTransfer` calling to save gas when distributing tokens. /// @param _to The address of the recipient. /// @param _value The value to transfer. /// @return Success status. function transferDistribution(address _to, uint256 _value) public returns (bool) { require( msg.sender == distributionAddress || msg.sender == privateOfferingDistributionAddress || msg.sender == advisorsRewardDistributionAddress, "wrong sender" ); _superTransfer(_to, _value); return true; } /// @dev Extends transferFrom method with event when the callback failed. /// @param _from The address of the sender. /// @param _to The address of the recipient. /// @param _value The value to transfer. /// @return Success status. function transferFrom(address _from, address _to, uint256 _value) public returns (bool) { _superTransferFrom(_from, _to, _value); _callAfterTransfer(_from, _to, _value); return true; } /// @dev If someone sent eth/tokens to the contract mistakenly then the owner can send them back. /// @param _token The token address to transfer. /// @param _to The address of the recipient. function claimTokens(address _token, address payable _to) public onlyOwner validRecipient(_to) { if (_token == address(0)) { uint256 value = address(this).balance; if (!_to.send(value)) { // solium-disable-line security/no-send // We use the `Sacrifice` trick to be sure the coins can be 100% sent to the receiver. // Otherwise, if the receiver is a contract which has a revert in its fallback function, // the sending will fail. (new Sacrifice).value(value)(_to); } } else { ERC20 token = ERC20(_token); uint256 balance = token.balanceOf(address(this)); token.safeTransfer(_to, balance); } } /// @dev The removed implementation of the ownership renouncing. function renounceOwnership() public onlyOwner { revert("not implemented"); } /// @dev Calls transfer method and reverts if it fails. /// @param _to The address of the recipient. /// @param _value The value to transfer. function _superTransfer(address _to, uint256 _value) internal { bool success; if ( msg.sender == distributionAddress || msg.sender == privateOfferingDistributionAddress || msg.sender == advisorsRewardDistributionAddress ) { // Allow sending tokens to `address(0)` by // Distribution, PrivateOffering, or AdvisorsReward contract // since `super.transfer` doesn't allow doing that. // This is needed when the `transferDistribution` function // is called by Distribution, PrivateOffering, AdvisorsReward contract // to send tokens to `address(0)`. // See `Distribution.preInitialize`, `MultipleDistribution.burn` functions. _balances[msg.sender] = _balances[msg.sender].sub(_value); _balances[_to] = _balances[_to].add(_value); emit Transfer(msg.sender, _to, _value); success = true; } else { success = super.transfer(_to, _value); } require(success, "transfer failed"); } /// @dev Calls transferFrom method and reverts if it fails. /// @param _from The address of the sender. /// @param _to The address of the recipient. /// @param _value The value to transfer. function _superTransferFrom(address _from, address _to, uint256 _value) internal { bool success = super.transferFrom(_from, _to, _value); require(success, "transfer failed"); } /// @dev Used by the `transfer` and `transferFrom` functions. /// In case the recipient is a contract, tries to call its `onTokenTransfer` function. /// Reverts if `onTokenTransfer` fails and the recipient is a bridge/distribution contract. /// Emits an event if `onTokenTransfer` fails and the recipient is not a bridge/distribution contract. /// Needed for reverting transfer to a bridge when the bridge doesn't accept tokens due to daily limitations, /// and to revert transfer to a distribution contract (Distribution or MultipleDistribution) /// if the contract doesn't accept tokens due to its limitations defined in `onTokenTransfer` function. /// @param _from The address of the sender. /// @param _to The address of the recipient. /// @param _value The transferred value. function _callAfterTransfer(address _from, address _to, uint256 _value) internal { if (_to.isContract() && !_contractFallback(_from, _to, _value, new bytes(0))) { require(_to != distributionAddress, "you can't transfer to Distribution contract"); require(_to != privateOfferingDistributionAddress, "you can't transfer to PrivateOffering contract"); require(_to != advisorsRewardDistributionAddress, "you can't transfer to AdvisorsReward contract"); emit ContractFallbackCallFailed(_from, _to, _value); } } /// @dev Makes a callback after the transfer of tokens. /// @param _from The address of the sender. /// @param _to The address of the recipient. /// @param _value The transferred value. /// @param _data Custom data. /// @return Success status. function _contractFallback( address _from, address _to, uint256 _value, bytes memory _data ) private returns (bool) { string memory signature = "onTokenTransfer(address,uint256,bytes)"; // solium-disable-next-line security/no-low-level-calls (bool success, ) = _to.call(abi.encodeWithSignature(signature, _from, _value, _data)); return success; } }
pragma solidity 0.5.12; interface IDistribution { function isInitialized() external view returns (bool); function distributionStartTimestamp() external view returns (uint256); function supply() external view returns(uint256); function poolAddress(uint8) external view returns(address); }
pragma solidity 0.5.12; import "openzeppelin-solidity/contracts/token/ERC20/IERC20.sol"; import "openzeppelin-solidity/contracts/math/SafeMath.sol"; /** * @dev Implementation of the `IERC20` interface. * * This implementation was taken from * https://github.com/OpenZeppelin/openzeppelin-contracts/blob/v2.3.0/contracts/token/ERC20/ERC20.sol * This differs from the original one only in the definition for the `_balances` * mapping: we made it `internal` instead of `private` since we use the `_balances` * in the `ERC677BridgeToken` child contract to be able to transfer tokens to address(0) * (see its `_superTransfer` function). The original OpenZeppelin implementation * doesn't allow transferring to address(0). * * This implementation is agnostic to the way tokens are created. This means * that a supply mechanism has to be added in a derived contract using `_mint`. * For a generic mechanism see `ERC20Mintable`. * * *For a detailed writeup see our guide [How to implement supply * mechanisms](https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226).* * * We have followed general OpenZeppelin guidelines: functions revert instead * of returning `false` on failure. This behavior is nonetheless conventional * and does not conflict with the expectations of ERC20 applications. * * Additionally, an `Approval` event is emitted on calls to `transferFrom`. * This allows applications to reconstruct the allowance for all accounts just * by listening to said events. Other implementations of the EIP may not emit * these events, as it isn't required by the specification. * * Finally, the non-standard `decreaseAllowance` and `increaseAllowance` * functions have been added to mitigate the well-known issues around setting * allowances. See `IERC20.approve`. */ contract ERC20 is IERC20 { using SafeMath for uint256; mapping (address => uint256) internal _balances; // CHANGED: not private to write a custom transfer method mapping (address => mapping (address => uint256)) private _allowances; uint256 private _totalSupply; /** * @dev See `IERC20.totalSupply`. */ function totalSupply() public view returns (uint256) { return _totalSupply; } /** * @dev See `IERC20.balanceOf`. */ function balanceOf(address account) public view returns (uint256) { return _balances[account]; } /** * @dev See `IERC20.transfer`. * * Requirements: * * - `recipient` cannot be the zero address. * - the caller must have a balance of at least `amount`. */ function transfer(address recipient, uint256 amount) public returns (bool) { _transfer(msg.sender, recipient, amount); return true; } /** * @dev See `IERC20.allowance`. */ function allowance(address owner, address spender) public view returns (uint256) { return _allowances[owner][spender]; } /** * @dev See `IERC20.approve`. * * Requirements: * * - `spender` cannot be the zero address. */ function approve(address spender, uint256 value) public returns (bool) { _approve(msg.sender, spender, value); return true; } /** * @dev See `IERC20.transferFrom`. * * Emits an `Approval` event indicating the updated allowance. This is not * required by the EIP. See the note at the beginning of `ERC20`; * * Requirements: * - `sender` and `recipient` cannot be the zero address. * - `sender` must have a balance of at least `value`. * - the caller must have allowance for `sender`'s tokens of at least * `amount`. */ function transferFrom(address sender, address recipient, uint256 amount) public returns (bool) { _transfer(sender, recipient, amount); _approve(sender, msg.sender, _allowances[sender][msg.sender].sub(amount)); return true; } /** * @dev Atomically increases the allowance granted to `spender` by the caller. * * This is an alternative to `approve` that can be used as a mitigation for * problems described in `IERC20.approve`. * * Emits an `Approval` event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. */ function increaseAllowance(address spender, uint256 addedValue) public returns (bool) { _approve(msg.sender, spender, _allowances[msg.sender][spender].add(addedValue)); return true; } /** * @dev Atomically decreases the allowance granted to `spender` by the caller. * * This is an alternative to `approve` that can be used as a mitigation for * problems described in `IERC20.approve`. * * Emits an `Approval` event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. * - `spender` must have allowance for the caller of at least * `subtractedValue`. */ function decreaseAllowance(address spender, uint256 subtractedValue) public returns (bool) { _approve(msg.sender, spender, _allowances[msg.sender][spender].sub(subtractedValue)); return true; } /** * @dev Moves tokens `amount` from `sender` to `recipient`. * * This is internal function is equivalent to `transfer`, and can be used to * e.g. implement automatic token fees, slashing mechanisms, etc. * * Emits a `Transfer` event. * * Requirements: * * - `sender` cannot be the zero address. * - `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. */ function _transfer(address sender, address recipient, uint256 amount) internal { require(sender != address(0), "ERC20: transfer from the zero address"); require(recipient != address(0), "ERC20: transfer to the zero address"); _balances[sender] = _balances[sender].sub(amount); _balances[recipient] = _balances[recipient].add(amount); emit Transfer(sender, recipient, amount); } /** @dev Creates `amount` tokens and assigns them to `account`, increasing * the total supply. * * Emits a `Transfer` event with `from` set to the zero address. * * Requirements * * - `to` cannot be the zero address. */ function _mint(address account, uint256 amount) internal { require(account != address(0), "ERC20: mint to the zero address"); _totalSupply = _totalSupply.add(amount); _balances[account] = _balances[account].add(amount); emit Transfer(address(0), account, amount); } /** * @dev Destoys `amount` tokens from `account`, reducing the * total supply. * * Emits a `Transfer` event with `to` set to the zero address. * * Requirements * * - `account` cannot be the zero address. * - `account` must have at least `amount` tokens. */ function _burn(address account, uint256 value) internal { require(account != address(0), "ERC20: burn from the zero address"); _totalSupply = _totalSupply.sub(value); _balances[account] = _balances[account].sub(value); emit Transfer(account, address(0), value); } /** * @dev Sets `amount` as the allowance of `spender` over the `owner`s tokens. * * This is internal function is equivalent to `approve`, and can be used to * e.g. set automatic allowances for certain subsystems, etc. * * Emits an `Approval` event. * * Requirements: * * - `owner` cannot be the zero address. * - `spender` cannot be the zero address. */ function _approve(address owner, address spender, uint256 value) internal { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = value; emit Approval(owner, spender, value); } /** * @dev Destoys `amount` tokens from `account`.`amount` is then deducted * from the caller's allowance. * * See `_burn` and `_approve`. */ function _burnFrom(address account, uint256 amount) internal { _burn(account, amount); _approve(account, msg.sender, _allowances[account][msg.sender].sub(amount)); } }
pragma solidity 0.5.12; import "./ERC20.sol"; import "openzeppelin-solidity/contracts/token/ERC20/ERC20Detailed.sol"; /** * @title ERC20Permittable * @dev This is ERC20 contract extended by the `permit` function (see EIP712). */ contract ERC20Permittable is ERC20, ERC20Detailed { string public constant version = "1"; // EIP712 niceties bytes32 public DOMAIN_SEPARATOR; // bytes32 public constant PERMIT_TYPEHASH = keccak256("Permit(address holder,address spender,uint256 nonce,uint256 expiry,bool allowed)"); bytes32 public constant PERMIT_TYPEHASH = 0xea2aa0a1be11a07ed86d755c93467f4f82362b452371d1ba94d1715123511acb; mapping(address => uint256) public nonces; mapping(address => mapping(address => uint256)) public expirations; constructor( string memory _name, string memory _symbol, uint8 _decimals ) ERC20Detailed(_name, _symbol, _decimals) public { uint256 chainId = 0; assembly { chainId := chainid } DOMAIN_SEPARATOR = keccak256(abi.encode( keccak256("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)"), keccak256(bytes(_name)), keccak256(bytes(version)), chainId, address(this) )); } /// @dev transferFrom in this contract works in a slightly different form than the generic /// transferFrom function. This contract allows for "unlimited approval". /// Should the user approve an address for the maximum uint256 value, /// then that address will have unlimited approval until told otherwise. /// @param _sender The address of the sender. /// @param _recipient The address of the recipient. /// @param _amount The value to transfer. /// @return Success status. function transferFrom(address _sender, address _recipient, uint256 _amount) public returns (bool) { _transfer(_sender, _recipient, _amount); if (_sender != msg.sender) { uint256 allowedAmount = allowance(_sender, msg.sender); if (allowedAmount != uint256(-1)) { // If allowance is limited, adjust it. // In this case `transferFrom` works like the generic _approve(_sender, msg.sender, allowedAmount.sub(_amount)); } else { // If allowance is unlimited by `permit`, `approve`, or `increaseAllowance` // function, don't adjust it. But the expiration date must be empty or in the future. // Note that the expiration timestamp can have a 900-second error: // https://github.com/ethereum/wiki/blob/c02254611f218f43cbb07517ca8e5d00fd6d6d75/Block-Protocol-2.0.md require( // solium-disable-next-line security/no-block-members expirations[_sender][msg.sender] == 0 || expirations[_sender][msg.sender] >= _now(), "expiry is in the past" ); } } else { // If `_sender` is `msg.sender`, // the function works just like `transfer()` } return true; } /// @dev An alias for `transfer` function. /// @param _to The address of the recipient. /// @param _amount The value to transfer. function push(address _to, uint256 _amount) public { transferFrom(msg.sender, _to, _amount); } /// @dev Makes a request to transfer the specified amount /// from the specified address to the caller's address. /// @param _from The address of the holder. /// @param _amount The value to transfer. function pull(address _from, uint256 _amount) public { transferFrom(_from, msg.sender, _amount); } /// @dev An alias for `transferFrom` function. /// @param _from The address of the sender. /// @param _to The address of the recipient. /// @param _amount The value to transfer. function move(address _from, address _to, uint256 _amount) public { transferFrom(_from, _to, _amount); } /// @dev Allows to spend holder's unlimited amount by the specified spender. /// The function can be called by anyone, but requires having allowance parameters /// signed by the holder according to EIP712. /// @param _holder The holder's address. /// @param _spender The spender's address. /// @param _nonce The nonce taken from `nonces(_holder)` public getter. /// @param _expiry The allowance expiration date (unix timestamp in UTC). /// Can be zero for no expiration. Forced to zero if `_allowed` is `false`. /// @param _allowed True to enable unlimited allowance for the spender by the holder. False to disable. /// @param _v A final byte of signature (ECDSA component). /// @param _r The first 32 bytes of signature (ECDSA component). /// @param _s The second 32 bytes of signature (ECDSA component). function permit( address _holder, address _spender, uint256 _nonce, uint256 _expiry, bool _allowed, uint8 _v, bytes32 _r, bytes32 _s ) external { require(_expiry == 0 || _now() <= _expiry, "invalid expiry"); bytes32 digest = keccak256(abi.encodePacked( "\x19\x01", DOMAIN_SEPARATOR, keccak256(abi.encode( PERMIT_TYPEHASH, _holder, _spender, _nonce, _expiry, _allowed )) )); require(_holder == ecrecover(digest, _v, _r, _s), "invalid signature or parameters"); require(_nonce == nonces[_holder]++, "invalid nonce"); uint256 amount = _allowed ? uint256(-1) : 0; _approve(_holder, _spender, amount); expirations[_holder][_spender] = _allowed ? _expiry : 0; } function _now() internal view returns(uint256) { return now; } }
pragma solidity 0.5.12; contract Sacrifice { constructor(address payable _recipient) public payable { selfdestruct(_recipient); } }
pragma solidity ^0.5.0; /** * @dev Wrappers over Solidity's arithmetic operations with added overflow * checks. * * Arithmetic operations in Solidity wrap on overflow. This can easily result * in bugs, because programmers usually assume that an overflow raises an * error, which is the standard behavior in high level programming languages. * `SafeMath` restores this intuition by reverting the transaction when an * operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. */ library SafeMath { /** * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * - Addition cannot overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /** * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { require(b <= a, "SafeMath: subtraction overflow"); uint256 c = a - b; return c; } /** * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `*` operator. * * Requirements: * - Multiplication cannot overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-solidity/pull/522 if (a == 0) { return 0; } uint256 c = a * b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the integer division of two unsigned integers. Reverts on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * - The divisor cannot be zero. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { // Solidity only automatically asserts when dividing by 0 require(b > 0, "SafeMath: division by zero"); uint256 c = a / b; // assert(a == b * c + a % b); // There is no case in which this doesn't hold return c; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b) internal pure returns (uint256) { require(b != 0, "SafeMath: modulo by zero"); return a % b; } }
pragma solidity ^0.5.0; /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be aplied to your functions to restrict their use to * the owner. */ contract Ownable { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ constructor () internal { _owner = msg.sender; emit OwnershipTransferred(address(0), _owner); } /** * @dev Returns the address of the current owner. */ function owner() public view returns (address) { return _owner; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(isOwner(), "Ownable: caller is not the owner"); _; } /** * @dev Returns true if the caller is the current owner. */ function isOwner() public view returns (bool) { return msg.sender == _owner; } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * > Note: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = address(0); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public onlyOwner { _transferOwnership(newOwner); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). */ function _transferOwnership(address newOwner) internal { require(newOwner != address(0), "Ownable: new owner is the zero address"); emit OwnershipTransferred(_owner, newOwner); _owner = newOwner; } }
pragma solidity ^0.5.0; import "./IERC20.sol"; /** * @dev Optional functions from the ERC20 standard. */ contract ERC20Detailed is IERC20 { string private _name; string private _symbol; uint8 private _decimals; /** * @dev Sets the values for `name`, `symbol`, and `decimals`. All three of * these values are immutable: they can only be set once during * construction. */ constructor (string memory name, string memory symbol, uint8 decimals) public { _name = name; _symbol = symbol; _decimals = decimals; } /** * @dev Returns the name of the token. */ function name() public view returns (string memory) { return _name; } /** * @dev Returns the symbol of the token, usually a shorter version of the * name. */ function symbol() public view returns (string memory) { return _symbol; } /** * @dev Returns the number of decimals used to get its user representation. * For example, if `decimals` equals `2`, a balance of `505` tokens should * be displayed to a user as `5,05` (`505 / 10 ** 2`). * * Tokens usually opt for a value of 18, imitating the relationship between * Ether and Wei. * * > Note that this information is only used for _display_ purposes: it in * no way affects any of the arithmetic of the contract, including * `IERC20.balanceOf` and `IERC20.transfer`. */ function decimals() public view returns (uint8) { return _decimals; } }
pragma solidity ^0.5.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. Does not include * the optional functions; to access them see `ERC20Detailed`. */ interface IERC20 { /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a `Transfer` event. */ function transfer(address recipient, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through `transferFrom`. This is * zero by default. * * This value changes when `approve` or `transferFrom` are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * > 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 * * Emits an `Approval` event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a `Transfer` event. */ function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to `approve`. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); }
pragma solidity ^0.5.0; import "./IERC20.sol"; import "../../math/SafeMath.sol"; import "../../utils/Address.sol"; /** * @title SafeERC20 * @dev Wrappers around ERC20 operations that throw on failure (when the token * contract returns false). Tokens that return no value (and instead revert or * throw on failure) are also supported, non-reverting calls are assumed to be * successful. * To use this library you can add a `using SafeERC20 for ERC20;` statement to your contract, * which allows you to call the safe operations as `token.safeTransfer(...)`, etc. */ library SafeERC20 { using SafeMath for uint256; using Address for address; function safeTransfer(IERC20 token, address to, uint256 value) internal { callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value)); } function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal { callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value)); } function safeApprove(IERC20 token, address spender, uint256 value) internal { // safeApprove should only be called when setting an initial allowance, // or when resetting it to zero. To increase and decrease it, use // 'safeIncreaseAllowance' and 'safeDecreaseAllowance' // solhint-disable-next-line max-line-length require((value == 0) || (token.allowance(address(this), spender) == 0), "SafeERC20: approve from non-zero to non-zero allowance" ); callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value)); } function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).add(value); callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).sub(value); callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } /** * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement * on the return value: the return value is optional (but if data is returned, it must not be false). * @param token The token targeted by the call. * @param data The call data (encoded using abi.encode or one of its variants). */ function callOptionalReturn(IERC20 token, bytes memory data) private { // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since // we're implementing it ourselves. // A Solidity high level call has three parts: // 1. The target address is checked to verify it contains contract code // 2. The call itself is made, and success asserted // 3. The return value is decoded, which in turn checks the size of the returned data. // solhint-disable-next-line max-line-length require(address(token).isContract(), "SafeERC20: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = address(token).call(data); require(success, "SafeERC20: low-level call failed"); if (returndata.length > 0) { // Return data is optional // solhint-disable-next-line max-line-length require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed"); } } }
pragma solidity ^0.5.0; /** * @dev Collection of functions related to the address type, */ library Address { /** * @dev Returns true if `account` is a contract. * * This test is non-exhaustive, and there may be false-negatives: during the * execution of a contract's constructor, its address will be reported as * not containing a contract. * * > It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. */ function isContract(address account) internal view returns (bool) { // This method relies in extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; // solhint-disable-next-line no-inline-assembly assembly { size := extcodesize(account) } return size > 0; } }
{ "remappings": [], "optimizer": { "enabled": true, "runs": 999999 }, "evmVersion": "istanbul", "libraries": {}, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "abi" ] } } }
Contract Security Audit
- Chainsulting - May 5th, 2021 - Security Audit Report
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payable","name":"_to","type":"address"}],"name":"claimTokens","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"decimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"subtractedValue","type":"uint256"}],"name":"decreaseAllowance","outputs":[{"internalType":"bool","name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"distributionAddress","outputs":[{"internalType":"address","name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"address","name":"","type":"address"}],"name":"expirations","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"addedValue","type":"uint256"}],"name":"increaseAllowance","outputs":[{"internalType":"bool","name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"isOwner","outputs":[{"internalType":"bool","name":"","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"_from","type":"address"},{"internalType":"address","name":"_to","type":"address"},{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"move","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"nonces","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"_holder","type":"address"},{"internalType":"address","name":"_spender","type":"address"},{"internalType":"uint256","name":"_nonce","type":"uint256"},{"internalType":"uint256","name":"_expiry","type":"uint256"},{"internalType":"bool","name":"_allowed","type":"bool"},{"internalType":"uint8","name":"_v","type":"uint8"},{"internalType":"bytes32","name":"_r","type":"bytes32"},{"internalType":"bytes32","name":"_s","type":"bytes32"}],"name":"permit","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"privateOfferingDistributionAddress","outputs":[{"internalType":"address","name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"_from","type":"address"},{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"pull","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"_to","type":"address"},{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"push","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[],"name":"renounceOwnership","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"_to","type":"address"},{"internalType":"uint256","name":"_value","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"_to","type":"address"},{"internalType":"uint256","name":"_value","type":"uint256"},{"internalType":"bytes","name":"_data","type":"bytes"}],"name":"transferAndCall","outputs":[{"internalType":"bool","name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"_to","type":"address"},{"internalType":"uint256","name":"_value","type":"uint256"}],"name":"transferDistribution","outputs":[{"internalType":"bool","name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"_from","type":"address"},{"internalType":"address","name":"_to","type":"address"},{"internalType":"uint256","name":"_value","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"version","outputs":[{"internalType":"string","name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"}]
Contract Creation Code
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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] : _name (string): Oiler
Arg [1] : _symbol (string): OIL
Arg [2] : _distributionAddress (address): 0x5A3E535C93558bD89287Aa4ef3752FD726517673
Arg [3] : _privateOfferingDistributionAddress (address): 0x1d041E3A90da2240Ba298B85bcb6c32275e42B99
Arg [4] : _advisorsRewardDistributionAddress (address): 0xa27342A82b0bfeE68e366Fd84FC517BDDEab4aE4
-----Encoded View---------------
9 Constructor Arguments found :
Arg [0] : 00000000000000000000000000000000000000000000000000000000000000a0
Arg [1] : 00000000000000000000000000000000000000000000000000000000000000e0
Arg [2] : 0000000000000000000000005a3e535c93558bd89287aa4ef3752fd726517673
Arg [3] : 0000000000000000000000001d041e3a90da2240ba298b85bcb6c32275e42b99
Arg [4] : 000000000000000000000000a27342a82b0bfee68e366fd84fc517bddeab4ae4
Arg [5] : 0000000000000000000000000000000000000000000000000000000000000005
Arg [6] : 4f696c6572000000000000000000000000000000000000000000000000000000
Arg [7] : 0000000000000000000000000000000000000000000000000000000000000003
Arg [8] : 4f494c0000000000000000000000000000000000000000000000000000000000
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