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Latest 18 from a total of 18 transactions
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Redeem | 20235751 | 8 days ago | IN | 0 ETH | 0.00453857 | ||||
Redeem | 20199103 | 13 days ago | IN | 0 ETH | 0.00232198 | ||||
Redeem | 20163084 | 18 days ago | IN | 0 ETH | 0.0084776 | ||||
Redeem | 20162873 | 18 days ago | IN | 0 ETH | 0.01458794 | ||||
Redeem | 20084471 | 29 days ago | IN | 0 ETH | 0.00923199 | ||||
Redeem | 20083942 | 29 days ago | IN | 0 ETH | 0.01650372 | ||||
Redeem | 19989701 | 43 days ago | IN | 0 ETH | 0.00787247 | ||||
Redeem | 19977196 | 44 days ago | IN | 0 ETH | 0.01276593 | ||||
Redeem | 19368126 | 130 days ago | IN | 0 ETH | 0.03918557 | ||||
Redeem | 19368019 | 130 days ago | IN | 0 ETH | 0.05164893 | ||||
Redeem | 18931953 | 191 days ago | IN | 0 ETH | 0.0116986 | ||||
Redeem | 18484898 | 253 days ago | IN | 0 ETH | 0.02521339 | ||||
Redeem | 18481653 | 254 days ago | IN | 0 ETH | 0.01848282 | ||||
Redeem | 18480341 | 254 days ago | IN | 0 ETH | 0.02287736 | ||||
Issue | 18471945 | 255 days ago | IN | 0 ETH | 0.02552503 | ||||
Redeem | 18471361 | 255 days ago | IN | 0 ETH | 0.03042237 | ||||
Redeem | 18470795 | 255 days ago | IN | 0 ETH | 0.02352953 | ||||
0x60a06040 | 18460699 | 257 days ago | IN | Create: Issuance | 0 ETH | 0.00852725 |
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Contract Name:
Issuance
Compiler Version
v0.8.18+commit.87f61d96
Optimization Enabled:
Yes with 200 runs
Other Settings:
paris EvmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: GPL-3.0 pragma solidity =0.8.18; import {VerifiableAddressArray} from "src/lib/VArray.sol"; import {IIndexToken} from "src/interfaces/IIndexToken.sol"; import {TokenInfo} from "src/Common.sol"; import {IVault} from "src/interfaces/IVault.sol"; import {SCALAR, fmul, fdiv} from "src/lib/FixedPoint.sol"; import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol"; import {SafeERC20} from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol"; import {IIssuance} from "src/interfaces/IIssuance.sol"; contract Issuance is IIssuance { using VerifiableAddressArray for VerifiableAddressArray.VerifiableArray; using SafeERC20 for IERC20; IVault public immutable vault; uint256 public reentrancyLock = 1; modifier invariantCheck() { _; vault.invariantCheck(); } modifier reentrancyGuard() { if (reentrancyLock > 1) revert IssuanceReentrant(); reentrancyLock = 2; _; reentrancyLock = 1; } constructor(address _vault) { vault = IVault(_vault); } /// @notice Issue index tokens /// @param amount The amount of index tokens to issue /// @dev requires approval of underlying tokens /// @dev reentrancy guard in case callback in tokens function issue(uint256 amount) external invariantCheck reentrancyGuard { TokenInfo[] memory tokens = vault.virtualUnits(); if (tokens.length == 0) revert IssuanceNoTokens(); for (uint256 i; i < tokens.length; ) { uint256 underlyingAmount = fmul(tokens[i].units + 1, amount) + 1; IERC20(tokens[i].token).safeTransferFrom( msg.sender, address(vault), underlyingAmount ); unchecked { ++i; } } vault.invokeMint(msg.sender, amount); } /// @notice Redeem index tokens /// @param amount The amount of index tokens to redeem /// @dev reentrancy guard in case callback in tokens function redeem(uint256 amount) external invariantCheck reentrancyGuard { TokenInfo[] memory tokens = vault.virtualUnits(); if (tokens.length == 0) revert IssuanceNoTokens(); IVault.InvokeERC20Args[] memory args = new IVault.InvokeERC20Args[]( tokens.length ); for (uint256 i; i < tokens.length; ) { uint256 underlyingAmount = fmul(tokens[i].units, amount); args[i] = IVault.InvokeERC20Args({ token: tokens[i].token, to: msg.sender, amount: underlyingAmount }); unchecked { ++i; } } vault.invokeBurn(msg.sender, amount); vault.invokeERC20s(args); } }
// SPDX-License-Identifier: GPL-3.0 pragma solidity =0.8.18; /// O(1) insertion / deletion to an array /// can also check inclusion library VerifiableAddressArray { struct VerifiableArray { address[] elements; mapping(address => uint256) indexOf; // use an additional SSTORE to save a SLOAD at user runtime mapping(address => bool) included; } function size(VerifiableArray storage arr) internal view returns (uint256) { return arr.elements.length; } function add(VerifiableArray storage arr, address element) internal { if (includes(arr, element)) { revert("VerifiableArray: element already exists"); } else { arr.included[element] = true; arr.indexOf[element] = arr.elements.length; arr.elements.push(element); } } function remove(VerifiableArray storage arr, address element) internal { if (!includes(arr, element)) { revert("VerifiableArray: element not found"); } uint256 _size = size(arr); if (_size == 1) { delete arr.included[element]; delete arr.indexOf[element]; arr.elements.pop(); return; } uint index = arr.indexOf[element]; address lastElement = arr.elements[_size - 1]; arr.indexOf[lastElement] = index; delete arr.included[element]; delete arr.indexOf[element]; arr.elements[index] = lastElement; arr.elements.pop(); } function includes( VerifiableArray storage arr, address element ) internal view returns (bool) { return arr.included[element]; } function toStorageArray( VerifiableArray storage arr ) internal view returns (address[] storage) { return arr.elements; } function toMemoryArray( VerifiableArray storage arr ) internal view returns (address[] memory) { address[] storage stor = toStorageArray(arr); uint256 len = stor.length; address[] memory mem = new address[](len); for (uint256 i; i < len; i++) { mem[i] = stor[i]; } return mem; } }
// SPDX-License-Identifier: GPL-3.0 pragma solidity =0.8.18; import {IERC20Upgradeable} from "@openzeppelin/contracts-upgradeable/interfaces/IERC20Upgradeable.sol"; interface IIndexToken is IERC20Upgradeable { event MinterSet(address indexed minter); ///============================================================================================= /// Initializer ///============================================================================================= function initialize(address _minter) external; ///============================================================================================= /// State ///============================================================================================= function minter() external view returns (address); ///============================================================================================= /// Mint Logic ///============================================================================================= /// @notice External mint function /// @dev Mint function can only be called externally by the controller /// @param to address /// @param amount uint256 function mint(address to, uint256 amount) external; /// @notice External burn function /// @dev burn function can only be called externally by the controller /// @param from address /// @param amount uint256 function burn(address from, uint256 amount) external; }
// SPDX-License-Identifier: GPL-3.0 pragma solidity =0.8.18; struct TokenInfo { address token; uint256 units; }
// SPDX-License-Identifier: GPL-3.0 pragma solidity =0.8.18; import {TokenInfo} from "src/Common.sol"; import {IIndexToken} from "src/interfaces/IIndexToken.sol"; interface IVault { error AMKTVaultOnlyInvokers(); error AMKTVaultOnly(address who); error AMKTVaultInflationRateTooLarge(); error AMKTVaultFeeTooEarly(); error AMKTVaultFeeTooSmall(); error AMKTVaultEmergency(); error VaultInvariant(); error VaultZeroCheck(); event VaultIssuanceSet(address issuance); event VaultRebalancerSet(address rebalancer); event VaultFeeRecipientSet(address feeRecipient); event VaultEmergencyResponderSet(address emergencyResponder); event VaultInflationRateSet(uint256 inflationRate); event VaultEmergencySet(bool emergency); event VaultFeeMinted(address indexed to, uint256 amount); struct InvokeERC20Args { address token; address to; uint256 amount; } struct SetNominalArgs { address token; uint256 virtualUnits; } function issuance() external view returns (address); function rebalancer() external view returns (address); function tryInflation() external; function inflationRate() external view returns (uint256); function feeRecipient() external view returns (address); function lastKnownTimestamp() external view returns (uint256); function invokeERC20s(InvokeERC20Args[] calldata args) external; function invokeSetNominals(SetNominalArgs[] calldata args) external; function virtualUnits(address token) external view returns (uint256); function virtualUnits() external view returns (TokenInfo[] memory); function invariantCheck() external view; function isUnderlying(address target) external view returns (bool); function underlying() external view returns (address[] memory); function underlyingLength() external view returns (uint256); function invokeMint(address to, uint256 amount) external; function invokeBurn(address from, uint256 amount) external; function indexToken() external view returns (IIndexToken); }
// SPDX-License-Identifier: GPL-3.0 pragma solidity =0.8.18; uint256 constant SCALAR = 1e18; function fmul(uint256 a, uint256 b) pure returns (uint256 ret) { ret = (a * b) / SCALAR; } function fdiv(uint256 a, uint256 b) pure returns (uint256 ret) { ret = (a * SCALAR) / b; } function finv(uint256 a) pure returns (uint256 ret) { ret = fdiv(SCALAR, a); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @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); /** * @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 `to`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address to, 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. * * IMPORTANT: 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 `from` to `to` 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 from, address to, uint256 amount ) external returns (bool); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.8.0) (token/ERC20/utils/SafeERC20.sol) pragma solidity ^0.8.0; import "../IERC20.sol"; import "../extensions/draft-IERC20Permit.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 IERC20;` statement to your contract, * which allows you to call the safe operations as `token.safeTransfer(...)`, etc. */ library SafeERC20 { 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)); } /** * @dev Deprecated. This function has issues similar to the ones found in * {IERC20-approve}, and its usage is discouraged. * * Whenever possible, use {safeIncreaseAllowance} and * {safeDecreaseAllowance} instead. */ 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' 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) + value; _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } function safeDecreaseAllowance( IERC20 token, address spender, uint256 value ) internal { unchecked { uint256 oldAllowance = token.allowance(address(this), spender); require(oldAllowance >= value, "SafeERC20: decreased allowance below zero"); uint256 newAllowance = oldAllowance - value; _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } } function safePermit( IERC20Permit token, address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) internal { uint256 nonceBefore = token.nonces(owner); token.permit(owner, spender, value, deadline, v, r, s); uint256 nonceAfter = token.nonces(owner); require(nonceAfter == nonceBefore + 1, "SafeERC20: permit did not succeed"); } /** * @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. We use {Address-functionCall} to perform this call, which verifies that // the target address contains contract code and also asserts for success in the low-level call. bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed"); if (returndata.length > 0) { // Return data is optional require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed"); } } }
// SPDX-License-Identifier: GPL-3.0 pragma solidity =0.8.18; import {TokenInfo} from "src/Common.sol"; interface IIssuance { error IssuanceReentrant(); error IssuanceNoTokens(); function issue(uint256 amount) external; function redeem(uint256 amount) external; }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (interfaces/IERC20.sol) pragma solidity ^0.8.0; import "../token/ERC20/IERC20Upgradeable.sol";
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/draft-IERC20Permit.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612]. * * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't * need to send a transaction, and thus is not required to hold Ether at all. */ interface IERC20Permit { /** * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens, * given ``owner``'s signed approval. * * IMPORTANT: The same issues {IERC20-approve} has related to transaction * ordering also apply here. * * Emits an {Approval} event. * * Requirements: * * - `spender` cannot be the zero address. * - `deadline` must be a timestamp in the future. * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner` * over the EIP712-formatted function arguments. * - the signature must use ``owner``'s current nonce (see {nonces}). * * For more information on the signature format, see the * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP * section]. */ function permit( address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) external; /** * @dev Returns the current nonce for `owner`. This value must be * included whenever a signature is generated for {permit}. * * Every successful call to {permit} increases ``owner``'s nonce by one. This * prevents a signature from being used multiple times. */ function nonces(address owner) external view returns (uint256); /** * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}. */ // solhint-disable-next-line func-name-mixedcase function DOMAIN_SEPARATOR() external view returns (bytes32); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.8.0) (utils/Address.sol) pragma solidity ^0.8.1; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== * * [IMPORTANT] * ==== * You shouldn't rely on `isContract` to protect against flash loan attacks! * * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract * constructor. * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize/address.code.length, which returns 0 // for contracts in construction, since the code is only stored at the end // of the constructor execution. return account.code.length > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ 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"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value ) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResultFromTarget(target, success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResultFromTarget(target, success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResultFromTarget(target, success, returndata, errorMessage); } /** * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract. * * _Available since v4.8._ */ function verifyCallResultFromTarget( address target, bool success, bytes memory returndata, string memory errorMessage ) internal view returns (bytes memory) { if (success) { if (returndata.length == 0) { // only check isContract if the call was successful and the return data is empty // otherwise we already know that it was a contract require(isContract(target), "Address: call to non-contract"); } return returndata; } else { _revert(returndata, errorMessage); } } /** * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason or using the provided one. * * _Available since v4.3._ */ function verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) internal pure returns (bytes memory) { if (success) { return returndata; } else { _revert(returndata, errorMessage); } } function _revert(bytes memory returndata, string memory errorMessage) private pure { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly /// @solidity memory-safe-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20Upgradeable { /** * @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); /** * @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 `to`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address to, 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. * * IMPORTANT: 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 `from` to `to` 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 from, address to, uint256 amount ) external returns (bool); }
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Contract Security Audit
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[{"inputs":[{"internalType":"address","name":"_vault","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"IssuanceNoTokens","type":"error"},{"inputs":[],"name":"IssuanceReentrant","type":"error"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"issue","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"redeem","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"reentrancyLock","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"vault","outputs":[{"internalType":"contract IVault","name":"","type":"address"}],"stateMutability":"view","type":"function"}]
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)
000000000000000000000000f3bcedab2998933c6aad1cb31430d8bab329dd8c
-----Decoded View---------------
Arg [0] : _vault (address): 0xf3bCeDaB2998933c6AAD1cB31430D8bAb329dD8C
-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 000000000000000000000000f3bcedab2998933c6aad1cb31430d8bab329dd8c
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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.