Overview
ETH Balance
0.00183000000000806 ETH
Eth Value
$4.84 (@ $2,646.56/ETH)Token Holdings
More Info
Private Name Tags
ContractCreator
Latest 18 from a total of 18 transactions
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Withdraw | 14902244 | 878 days ago | IN | 0 ETH | 0.00789438 | ||||
Update Defaulted... | 14902203 | 878 days ago | IN | 0 ETH | 0.00093196 | ||||
Exchange St Eth ... | 14902189 | 878 days ago | IN | 0 ETH | 0.00499164 | ||||
Update Safety Fu... | 14902170 | 878 days ago | IN | 0 ETH | 0.00126562 | ||||
Withdraw | 14902116 | 878 days ago | IN | 0 ETH | 0.00488851 | ||||
Update Defaulted... | 14697818 | 911 days ago | IN | 0 ETH | 0.00194516 | ||||
Liquidate NFT | 14677852 | 914 days ago | IN | 0.42 ETH | 0.00154657 | ||||
Get Defaulted NF... | 14677844 | 914 days ago | IN | 0 ETH | 0.0059098 | ||||
Deposit ETH | 14677764 | 914 days ago | IN | 0.1 ETH | 0.00634483 | ||||
Deposit ETH | 14677743 | 914 days ago | IN | 0.5 ETH | 0.00467536 | ||||
Withdraw | 14667858 | 915 days ago | IN | 0 ETH | 0.01917447 | ||||
Deposit ETH | 14667685 | 915 days ago | IN | 0.01 ETH | 0.00871284 | ||||
Exchange St Eth ... | 14665567 | 916 days ago | IN | 0 ETH | 0.00571756 | ||||
Exchange Eth To ... | 14665553 | 916 days ago | IN | 0 ETH | 0.00449533 | ||||
Grant Role | 14665525 | 916 days ago | IN | 0 ETH | 0.00136773 | ||||
Grant Role | 14665522 | 916 days ago | IN | 0 ETH | 0.00091952 | ||||
Grant Role | 14665521 | 916 days ago | IN | 0 ETH | 0.00154871 | ||||
0x61010060 | 14665519 | 916 days ago | IN | 1 ETH | 0.09520256 |
Latest 22 internal transactions
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14902244 | 878 days ago | 1.09825774 ETH | ||||
14902189 | 878 days ago | 0.09825774 ETH | ||||
14902116 | 878 days ago | 0.84889381 ETH | ||||
14677699 | 914 days ago | 0.14154036 ETH | ||||
14677683 | 914 days ago | 0.05428072 ETH | ||||
14677677 | 914 days ago | 0.05428072 ETH | ||||
14677674 | 914 days ago | 0.05428072 ETH | ||||
14677636 | 914 days ago | 0.14154036 ETH | ||||
14677547 | 914 days ago | 0.33 ETH | ||||
14677544 | 914 days ago | 0.33 ETH | ||||
14667858 | 915 days ago | 0.01047941 ETH | ||||
14667854 | 915 days ago | 0.03216295 ETH | ||||
14667834 | 915 days ago | 0.03216295 ETH | ||||
14667821 | 915 days ago | 0.09503865 ETH | ||||
14667809 | 915 days ago | 0.09503865 ETH | ||||
14667805 | 915 days ago | 0.03216295 ETH | ||||
14667786 | 915 days ago | 0.09503865 ETH | ||||
14667756 | 915 days ago | 0.09503865 ETH | ||||
14667706 | 915 days ago | 0.339 ETH | ||||
14667651 | 915 days ago | 0.08612001 ETH | ||||
14665567 | 916 days ago | 0.09991831 ETH | ||||
14665553 | 916 days ago | 0.2 ETH |
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Contract Name:
CyanVaultV1
Compiler Version
v0.8.13+commit.abaa5c0e
Optimization Enabled:
Yes with 500 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: MIT pragma solidity 0.8.13; import "@openzeppelin/contracts/access/AccessControl.sol"; import "@openzeppelin/contracts/security/ReentrancyGuard.sol"; import "@openzeppelin/contracts/token/ERC721/IERC721.sol"; import "@openzeppelin/contracts/token/ERC721/utils/ERC721Holder.sol"; import "@openzeppelin/contracts/security/Pausable.sol"; import "./CyanVaultTokenV1.sol"; import "./IStableSwapSTETH.sol"; contract CyanVaultV1 is AccessControl, ReentrancyGuard, ERC721Holder, Pausable { bytes32 public constant CYAN_ROLE = keccak256("CYAN_ROLE"); bytes32 public constant CYAN_PAYMENT_PLAN_ROLE = keccak256("CYAN_PAYMENT_PLAN_ROLE"); bytes32 public constant CYAN_BALANCER_ROLE = keccak256("CYAN_BALANCER_ROLE"); event DepositETH( address indexed from, uint256 ethAmount, uint256 tokenAmount ); event Lend(address indexed to, uint256 amount); event Earn(uint256 paymentAmount, uint256 profitAmount); event NftDefaulted(uint256 unpaidAmount, uint256 estimatedPriceOfNFT); event NftLiquidated(uint256 defaultedAssetsAmount, uint256 soldAmount); event WithdrawETH( address indexed from, uint256 ethAmount, uint256 tokenAmount ); event GetDefaultedNFT( address indexed to, address indexed contractAddress, uint256 indexed tokenId ); event UpdatedDefaultedNFTAssetAmount(uint256 amount); event UpdatedServiceFeePercent(uint256 from, uint256 to); event UpdatedSafetyFundPercent(uint256 from, uint256 to); event ExchangedEthToStEth(uint256 ethAmount, uint256 receivedStEthAmount); event ExchangedStEthToEth(uint256 stEthAmount, uint256 receivedEthAmount); event ReceivedETH(uint256 amount, address indexed from); address public immutable _cyanVaultTokenAddress; CyanVaultTokenV1 private immutable _cyanVaultTokenContract; IERC20 private immutable _stEthTokenContract; IStableSwapSTETH private immutable _stableSwapSTETHContract; // Safety fund percent. (x100) uint256 public _safetyFundPercent; // Cyan service fee percent. (x100) uint256 public _serviceFeePercent; // Remaining amount of ETH uint256 private REMAINING_AMOUNT; // Total loaned amount uint256 private LOANED_AMOUNT; // Total defaulted NFT amount uint256 private DEFAULTED_NFT_ASSET_AMOUNT; // Cyan collected service fee uint256 private COLLECTED_SERVICE_FEE_AMOUNT; constructor( address cyanVaultTokenAddress, address cyanPaymentPlanAddress, address stEthTokenAddress, address curveStableSwapStEthAddress, address cyanSuperAdmin, uint256 safetyFundPercent, uint256 serviceFeePercent ) payable { _cyanVaultTokenAddress = cyanVaultTokenAddress; _cyanVaultTokenContract = CyanVaultTokenV1(_cyanVaultTokenAddress); _safetyFundPercent = safetyFundPercent; _serviceFeePercent = serviceFeePercent; LOANED_AMOUNT = 0; DEFAULTED_NFT_ASSET_AMOUNT = 0; REMAINING_AMOUNT = msg.value; _stEthTokenContract = IERC20(stEthTokenAddress); _stableSwapSTETHContract = IStableSwapSTETH( curveStableSwapStEthAddress ); _setupRole(DEFAULT_ADMIN_ROLE, cyanSuperAdmin); _setupRole(DEFAULT_ADMIN_ROLE, msg.sender); _setupRole(CYAN_PAYMENT_PLAN_ROLE, cyanPaymentPlanAddress); } // User stakes ETH function depositETH() external payable nonReentrant whenNotPaused { require(msg.value > 0, "Must deposit more than 0 ETH"); // Cyan collecting service fee from deposits uint256 cyanServiceFee = (msg.value * _serviceFeePercent) / 10000; uint256 depositedAmount = msg.value - cyanServiceFee; uint256 mintAmount = calculateTokenByETH(depositedAmount); REMAINING_AMOUNT += depositedAmount; COLLECTED_SERVICE_FEE_AMOUNT += cyanServiceFee; _cyanVaultTokenContract.mint(msg.sender, mintAmount); emit DepositETH(msg.sender, depositedAmount, mintAmount); } // Cyan lends money from Vault to do BNPL or PAWN function lend(address to, uint256 amount) external nonReentrant whenNotPaused onlyRole(CYAN_PAYMENT_PLAN_ROLE) { uint256 maxWithdrableAmount = getMaxWithdrawableAmount(); require(amount <= maxWithdrableAmount, "Not enough ETH in the Vault"); LOANED_AMOUNT += amount; REMAINING_AMOUNT -= amount; payable(to).transfer(amount); emit Lend(to, amount); } // Cyan Payment Plan contract transfers paid amount back to Vault function earn(uint256 amount, uint256 profit) external payable nonReentrant onlyRole(CYAN_PAYMENT_PLAN_ROLE) { require(msg.value == amount + profit, "Wrong tranfer amount"); REMAINING_AMOUNT += msg.value; if (LOANED_AMOUNT >= amount) { LOANED_AMOUNT -= amount; } else { LOANED_AMOUNT = 0; } emit Earn(amount, profit); } // When BNPL or PAWN plan defaults function nftDefaulted(uint256 unpaidAmount, uint256 estimatedPriceOfNFT) external nonReentrant onlyRole(CYAN_PAYMENT_PLAN_ROLE) { DEFAULTED_NFT_ASSET_AMOUNT += estimatedPriceOfNFT; if (LOANED_AMOUNT >= unpaidAmount) { LOANED_AMOUNT -= unpaidAmount; } else { LOANED_AMOUNT = 0; } emit NftDefaulted(unpaidAmount, estimatedPriceOfNFT); } // Liquidating defaulted BNPL or PAWN token and tranferred sold amount to Vault function liquidateNFT(uint256 totalDefaultedNFTAmount) external payable whenNotPaused onlyRole(CYAN_ROLE) { REMAINING_AMOUNT += msg.value; DEFAULTED_NFT_ASSET_AMOUNT = totalDefaultedNFTAmount; emit NftLiquidated(msg.value, totalDefaultedNFTAmount); } // User unstakes tokenAmount of tokens and gets back ETH function withdraw(uint256 amount) external nonReentrant whenNotPaused { require(amount > 0, "Non-positive token amount"); uint256 balance = _cyanVaultTokenContract.balanceOf(msg.sender); require(balance >= amount, "Check the token balance"); uint256 withdrawableTokenBalance = getWithdrawableBalance(msg.sender); require( amount <= withdrawableTokenBalance, "Not enough active balance in Cyan Vault" ); uint256 withdrawETHAmount = calculateETHByToken(amount); REMAINING_AMOUNT -= withdrawETHAmount; _cyanVaultTokenContract.burn(msg.sender, amount); payable(msg.sender).transfer(withdrawETHAmount); emit WithdrawETH(msg.sender, withdrawETHAmount, amount); } // Cyan updating total amount of defaulted NFT assets function updateDefaultedNFTAssetAmount(uint256 amount) external whenNotPaused onlyRole(CYAN_ROLE) { DEFAULTED_NFT_ASSET_AMOUNT = amount; emit UpdatedDefaultedNFTAssetAmount(amount); } // Get defaulted NFT from Vault to Cyan Admin account function getDefaultedNFT(address contractAddress, uint256 tokenId) external nonReentrant whenNotPaused onlyRole(CYAN_ROLE) { require(contractAddress != address(0), "Zero contract address"); IERC721 originalContract = IERC721(contractAddress); require( originalContract.ownerOf(tokenId) == address(this), "Vault isn't owner of the token" ); originalContract.safeTransferFrom(address(this), msg.sender, tokenId); emit GetDefaultedNFT(msg.sender, contractAddress, tokenId); } function getWithdrawableBalance(address user) public view returns (uint256) { uint256 tokenBalance = _cyanVaultTokenContract.balanceOf(user); uint256 ethAmountForToken = calculateETHByToken(tokenBalance); uint256 maxWithdrawableAmount = getMaxWithdrawableAmount(); if (ethAmountForToken <= maxWithdrawableAmount) { return tokenBalance; } return calculateTokenByETH(maxWithdrawableAmount); } function getMaxWithdrawableAmount() public view returns (uint256) { uint256 util = ((LOANED_AMOUNT + DEFAULTED_NFT_ASSET_AMOUNT) * _safetyFundPercent) / 10000; if (REMAINING_AMOUNT > util) { return REMAINING_AMOUNT - util; } return 0; } function getCurrentAssetAmounts() external view returns ( uint256, uint256, uint256, uint256, uint256 ) { return ( REMAINING_AMOUNT, LOANED_AMOUNT, DEFAULTED_NFT_ASSET_AMOUNT, COLLECTED_SERVICE_FEE_AMOUNT, _stEthTokenContract.balanceOf(address(this)) ); } function calculateTokenByETH(uint256 amount) public view returns (uint256) { (uint256 totalETH, uint256 totalToken) = getTotalEthAndToken(); return (amount * totalToken) / totalETH; } function calculateETHByToken(uint256 amount) public view returns (uint256) { (uint256 totalETH, uint256 totalToken) = getTotalEthAndToken(); return (amount * totalETH) / totalToken; } function getTotalEthAndToken() private view returns (uint256, uint256) { uint256 vaultStEthBalance = _stEthTokenContract.balanceOf( address(this) ); uint256 stEthInEth = _stableSwapSTETHContract.get_dy( 1, 0, vaultStEthBalance ); uint256 totalETH = REMAINING_AMOUNT + LOANED_AMOUNT + DEFAULTED_NFT_ASSET_AMOUNT + stEthInEth; uint256 totalToken = _cyanVaultTokenContract.totalSupply(); return (totalETH, totalToken); } function exchangeEthToStEth(uint256 ethAmount, uint256 minStEthAmount) external nonReentrant onlyRole(CYAN_BALANCER_ROLE) { require(ethAmount > 0, "Exchanging ETH amount is zero"); require( ethAmount <= REMAINING_AMOUNT, "Cannot exchange more than REMAINING_AMOUNT" ); // Exchanging ETH to stETH uint256 receivedStEthAmount = _stableSwapSTETHContract.exchange{ value: ethAmount }(0, 1, ethAmount, minStEthAmount); REMAINING_AMOUNT -= ethAmount; emit ExchangedEthToStEth(ethAmount, receivedStEthAmount); } function exchangeStEthToEth(uint256 stEthAmount, uint256 minEthAmount) external nonReentrant onlyRole(CYAN_BALANCER_ROLE) { require(stEthAmount > 0, "Exchanging stETH amount is zero"); // Exchanging stETH to ETH _stEthTokenContract.approve( address(_stableSwapSTETHContract), stEthAmount ); uint256 receivedEthAmount = _stableSwapSTETHContract.exchange( 1, 0, stEthAmount, minEthAmount ); emit ExchangedStEthToEth(stEthAmount, receivedEthAmount); } function updateSafetyFundPercent(uint256 safetyFundPercent) external nonReentrant onlyRole(DEFAULT_ADMIN_ROLE) { require( safetyFundPercent <= 10000, "Safety fund percent must be equal or less than 100 percent" ); emit UpdatedSafetyFundPercent(_safetyFundPercent, safetyFundPercent); _safetyFundPercent = safetyFundPercent; } function updateServiceFeePercent(uint256 serviceFeePercent) external nonReentrant onlyRole(DEFAULT_ADMIN_ROLE) { require( serviceFeePercent <= 200, "Service fee percent must not be greater than 2 percent" ); emit UpdatedServiceFeePercent(_serviceFeePercent, serviceFeePercent); _serviceFeePercent = serviceFeePercent; } function collectServiceFee(uint256 amount) external nonReentrant onlyRole(DEFAULT_ADMIN_ROLE) { require( amount <= COLLECTED_SERVICE_FEE_AMOUNT, "Not enough collected service fee" ); COLLECTED_SERVICE_FEE_AMOUNT -= amount; payable(msg.sender).transfer(amount); } function withdrawAirDroppedERC20(address contractAddress, uint256 amount) external nonReentrant onlyRole(CYAN_ROLE) { require( contractAddress != address(_stEthTokenContract), "Cannot withdraw stETH" ); IERC20 erc20Contract = IERC20(contractAddress); require( erc20Contract.balanceOf(address(this)) >= amount, "ERC20 balance not enough" ); erc20Contract.transfer(msg.sender, amount); } function withdrawApprovedERC20( address contractAddress, address from, uint256 amount ) external nonReentrant onlyRole(CYAN_ROLE) { require( contractAddress != address(_stEthTokenContract), "Cannot withdraw stETH" ); IERC20 erc20Contract = IERC20(contractAddress); require( erc20Contract.allowance(from, address(this)) >= amount, "ERC20 allowance not enough" ); erc20Contract.transferFrom(from, msg.sender, amount); } receive() external payable { REMAINING_AMOUNT += msg.value; emit ReceivedETH(msg.value, msg.sender); } fallback() external payable { REMAINING_AMOUNT += msg.value; emit ReceivedETH(msg.value, msg.sender); } function pause() external nonReentrant onlyRole(DEFAULT_ADMIN_ROLE) { _pause(); } function unpause() external nonReentrant onlyRole(DEFAULT_ADMIN_ROLE) { _unpause(); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (access/AccessControl.sol) pragma solidity ^0.8.0; import "./IAccessControl.sol"; import "../utils/Context.sol"; import "../utils/Strings.sol"; import "../utils/introspection/ERC165.sol"; /** * @dev Contract module that allows children to implement role-based access * control mechanisms. This is a lightweight version that doesn't allow enumerating role * members except through off-chain means by accessing the contract event logs. Some * applications may benefit from on-chain enumerability, for those cases see * {AccessControlEnumerable}. * * Roles are referred to by their `bytes32` identifier. These should be exposed * in the external API and be unique. The best way to achieve this is by * using `public constant` hash digests: * * ``` * bytes32 public constant MY_ROLE = keccak256("MY_ROLE"); * ``` * * Roles can be used to represent a set of permissions. To restrict access to a * function call, use {hasRole}: * * ``` * function foo() public { * require(hasRole(MY_ROLE, msg.sender)); * ... * } * ``` * * Roles can be granted and revoked dynamically via the {grantRole} and * {revokeRole} functions. Each role has an associated admin role, and only * accounts that have a role's admin role can call {grantRole} and {revokeRole}. * * By default, the admin role for all roles is `DEFAULT_ADMIN_ROLE`, which means * that only accounts with this role will be able to grant or revoke other * roles. More complex role relationships can be created by using * {_setRoleAdmin}. * * WARNING: The `DEFAULT_ADMIN_ROLE` is also its own admin: it has permission to * grant and revoke this role. Extra precautions should be taken to secure * accounts that have been granted it. */ abstract contract AccessControl is Context, IAccessControl, ERC165 { struct RoleData { mapping(address => bool) members; bytes32 adminRole; } mapping(bytes32 => RoleData) private _roles; bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00; /** * @dev Modifier that checks that an account has a specific role. Reverts * with a standardized message including the required role. * * The format of the revert reason is given by the following regular expression: * * /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/ * * _Available since v4.1._ */ modifier onlyRole(bytes32 role) { _checkRole(role, _msgSender()); _; } /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IAccessControl).interfaceId || super.supportsInterface(interfaceId); } /** * @dev Returns `true` if `account` has been granted `role`. */ function hasRole(bytes32 role, address account) public view override returns (bool) { return _roles[role].members[account]; } /** * @dev Revert with a standard message if `account` is missing `role`. * * The format of the revert reason is given by the following regular expression: * * /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/ */ function _checkRole(bytes32 role, address account) internal view { if (!hasRole(role, account)) { revert( string( abi.encodePacked( "AccessControl: account ", Strings.toHexString(uint160(account), 20), " is missing role ", Strings.toHexString(uint256(role), 32) ) ) ); } } /** * @dev Returns the admin role that controls `role`. See {grantRole} and * {revokeRole}. * * To change a role's admin, use {_setRoleAdmin}. */ function getRoleAdmin(bytes32 role) public view override returns (bytes32) { return _roles[role].adminRole; } /** * @dev Grants `role` to `account`. * * If `account` had not been already granted `role`, emits a {RoleGranted} * event. * * Requirements: * * - the caller must have ``role``'s admin role. */ function grantRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) { _grantRole(role, account); } /** * @dev Revokes `role` from `account`. * * If `account` had been granted `role`, emits a {RoleRevoked} event. * * Requirements: * * - the caller must have ``role``'s admin role. */ function revokeRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) { _revokeRole(role, account); } /** * @dev Revokes `role` from the calling account. * * Roles are often managed via {grantRole} and {revokeRole}: this function's * purpose is to provide a mechanism for accounts to lose their privileges * if they are compromised (such as when a trusted device is misplaced). * * If the calling account had been revoked `role`, emits a {RoleRevoked} * event. * * Requirements: * * - the caller must be `account`. */ function renounceRole(bytes32 role, address account) public virtual override { require(account == _msgSender(), "AccessControl: can only renounce roles for self"); _revokeRole(role, account); } /** * @dev Grants `role` to `account`. * * If `account` had not been already granted `role`, emits a {RoleGranted} * event. Note that unlike {grantRole}, this function doesn't perform any * checks on the calling account. * * [WARNING] * ==== * This function should only be called from the constructor when setting * up the initial roles for the system. * * Using this function in any other way is effectively circumventing the admin * system imposed by {AccessControl}. * ==== * * NOTE: This function is deprecated in favor of {_grantRole}. */ function _setupRole(bytes32 role, address account) internal virtual { _grantRole(role, account); } /** * @dev Sets `adminRole` as ``role``'s admin role. * * Emits a {RoleAdminChanged} event. */ function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal virtual { bytes32 previousAdminRole = getRoleAdmin(role); _roles[role].adminRole = adminRole; emit RoleAdminChanged(role, previousAdminRole, adminRole); } /** * @dev Grants `role` to `account`. * * Internal function without access restriction. */ function _grantRole(bytes32 role, address account) internal virtual { if (!hasRole(role, account)) { _roles[role].members[account] = true; emit RoleGranted(role, account, _msgSender()); } } /** * @dev Revokes `role` from `account`. * * Internal function without access restriction. */ function _revokeRole(bytes32 role, address account) internal virtual { if (hasRole(role, account)) { _roles[role].members[account] = false; emit RoleRevoked(role, account, _msgSender()); } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (security/ReentrancyGuard.sol) pragma solidity ^0.8.0; /** * @dev Contract module that helps prevent reentrant calls to a function. * * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier * available, which can be applied to functions to make sure there are no nested * (reentrant) calls to them. * * Note that because there is a single `nonReentrant` guard, functions marked as * `nonReentrant` may not call one another. This can be worked around by making * those functions `private`, and then adding `external` `nonReentrant` entry * points to them. * * TIP: If you would like to learn more about reentrancy and alternative ways * to protect against it, check out our blog post * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul]. */ abstract contract ReentrancyGuard { // Booleans are more expensive than uint256 or any type that takes up a full // word because each write operation emits an extra SLOAD to first read the // slot's contents, replace the bits taken up by the boolean, and then write // back. This is the compiler's defense against contract upgrades and // pointer aliasing, and it cannot be disabled. // The values being non-zero value makes deployment a bit more expensive, // but in exchange the refund on every call to nonReentrant will be lower in // amount. Since refunds are capped to a percentage of the total // transaction's gas, it is best to keep them low in cases like this one, to // increase the likelihood of the full refund coming into effect. uint256 private constant _NOT_ENTERED = 1; uint256 private constant _ENTERED = 2; uint256 private _status; constructor() { _status = _NOT_ENTERED; } /** * @dev Prevents a contract from calling itself, directly or indirectly. * Calling a `nonReentrant` function from another `nonReentrant` * function is not supported. It is possible to prevent this from happening * by making the `nonReentrant` function external, and making it call a * `private` function that does the actual work. */ modifier nonReentrant() { // On the first call to nonReentrant, _notEntered will be true require(_status != _ENTERED, "ReentrancyGuard: reentrant call"); // Any calls to nonReentrant after this point will fail _status = _ENTERED; _; // By storing the original value once again, a refund is triggered (see // https://eips.ethereum.org/EIPS/eip-2200) _status = _NOT_ENTERED; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721.sol) pragma solidity ^0.8.0; import "../../utils/introspection/IERC165.sol"; /** * @dev Required interface of an ERC721 compliant contract. */ interface IERC721 is IERC165 { /** * @dev Emitted when `tokenId` token is transferred from `from` to `to`. */ event Transfer(address indexed from, address indexed to, uint256 indexed tokenId); /** * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token. */ event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId); /** * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets. */ event ApprovalForAll(address indexed owner, address indexed operator, bool approved); /** * @dev Returns the number of tokens in ``owner``'s account. */ function balanceOf(address owner) external view returns (uint256 balance); /** * @dev Returns the owner of the `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function ownerOf(uint256 tokenId) external view returns (address owner); /** * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function safeTransferFrom( address from, address to, uint256 tokenId ) external; /** * @dev Transfers `tokenId` token from `from` to `to`. * * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * * Emits a {Transfer} event. */ function transferFrom( address from, address to, uint256 tokenId ) external; /** * @dev Gives permission to `to` to transfer `tokenId` token to another account. * The approval is cleared when the token is transferred. * * Only a single account can be approved at a time, so approving the zero address clears previous approvals. * * Requirements: * * - The caller must own the token or be an approved operator. * - `tokenId` must exist. * * Emits an {Approval} event. */ function approve(address to, uint256 tokenId) external; /** * @dev Returns the account approved for `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function getApproved(uint256 tokenId) external view returns (address operator); /** * @dev Approve or remove `operator` as an operator for the caller. * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller. * * Requirements: * * - The `operator` cannot be the caller. * * Emits an {ApprovalForAll} event. */ function setApprovalForAll(address operator, bool _approved) external; /** * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`. * * See {setApprovalForAll} */ function isApprovedForAll(address owner, address operator) external view returns (bool); /** * @dev Safely transfers `tokenId` token from `from` to `to`. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function safeTransferFrom( address from, address to, uint256 tokenId, bytes calldata data ) external; }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC721/utils/ERC721Holder.sol) pragma solidity ^0.8.0; import "../IERC721Receiver.sol"; /** * @dev Implementation of the {IERC721Receiver} interface. * * Accepts all token transfers. * Make sure the contract is able to use its token with {IERC721-safeTransferFrom}, {IERC721-approve} or {IERC721-setApprovalForAll}. */ contract ERC721Holder is IERC721Receiver { /** * @dev See {IERC721Receiver-onERC721Received}. * * Always returns `IERC721Receiver.onERC721Received.selector`. */ function onERC721Received( address, address, uint256, bytes memory ) public virtual override returns (bytes4) { return this.onERC721Received.selector; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (security/Pausable.sol) pragma solidity ^0.8.0; import "../utils/Context.sol"; /** * @dev Contract module which allows children to implement an emergency stop * mechanism that can be triggered by an authorized account. * * This module is used through inheritance. It will make available the * modifiers `whenNotPaused` and `whenPaused`, which can be applied to * the functions of your contract. Note that they will not be pausable by * simply including this module, only once the modifiers are put in place. */ abstract contract Pausable is Context { /** * @dev Emitted when the pause is triggered by `account`. */ event Paused(address account); /** * @dev Emitted when the pause is lifted by `account`. */ event Unpaused(address account); bool private _paused; /** * @dev Initializes the contract in unpaused state. */ constructor() { _paused = false; } /** * @dev Returns true if the contract is paused, and false otherwise. */ function paused() public view virtual returns (bool) { return _paused; } /** * @dev Modifier to make a function callable only when the contract is not paused. * * Requirements: * * - The contract must not be paused. */ modifier whenNotPaused() { require(!paused(), "Pausable: paused"); _; } /** * @dev Modifier to make a function callable only when the contract is paused. * * Requirements: * * - The contract must be paused. */ modifier whenPaused() { require(paused(), "Pausable: not paused"); _; } /** * @dev Triggers stopped state. * * Requirements: * * - The contract must not be paused. */ function _pause() internal virtual whenNotPaused { _paused = true; emit Paused(_msgSender()); } /** * @dev Returns to normal state. * * Requirements: * * - The contract must be paused. */ function _unpause() internal virtual whenPaused { _paused = false; emit Unpaused(_msgSender()); } }
// SPDX-License-Identifier: MIT pragma solidity 0.8.13; import '@openzeppelin/contracts/access/AccessControl.sol'; import '@openzeppelin/contracts/token/ERC20/ERC20.sol'; contract CyanVaultTokenV1 is AccessControl, ERC20 { bytes32 public constant CYAN_VAULT_ROLE = keccak256('CYAN_VAULT_ROLE'); constructor( string memory name, string memory symbol, uint256 initialSupply, address cyanSuperAdmin ) ERC20(name, symbol) { _mint(cyanSuperAdmin, initialSupply); _setupRole(DEFAULT_ADMIN_ROLE, cyanSuperAdmin); _setupRole(DEFAULT_ADMIN_ROLE, msg.sender); } function mint(address to, uint256 amount) external onlyRole(CYAN_VAULT_ROLE) { require(to != address(0), 'Mint to the zero address'); _mint(to, amount); } function burn(address from, uint256 amount) external onlyRole(CYAN_VAULT_ROLE) { require(balanceOf(from) >= amount, 'Balance not enough'); _burn(from, amount); } function burnAdminToken(uint256 amount) external onlyRole(DEFAULT_ADMIN_ROLE) { require(balanceOf(msg.sender) >= amount, 'Balance not enough'); _burn(msg.sender, amount); } }
// SPDX-License-Identifier: MIT pragma solidity 0.8.13; interface IStableSwapSTETH { /** * @notice Perform an exchange between two coins * @dev Index values can be found via the `coins` public getter method * @param i Index value for the coin to send * @param j Index valie of the coin to recieve * @param dx Amount of `i` being exchanged * @param min_dy Minimum amount of `j` to receive * @return Actual amount of `j` received */ function exchange( int128 i, int128 j, uint256 dx, uint256 min_dy ) external payable returns (uint256); function get_dy( int128 i, int128 j, uint256 dx ) external view returns (uint256); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (access/IAccessControl.sol) pragma solidity ^0.8.0; /** * @dev External interface of AccessControl declared to support ERC165 detection. */ interface IAccessControl { /** * @dev Emitted when `newAdminRole` is set as ``role``'s admin role, replacing `previousAdminRole` * * `DEFAULT_ADMIN_ROLE` is the starting admin for all roles, despite * {RoleAdminChanged} not being emitted signaling this. * * _Available since v3.1._ */ event RoleAdminChanged(bytes32 indexed role, bytes32 indexed previousAdminRole, bytes32 indexed newAdminRole); /** * @dev Emitted when `account` is granted `role`. * * `sender` is the account that originated the contract call, an admin role * bearer except when using {AccessControl-_setupRole}. */ event RoleGranted(bytes32 indexed role, address indexed account, address indexed sender); /** * @dev Emitted when `account` is revoked `role`. * * `sender` is the account that originated the contract call: * - if using `revokeRole`, it is the admin role bearer * - if using `renounceRole`, it is the role bearer (i.e. `account`) */ event RoleRevoked(bytes32 indexed role, address indexed account, address indexed sender); /** * @dev Returns `true` if `account` has been granted `role`. */ function hasRole(bytes32 role, address account) external view returns (bool); /** * @dev Returns the admin role that controls `role`. See {grantRole} and * {revokeRole}. * * To change a role's admin, use {AccessControl-_setRoleAdmin}. */ function getRoleAdmin(bytes32 role) external view returns (bytes32); /** * @dev Grants `role` to `account`. * * If `account` had not been already granted `role`, emits a {RoleGranted} * event. * * Requirements: * * - the caller must have ``role``'s admin role. */ function grantRole(bytes32 role, address account) external; /** * @dev Revokes `role` from `account`. * * If `account` had been granted `role`, emits a {RoleRevoked} event. * * Requirements: * * - the caller must have ``role``'s admin role. */ function revokeRole(bytes32 role, address account) external; /** * @dev Revokes `role` from the calling account. * * Roles are often managed via {grantRole} and {revokeRole}: this function's * purpose is to provide a mechanism for accounts to lose their privileges * if they are compromised (such as when a trusted device is misplaced). * * If the calling account had been granted `role`, emits a {RoleRevoked} * event. * * Requirements: * * - the caller must be `account`. */ function renounceRole(bytes32 role, address account) external; }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Context.sol) pragma solidity ^0.8.0; /** * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Strings.sol) pragma solidity ^0.8.0; /** * @dev String operations. */ library Strings { bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef"; /** * @dev Converts a `uint256` to its ASCII `string` decimal representation. */ function toString(uint256 value) internal pure returns (string memory) { // Inspired by OraclizeAPI's implementation - MIT licence // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol if (value == 0) { return "0"; } uint256 temp = value; uint256 digits; while (temp != 0) { digits++; temp /= 10; } bytes memory buffer = new bytes(digits); while (value != 0) { digits -= 1; buffer[digits] = bytes1(uint8(48 + uint256(value % 10))); value /= 10; } return string(buffer); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation. */ function toHexString(uint256 value) internal pure returns (string memory) { if (value == 0) { return "0x00"; } uint256 temp = value; uint256 length = 0; while (temp != 0) { length++; temp >>= 8; } return toHexString(value, length); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length. */ function toHexString(uint256 value, uint256 length) internal pure returns (string memory) { bytes memory buffer = new bytes(2 * length + 2); buffer[0] = "0"; buffer[1] = "x"; for (uint256 i = 2 * length + 1; i > 1; --i) { buffer[i] = _HEX_SYMBOLS[value & 0xf]; value >>= 4; } require(value == 0, "Strings: hex length insufficient"); return string(buffer); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol) pragma solidity ^0.8.0; import "./IERC165.sol"; /** * @dev Implementation of the {IERC165} interface. * * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check * for the additional interface id that will be supported. For example: * * ```solidity * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId); * } * ``` * * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation. */ abstract contract ERC165 is IERC165 { /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IERC165).interfaceId; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC165 standard, as defined in the * https://eips.ethereum.org/EIPS/eip-165[EIP]. * * Implementers can declare support of contract interfaces, which can then be * queried by others ({ERC165Checker}). * * For an implementation, see {ERC165}. */ interface IERC165 { /** * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] * to learn more about how these ids are created. * * This function call must use less than 30 000 gas. */ function supportsInterface(bytes4 interfaceId) external view returns (bool); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721Receiver.sol) pragma solidity ^0.8.0; /** * @title ERC721 token receiver interface * @dev Interface for any contract that wants to support safeTransfers * from ERC721 asset contracts. */ interface IERC721Receiver { /** * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom} * by `operator` from `from`, this function is called. * * It must return its Solidity selector to confirm the token transfer. * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted. * * The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`. */ function onERC721Received( address operator, address from, uint256 tokenId, bytes calldata data ) external returns (bytes4); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC20/ERC20.sol) pragma solidity ^0.8.0; import "./IERC20.sol"; import "./extensions/IERC20Metadata.sol"; import "../../utils/Context.sol"; /** * @dev Implementation of the {IERC20} interface. * * 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 {ERC20PresetMinterPauser}. * * TIP: For a detailed writeup see our guide * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How * to implement supply mechanisms]. * * We have followed general OpenZeppelin Contracts guidelines: functions revert * instead 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 Context, IERC20, IERC20Metadata { mapping(address => uint256) private _balances; mapping(address => mapping(address => uint256)) private _allowances; uint256 private _totalSupply; string private _name; string private _symbol; /** * @dev Sets the values for {name} and {symbol}. * * The default value of {decimals} is 18. To select a different value for * {decimals} you should overload it. * * All two of these values are immutable: they can only be set once during * construction. */ constructor(string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; } /** * @dev Returns the name of the token. */ function name() public view virtual override returns (string memory) { return _name; } /** * @dev Returns the symbol of the token, usually a shorter version of the * name. */ function symbol() public view virtual override 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. This is the value {ERC20} uses, unless this function is * overridden; * * NOTE: 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 virtual override returns (uint8) { return 18; } /** * @dev See {IERC20-totalSupply}. */ function totalSupply() public view virtual override returns (uint256) { return _totalSupply; } /** * @dev See {IERC20-balanceOf}. */ function balanceOf(address account) public view virtual override 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 virtual override returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } /** * @dev See {IERC20-allowance}. */ function allowance(address owner, address spender) public view virtual override returns (uint256) { return _allowances[owner][spender]; } /** * @dev See {IERC20-approve}. * * Requirements: * * - `spender` cannot be the zero address. */ function approve(address spender, uint256 amount) public virtual override returns (bool) { _approve(_msgSender(), spender, amount); 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 `amount`. * - the caller must have allowance for ``sender``'s tokens of at least * `amount`. */ function transferFrom( address sender, address recipient, uint256 amount ) public virtual override returns (bool) { _transfer(sender, recipient, amount); uint256 currentAllowance = _allowances[sender][_msgSender()]; require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance"); unchecked { _approve(sender, _msgSender(), currentAllowance - 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 virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender] + 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 virtual returns (bool) { uint256 currentAllowance = _allowances[_msgSender()][spender]; require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero"); unchecked { _approve(_msgSender(), spender, currentAllowance - subtractedValue); } return true; } /** * @dev Moves `amount` of tokens from `sender` to `recipient`. * * This 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 virtual { require(sender != address(0), "ERC20: transfer from the zero address"); require(recipient != address(0), "ERC20: transfer to the zero address"); _beforeTokenTransfer(sender, recipient, amount); uint256 senderBalance = _balances[sender]; require(senderBalance >= amount, "ERC20: transfer amount exceeds balance"); unchecked { _balances[sender] = senderBalance - amount; } _balances[recipient] += amount; emit Transfer(sender, recipient, amount); _afterTokenTransfer(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: * * - `account` cannot be the zero address. */ function _mint(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: mint to the zero address"); _beforeTokenTransfer(address(0), account, amount); _totalSupply += amount; _balances[account] += amount; emit Transfer(address(0), account, amount); _afterTokenTransfer(address(0), account, amount); } /** * @dev Destroys `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 amount) internal virtual { require(account != address(0), "ERC20: burn from the zero address"); _beforeTokenTransfer(account, address(0), amount); uint256 accountBalance = _balances[account]; require(accountBalance >= amount, "ERC20: burn amount exceeds balance"); unchecked { _balances[account] = accountBalance - amount; } _totalSupply -= amount; emit Transfer(account, address(0), amount); _afterTokenTransfer(account, address(0), amount); } /** * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens. * * This 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 amount ) internal virtual { 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); } /** * @dev Hook that is called before any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * will be transferred to `to`. * - when `from` is zero, `amount` tokens will be minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer( address from, address to, uint256 amount ) internal virtual {} /** * @dev Hook that is called after any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * has been transferred to `to`. * - when `from` is zero, `amount` tokens have been minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens have been burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _afterTokenTransfer( address from, address to, uint256 amount ) internal virtual {} }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC20/IERC20.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ 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. * * 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 `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); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol) pragma solidity ^0.8.0; import "../IERC20.sol"; /** * @dev Interface for the optional metadata functions from the ERC20 standard. * * _Available since v4.1._ */ interface IERC20Metadata is IERC20 { /** * @dev Returns the name of the token. */ function name() external view returns (string memory); /** * @dev Returns the symbol of the token. */ function symbol() external view returns (string memory); /** * @dev Returns the decimals places of the token. */ function decimals() external view returns (uint8); }
{ "optimizer": { "enabled": true, "runs": 500 }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } }, "libraries": {} }
Contract Security Audit
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[{"inputs":[{"internalType":"address","name":"cyanVaultTokenAddress","type":"address"},{"internalType":"address","name":"cyanPaymentPlanAddress","type":"address"},{"internalType":"address","name":"stEthTokenAddress","type":"address"},{"internalType":"address","name":"curveStableSwapStEthAddress","type":"address"},{"internalType":"address","name":"cyanSuperAdmin","type":"address"},{"internalType":"uint256","name":"safetyFundPercent","type":"uint256"},{"internalType":"uint256","name":"serviceFeePercent","type":"uint256"}],"stateMutability":"payable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":false,"internalType":"uint256","name":"ethAmount","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"tokenAmount","type":"uint256"}],"name":"DepositETH","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"paymentAmount","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"profitAmount","type":"uint256"}],"name":"Earn","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"ethAmount","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"receivedStEthAmount","type":"uint256"}],"name":"ExchangedEthToStEth","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"stEthAmount","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"receivedEthAmount","type":"uint256"}],"name":"ExchangedStEthToEth","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":true,"internalType":"address","name":"contractAddress","type":"address"},{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"GetDefaultedNFT","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Lend","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"unpaidAmount","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"estimatedPriceOfNFT","type":"uint256"}],"name":"NftDefaulted","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"defaultedAssetsAmount","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"soldAmount","type":"uint256"}],"name":"NftLiquidated","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"account","type":"address"}],"name":"Paused","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"},{"indexed":true,"internalType":"address","name":"from","type":"address"}],"name":"ReceivedETH","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"role","type":"bytes32"},{"indexed":true,"internalType":"bytes32","name":"previousAdminRole","type":"bytes32"},{"indexed":true,"internalType":"bytes32","name":"newAdminRole","type":"bytes32"}],"name":"RoleAdminChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"role","type":"bytes32"},{"indexed":true,"internalType":"address","name":"account","type":"address"},{"indexed":true,"internalType":"address","name":"sender","type":"address"}],"name":"RoleGranted","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"role","type":"bytes32"},{"indexed":true,"internalType":"address","name":"account","type":"address"},{"indexed":true,"internalType":"address","name":"sender","type":"address"}],"name":"RoleRevoked","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"account","type":"address"}],"name":"Unpaused","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"UpdatedDefaultedNFTAssetAmount","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"from","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"to","type":"uint256"}],"name":"UpdatedSafetyFundPercent","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"from","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"to","type":"uint256"}],"name":"UpdatedServiceFeePercent","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":false,"internalType":"uint256","name":"ethAmount","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"tokenAmount","type":"uint256"}],"name":"WithdrawETH","type":"event"},{"stateMutability":"payable","type":"fallback"},{"inputs":[],"name":"CYAN_BALANCER_ROLE","outputs":[{"internalType":"bytes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ity":"nonpayable","type":"function"},{"inputs":[],"name":"paused","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"renounceRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"revokeRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"unpause","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"updateDefaultedNFTAssetAmount","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"safetyFundPercent","type":"uint256"}],"name":"updateSafetyFundPercent","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"serviceFeePercent","type":"uint256"}],"name":"updateServiceFeePercent","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"withdraw","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"contractAddress","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"withdrawAirDroppedERC20","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"contractAddress","type":"address"},{"internalType":"address","name":"from","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"withdrawApprovedERC20","outputs":[],"stateMutability":"nonpayable","type":"function"},{"stateMutability":"payable","type":"receive"}]
Contract Creation Code
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
00000000000000000000000002ebb5924266b0fa7d11a01c019ce4f9c7e95a13000000000000000000000000ae82acbf3cecff7a85582b07b0db8da39d583e07000000000000000000000000ae7ab96520de3a18e5e111b5eaab095312d7fe84000000000000000000000000dc24316b9ae028f1497c275eb9192a3ea0f6702200000000000000000000000059d0cf44afc131db06420b1cf1583286ae7631f900000000000000000000000000000000000000000000000000000000000007d0000000000000000000000000000000000000000000000000000000000000001e
-----Decoded View---------------
Arg [0] : cyanVaultTokenAddress (address): 0x02ebB5924266b0FA7D11a01C019cE4f9c7E95A13
Arg [1] : cyanPaymentPlanAddress (address): 0xAe82aCBf3cECFf7A85582b07B0DB8DA39d583e07
Arg [2] : stEthTokenAddress (address): 0xae7ab96520DE3A18E5e111B5EaAb095312D7fE84
Arg [3] : curveStableSwapStEthAddress (address): 0xDC24316b9AE028F1497c275EB9192a3Ea0f67022
Arg [4] : cyanSuperAdmin (address): 0x59D0Cf44AfC131db06420b1Cf1583286ae7631F9
Arg [5] : safetyFundPercent (uint256): 2000
Arg [6] : serviceFeePercent (uint256): 30
-----Encoded View---------------
7 Constructor Arguments found :
Arg [0] : 00000000000000000000000002ebb5924266b0fa7d11a01c019ce4f9c7e95a13
Arg [1] : 000000000000000000000000ae82acbf3cecff7a85582b07b0db8da39d583e07
Arg [2] : 000000000000000000000000ae7ab96520de3a18e5e111b5eaab095312d7fe84
Arg [3] : 000000000000000000000000dc24316b9ae028f1497c275eb9192a3ea0f67022
Arg [4] : 00000000000000000000000059d0cf44afc131db06420b1cf1583286ae7631f9
Arg [5] : 00000000000000000000000000000000000000000000000000000000000007d0
Arg [6] : 000000000000000000000000000000000000000000000000000000000000001e
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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.