Feature Tip: Add private address tag to any address under My Name Tag !
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ETH Balance
0 ETH
Eth Value
$0.00More Info
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Latest 25 from a total of 20,952 transactions
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Burn | 17008162 | 665 days ago | IN | 0 ETH | 0.00532517 | ||||
Burn | 16999917 | 666 days ago | IN | 0 ETH | 0.00346798 | ||||
Burn | 16997746 | 666 days ago | IN | 0 ETH | 0.00526182 | ||||
Burn | 16976216 | 669 days ago | IN | 0 ETH | 0.00848075 | ||||
Burn | 16972725 | 670 days ago | IN | 0 ETH | 0.00360491 | ||||
Burn | 16971783 | 670 days ago | IN | 0 ETH | 0.003809 | ||||
Burn | 16971674 | 670 days ago | IN | 0 ETH | 0.00435613 | ||||
Burn | 16968368 | 670 days ago | IN | 0 ETH | 0.00682697 | ||||
Burn | 16966552 | 671 days ago | IN | 0 ETH | 0.00355412 | ||||
Burn | 16965783 | 671 days ago | IN | 0 ETH | 0.00338569 | ||||
Burn | 16965190 | 671 days ago | IN | 0 ETH | 0.00329341 | ||||
Burn | 16964044 | 671 days ago | IN | 0 ETH | 0.0035824 | ||||
Burn | 16963689 | 671 days ago | IN | 0 ETH | 0.00354431 | ||||
Burn | 16957158 | 672 days ago | IN | 0 ETH | 0.00312475 | ||||
Burn | 16956731 | 672 days ago | IN | 0 ETH | 0.00356947 | ||||
Burn | 16956585 | 672 days ago | IN | 0 ETH | 0.00523731 | ||||
Burn | 16956089 | 672 days ago | IN | 0 ETH | 0.0040574 | ||||
Burn | 16949579 | 673 days ago | IN | 0 ETH | 0.0054855 | ||||
Burn | 16949553 | 673 days ago | IN | 0 ETH | 0.0056554 | ||||
Burn | 16947216 | 673 days ago | IN | 0 ETH | 0.00585479 | ||||
Burn | 16944603 | 674 days ago | IN | 0 ETH | 0.00453459 | ||||
Burn | 16939499 | 674 days ago | IN | 0 ETH | 0.00554376 | ||||
Burn | 16935576 | 675 days ago | IN | 0 ETH | 0.00793021 | ||||
Burn | 16935522 | 675 days ago | IN | 0 ETH | 0.00733204 | ||||
Burn | 16932538 | 675 days ago | IN | 0 ETH | 0.00454977 |
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Contract Source Code Verified (Exact Match)
Contract Name:
BTCGateway
Compiler Version
v0.5.16+commit.9c3226ce
Optimization Enabled:
Yes with 200 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity)
/** *Submitted for verification at Etherscan.io on 2020-03-25 */ /** Deployed by Ren Project, https://renproject.io Commit hash: 9068f80 Repository: https://github.com/renproject/darknode-sol Issues: https://github.com/renproject/darknode-sol/issues Licenses @openzeppelin/contracts: (MIT) https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/LICENSE darknode-sol: (GNU GPL V3) https://github.com/renproject/darknode-sol/blob/master/LICENSE */ pragma solidity 0.5.16; contract Initializable { bool private initialized; bool private initializing; modifier initializer() { require(initializing || isConstructor() || !initialized, "Contract instance has already been initialized"); bool isTopLevelCall = !initializing; if (isTopLevelCall) { initializing = true; initialized = true; } _; if (isTopLevelCall) { initializing = false; } } function isConstructor() private view returns (bool) { address self = address(this); uint256 cs; assembly { cs := extcodesize(self) } return cs == 0; } uint256[50] private ______gap; } library SafeMath { function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } function sub(uint256 a, uint256 b) internal pure returns (uint256) { return sub(a, b, "SafeMath: subtraction overflow"); } function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); uint256 c = a - b; return c; } function mul(uint256 a, uint256 b) internal pure returns (uint256) { if (a == 0) { return 0; } uint256 c = a * b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } function div(uint256 a, uint256 b) internal pure returns (uint256) { return div(a, b, "SafeMath: division by zero"); } function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); uint256 c = a / b; return c; } function mod(uint256 a, uint256 b) internal pure returns (uint256) { return mod(a, b, "SafeMath: modulo by zero"); } function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b != 0, errorMessage); return a % b; } } library ECDSA { function recover(bytes32 hash, bytes memory signature) internal pure returns (address) { if (signature.length != 65) { revert("ECDSA: signature length is invalid"); } bytes32 r; bytes32 s; uint8 v; assembly { r := mload(add(signature, 0x20)) s := mload(add(signature, 0x40)) v := byte(0, mload(add(signature, 0x60))) } if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) { revert("ECDSA: signature.s is in the wrong range"); } if (v != 27 && v != 28) { revert("ECDSA: signature.v is in the wrong range"); } return ecrecover(hash, v, r, s); } function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32) { return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", hash)); } } contract Proxy { function () payable external { _fallback(); } function _implementation() internal view returns (address); function _delegate(address implementation) internal { assembly { calldatacopy(0, 0, calldatasize) let result := delegatecall(gas, implementation, 0, calldatasize, 0, 0) returndatacopy(0, 0, returndatasize) switch result case 0 { revert(0, returndatasize) } default { return(0, returndatasize) } } } function _willFallback() internal { } function _fallback() internal { _willFallback(); _delegate(_implementation()); } } library OpenZeppelinUpgradesAddress { function isContract(address account) internal view returns (bool) { uint256 size; assembly { size := extcodesize(account) } return size > 0; } } contract BaseUpgradeabilityProxy is Proxy { event Upgraded(address indexed implementation); bytes32 internal constant IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc; function _implementation() internal view returns (address impl) { bytes32 slot = IMPLEMENTATION_SLOT; assembly { impl := sload(slot) } } function _upgradeTo(address newImplementation) internal { _setImplementation(newImplementation); emit Upgraded(newImplementation); } function _setImplementation(address newImplementation) internal { require(OpenZeppelinUpgradesAddress.isContract(newImplementation), "Cannot set a proxy implementation to a non-contract address"); bytes32 slot = IMPLEMENTATION_SLOT; assembly { sstore(slot, newImplementation) } } } contract UpgradeabilityProxy is BaseUpgradeabilityProxy { constructor(address _logic, bytes memory _data) public payable { assert(IMPLEMENTATION_SLOT == bytes32(uint256(keccak256('eip1967.proxy.implementation')) - 1)); _setImplementation(_logic); if(_data.length > 0) { (bool success,) = _logic.delegatecall(_data); require(success); } } } contract BaseAdminUpgradeabilityProxy is BaseUpgradeabilityProxy { event AdminChanged(address previousAdmin, address newAdmin); bytes32 internal constant ADMIN_SLOT = 0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103; modifier ifAdmin() { if (msg.sender == _admin()) { _; } else { _fallback(); } } function admin() external ifAdmin returns (address) { return _admin(); } function implementation() external ifAdmin returns (address) { return _implementation(); } function changeAdmin(address newAdmin) external ifAdmin { require(newAdmin != address(0), "Cannot change the admin of a proxy to the zero address"); emit AdminChanged(_admin(), newAdmin); _setAdmin(newAdmin); } function upgradeTo(address newImplementation) external ifAdmin { _upgradeTo(newImplementation); } function upgradeToAndCall(address newImplementation, bytes calldata data) payable external ifAdmin { _upgradeTo(newImplementation); (bool success,) = newImplementation.delegatecall(data); require(success); } function _admin() internal view returns (address adm) { bytes32 slot = ADMIN_SLOT; assembly { adm := sload(slot) } } function _setAdmin(address newAdmin) internal { bytes32 slot = ADMIN_SLOT; assembly { sstore(slot, newAdmin) } } function _willFallback() internal { require(msg.sender != _admin(), "Cannot call fallback function from the proxy admin"); super._willFallback(); } } contract InitializableUpgradeabilityProxy is BaseUpgradeabilityProxy { function initialize(address _logic, bytes memory _data) public payable { require(_implementation() == address(0)); assert(IMPLEMENTATION_SLOT == bytes32(uint256(keccak256('eip1967.proxy.implementation')) - 1)); _setImplementation(_logic); if(_data.length > 0) { (bool success,) = _logic.delegatecall(_data); require(success); } } } contract InitializableAdminUpgradeabilityProxy is BaseAdminUpgradeabilityProxy, InitializableUpgradeabilityProxy { function initialize(address _logic, address _admin, bytes memory _data) public payable { require(_implementation() == address(0)); InitializableUpgradeabilityProxy.initialize(_logic, _data); assert(ADMIN_SLOT == bytes32(uint256(keccak256('eip1967.proxy.admin')) - 1)); _setAdmin(_admin); } } contract Context is Initializable { constructor () internal { } function _msgSender() internal view returns (address payable) { return msg.sender; } function _msgData() internal view returns (bytes memory) { this; return msg.data; } } contract Ownable is Initializable, Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); function initialize(address sender) public initializer { _owner = sender; emit OwnershipTransferred(address(0), _owner); } function owner() public view returns (address) { return _owner; } modifier onlyOwner() { require(isOwner(), "Ownable: caller is not the owner"); _; } function isOwner() public view returns (bool) { return _msgSender() == _owner; } function renounceOwnership() public onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = address(0); } function transferOwnership(address newOwner) public onlyOwner { _transferOwnership(newOwner); } function _transferOwnership(address newOwner) internal { require(newOwner != address(0), "Ownable: new owner is the zero address"); emit OwnershipTransferred(_owner, newOwner); _owner = newOwner; } uint256[50] private ______gap; } contract Claimable is Initializable, Ownable { address public pendingOwner; function initialize(address _nextOwner) public initializer { Ownable.initialize(_nextOwner); } modifier onlyPendingOwner() { require( _msgSender() == pendingOwner, "Claimable: caller is not the pending owner" ); _; } function transferOwnership(address newOwner) public onlyOwner { require( newOwner != owner() && newOwner != pendingOwner, "Claimable: invalid new owner" ); pendingOwner = newOwner; } function claimOwnership() public onlyPendingOwner { _transferOwnership(pendingOwner); delete pendingOwner; } } library String { function fromUint(uint256 _i) internal pure returns (string memory) { if (_i == 0) { return "0"; } uint256 j = _i; uint256 len; while (j != 0) { len++; j /= 10; } bytes memory bstr = new bytes(len); uint256 k = len - 1; while (_i != 0) { bstr[k--] = bytes1(uint8(48 + (_i % 10))); _i /= 10; } return string(bstr); } function fromBytes32(bytes32 _value) internal pure returns (string memory) { bytes memory alphabet = "0123456789abcdef"; bytes memory str = new bytes(32 * 2 + 2); str[0] = "0"; str[1] = "x"; for (uint256 i = 0; i < 32; i++) { str[2 + i * 2] = alphabet[uint256(uint8(_value[i] >> 4))]; str[3 + i * 2] = alphabet[uint256(uint8(_value[i] & 0x0f))]; } return string(str); } function fromAddress(address _addr) internal pure returns (string memory) { bytes32 value = bytes32(uint256(_addr)); bytes memory alphabet = "0123456789abcdef"; bytes memory str = new bytes(20 * 2 + 2); str[0] = "0"; str[1] = "x"; for (uint256 i = 0; i < 20; i++) { str[2 + i * 2] = alphabet[uint256(uint8(value[i + 12] >> 4))]; str[3 + i * 2] = alphabet[uint256(uint8(value[i + 12] & 0x0f))]; } return string(str); } function add8( string memory a, string memory b, string memory c, string memory d, string memory e, string memory f, string memory g, string memory h ) internal pure returns (string memory) { return string(abi.encodePacked(a, b, c, d, e, f, g, h)); } } interface IERC20 { function totalSupply() external view returns (uint256); function balanceOf(address account) external view returns (uint256); function transfer(address recipient, uint256 amount) external returns (bool); function allowance(address owner, address spender) external view returns (uint256); function approve(address spender, uint256 amount) external returns (bool); function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); event Transfer(address indexed from, address indexed to, uint256 value); event Approval(address indexed owner, address indexed spender, uint256 value); } contract ERC20 is Initializable, Context, IERC20 { using SafeMath for uint256; mapping (address => uint256) private _balances; mapping (address => mapping (address => uint256)) private _allowances; uint256 private _totalSupply; function totalSupply() public view returns (uint256) { return _totalSupply; } function balanceOf(address account) public view returns (uint256) { return _balances[account]; } function transfer(address recipient, uint256 amount) public returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } function allowance(address owner, address spender) public view returns (uint256) { return _allowances[owner][spender]; } function approve(address spender, uint256 amount) public returns (bool) { _approve(_msgSender(), spender, amount); return true; } function transferFrom(address sender, address recipient, uint256 amount) public returns (bool) { _transfer(sender, recipient, amount); _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance")); return true; } function increaseAllowance(address spender, uint256 addedValue) public returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue)); return true; } function decreaseAllowance(address spender, uint256 subtractedValue) public returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero")); return true; } 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, "ERC20: transfer amount exceeds balance"); _balances[recipient] = _balances[recipient].add(amount); emit Transfer(sender, recipient, amount); } 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); } function _burn(address account, uint256 amount) internal { require(account != address(0), "ERC20: burn from the zero address"); _balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance"); _totalSupply = _totalSupply.sub(amount); emit Transfer(account, address(0), amount); } function _approve(address owner, address spender, uint256 amount) internal { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } function _burnFrom(address account, uint256 amount) internal { _burn(account, amount); _approve(account, _msgSender(), _allowances[account][_msgSender()].sub(amount, "ERC20: burn amount exceeds allowance")); } uint256[50] private ______gap; } contract ERC20Detailed is Initializable, IERC20 { string private _name; string private _symbol; uint8 private _decimals; function initialize(string memory name, string memory symbol, uint8 decimals) public initializer { _name = name; _symbol = symbol; _decimals = decimals; } function name() public view returns (string memory) { return _name; } function symbol() public view returns (string memory) { return _symbol; } function decimals() public view returns (uint8) { return _decimals; } uint256[50] private ______gap; } library Address { function isContract(address account) internal view returns (bool) { bytes32 codehash; bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470; assembly { codehash := extcodehash(account) } return (codehash != 0x0 && codehash != accountHash); } function toPayable(address account) internal pure returns (address payable) { return address(uint160(account)); } function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call.value(amount)(""); require(success, "Address: unable to send value, recipient may have reverted"); } } 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 { 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, "SafeERC20: decreased allowance below zero"); callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } function callOptionalReturn(IERC20 token, bytes memory data) private { require(address(token).isContract(), "SafeERC20: call to non-contract"); (bool success, bytes memory returndata) = address(token).call(data); require(success, "SafeERC20: low-level call failed"); if (returndata.length > 0) { require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed"); } } } contract CanReclaimTokens is Claimable { using SafeERC20 for ERC20; mapping(address => bool) private recoverableTokensBlacklist; function initialize(address _nextOwner) public initializer { Claimable.initialize(_nextOwner); } function blacklistRecoverableToken(address _token) public onlyOwner { recoverableTokensBlacklist[_token] = true; } function recoverTokens(address _token) external onlyOwner { require( !recoverableTokensBlacklist[_token], "CanReclaimTokens: token is not recoverable" ); if (_token == address(0x0)) { msg.sender.transfer(address(this).balance); } else { ERC20(_token).safeTransfer( msg.sender, ERC20(_token).balanceOf(address(this)) ); } } } contract ERC20WithRate is Initializable, Ownable, ERC20 { using SafeMath for uint256; uint256 public constant _rateScale = 1e18; uint256 internal _rate; event LogRateChanged(uint256 indexed _rate); function initialize(address _nextOwner, uint256 _initialRate) public initializer { Ownable.initialize(_nextOwner); _setRate(_initialRate); } function setExchangeRate(uint256 _nextRate) public onlyOwner { _setRate(_nextRate); } function exchangeRateCurrent() public view returns (uint256) { require(_rate != 0, "ERC20WithRate: rate has not been initialized"); return _rate; } function _setRate(uint256 _nextRate) internal { require(_nextRate > 0, "ERC20WithRate: rate must be greater than zero"); _rate = _nextRate; } function balanceOfUnderlying(address _account) public view returns (uint256) { return toUnderlying(balanceOf(_account)); } function toUnderlying(uint256 _amount) public view returns (uint256) { return _amount.mul(_rate).div(_rateScale); } function fromUnderlying(uint256 _amountUnderlying) public view returns (uint256) { return _amountUnderlying.mul(_rateScale).div(_rate); } } contract ERC20WithPermit is Initializable, ERC20, ERC20Detailed { using SafeMath for uint256; mapping(address => uint256) public nonces; string public version; bytes32 public DOMAIN_SEPARATOR; bytes32 public constant PERMIT_TYPEHASH = 0xea2aa0a1be11a07ed86d755c93467f4f82362b452371d1ba94d1715123511acb; function initialize( uint256 _chainId, string memory _version, string memory _name, string memory _symbol, uint8 _decimals ) public initializer { ERC20Detailed.initialize(_name, _symbol, _decimals); version = _version; DOMAIN_SEPARATOR = keccak256( abi.encode( keccak256( "EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)" ), keccak256(bytes(name())), keccak256(bytes(version)), _chainId, address(this) ) ); } function permit( address holder, address spender, uint256 nonce, uint256 expiry, bool allowed, uint8 v, bytes32 r, bytes32 s ) external { bytes32 digest = keccak256( abi.encodePacked( "\x19\x01", DOMAIN_SEPARATOR, keccak256( abi.encode( PERMIT_TYPEHASH, holder, spender, nonce, expiry, allowed ) ) ) ); require(holder != address(0), "ERC20WithRate: address must not be 0x0"); require( holder == ecrecover(digest, v, r, s), "ERC20WithRate: invalid signature" ); require( expiry == 0 || now <= expiry, "ERC20WithRate: permit has expired" ); require(nonce == nonces[holder]++, "ERC20WithRate: invalid nonce"); uint256 amount = allowed ? uint256(-1) : 0; _approve(holder, spender, amount); } } contract RenERC20LogicV1 is Initializable, ERC20, ERC20Detailed, ERC20WithRate, ERC20WithPermit, Claimable, CanReclaimTokens { function initialize( uint256 _chainId, address _nextOwner, uint256 _initialRate, string memory _version, string memory _name, string memory _symbol, uint8 _decimals ) public initializer { ERC20Detailed.initialize(_name, _symbol, _decimals); ERC20WithRate.initialize(_nextOwner, _initialRate); ERC20WithPermit.initialize( _chainId, _version, _name, _symbol, _decimals ); Claimable.initialize(_nextOwner); CanReclaimTokens.initialize(_nextOwner); } function mint(address _to, uint256 _amount) public onlyOwner { _mint(_to, _amount); } function burn(address _from, uint256 _amount) public onlyOwner { _burn(_from, _amount); } function transfer(address recipient, uint256 amount) public returns (bool) { require( recipient != address(this), "RenERC20: can't transfer to token address" ); return super.transfer(recipient, amount); } function transferFrom(address sender, address recipient, uint256 amount) public returns (bool) { require( recipient != address(this), "RenERC20: can't transfer to token address" ); return super.transferFrom(sender, recipient, amount); } } contract RenBTC is InitializableAdminUpgradeabilityProxy {} contract RenZEC is InitializableAdminUpgradeabilityProxy {} contract RenBCH is InitializableAdminUpgradeabilityProxy {} interface IMintGateway { function mint( bytes32 _pHash, uint256 _amount, bytes32 _nHash, bytes calldata _sig ) external returns (uint256); function mintFee() external view returns (uint256); } interface IBurnGateway { function burn(bytes calldata _to, uint256 _amountScaled) external returns (uint256); function burnFee() external view returns (uint256); } interface IGateway { function mint( bytes32 _pHash, uint256 _amount, bytes32 _nHash, bytes calldata _sig ) external returns (uint256); function mintFee() external view returns (uint256); function burn(bytes calldata _to, uint256 _amountScaled) external returns (uint256); function burnFee() external view returns (uint256); } contract GatewayStateV1 { uint256 constant BIPS_DENOMINATOR = 10000; uint256 public minimumBurnAmount; RenERC20LogicV1 public token; address public mintAuthority; address public feeRecipient; uint16 public mintFee; uint16 public burnFee; mapping(bytes32 => bool) public status; uint256 public nextN = 0; } contract GatewayLogicV1 is Initializable, Claimable, CanReclaimTokens, IGateway, GatewayStateV1 { using SafeMath for uint256; event LogMintAuthorityUpdated(address indexed _newMintAuthority); event LogMint( address indexed _to, uint256 _amount, uint256 indexed _n, bytes32 indexed _signedMessageHash ); event LogBurn( bytes _to, uint256 _amount, uint256 indexed _n, bytes indexed _indexedTo ); modifier onlyOwnerOrMintAuthority() { require( msg.sender == mintAuthority || msg.sender == owner(), "Gateway: caller is not the owner or mint authority" ); _; } function initialize( RenERC20LogicV1 _token, address _feeRecipient, address _mintAuthority, uint16 _mintFee, uint16 _burnFee, uint256 _minimumBurnAmount ) public initializer { Claimable.initialize(msg.sender); CanReclaimTokens.initialize(msg.sender); minimumBurnAmount = _minimumBurnAmount; token = _token; mintFee = _mintFee; burnFee = _burnFee; updateMintAuthority(_mintAuthority); updateFeeRecipient(_feeRecipient); } function claimTokenOwnership() public { token.claimOwnership(); } function transferTokenOwnership(GatewayLogicV1 _nextTokenOwner) public onlyOwner { token.transferOwnership(address(_nextTokenOwner)); _nextTokenOwner.claimTokenOwnership(); } function updateMintAuthority(address _nextMintAuthority) public onlyOwnerOrMintAuthority { require( _nextMintAuthority != address(0), "Gateway: mintAuthority cannot be set to address zero" ); mintAuthority = _nextMintAuthority; emit LogMintAuthorityUpdated(mintAuthority); } function updateMinimumBurnAmount(uint256 _minimumBurnAmount) public onlyOwner { minimumBurnAmount = _minimumBurnAmount; } function updateFeeRecipient(address _nextFeeRecipient) public onlyOwner { require( _nextFeeRecipient != address(0x0), "Gateway: fee recipient cannot be 0x0" ); feeRecipient = _nextFeeRecipient; } function updateMintFee(uint16 _nextMintFee) public onlyOwner { mintFee = _nextMintFee; } function updateBurnFee(uint16 _nextBurnFee) public onlyOwner { burnFee = _nextBurnFee; } function mint( bytes32 _pHash, uint256 _amountUnderlying, bytes32 _nHash, bytes memory _sig ) public returns (uint256) { bytes32 signedMessageHash = hashForSignature( _pHash, _amountUnderlying, msg.sender, _nHash ); require( status[signedMessageHash] == false, "Gateway: nonce hash already spent" ); if (!verifySignature(signedMessageHash, _sig)) { revert( String.add8( "Gateway: invalid signature. pHash: ", String.fromBytes32(_pHash), ", amount: ", String.fromUint(_amountUnderlying), ", msg.sender: ", String.fromAddress(msg.sender), ", _nHash: ", String.fromBytes32(_nHash) ) ); } status[signedMessageHash] = true; uint256 amountScaled = token.fromUnderlying(_amountUnderlying); uint256 absoluteFeeScaled = amountScaled.mul(mintFee).div( BIPS_DENOMINATOR ); uint256 receivedAmountScaled = amountScaled.sub( absoluteFeeScaled, "Gateway: fee exceeds amount" ); token.mint(msg.sender, receivedAmountScaled); token.mint(feeRecipient, absoluteFeeScaled); uint256 receivedAmountUnderlying = token.toUnderlying( receivedAmountScaled ); emit LogMint( msg.sender, receivedAmountUnderlying, nextN, signedMessageHash ); nextN += 1; return receivedAmountScaled; } function burn(bytes memory _to, uint256 _amount) public returns (uint256) { require(_to.length != 0, "Gateway: to address is empty"); uint256 fee = _amount.mul(burnFee).div(BIPS_DENOMINATOR); uint256 amountAfterFee = _amount.sub( fee, "Gateway: fee exceeds amount" ); uint256 amountAfterFeeUnderlying = token.toUnderlying(amountAfterFee); token.burn(msg.sender, _amount); token.mint(feeRecipient, fee); require( amountAfterFeeUnderlying > minimumBurnAmount, "Gateway: amount is less than the minimum burn amount" ); emit LogBurn(_to, amountAfterFeeUnderlying, nextN, _to); nextN += 1; return amountAfterFeeUnderlying; } function verifySignature(bytes32 _signedMessageHash, bytes memory _sig) public view returns (bool) { return mintAuthority == ECDSA.recover(_signedMessageHash, _sig); } function hashForSignature( bytes32 _pHash, uint256 _amount, address _to, bytes32 _nHash ) public view returns (bytes32) { return keccak256(abi.encode(_pHash, _amount, address(token), _to, _nHash)); } } contract BTCGateway is InitializableAdminUpgradeabilityProxy {} contract ZECGateway is InitializableAdminUpgradeabilityProxy {} contract BCHGateway is InitializableAdminUpgradeabilityProxy {}
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[{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"previousAdmin","type":"address"},{"indexed":false,"internalType":"address","name":"newAdmin","type":"address"}],"name":"AdminChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"implementation","type":"address"}],"name":"Upgraded","type":"event"},{"payable":true,"stateMutability":"payable","type":"fallback"},{"constant":false,"inputs":[],"name":"admin","outputs":[{"internalType":"address","name":"","type":"address"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"newAdmin","type":"address"}],"name":"changeAdmin","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[],"name":"implementation","outputs":[{"internalType":"address","name":"","type":"address"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"_logic","type":"address"},{"internalType":"address","name":"_admin","type":"address"},{"internalType":"bytes","name":"_data","type":"bytes"}],"name":"initialize","outputs":[],"payable":true,"stateMutability":"payable","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"_logic","type":"address"},{"internalType":"bytes","name":"_data","type":"bytes"}],"name":"initialize","outputs":[],"payable":true,"stateMutability":"payable","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"newImplementation","type":"address"}],"name":"upgradeTo","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"newImplementation","type":"address"},{"internalType":"bytes","name":"data","type":"bytes"}],"name":"upgradeToAndCall","outputs":[],"payable":true,"stateMutability":"payable","type":"function"}]
Contract Creation Code
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Deployed Bytecode
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Multichain Portfolio | 30 Chains
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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.