More Info
Private Name Tags
ContractCreator
TokenTracker
Latest 25 from a total of 41 transactions
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Nft Remove | 20088988 | 124 days ago | IN | 0 ETH | 0.00081128 | ||||
Sell | 19952526 | 143 days ago | IN | 0 ETH | 0.00013363 | ||||
Remove | 19952508 | 143 days ago | IN | 0 ETH | 0.00021305 | ||||
Add | 19952501 | 143 days ago | IN | 0.00110956 ETH | 0.00018004 | ||||
Buy | 19952496 | 143 days ago | IN | 0.00223475 ETH | 0.0001179 | ||||
Nft Remove | 19952482 | 143 days ago | IN | 0 ETH | 0.00043289 | ||||
Nft Sell | 19707860 | 177 days ago | IN | 0 ETH | 0.00066094 | ||||
Nft Remove | 18649735 | 326 days ago | IN | 0 ETH | 0.00398686 | ||||
Nft Remove | 18147786 | 396 days ago | IN | 0 ETH | 0.00232141 | ||||
Nft Add | 17320170 | 512 days ago | IN | 0.01007346 ETH | 0.00480214 | ||||
Nft Buy | 17154376 | 535 days ago | IN | 0.11688692 ETH | 0.00771165 | ||||
Transfer | 16913871 | 569 days ago | IN | 0 ETH | 0.00067031 | ||||
Remove | 16913857 | 569 days ago | IN | 0 ETH | 0.00147151 | ||||
Nft Sell | 16844692 | 579 days ago | IN | 0 ETH | 0.00402306 | ||||
Nft Remove | 16765557 | 590 days ago | IN | 0 ETH | 0.00514352 | ||||
Nft Add | 16753859 | 592 days ago | IN | 0.15925272 ETH | 0.00729873 | ||||
Nft Sell | 16732366 | 595 days ago | IN | 0 ETH | 0.00206595 | ||||
Nft Add | 16719334 | 597 days ago | IN | 0.02522588 ETH | 0.00269858 | ||||
Nft Add | 16715850 | 597 days ago | IN | 0.03562554 ETH | 0.00451398 | ||||
Nft Add | 16676269 | 603 days ago | IN | 0.06286867 ETH | 0.00569916 | ||||
Nft Add | 16623627 | 610 days ago | IN | 0.01256089 ETH | 0.00233233 | ||||
Nft Add | 16610961 | 612 days ago | IN | 0.35168758 ETH | 0.01157823 | ||||
Nft Add | 16604407 | 613 days ago | IN | 0.01212715 ETH | 0.00231399 | ||||
Add | 16597274 | 614 days ago | IN | 0.00242543 ETH | 0.00154924 | ||||
Buy | 16597262 | 614 days ago | IN | 0.00601437 ETH | 0.00116148 |
Latest 25 internal transactions (View All)
Advanced mode:
Parent Transaction Hash | Block | From | To | |||
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20573374 | 56 days ago | 0.00951369 ETH | ||||
20570232 | 57 days ago | 0.00932437 ETH | ||||
20424480 | 77 days ago | 0.00959447 ETH | ||||
20424477 | 77 days ago | 0.00987649 ETH | ||||
20350619 | 87 days ago | 0.01037767 ETH | ||||
20350619 | 87 days ago | 0.01007408 ETH | ||||
20350618 | 87 days ago | 0.0098736 ETH | ||||
20349999 | 87 days ago | 0.01037464 ETH | ||||
20349999 | 87 days ago | 0.01007113 ETH | ||||
20349996 | 87 days ago | 0.00987071 ETH | ||||
20349972 | 87 days ago | 0.0103716 ETH | ||||
20349972 | 87 days ago | 0.01006818 ETH | ||||
20349970 | 87 days ago | 0.00986782 ETH | ||||
20088988 | 124 days ago | 0.01011326 ETH | ||||
19993176 | 137 days ago | 0.01016002 ETH | ||||
19952536 | 143 days ago | 0.01046314 ETH | ||||
19952526 | 143 days ago | 0.01217166 ETH | ||||
19952508 | 143 days ago | 0.01139421 ETH | ||||
19952482 | 143 days ago | 0.01102887 ETH | ||||
19902841 | 150 days ago | 0.01108228 ETH | ||||
19832764 | 160 days ago | 0.01141795 ETH | ||||
19825114 | 161 days ago | 0.01176914 ETH | ||||
19825112 | 161 days ago | 0.01213681 ETH | ||||
19707860 | 177 days ago | 0.01252201 ETH | ||||
19251500 | 241 days ago | 0.02627766 ETH |
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Contract Name:
Pair
Compiler Version
v0.8.17+commit.8df45f5f
Optimization Enabled:
Yes with 100 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: MIT pragma solidity ^0.8.17; import "solmate/tokens/ERC20.sol"; import "solmate/tokens/ERC721.sol"; import "solmate/utils/MerkleProofLib.sol"; import "solmate/utils/SafeTransferLib.sol"; import "solmate/utils/FixedPointMathLib.sol"; import "openzeppelin/utils/math/Math.sol"; import "reservoir-oracle/ReservoirOracle.sol"; import "./LpToken.sol"; import "./Caviar.sol"; import "./StolenNftFilterOracle.sol"; /// @title Pair /// @author out.eth (@outdoteth) /// @notice A pair of an NFT and a base token that can be used to create and trade fractionalized NFTs. contract Pair is ERC20, ERC721TokenReceiver { using SafeTransferLib for address; using SafeTransferLib for ERC20; uint256 public constant CLOSE_GRACE_PERIOD = 7 days; uint256 private constant ONE = 1e18; uint256 private constant MINIMUM_LIQUIDITY = 100_000; address public immutable nft; address public immutable baseToken; // address(0) for ETH bytes32 public immutable merkleRoot; LpToken public immutable lpToken; Caviar public immutable caviar; uint256 public closeTimestamp; event Add(uint256 indexed baseTokenAmount, uint256 indexed fractionalTokenAmount, uint256 indexed lpTokenAmount); event Remove(uint256 indexed baseTokenAmount, uint256 indexed fractionalTokenAmount, uint256 indexed lpTokenAmount); event Buy(uint256 indexed inputAmount, uint256 indexed outputAmount); event Sell(uint256 indexed inputAmount, uint256 indexed outputAmount); event Wrap(uint256[] indexed tokenIds); event Unwrap(uint256[] indexed tokenIds); event Close(uint256 indexed closeTimestamp); event Withdraw(uint256 indexed tokenId); constructor( address _nft, address _baseToken, bytes32 _merkleRoot, string memory pairSymbol, string memory nftName, string memory nftSymbol ) ERC20(string.concat(nftName, " fractional token"), string.concat("f", nftSymbol), 18) { nft = _nft; baseToken = _baseToken; // use address(0) for native ETH merkleRoot = _merkleRoot; lpToken = new LpToken(pairSymbol); caviar = Caviar(msg.sender); } // ************************ // // Core AMM logic // // *********************** // /// @notice Adds liquidity to the pair. /// @param baseTokenAmount The amount of base tokens to add. /// @param fractionalTokenAmount The amount of fractional tokens to add. /// @param minLpTokenAmount The minimum amount of LP tokens to mint. /// @param minPrice The minimum price that the pool should currently be at. /// @param maxPrice The maximum price that the pool should currently be at. /// @param deadline The deadline before the trade expires. /// @return lpTokenAmount The amount of LP tokens minted. function add( uint256 baseTokenAmount, uint256 fractionalTokenAmount, uint256 minLpTokenAmount, uint256 minPrice, uint256 maxPrice, uint256 deadline ) public payable returns (uint256 lpTokenAmount) { // *** Checks *** // // check that the trade has not expired require(deadline == 0 || deadline >= block.timestamp, "Expired"); // check the token amount inputs are not zero require(baseTokenAmount > 0 && fractionalTokenAmount > 0, "Input token amount is zero"); // check that correct eth input was sent - if the baseToken equals address(0) then native ETH is used require(baseToken == address(0) ? msg.value == baseTokenAmount : msg.value == 0, "Invalid ether input"); uint256 lpTokenSupply = lpToken.totalSupply(); // check that the price is within the bounds if there is liquidity in the pool if (lpTokenSupply != 0) { uint256 _price = price(); require(_price >= minPrice && _price <= maxPrice, "Slippage: price out of bounds"); } // calculate the lp token shares to mint lpTokenAmount = addQuote(baseTokenAmount, fractionalTokenAmount, lpTokenSupply); // check that the amount of lp tokens outputted is greater than the min amount require(lpTokenAmount >= minLpTokenAmount, "Slippage: lp token amount out"); // *** Effects *** // // transfer fractional tokens in _transferFrom(msg.sender, address(this), fractionalTokenAmount); // *** Interactions *** // // mint lp tokens to sender lpToken.mint(msg.sender, lpTokenAmount); // transfer first MINIMUM_LIQUIDITY lp tokens to the owner if (lpTokenSupply == 0) { lpToken.mint(caviar.owner(), MINIMUM_LIQUIDITY); } // transfer base tokens in if the base token is not ETH if (baseToken != address(0)) { // transfer base tokens in ERC20(baseToken).safeTransferFrom(msg.sender, address(this), baseTokenAmount); } emit Add(baseTokenAmount, fractionalTokenAmount, lpTokenAmount); } /// @notice Removes liquidity from the pair. /// @param lpTokenAmount The amount of LP tokens to burn. /// @param minBaseTokenOutputAmount The minimum amount of base tokens to receive. /// @param minFractionalTokenOutputAmount The minimum amount of fractional tokens to receive. /// @param deadline The deadline before the trade expires. /// @return baseTokenOutputAmount The amount of base tokens received. /// @return fractionalTokenOutputAmount The amount of fractional tokens received. function remove( uint256 lpTokenAmount, uint256 minBaseTokenOutputAmount, uint256 minFractionalTokenOutputAmount, uint256 deadline ) public returns (uint256 baseTokenOutputAmount, uint256 fractionalTokenOutputAmount) { // *** Checks *** // // check that the trade has not expired require(deadline == 0 || deadline >= block.timestamp, "Expired"); // calculate the output amounts (baseTokenOutputAmount, fractionalTokenOutputAmount) = removeQuote(lpTokenAmount); // check that the base token output amount is greater than the min amount require(baseTokenOutputAmount >= minBaseTokenOutputAmount, "Slippage: base token amount out"); // check that the fractional token output amount is greater than the min amount require(fractionalTokenOutputAmount >= minFractionalTokenOutputAmount, "Slippage: fractional token out"); // *** Effects *** // // transfer fractional tokens to sender _transferFrom(address(this), msg.sender, fractionalTokenOutputAmount); // *** Interactions *** // // burn lp tokens from sender lpToken.burn(msg.sender, lpTokenAmount); if (baseToken == address(0)) { // if base token is native ETH then send ether to sender msg.sender.safeTransferETH(baseTokenOutputAmount); } else { // transfer base tokens to sender ERC20(baseToken).safeTransfer(msg.sender, baseTokenOutputAmount); } emit Remove(baseTokenOutputAmount, fractionalTokenOutputAmount, lpTokenAmount); } /// @notice Buys fractional tokens from the pair. /// @param outputAmount The amount of fractional tokens to buy. /// @param maxInputAmount The maximum amount of base tokens to spend. /// @param deadline The deadline before the trade expires. /// @return inputAmount The amount of base tokens spent. function buy(uint256 outputAmount, uint256 maxInputAmount, uint256 deadline) public payable returns (uint256 inputAmount) { // *** Checks *** // // check that the trade has not expired require(deadline == 0 || deadline >= block.timestamp, "Expired"); // check that correct eth input was sent - if the baseToken equals address(0) then native ETH is used require(baseToken == address(0) ? msg.value == maxInputAmount : msg.value == 0, "Invalid ether input"); // calculate required input amount using xyk invariant inputAmount = buyQuote(outputAmount); // check that the required amount of base tokens is less than the max amount require(inputAmount <= maxInputAmount, "Slippage: amount in"); // *** Effects *** // // transfer fractional tokens to sender _transferFrom(address(this), msg.sender, outputAmount); // *** Interactions *** // if (baseToken == address(0)) { // refund surplus eth uint256 refundAmount = maxInputAmount - inputAmount; if (refundAmount > 0) msg.sender.safeTransferETH(refundAmount); } else { // transfer base tokens in ERC20(baseToken).safeTransferFrom(msg.sender, address(this), inputAmount); } emit Buy(inputAmount, outputAmount); } /// @notice Sells fractional tokens to the pair. /// @param inputAmount The amount of fractional tokens to sell. /// @param deadline The deadline before the trade expires. /// @param minOutputAmount The minimum amount of base tokens to receive. /// @return outputAmount The amount of base tokens received. function sell(uint256 inputAmount, uint256 minOutputAmount, uint256 deadline) public returns (uint256 outputAmount) { // *** Checks *** // // check that the trade has not expired require(deadline == 0 || deadline >= block.timestamp, "Expired"); // calculate output amount using xyk invariant outputAmount = sellQuote(inputAmount); // check that the outputted amount of fractional tokens is greater than the min amount require(outputAmount >= minOutputAmount, "Slippage: amount out"); // *** Effects *** // // transfer fractional tokens from sender _transferFrom(msg.sender, address(this), inputAmount); // *** Interactions *** // if (baseToken == address(0)) { // transfer ether out msg.sender.safeTransferETH(outputAmount); } else { // transfer base tokens out ERC20(baseToken).safeTransfer(msg.sender, outputAmount); } emit Sell(inputAmount, outputAmount); } // ******************** // // Wrap logic // // ******************** // /// @notice Wraps NFTs into fractional tokens. /// @param tokenIds The ids of the NFTs to wrap. /// @param proofs The merkle proofs for the NFTs proving that they can be used in the pair. /// @return fractionalTokenAmount The amount of fractional tokens minted. function wrap(uint256[] calldata tokenIds, bytes32[][] calldata proofs, ReservoirOracle.Message[] calldata messages) public returns (uint256 fractionalTokenAmount) { // *** Checks *** // // check that wrapping is not closed require(closeTimestamp == 0, "Wrap: closed"); // check the tokens exist in the merkle root _validateTokenIds(tokenIds, proofs); // check that the tokens are not stolen with reservoir oracle _validateTokensAreNotStolen(tokenIds, messages); // *** Effects *** // // mint fractional tokens to sender fractionalTokenAmount = tokenIds.length * ONE; _mint(msg.sender, fractionalTokenAmount); // *** Interactions *** // // transfer nfts from sender for (uint256 i = 0; i < tokenIds.length;) { ERC721(nft).safeTransferFrom(msg.sender, address(this), tokenIds[i]); unchecked { i++; } } emit Wrap(tokenIds); } /// @notice Unwraps fractional tokens into NFTs. /// @param tokenIds The ids of the NFTs to unwrap. /// @param withFee Whether to pay a fee for unwrapping or not. /// @return fractionalTokenAmount The amount of fractional tokens burned. function unwrap(uint256[] calldata tokenIds, bool withFee) public returns (uint256 fractionalTokenAmount) { // *** Effects *** // // burn fractional tokens from sender fractionalTokenAmount = tokenIds.length * ONE; _burn(msg.sender, fractionalTokenAmount); // Take the fee if withFee is true if (withFee) { // calculate fee uint256 fee = fractionalTokenAmount * 3 / 1000; // transfer fee from sender _transferFrom(msg.sender, address(this), fee); fractionalTokenAmount += fee; } // transfer nfts to sender for (uint256 i = 0; i < tokenIds.length;) { ERC721(nft).safeTransferFrom(address(this), msg.sender, tokenIds[i]); unchecked { i++; } } emit Unwrap(tokenIds); } // *********************** // // NFT AMM logic // // *********************** // /// @notice nftAdd Adds liquidity to the pair using NFTs. /// @param baseTokenAmount The amount of base tokens to add. /// @param tokenIds The ids of the NFTs to add. /// @param minLpTokenAmount The minimum amount of lp tokens to receive. /// @param minPrice The minimum price of the pair. /// @param maxPrice The maximum price of the pair. /// @param deadline The deadline for the transaction. /// @param proofs The merkle proofs for the NFTs. /// @return lpTokenAmount The amount of lp tokens minted. function nftAdd( uint256 baseTokenAmount, uint256[] calldata tokenIds, uint256 minLpTokenAmount, uint256 minPrice, uint256 maxPrice, uint256 deadline, bytes32[][] calldata proofs, ReservoirOracle.Message[] calldata messages ) public payable returns (uint256 lpTokenAmount) { // wrap the incoming NFTs into fractional tokens uint256 fractionalTokenAmount = wrap(tokenIds, proofs, messages); // add liquidity using the fractional tokens and base tokens lpTokenAmount = add(baseTokenAmount, fractionalTokenAmount, minLpTokenAmount, minPrice, maxPrice, deadline); } /// @notice Removes liquidity from the pair using NFTs. /// @param lpTokenAmount The amount of lp tokens to remove. /// @param minBaseTokenOutputAmount The minimum amount of base tokens to receive. /// @param deadline The deadline before the trade expires. /// @param tokenIds The ids of the NFTs to remove. /// @param withFee Whether to pay a fee for unwrapping or not. /// @return baseTokenOutputAmount The amount of base tokens received. /// @return fractionalTokenOutputAmount The amount of fractional tokens received. function nftRemove( uint256 lpTokenAmount, uint256 minBaseTokenOutputAmount, uint256 deadline, uint256[] calldata tokenIds, bool withFee ) public returns (uint256 baseTokenOutputAmount, uint256 fractionalTokenOutputAmount) { // remove liquidity and send fractional tokens and base tokens to sender (baseTokenOutputAmount, fractionalTokenOutputAmount) = remove(lpTokenAmount, minBaseTokenOutputAmount, tokenIds.length * ONE, deadline); // unwrap the fractional tokens into NFTs and send to sender unwrap(tokenIds, withFee); } /// @notice Buys NFTs from the pair using base tokens. /// @param tokenIds The ids of the NFTs to buy. /// @param maxInputAmount The maximum amount of base tokens to spend. /// @param deadline The deadline before the trade expires. /// @return inputAmount The amount of base tokens spent. function nftBuy(uint256[] calldata tokenIds, uint256 maxInputAmount, uint256 deadline) public payable returns (uint256 inputAmount) { // buy fractional tokens using base tokens inputAmount = buy(tokenIds.length * ONE, maxInputAmount, deadline); // unwrap the fractional tokens into NFTs and send to sender unwrap(tokenIds, false); } /// @notice Sells NFTs to the pair for base tokens. /// @param tokenIds The ids of the NFTs to sell. /// @param minOutputAmount The minimum amount of base tokens to receive. /// @param deadline The deadline before the trade expires. /// @param proofs The merkle proofs for the NFTs. /// @return outputAmount The amount of base tokens received. function nftSell( uint256[] calldata tokenIds, uint256 minOutputAmount, uint256 deadline, bytes32[][] calldata proofs, ReservoirOracle.Message[] calldata messages ) public returns (uint256 outputAmount) { // wrap the incoming NFTs into fractional tokens uint256 inputAmount = wrap(tokenIds, proofs, messages); // sell fractional tokens for base tokens outputAmount = sell(inputAmount, minOutputAmount, deadline); } // ****************************** // // Emergency exit logic // // ****************************** // /// @notice Closes the pair to new wraps. /// @dev Can only be called by the caviar owner. This is used as an emergency exit in case /// the caviar owner suspects that the pair has been compromised. function close() public { // check that the sender is the caviar owner require(caviar.owner() == msg.sender, "Close: not owner"); // set the close timestamp with a grace period closeTimestamp = block.timestamp + CLOSE_GRACE_PERIOD; // remove the pair from the Caviar contract caviar.destroy(nft, baseToken, merkleRoot); emit Close(closeTimestamp); } /// @notice Withdraws a particular NFT from the pair. /// @dev Can only be called by the caviar owner after the close grace period has passed. This /// is used to auction off the NFTs in the pair in case NFTs get stuck due to liquidity /// imbalances. Proceeds from the auction should be distributed pro rata to fractional /// token holders. See documentation for more details. function withdraw(uint256 tokenId) public { // check that the sender is the caviar owner require(caviar.owner() == msg.sender, "Withdraw: not owner"); // check that the close period has been set require(closeTimestamp != 0, "Withdraw not initiated"); // check that the close grace period has passed require(block.timestamp >= closeTimestamp, "Not withdrawable yet"); // transfer the nft to the caviar owner ERC721(nft).safeTransferFrom(address(this), msg.sender, tokenId); emit Withdraw(tokenId); } // ***************** // // Getters // // ***************** // function baseTokenReserves() public view returns (uint256) { return _baseTokenReserves(); } function fractionalTokenReserves() public view returns (uint256) { return balanceOf[address(this)]; } /// @notice The current price of one fractional token in base tokens with 18 decimals of precision. /// @dev Calculated by dividing the base token reserves by the fractional token reserves. /// @return price The price of one fractional token in base tokens * 1e18. function price() public view returns (uint256) { uint256 exponent = baseToken == address(0) ? 18 : (36 - ERC20(baseToken).decimals()); return (_baseTokenReserves() * 10 ** exponent) / fractionalTokenReserves(); } /// @notice The amount of base tokens required to buy a given amount of fractional tokens. /// @dev Calculated using the xyk invariant and a 30bps fee. /// @param outputAmount The amount of fractional tokens to buy. /// @return inputAmount The amount of base tokens required. function buyQuote(uint256 outputAmount) public view returns (uint256) { return FixedPointMathLib.mulDivUp( outputAmount * 1000, baseTokenReserves(), (fractionalTokenReserves() - outputAmount) * 990 ); } /// @notice The amount of base tokens received for selling a given amount of fractional tokens. /// @dev Calculated using the xyk invariant and a 30bps fee. /// @param inputAmount The amount of fractional tokens to sell. /// @return outputAmount The amount of base tokens received. function sellQuote(uint256 inputAmount) public view returns (uint256) { uint256 inputAmountWithFee = inputAmount * 990; return (inputAmountWithFee * baseTokenReserves()) / ((fractionalTokenReserves() * 1000) + inputAmountWithFee); } /// @notice The amount of lp tokens received for adding a given amount of base tokens and fractional tokens. /// @dev Calculated as a share of existing deposits. If there are no existing deposits, then initializes to /// sqrt(baseTokenAmount * fractionalTokenAmount). /// @param baseTokenAmount The amount of base tokens to add. /// @param fractionalTokenAmount The amount of fractional tokens to add. /// @return lpTokenAmount The amount of lp tokens received. function addQuote(uint256 baseTokenAmount, uint256 fractionalTokenAmount, uint256 lpTokenSupply) public view returns (uint256) { if (lpTokenSupply != 0) { // calculate amount of lp tokens as a fraction of existing reserves uint256 baseTokenShare = (baseTokenAmount * lpTokenSupply) / baseTokenReserves(); uint256 fractionalTokenShare = (fractionalTokenAmount * lpTokenSupply) / fractionalTokenReserves(); return Math.min(baseTokenShare, fractionalTokenShare); } else { // if there is no liquidity then init return Math.sqrt(baseTokenAmount * fractionalTokenAmount) - MINIMUM_LIQUIDITY; } } /// @notice The amount of base tokens and fractional tokens received for burning a given amount of lp tokens. /// @dev Calculated as a share of existing deposits. /// @param lpTokenAmount The amount of lp tokens to burn. /// @return baseTokenAmount The amount of base tokens received. /// @return fractionalTokenAmount The amount of fractional tokens received. function removeQuote(uint256 lpTokenAmount) public view returns (uint256, uint256) { uint256 lpTokenSupply = lpToken.totalSupply(); uint256 baseTokenOutputAmount = (baseTokenReserves() * lpTokenAmount) / lpTokenSupply; uint256 fractionalTokenOutputAmount = (fractionalTokenReserves() * lpTokenAmount) / lpTokenSupply; uint256 upperFractionalTokenOutputAmount = (fractionalTokenReserves() * (lpTokenAmount + 1)) / lpTokenSupply; if ( fractionalTokenOutputAmount % 1e18 != 0 && upperFractionalTokenOutputAmount - fractionalTokenOutputAmount <= 1000 && lpTokenSupply > 1e15 ) { fractionalTokenOutputAmount = upperFractionalTokenOutputAmount; } return (baseTokenOutputAmount, fractionalTokenOutputAmount); } // ************************ // // Internal utils // // ************************ // function _transferFrom(address from, address to, uint256 amount) internal returns (bool) { balanceOf[from] -= amount; // Cannot overflow because the sum of all user // balances can't exceed the max uint256 value. unchecked { balanceOf[to] += amount; } emit Transfer(from, to, amount); return true; } function _validateTokensAreNotStolen(uint256[] calldata tokenIds, ReservoirOracle.Message[] calldata messages) internal view { address stolenNftFilterAddress = caviar.stolenNftFilterOracle(); // if filter address is not set then no need to check if nfts are stolen if (stolenNftFilterAddress == address(0)) return; // validate that nfts are not stolen StolenNftFilterOracle(stolenNftFilterAddress).validateTokensAreNotStolen(nft, tokenIds, messages); } /// @dev Validates that the given tokenIds are valid for the contract's merkle root. Reverts /// if any of the tokenId proofs are invalid. function _validateTokenIds(uint256[] calldata tokenIds, bytes32[][] calldata proofs) internal view { // if merkle root is not set then all tokens are valid if (merkleRoot == bytes32(0)) return; // validate merkle proofs against merkle root for (uint256 i = 0; i < tokenIds.length;) { bool isValid = MerkleProofLib.verify( proofs[i], merkleRoot, // double hash to prevent second preimage attacks keccak256(bytes.concat(keccak256(abi.encode(tokenIds[i])))) ); require(isValid, "Invalid merkle proof"); unchecked { i++; } } } /// @dev Returns the current base token reserves. If the base token is ETH then it ignores /// the msg.value that is being sent in the current call context - this is to ensure the /// xyk math is correct in the buy() and add() functions. function _baseTokenReserves() internal view returns (uint256) { return baseToken == address(0) ? address(this).balance - msg.value // subtract the msg.value if the base token is ETH : ERC20(baseToken).balanceOf(address(this)); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (utils/Strings.sol) pragma solidity ^0.8.0; import "./math/Math.sol"; /** * @dev String operations. */ library Strings { bytes16 private constant _SYMBOLS = "0123456789abcdef"; uint8 private constant _ADDRESS_LENGTH = 20; /** * @dev Converts a `uint256` to its ASCII `string` decimal representation. */ function toString(uint256 value) internal pure returns (string memory) { unchecked { uint256 length = Math.log10(value) + 1; string memory buffer = new string(length); uint256 ptr; /// @solidity memory-safe-assembly assembly { ptr := add(buffer, add(32, length)) } while (true) { ptr--; /// @solidity memory-safe-assembly assembly { mstore8(ptr, byte(mod(value, 10), _SYMBOLS)) } value /= 10; if (value == 0) break; } return buffer; } } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation. */ function toHexString(uint256 value) internal pure returns (string memory) { unchecked { return toHexString(value, Math.log256(value) + 1); } } /** * @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] = _SYMBOLS[value & 0xf]; value >>= 4; } require(value == 0, "Strings: hex length insufficient"); return string(buffer); } /** * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation. */ function toHexString(address addr) internal pure returns (string memory) { return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (utils/math/Math.sol) pragma solidity ^0.8.0; /** * @dev Standard math utilities missing in the Solidity language. */ library Math { enum Rounding { Down, // Toward negative infinity Up, // Toward infinity Zero // Toward zero } /** * @dev Returns the largest of two numbers. */ function max(uint256 a, uint256 b) internal pure returns (uint256) { return a > b ? a : b; } /** * @dev Returns the smallest of two numbers. */ function min(uint256 a, uint256 b) internal pure returns (uint256) { return a < b ? a : b; } /** * @dev Returns the average of two numbers. The result is rounded towards * zero. */ function average(uint256 a, uint256 b) internal pure returns (uint256) { // (a + b) / 2 can overflow. return (a & b) + (a ^ b) / 2; } /** * @dev Returns the ceiling of the division of two numbers. * * This differs from standard division with `/` in that it rounds up instead * of rounding down. */ function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) { // (a + b - 1) / b can overflow on addition, so we distribute. return a == 0 ? 0 : (a - 1) / b + 1; } /** * @notice Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or denominator == 0 * @dev Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv) * with further edits by Uniswap Labs also under MIT license. */ function mulDiv( uint256 x, uint256 y, uint256 denominator ) internal pure returns (uint256 result) { unchecked { // 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use // use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256 // variables such that product = prod1 * 2^256 + prod0. uint256 prod0; // Least significant 256 bits of the product uint256 prod1; // Most significant 256 bits of the product assembly { let mm := mulmod(x, y, not(0)) prod0 := mul(x, y) prod1 := sub(sub(mm, prod0), lt(mm, prod0)) } // Handle non-overflow cases, 256 by 256 division. if (prod1 == 0) { return prod0 / denominator; } // Make sure the result is less than 2^256. Also prevents denominator == 0. require(denominator > prod1); /////////////////////////////////////////////// // 512 by 256 division. /////////////////////////////////////////////// // Make division exact by subtracting the remainder from [prod1 prod0]. uint256 remainder; assembly { // Compute remainder using mulmod. remainder := mulmod(x, y, denominator) // Subtract 256 bit number from 512 bit number. prod1 := sub(prod1, gt(remainder, prod0)) prod0 := sub(prod0, remainder) } // Factor powers of two out of denominator and compute largest power of two divisor of denominator. Always >= 1. // See https://cs.stackexchange.com/q/138556/92363. // Does not overflow because the denominator cannot be zero at this stage in the function. uint256 twos = denominator & (~denominator + 1); assembly { // Divide denominator by twos. denominator := div(denominator, twos) // Divide [prod1 prod0] by twos. prod0 := div(prod0, twos) // Flip twos such that it is 2^256 / twos. If twos is zero, then it becomes one. twos := add(div(sub(0, twos), twos), 1) } // Shift in bits from prod1 into prod0. prod0 |= prod1 * twos; // Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such // that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for // four bits. That is, denominator * inv = 1 mod 2^4. uint256 inverse = (3 * denominator) ^ 2; // Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also works // in modular arithmetic, doubling the correct bits in each step. inverse *= 2 - denominator * inverse; // inverse mod 2^8 inverse *= 2 - denominator * inverse; // inverse mod 2^16 inverse *= 2 - denominator * inverse; // inverse mod 2^32 inverse *= 2 - denominator * inverse; // inverse mod 2^64 inverse *= 2 - denominator * inverse; // inverse mod 2^128 inverse *= 2 - denominator * inverse; // inverse mod 2^256 // Because the division is now exact we can divide by multiplying with the modular inverse of denominator. // This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is // less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1 // is no longer required. result = prod0 * inverse; return result; } } /** * @notice Calculates x * y / denominator with full precision, following the selected rounding direction. */ function mulDiv( uint256 x, uint256 y, uint256 denominator, Rounding rounding ) internal pure returns (uint256) { uint256 result = mulDiv(x, y, denominator); if (rounding == Rounding.Up && mulmod(x, y, denominator) > 0) { result += 1; } return result; } /** * @dev Returns the square root of a number. If the number is not a perfect square, the value is rounded down. * * Inspired by Henry S. Warren, Jr.'s "Hacker's Delight" (Chapter 11). */ function sqrt(uint256 a) internal pure returns (uint256) { if (a == 0) { return 0; } // For our first guess, we get the biggest power of 2 which is smaller than the square root of the target. // // We know that the "msb" (most significant bit) of our target number `a` is a power of 2 such that we have // `msb(a) <= a < 2*msb(a)`. This value can be written `msb(a)=2**k` with `k=log2(a)`. // // This can be rewritten `2**log2(a) <= a < 2**(log2(a) + 1)` // → `sqrt(2**k) <= sqrt(a) < sqrt(2**(k+1))` // → `2**(k/2) <= sqrt(a) < 2**((k+1)/2) <= 2**(k/2 + 1)` // // Consequently, `2**(log2(a) / 2)` is a good first approximation of `sqrt(a)` with at least 1 correct bit. uint256 result = 1 << (log2(a) >> 1); // At this point `result` is an estimation with one bit of precision. We know the true value is a uint128, // since it is the square root of a uint256. Newton's method converges quadratically (precision doubles at // every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision // into the expected uint128 result. unchecked { result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; return min(result, a / result); } } /** * @notice Calculates sqrt(a), following the selected rounding direction. */ function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = sqrt(a); return result + (rounding == Rounding.Up && result * result < a ? 1 : 0); } } /** * @dev Return the log in base 2, rounded down, of a positive value. * Returns 0 if given 0. */ function log2(uint256 value) internal pure returns (uint256) { uint256 result = 0; unchecked { if (value >> 128 > 0) { value >>= 128; result += 128; } if (value >> 64 > 0) { value >>= 64; result += 64; } if (value >> 32 > 0) { value >>= 32; result += 32; } if (value >> 16 > 0) { value >>= 16; result += 16; } if (value >> 8 > 0) { value >>= 8; result += 8; } if (value >> 4 > 0) { value >>= 4; result += 4; } if (value >> 2 > 0) { value >>= 2; result += 2; } if (value >> 1 > 0) { result += 1; } } return result; } /** * @dev Return the log in base 2, following the selected rounding direction, of a positive value. * Returns 0 if given 0. */ function log2(uint256 value, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = log2(value); return result + (rounding == Rounding.Up && 1 << result < value ? 1 : 0); } } /** * @dev Return the log in base 10, rounded down, of a positive value. * Returns 0 if given 0. */ function log10(uint256 value) internal pure returns (uint256) { uint256 result = 0; unchecked { if (value >= 10**64) { value /= 10**64; result += 64; } if (value >= 10**32) { value /= 10**32; result += 32; } if (value >= 10**16) { value /= 10**16; result += 16; } if (value >= 10**8) { value /= 10**8; result += 8; } if (value >= 10**4) { value /= 10**4; result += 4; } if (value >= 10**2) { value /= 10**2; result += 2; } if (value >= 10**1) { result += 1; } } return result; } /** * @dev Return the log in base 10, following the selected rounding direction, of a positive value. * Returns 0 if given 0. */ function log10(uint256 value, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = log10(value); return result + (rounding == Rounding.Up && 10**result < value ? 1 : 0); } } /** * @dev Return the log in base 256, rounded down, of a positive value. * Returns 0 if given 0. * * Adding one to the result gives the number of pairs of hex symbols needed to represent `value` as a hex string. */ function log256(uint256 value) internal pure returns (uint256) { uint256 result = 0; unchecked { if (value >> 128 > 0) { value >>= 128; result += 16; } if (value >> 64 > 0) { value >>= 64; result += 8; } if (value >> 32 > 0) { value >>= 32; result += 4; } if (value >> 16 > 0) { value >>= 16; result += 2; } if (value >> 8 > 0) { result += 1; } } return result; } /** * @dev Return the log in base 10, following the selected rounding direction, of a positive value. * Returns 0 if given 0. */ function log256(uint256 value, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = log256(value); return result + (rounding == Rounding.Up && 1 << (result << 3) < value ? 1 : 0); } } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.13; // Inspired by https://github.com/ZeframLou/trustus abstract contract ReservoirOracle { // --- Structs --- struct Message { bytes32 id; bytes payload; // The UNIX timestamp when the message was signed by the oracle uint256 timestamp; // ECDSA signature or EIP-2098 compact signature bytes signature; } // --- Errors --- error InvalidMessage(); // --- Fields --- address public RESERVOIR_ORACLE_ADDRESS; // --- Constructor --- constructor(address reservoirOracleAddress) { RESERVOIR_ORACLE_ADDRESS = reservoirOracleAddress; } // --- Public methods --- function updateReservoirOracleAddress(address newReservoirOracleAddress) public virtual; // --- Internal methods --- function _verifyMessage( bytes32 id, uint256 validFor, Message memory message ) internal view virtual returns (bool success) { // Ensure the message matches the requested id if (id != message.id) { return false; } // Ensure the message timestamp is valid if ( message.timestamp > block.timestamp || message.timestamp + validFor < block.timestamp ) { return false; } bytes32 r; bytes32 s; uint8 v; // Extract the individual signature fields from the signature bytes memory signature = message.signature; if (signature.length == 64) { // EIP-2098 compact signature bytes32 vs; assembly { r := mload(add(signature, 0x20)) vs := mload(add(signature, 0x40)) s := and( vs, 0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff ) v := add(shr(255, vs), 27) } } else if (signature.length == 65) { // ECDSA signature assembly { r := mload(add(signature, 0x20)) s := mload(add(signature, 0x40)) v := byte(0, mload(add(signature, 0x60))) } } else { return false; } address signerAddress = ecrecover( keccak256( abi.encodePacked( "\x19Ethereum Signed Message:\n32", // EIP-712 structured-data hash keccak256( abi.encode( keccak256( "Message(bytes32 id,bytes payload,uint256 timestamp)" ), message.id, keccak256(message.payload), message.timestamp ) ) ) ), v, r, s ); // Ensure the signer matches the designated oracle address return signerAddress == RESERVOIR_ORACLE_ADDRESS; } }
// SPDX-License-Identifier: AGPL-3.0-only pragma solidity >=0.8.0; /// @notice Simple single owner authorization mixin. /// @author Solmate (https://github.com/transmissions11/solmate/blob/main/src/auth/Owned.sol) abstract contract Owned { /*////////////////////////////////////////////////////////////// EVENTS //////////////////////////////////////////////////////////////*/ event OwnershipTransferred(address indexed user, address indexed newOwner); /*////////////////////////////////////////////////////////////// OWNERSHIP STORAGE //////////////////////////////////////////////////////////////*/ address public owner; modifier onlyOwner() virtual { require(msg.sender == owner, "UNAUTHORIZED"); _; } /*////////////////////////////////////////////////////////////// CONSTRUCTOR //////////////////////////////////////////////////////////////*/ constructor(address _owner) { owner = _owner; emit OwnershipTransferred(address(0), _owner); } /*////////////////////////////////////////////////////////////// OWNERSHIP LOGIC //////////////////////////////////////////////////////////////*/ function transferOwnership(address newOwner) public virtual onlyOwner { owner = newOwner; emit OwnershipTransferred(msg.sender, newOwner); } }
// SPDX-License-Identifier: AGPL-3.0-only pragma solidity >=0.8.0; /// @notice Modern and gas efficient ERC20 + EIP-2612 implementation. /// @author Solmate (https://github.com/transmissions11/solmate/blob/main/src/tokens/ERC20.sol) /// @author Modified from Uniswap (https://github.com/Uniswap/uniswap-v2-core/blob/master/contracts/UniswapV2ERC20.sol) /// @dev Do not manually set balances without updating totalSupply, as the sum of all user balances must not exceed it. abstract contract ERC20 { /*////////////////////////////////////////////////////////////// EVENTS //////////////////////////////////////////////////////////////*/ event Transfer(address indexed from, address indexed to, uint256 amount); event Approval(address indexed owner, address indexed spender, uint256 amount); /*////////////////////////////////////////////////////////////// METADATA STORAGE //////////////////////////////////////////////////////////////*/ string public name; string public symbol; uint8 public immutable decimals; /*////////////////////////////////////////////////////////////// ERC20 STORAGE //////////////////////////////////////////////////////////////*/ uint256 public totalSupply; mapping(address => uint256) public balanceOf; mapping(address => mapping(address => uint256)) public allowance; /*////////////////////////////////////////////////////////////// EIP-2612 STORAGE //////////////////////////////////////////////////////////////*/ uint256 internal immutable INITIAL_CHAIN_ID; bytes32 internal immutable INITIAL_DOMAIN_SEPARATOR; mapping(address => uint256) public nonces; /*////////////////////////////////////////////////////////////// CONSTRUCTOR //////////////////////////////////////////////////////////////*/ constructor( string memory _name, string memory _symbol, uint8 _decimals ) { name = _name; symbol = _symbol; decimals = _decimals; INITIAL_CHAIN_ID = block.chainid; INITIAL_DOMAIN_SEPARATOR = computeDomainSeparator(); } /*////////////////////////////////////////////////////////////// ERC20 LOGIC //////////////////////////////////////////////////////////////*/ function approve(address spender, uint256 amount) public virtual returns (bool) { allowance[msg.sender][spender] = amount; emit Approval(msg.sender, spender, amount); return true; } function transfer(address to, uint256 amount) public virtual returns (bool) { balanceOf[msg.sender] -= amount; // Cannot overflow because the sum of all user // balances can't exceed the max uint256 value. unchecked { balanceOf[to] += amount; } emit Transfer(msg.sender, to, amount); return true; } function transferFrom( address from, address to, uint256 amount ) public virtual returns (bool) { uint256 allowed = allowance[from][msg.sender]; // Saves gas for limited approvals. if (allowed != type(uint256).max) allowance[from][msg.sender] = allowed - amount; balanceOf[from] -= amount; // Cannot overflow because the sum of all user // balances can't exceed the max uint256 value. unchecked { balanceOf[to] += amount; } emit Transfer(from, to, amount); return true; } /*////////////////////////////////////////////////////////////// EIP-2612 LOGIC //////////////////////////////////////////////////////////////*/ function permit( address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) public virtual { require(deadline >= block.timestamp, "PERMIT_DEADLINE_EXPIRED"); // Unchecked because the only math done is incrementing // the owner's nonce which cannot realistically overflow. unchecked { address recoveredAddress = ecrecover( keccak256( abi.encodePacked( "\x19\x01", DOMAIN_SEPARATOR(), keccak256( abi.encode( keccak256( "Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)" ), owner, spender, value, nonces[owner]++, deadline ) ) ) ), v, r, s ); require(recoveredAddress != address(0) && recoveredAddress == owner, "INVALID_SIGNER"); allowance[recoveredAddress][spender] = value; } emit Approval(owner, spender, value); } function DOMAIN_SEPARATOR() public view virtual returns (bytes32) { return block.chainid == INITIAL_CHAIN_ID ? INITIAL_DOMAIN_SEPARATOR : computeDomainSeparator(); } function computeDomainSeparator() internal view virtual returns (bytes32) { return keccak256( abi.encode( keccak256("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)"), keccak256(bytes(name)), keccak256("1"), block.chainid, address(this) ) ); } /*////////////////////////////////////////////////////////////// INTERNAL MINT/BURN LOGIC //////////////////////////////////////////////////////////////*/ function _mint(address to, uint256 amount) internal virtual { totalSupply += amount; // Cannot overflow because the sum of all user // balances can't exceed the max uint256 value. unchecked { balanceOf[to] += amount; } emit Transfer(address(0), to, amount); } function _burn(address from, uint256 amount) internal virtual { balanceOf[from] -= amount; // Cannot underflow because a user's balance // will never be larger than the total supply. unchecked { totalSupply -= amount; } emit Transfer(from, address(0), amount); } }
// SPDX-License-Identifier: AGPL-3.0-only pragma solidity >=0.8.0; /// @notice Modern, minimalist, and gas efficient ERC-721 implementation. /// @author Solmate (https://github.com/transmissions11/solmate/blob/main/src/tokens/ERC721.sol) abstract contract ERC721 { /*////////////////////////////////////////////////////////////// EVENTS //////////////////////////////////////////////////////////////*/ event Transfer(address indexed from, address indexed to, uint256 indexed id); event Approval(address indexed owner, address indexed spender, uint256 indexed id); event ApprovalForAll(address indexed owner, address indexed operator, bool approved); /*////////////////////////////////////////////////////////////// METADATA STORAGE/LOGIC //////////////////////////////////////////////////////////////*/ string public name; string public symbol; function tokenURI(uint256 id) public view virtual returns (string memory); /*////////////////////////////////////////////////////////////// ERC721 BALANCE/OWNER STORAGE //////////////////////////////////////////////////////////////*/ mapping(uint256 => address) internal _ownerOf; mapping(address => uint256) internal _balanceOf; function ownerOf(uint256 id) public view virtual returns (address owner) { require((owner = _ownerOf[id]) != address(0), "NOT_MINTED"); } function balanceOf(address owner) public view virtual returns (uint256) { require(owner != address(0), "ZERO_ADDRESS"); return _balanceOf[owner]; } /*////////////////////////////////////////////////////////////// ERC721 APPROVAL STORAGE //////////////////////////////////////////////////////////////*/ mapping(uint256 => address) public getApproved; mapping(address => mapping(address => bool)) public isApprovedForAll; /*////////////////////////////////////////////////////////////// CONSTRUCTOR //////////////////////////////////////////////////////////////*/ constructor(string memory _name, string memory _symbol) { name = _name; symbol = _symbol; } /*////////////////////////////////////////////////////////////// ERC721 LOGIC //////////////////////////////////////////////////////////////*/ function approve(address spender, uint256 id) public virtual { address owner = _ownerOf[id]; require(msg.sender == owner || isApprovedForAll[owner][msg.sender], "NOT_AUTHORIZED"); getApproved[id] = spender; emit Approval(owner, spender, id); } function setApprovalForAll(address operator, bool approved) public virtual { isApprovedForAll[msg.sender][operator] = approved; emit ApprovalForAll(msg.sender, operator, approved); } function transferFrom( address from, address to, uint256 id ) public virtual { require(from == _ownerOf[id], "WRONG_FROM"); require(to != address(0), "INVALID_RECIPIENT"); require( msg.sender == from || isApprovedForAll[from][msg.sender] || msg.sender == getApproved[id], "NOT_AUTHORIZED" ); // Underflow of the sender's balance is impossible because we check for // ownership above and the recipient's balance can't realistically overflow. unchecked { _balanceOf[from]--; _balanceOf[to]++; } _ownerOf[id] = to; delete getApproved[id]; emit Transfer(from, to, id); } function safeTransferFrom( address from, address to, uint256 id ) public virtual { transferFrom(from, to, id); require( to.code.length == 0 || ERC721TokenReceiver(to).onERC721Received(msg.sender, from, id, "") == ERC721TokenReceiver.onERC721Received.selector, "UNSAFE_RECIPIENT" ); } function safeTransferFrom( address from, address to, uint256 id, bytes calldata data ) public virtual { transferFrom(from, to, id); require( to.code.length == 0 || ERC721TokenReceiver(to).onERC721Received(msg.sender, from, id, data) == ERC721TokenReceiver.onERC721Received.selector, "UNSAFE_RECIPIENT" ); } /*////////////////////////////////////////////////////////////// ERC165 LOGIC //////////////////////////////////////////////////////////////*/ function supportsInterface(bytes4 interfaceId) public view virtual returns (bool) { return interfaceId == 0x01ffc9a7 || // ERC165 Interface ID for ERC165 interfaceId == 0x80ac58cd || // ERC165 Interface ID for ERC721 interfaceId == 0x5b5e139f; // ERC165 Interface ID for ERC721Metadata } /*////////////////////////////////////////////////////////////// INTERNAL MINT/BURN LOGIC //////////////////////////////////////////////////////////////*/ function _mint(address to, uint256 id) internal virtual { require(to != address(0), "INVALID_RECIPIENT"); require(_ownerOf[id] == address(0), "ALREADY_MINTED"); // Counter overflow is incredibly unrealistic. unchecked { _balanceOf[to]++; } _ownerOf[id] = to; emit Transfer(address(0), to, id); } function _burn(uint256 id) internal virtual { address owner = _ownerOf[id]; require(owner != address(0), "NOT_MINTED"); // Ownership check above ensures no underflow. unchecked { _balanceOf[owner]--; } delete _ownerOf[id]; delete getApproved[id]; emit Transfer(owner, address(0), id); } /*////////////////////////////////////////////////////////////// INTERNAL SAFE MINT LOGIC //////////////////////////////////////////////////////////////*/ function _safeMint(address to, uint256 id) internal virtual { _mint(to, id); require( to.code.length == 0 || ERC721TokenReceiver(to).onERC721Received(msg.sender, address(0), id, "") == ERC721TokenReceiver.onERC721Received.selector, "UNSAFE_RECIPIENT" ); } function _safeMint( address to, uint256 id, bytes memory data ) internal virtual { _mint(to, id); require( to.code.length == 0 || ERC721TokenReceiver(to).onERC721Received(msg.sender, address(0), id, data) == ERC721TokenReceiver.onERC721Received.selector, "UNSAFE_RECIPIENT" ); } } /// @notice A generic interface for a contract which properly accepts ERC721 tokens. /// @author Solmate (https://github.com/transmissions11/solmate/blob/main/src/tokens/ERC721.sol) abstract contract ERC721TokenReceiver { function onERC721Received( address, address, uint256, bytes calldata ) external virtual returns (bytes4) { return ERC721TokenReceiver.onERC721Received.selector; } }
// SPDX-License-Identifier: AGPL-3.0-only pragma solidity >=0.8.0; /// @notice Arithmetic library with operations for fixed-point numbers. /// @author Solmate (https://github.com/transmissions11/solmate/blob/main/src/utils/FixedPointMathLib.sol) /// @author Inspired by USM (https://github.com/usmfum/USM/blob/master/contracts/WadMath.sol) library FixedPointMathLib { /*////////////////////////////////////////////////////////////// SIMPLIFIED FIXED POINT OPERATIONS //////////////////////////////////////////////////////////////*/ uint256 internal constant MAX_UINT256 = 2**256 - 1; uint256 internal constant WAD = 1e18; // The scalar of ETH and most ERC20s. function mulWadDown(uint256 x, uint256 y) internal pure returns (uint256) { return mulDivDown(x, y, WAD); // Equivalent to (x * y) / WAD rounded down. } function mulWadUp(uint256 x, uint256 y) internal pure returns (uint256) { return mulDivUp(x, y, WAD); // Equivalent to (x * y) / WAD rounded up. } function divWadDown(uint256 x, uint256 y) internal pure returns (uint256) { return mulDivDown(x, WAD, y); // Equivalent to (x * WAD) / y rounded down. } function divWadUp(uint256 x, uint256 y) internal pure returns (uint256) { return mulDivUp(x, WAD, y); // Equivalent to (x * WAD) / y rounded up. } /*////////////////////////////////////////////////////////////// LOW LEVEL FIXED POINT OPERATIONS //////////////////////////////////////////////////////////////*/ function mulDivDown( uint256 x, uint256 y, uint256 denominator ) internal pure returns (uint256 z) { assembly { // Equivalent to require(denominator != 0 && (y == 0 || x <= type(uint256).max / y)) if iszero(mul(denominator, iszero(mul(y, gt(x, div(MAX_UINT256, y)))))) { revert(0, 0) } // Divide x * y by the denominator. z := div(mul(x, y), denominator) } } function mulDivUp( uint256 x, uint256 y, uint256 denominator ) internal pure returns (uint256 z) { assembly { // Equivalent to require(denominator != 0 && (y == 0 || x <= type(uint256).max / y)) if iszero(mul(denominator, iszero(mul(y, gt(x, div(MAX_UINT256, y)))))) { revert(0, 0) } // If x * y modulo the denominator is strictly greater than 0, // 1 is added to round up the division of x * y by the denominator. z := add(gt(mod(mul(x, y), denominator), 0), div(mul(x, y), denominator)) } } function rpow( uint256 x, uint256 n, uint256 scalar ) internal pure returns (uint256 z) { assembly { switch x case 0 { switch n case 0 { // 0 ** 0 = 1 z := scalar } default { // 0 ** n = 0 z := 0 } } default { switch mod(n, 2) case 0 { // If n is even, store scalar in z for now. z := scalar } default { // If n is odd, store x in z for now. z := x } // Shifting right by 1 is like dividing by 2. let half := shr(1, scalar) for { // Shift n right by 1 before looping to halve it. n := shr(1, n) } n { // Shift n right by 1 each iteration to halve it. n := shr(1, n) } { // Revert immediately if x ** 2 would overflow. // Equivalent to iszero(eq(div(xx, x), x)) here. if shr(128, x) { revert(0, 0) } // Store x squared. let xx := mul(x, x) // Round to the nearest number. let xxRound := add(xx, half) // Revert if xx + half overflowed. if lt(xxRound, xx) { revert(0, 0) } // Set x to scaled xxRound. x := div(xxRound, scalar) // If n is even: if mod(n, 2) { // Compute z * x. let zx := mul(z, x) // If z * x overflowed: if iszero(eq(div(zx, x), z)) { // Revert if x is non-zero. if iszero(iszero(x)) { revert(0, 0) } } // Round to the nearest number. let zxRound := add(zx, half) // Revert if zx + half overflowed. if lt(zxRound, zx) { revert(0, 0) } // Return properly scaled zxRound. z := div(zxRound, scalar) } } } } } /*////////////////////////////////////////////////////////////// GENERAL NUMBER UTILITIES //////////////////////////////////////////////////////////////*/ function sqrt(uint256 x) internal pure returns (uint256 z) { assembly { let y := x // We start y at x, which will help us make our initial estimate. z := 181 // The "correct" value is 1, but this saves a multiplication later. // This segment is to get a reasonable initial estimate for the Babylonian method. With a bad // start, the correct # of bits increases ~linearly each iteration instead of ~quadratically. // We check y >= 2^(k + 8) but shift right by k bits // each branch to ensure that if x >= 256, then y >= 256. if iszero(lt(y, 0x10000000000000000000000000000000000)) { y := shr(128, y) z := shl(64, z) } if iszero(lt(y, 0x1000000000000000000)) { y := shr(64, y) z := shl(32, z) } if iszero(lt(y, 0x10000000000)) { y := shr(32, y) z := shl(16, z) } if iszero(lt(y, 0x1000000)) { y := shr(16, y) z := shl(8, z) } // Goal was to get z*z*y within a small factor of x. More iterations could // get y in a tighter range. Currently, we will have y in [256, 256*2^16). // We ensured y >= 256 so that the relative difference between y and y+1 is small. // That's not possible if x < 256 but we can just verify those cases exhaustively. // Now, z*z*y <= x < z*z*(y+1), and y <= 2^(16+8), and either y >= 256, or x < 256. // Correctness can be checked exhaustively for x < 256, so we assume y >= 256. // Then z*sqrt(y) is within sqrt(257)/sqrt(256) of sqrt(x), or about 20bps. // For s in the range [1/256, 256], the estimate f(s) = (181/1024) * (s+1) is in the range // (1/2.84 * sqrt(s), 2.84 * sqrt(s)), with largest error when s = 1 and when s = 256 or 1/256. // Since y is in [256, 256*2^16), let a = y/65536, so that a is in [1/256, 256). Then we can estimate // sqrt(y) using sqrt(65536) * 181/1024 * (a + 1) = 181/4 * (y + 65536)/65536 = 181 * (y + 65536)/2^18. // There is no overflow risk here since y < 2^136 after the first branch above. z := shr(18, mul(z, add(y, 65536))) // A mul() is saved from starting z at 181. // Given the worst case multiplicative error of 2.84 above, 7 iterations should be enough. z := shr(1, add(z, div(x, z))) z := shr(1, add(z, div(x, z))) z := shr(1, add(z, div(x, z))) z := shr(1, add(z, div(x, z))) z := shr(1, add(z, div(x, z))) z := shr(1, add(z, div(x, z))) z := shr(1, add(z, div(x, z))) // If x+1 is a perfect square, the Babylonian method cycles between // floor(sqrt(x)) and ceil(sqrt(x)). This statement ensures we return floor. // See: https://en.wikipedia.org/wiki/Integer_square_root#Using_only_integer_division // Since the ceil is rare, we save gas on the assignment and repeat division in the rare case. // If you don't care whether the floor or ceil square root is returned, you can remove this statement. z := sub(z, lt(div(x, z), z)) } } function unsafeMod(uint256 x, uint256 y) internal pure returns (uint256 z) { assembly { // Mod x by y. Note this will return // 0 instead of reverting if y is zero. z := mod(x, y) } } function unsafeDiv(uint256 x, uint256 y) internal pure returns (uint256 r) { assembly { // Divide x by y. Note this will return // 0 instead of reverting if y is zero. r := div(x, y) } } function unsafeDivUp(uint256 x, uint256 y) internal pure returns (uint256 z) { assembly { // Add 1 to x * y if x % y > 0. Note this will // return 0 instead of reverting if y is zero. z := add(gt(mod(x, y), 0), div(x, y)) } } }
// SPDX-License-Identifier: MIT pragma solidity >=0.8.0; /// @notice Gas optimized merkle proof verification library. /// @author Solmate (https://github.com/transmissions11/solmate/blob/main/src/utils/MerkleProofLib.sol) /// @author Modified from Solady (https://github.com/Vectorized/solady/blob/main/src/utils/MerkleProofLib.sol) library MerkleProofLib { function verify( bytes32[] calldata proof, bytes32 root, bytes32 leaf ) internal pure returns (bool isValid) { assembly { if proof.length { // Left shifting by 5 is like multiplying by 32. let end := add(proof.offset, shl(5, proof.length)) // Initialize offset to the offset of the proof in calldata. let offset := proof.offset // Iterate over proof elements to compute root hash. // prettier-ignore for {} 1 {} { // Slot where the leaf should be put in scratch space. If // leaf > calldataload(offset): slot 32, otherwise: slot 0. let leafSlot := shl(5, gt(leaf, calldataload(offset))) // Store elements to hash contiguously in scratch space. // The xor puts calldataload(offset) in whichever slot leaf // is not occupying, so 0 if leafSlot is 32, and 32 otherwise. mstore(leafSlot, leaf) mstore(xor(leafSlot, 32), calldataload(offset)) // Reuse leaf to store the hash to reduce stack operations. leaf := keccak256(0, 64) // Hash both slots of scratch space. offset := add(offset, 32) // Shift 1 word per cycle. // prettier-ignore if iszero(lt(offset, end)) { break } } } isValid := eq(leaf, root) // The proof is valid if the roots match. } } }
// SPDX-License-Identifier: AGPL-3.0-only pragma solidity >=0.8.0; import {ERC20} from "../tokens/ERC20.sol"; /// @notice Safe ETH and ERC20 transfer library that gracefully handles missing return values. /// @author Solmate (https://github.com/transmissions11/solmate/blob/main/src/utils/SafeTransferLib.sol) /// @dev Use with caution! Some functions in this library knowingly create dirty bits at the destination of the free memory pointer. /// @dev Note that none of the functions in this library check that a token has code at all! That responsibility is delegated to the caller. library SafeTransferLib { /*////////////////////////////////////////////////////////////// ETH OPERATIONS //////////////////////////////////////////////////////////////*/ function safeTransferETH(address to, uint256 amount) internal { bool success; assembly { // Transfer the ETH and store if it succeeded or not. success := call(gas(), to, amount, 0, 0, 0, 0) } require(success, "ETH_TRANSFER_FAILED"); } /*////////////////////////////////////////////////////////////// ERC20 OPERATIONS //////////////////////////////////////////////////////////////*/ function safeTransferFrom( ERC20 token, address from, address to, uint256 amount ) internal { bool success; assembly { // Get a pointer to some free memory. let freeMemoryPointer := mload(0x40) // Write the abi-encoded calldata into memory, beginning with the function selector. mstore(freeMemoryPointer, 0x23b872dd00000000000000000000000000000000000000000000000000000000) mstore(add(freeMemoryPointer, 4), from) // Append the "from" argument. mstore(add(freeMemoryPointer, 36), to) // Append the "to" argument. mstore(add(freeMemoryPointer, 68), amount) // Append the "amount" argument. success := and( // Set success to whether the call reverted, if not we check it either // returned exactly 1 (can't just be non-zero data), or had no return data. or(and(eq(mload(0), 1), gt(returndatasize(), 31)), iszero(returndatasize())), // We use 100 because the length of our calldata totals up like so: 4 + 32 * 3. // We use 0 and 32 to copy up to 32 bytes of return data into the scratch space. // Counterintuitively, this call must be positioned second to the or() call in the // surrounding and() call or else returndatasize() will be zero during the computation. call(gas(), token, 0, freeMemoryPointer, 100, 0, 32) ) } require(success, "TRANSFER_FROM_FAILED"); } function safeTransfer( ERC20 token, address to, uint256 amount ) internal { bool success; assembly { // Get a pointer to some free memory. let freeMemoryPointer := mload(0x40) // Write the abi-encoded calldata into memory, beginning with the function selector. mstore(freeMemoryPointer, 0xa9059cbb00000000000000000000000000000000000000000000000000000000) mstore(add(freeMemoryPointer, 4), to) // Append the "to" argument. mstore(add(freeMemoryPointer, 36), amount) // Append the "amount" argument. success := and( // Set success to whether the call reverted, if not we check it either // returned exactly 1 (can't just be non-zero data), or had no return data. or(and(eq(mload(0), 1), gt(returndatasize(), 31)), iszero(returndatasize())), // We use 68 because the length of our calldata totals up like so: 4 + 32 * 2. // We use 0 and 32 to copy up to 32 bytes of return data into the scratch space. // Counterintuitively, this call must be positioned second to the or() call in the // surrounding and() call or else returndatasize() will be zero during the computation. call(gas(), token, 0, freeMemoryPointer, 68, 0, 32) ) } require(success, "TRANSFER_FAILED"); } function safeApprove( ERC20 token, address to, uint256 amount ) internal { bool success; assembly { // Get a pointer to some free memory. let freeMemoryPointer := mload(0x40) // Write the abi-encoded calldata into memory, beginning with the function selector. mstore(freeMemoryPointer, 0x095ea7b300000000000000000000000000000000000000000000000000000000) mstore(add(freeMemoryPointer, 4), to) // Append the "to" argument. mstore(add(freeMemoryPointer, 36), amount) // Append the "amount" argument. success := and( // Set success to whether the call reverted, if not we check it either // returned exactly 1 (can't just be non-zero data), or had no return data. or(and(eq(mload(0), 1), gt(returndatasize(), 31)), iszero(returndatasize())), // We use 68 because the length of our calldata totals up like so: 4 + 32 * 2. // We use 0 and 32 to copy up to 32 bytes of return data into the scratch space. // Counterintuitively, this call must be positioned second to the or() call in the // surrounding and() call or else returndatasize() will be zero during the computation. call(gas(), token, 0, freeMemoryPointer, 68, 0, 32) ) } require(success, "APPROVE_FAILED"); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.17; import "solmate/auth/Owned.sol"; import "./lib/SafeERC20Namer.sol"; import "./Pair.sol"; /// @title caviar.sh /// @author out.eth (@outdoteth) /// @notice An AMM for creating and trading fractionalized NFTs. contract Caviar is Owned { using SafeERC20Namer for address; /// @dev pairs[nft][baseToken][merkleRoot] -> pair mapping(address => mapping(address => mapping(bytes32 => address))) public pairs; /// @dev The stolen nft filter oracle address address public stolenNftFilterOracle; event SetStolenNftFilterOracle(address indexed stolenNftFilterOracle); event Create(address indexed nft, address indexed baseToken, bytes32 indexed merkleRoot); event Destroy(address indexed nft, address indexed baseToken, bytes32 indexed merkleRoot); constructor(address _stolenNftFilterOracle) Owned(msg.sender) { stolenNftFilterOracle = _stolenNftFilterOracle; } /// @notice Sets the stolen nft filter oracle address. /// @param _stolenNftFilterOracle The stolen nft filter oracle address. function setStolenNftFilterOracle(address _stolenNftFilterOracle) public onlyOwner { stolenNftFilterOracle = _stolenNftFilterOracle; emit SetStolenNftFilterOracle(_stolenNftFilterOracle); } /// @notice Creates a new pair. /// @param nft The NFT contract address. /// @param baseToken The base token contract address. /// @param merkleRoot The merkle root for the valid tokenIds. /// @return pair The address of the new pair. function create(address nft, address baseToken, bytes32 merkleRoot) public returns (Pair pair) { // check that the pair doesn't already exist require(pairs[nft][baseToken][merkleRoot] == address(0), "Pair already exists"); require(nft.code.length > 0, "Invalid NFT contract"); require(baseToken.code.length > 0 || baseToken == address(0), "Invalid base token contract"); // deploy the pair string memory baseTokenSymbol = baseToken == address(0) ? "ETH" : baseToken.tokenSymbol(); string memory nftSymbol = nft.tokenSymbol(); string memory nftName = nft.tokenName(); string memory pairSymbol = string.concat(nftSymbol, ":", baseTokenSymbol); pair = new Pair(nft, baseToken, merkleRoot, pairSymbol, nftName, nftSymbol); // save the pair pairs[nft][baseToken][merkleRoot] = address(pair); emit Create(nft, baseToken, merkleRoot); } /// @notice Deletes the pair for the given NFT, base token, and merkle root. /// @param nft The NFT contract address. /// @param baseToken The base token contract address. /// @param merkleRoot The merkle root for the valid tokenIds. function destroy(address nft, address baseToken, bytes32 merkleRoot) public { // check that a pair can only destroy itself require(msg.sender == pairs[nft][baseToken][merkleRoot], "Only pair can destroy itself"); // delete the pair delete pairs[nft][baseToken][merkleRoot]; emit Destroy(nft, baseToken, merkleRoot); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.17; import "solmate/auth/Owned.sol"; import "solmate/tokens/ERC20.sol"; /// @title LP token /// @author out.eth (@outdoteth) /// @notice LP token which is minted and burned by the Pair contract to represent liquidity in the pool. contract LpToken is Owned, ERC20 { constructor(string memory pairSymbol) Owned(msg.sender) ERC20(string.concat(pairSymbol, " LP token"), string.concat("LP-", pairSymbol), 18) {} /// @notice Mints new LP tokens to the given address. /// @param to The address to mint to. /// @param amount The amount to mint. function mint(address to, uint256 amount) public onlyOwner { _mint(to, amount); } /// @notice Burns LP tokens from the given address. /// @param from The address to burn from. /// @param amount The amount to burn. function burn(address from, uint256 amount) public onlyOwner { _burn(from, amount); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.17; import "solmate/auth/Owned.sol"; import "reservoir-oracle/ReservoirOracle.sol"; /// @title StolenNftFilterOracle /// @author out.eth (@outdoteth) /// @notice A contract to check that a set of NFTs are not stolen. contract StolenNftFilterOracle is ReservoirOracle, Owned { bytes32 private constant TOKEN_TYPE_HASH = keccak256("Token(address contract,uint256 tokenId)"); uint256 public cooldownPeriod = 0; uint256 public validFor = 60 minutes; constructor() Owned(msg.sender) ReservoirOracle(0xAeB1D03929bF87F69888f381e73FBf75753d75AF) {} /// @notice Sets the cooldown period. /// @param _cooldownPeriod The cooldown period. function setCooldownPeriod(uint256 _cooldownPeriod) public onlyOwner { cooldownPeriod = _cooldownPeriod; } /// @notice Sets the valid for period. /// @param _validFor The valid for period. function setValidFor(uint256 _validFor) public onlyOwner { validFor = _validFor; } function updateReservoirOracleAddress(address newReservoirOracleAddress) public override onlyOwner { RESERVOIR_ORACLE_ADDRESS = newReservoirOracleAddress; } /// @notice Checks that a set of NFTs are not stolen. /// @param tokenAddress The address of the NFT contract. /// @param tokenIds The ids of the NFTs. /// @param messages The messages signed by the reservoir oracle. function validateTokensAreNotStolen(address tokenAddress, uint256[] calldata tokenIds, Message[] calldata messages) public view { for (uint256 i = 0; i < tokenIds.length; i++) { Message calldata message = messages[i]; // check that the signer is correct and message id matches token id + token address bytes32 expectedMessageId = keccak256(abi.encode(TOKEN_TYPE_HASH, tokenAddress, tokenIds[i])); require(_verifyMessage(expectedMessageId, validFor, message), "Message has invalid signature"); (bool isFlagged, uint256 lastTransferTime) = abi.decode(message.payload, (bool, uint256)); // check that the NFT is not stolen require(!isFlagged, "NFT is flagged as suspicious"); // check that the NFT was not transferred too recently require(lastTransferTime + cooldownPeriod < block.timestamp, "NFT was transferred too recently"); } } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.17; import "openzeppelin/utils/Strings.sol"; // modified from https://github.com/Uniswap/solidity-lib/blob/master/contracts/libraries/SafeERC20Namer.sol // produces token descriptors from inconsistent or absent ERC20 symbol implementations that can return string or bytes32 // this library will always produce a string symbol to represent the token library SafeERC20Namer { function bytes32ToString(bytes32 x) private pure returns (string memory) { bytes memory bytesString = new bytes(32); uint256 charCount = 0; for (uint256 j = 0; j < 32; j++) { bytes1 char = x[j]; if (char != 0) { bytesString[charCount] = char; charCount++; } } bytes memory bytesStringTrimmed = new bytes(charCount); for (uint256 j = 0; j < charCount; j++) { bytesStringTrimmed[j] = bytesString[j]; } return string(bytesStringTrimmed); } // uses a heuristic to produce a token name from the address // the heuristic returns the full hex of the address string function addressToName(address token) private pure returns (string memory) { return Strings.toHexString(uint160(token)); } // uses a heuristic to produce a token symbol from the address // the heuristic returns the first 4 hex of the address string function addressToSymbol(address token) private pure returns (string memory) { return Strings.toHexString(uint160(token) >> (160 - 4 * 4)); } // calls an external view token contract method that returns a symbol or name, and parses the output into a string function callAndParseStringReturn(address token, bytes4 selector) private view returns (string memory) { (bool success, bytes memory data) = token.staticcall(abi.encodeWithSelector(selector)); // if not implemented, or returns empty data, return empty string if (!success || data.length == 0) { return ""; } // bytes32 data always has length 32 if (data.length == 32) { bytes32 decoded = abi.decode(data, (bytes32)); return bytes32ToString(decoded); } else if (data.length > 64) { return abi.decode(data, (string)); } return ""; } // attempts to extract the token symbol. if it does not implement symbol, returns a symbol derived from the address function tokenSymbol(address token) internal view returns (string memory) { // 0x95d89b41 = bytes4(keccak256("symbol()")) string memory symbol = callAndParseStringReturn(token, 0x95d89b41); if (bytes(symbol).length == 0) { // fallback to 6 uppercase hex of address return addressToSymbol(token); } return symbol; } // attempts to extract the token name. if it does not implement name, returns a name derived from the address function tokenName(address token) internal view returns (string memory) { // 0x06fdde03 = bytes4(keccak256("name()")) string memory name = callAndParseStringReturn(token, 0x06fdde03); if (bytes(name).length == 0) { // fallback to full hex of address return addressToName(token); } return name; } }
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Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
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rnalType":"uint256","name":"deadline","type":"uint256"}],"name":"buy","outputs":[{"internalType":"uint256","name":"inputAmount","type":"uint256"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"outputAmount","type":"uint256"}],"name":"buyQuote","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"caviar","outputs":[{"internalType":"contract Caviar","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"close","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"closeTimestamp","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"decimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"fractionalTokenReserves","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"lpToken","outputs":[{"internalType":"contract LpToken","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"merkleRoot","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"nft","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"baseTokenAmount","type":"uint256"},{"internalType":"uint256[]","name":"tokenIds","type":"uint256[]"},{"internalType":"uint256","name":"minLpTokenAmount","type":"uint256"},{"internalType":"uint256","name":"minPrice","type":"uint256"},{"internalType":"uint256","name":"maxPrice","type":"uint256"},{"internalType":"uint256","name":"deadline","type":"uint256"},{"internalType":"bytes32[][]","name":"proofs","type":"bytes32[][]"},{"components":[{"internalType":"bytes32","name":"id","type":"bytes32"},{"internalType":"bytes","name":"payload","type":"bytes"},{"internalType":"uint256","name":"timestamp","type":"uint256"},{"internalType":"bytes","name":"signature","type":"bytes"}],"internalType":"struct ReservoirOracle.Message[]","name":"messages","type":"tuple[]"}],"name":"nftAdd","outputs":[{"internalType":"uint256","name":"lpTokenAmount","type":"uint256"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256[]","name":"tokenIds","type":"uint256[]"},{"internalType":"uint256","name":"maxInputAmount","type":"uint256"},{"internalType":"uint256","name":"deadline","type":"uint256"}],"name":"nftBuy","outputs":[{"internalType":"uint256","name":"inputAmount","type":"uint256"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"lpTokenAmount","type":"uint256"},{"internalType":"uint256","name":"minBaseTokenOutputAmount","type":"uint256"},{"internalType":"uint256","name":"deadline","type":"uint256"},{"internalType":"uint256[]","name":"tokenIds","type":"uint256[]"},{"internalType":"bool","name":"withFee","type":"bool"}],"name":"nftRemove","outputs":[{"internalType":"uint256","name":"baseTokenOutputAmount","type":"uint256"},{"internalType":"uint256","name":"fractionalTokenOutputAmount","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256[]","name":"tokenIds","type":"uint256[]"},{"internalType":"uint256","name":"minOutputAmount","type":"uint256"},{"internalType":"uint256","name":"deadline","type":"uint256"},{"internalType":"bytes32[][]","name":"proofs","type":"bytes32[][]"},{"components":[{"internalType":"bytes32","name":"id","type":"bytes32"},{"internalType":"bytes","name":"payload","type":"bytes"},{"internalType":"uint256","name":"timestamp","type":"uint256"},{"internalType":"bytes","name":"signature","type":"bytes"}],"internalType":"struct ReservoirOracle.Message[]","name":"messages","type":"tuple[]"}],"name":"nftSell","outputs":[{"internalType":"uint256","name":"outputAmount","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"nonces","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"address","name":"","type":"address"},{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"bytes","name":"","type":"bytes"}],"name":"onERC721Received","outputs":[{"internalType":"bytes4","name":"","type":"bytes4"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"},{"internalType":"uint256","name":"deadline","type":"uint256"},{"internalType":"uint8","name":"v","type":"uint8"},{"internalType":"bytes32","name":"r","type":"bytes32"},{"internalType":"bytes32","name":"s","type":"bytes32"}],"name":"permit","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"price","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"lpTokenAmount","type":"uint256"},{"internalType":"uint256","name":"minBaseTokenOutputAmount","type":"uint256"},{"internalType":"uint256","name":"minFractionalTokenOutputAmount","type":"uint256"},{"internalType":"uint256","name":"deadline","type":"uint256"}],"name":"remove","outputs":[{"internalType":"uint256","name":"baseTokenOutputAmount","type":"uint256"},{"internalType":"uint256","name":"fractionalTokenOutputAmount","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"lpTokenAmount","type":"uint256"}],"name":"removeQuote","outputs":[{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"inputAmount","type":"uint256"},{"internalType":"uint256","name":"minOutputAmount","type":"uint256"},{"internalType":"uint256","name":"deadline","type":"uint256"}],"name":"sell","outputs":[{"internalType":"uint256","name":"outputAmount","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"inputAmount","type":"uint256"}],"name":"sellQuote","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256[]","name":"tokenIds","type":"uint256[]"},{"internalType":"bool","name":"withFee","type":"bool"}],"name":"unwrap","outputs":[{"internalType":"uint256","name":"fractionalTokenAmount","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"withdraw","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256[]","name":"tokenIds","type":"uint256[]"},{"internalType":"bytes32[][]","name":"proofs","type":"bytes32[][]"},{"components":[{"internalType":"bytes32","name":"id","type":"bytes32"},{"internalType":"bytes","name":"payload","type":"bytes"},{"internalType":"uint256","name":"timestamp","type":"uint256"},{"internalType":"bytes","name":"signature","type":"bytes"}],"internalType":"struct ReservoirOracle.Message[]","name":"messages","type":"tuple[]"}],"name":"wrap","outputs":[{"internalType":"uint256","name":"fractionalTokenAmount","type":"uint256"}],"stateMutability":"nonpayable","type":"function"}]
Contract Creation Code
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
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
-----Decoded View---------------
Arg [0] : _nft (address): 0xda64C62254E6ffE6783Dd00472559A1744512846
Arg [1] : _baseToken (address): 0x0000000000000000000000000000000000000000
Arg [2] : _merkleRoot (bytes32): 0x0000000000000000000000000000000000000000000000000000000000000000
Arg [3] : pairSymbol (string): GM:ETH
Arg [4] : nftName (string): Good Minds
Arg [5] : nftSymbol (string): GM
-----Encoded View---------------
12 Constructor Arguments found :
Arg [0] : 000000000000000000000000da64c62254e6ffe6783dd00472559a1744512846
Arg [1] : 0000000000000000000000000000000000000000000000000000000000000000
Arg [2] : 0000000000000000000000000000000000000000000000000000000000000000
Arg [3] : 00000000000000000000000000000000000000000000000000000000000000c0
Arg [4] : 0000000000000000000000000000000000000000000000000000000000000100
Arg [5] : 0000000000000000000000000000000000000000000000000000000000000140
Arg [6] : 0000000000000000000000000000000000000000000000000000000000000006
Arg [7] : 474d3a4554480000000000000000000000000000000000000000000000000000
Arg [8] : 000000000000000000000000000000000000000000000000000000000000000a
Arg [9] : 476f6f64204d696e647300000000000000000000000000000000000000000000
Arg [10] : 0000000000000000000000000000000000000000000000000000000000000002
Arg [11] : 474d000000000000000000000000000000000000000000000000000000000000
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Multichain Portfolio | 27 Chains
Chain | Token | Portfolio % | Price | Amount | Value |
---|---|---|---|---|---|
ETH | Ether (ETH) | 100.00% | $2,615.91 | 0.666 | $1,742.16 |
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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.