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ERC-721
NFT
Overview
Max Total Supply
8,888 CHF
Holders
2,594
Market
Volume (24H)
N/A
Min Price (24H)
N/A
Max Price (24H)
N/A
Other Info
Token Contract
Balance
1 CHFLoading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
---|
Contract Name:
ChubbiFren
Compiler Version
v0.8.4+commit.c7e474f2
Optimization Enabled:
Yes with 8000 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "@openzeppelin/contracts/utils/math/SafeMath.sol"; import "./ChubbiAuction.sol"; /** * @title ChubbiAuction * ChubbiFren - The main contract, */ contract ChubbiFren is ChubbiAuction { constructor( string memory _name, string memory _symbol, address _proxyRegistryAddress ) ChubbiAuction(_name, _symbol, _proxyRegistryAddress, 8888) { setBaseTokenURI("https://www.chubbiverse.com/api/meta/1/"); reservations[0x0eC5c1691219ffDfC50B6d4E3Bfb1B60b7eD8D5E] = 10; reservations[0x7788238091052072d5969Ac7452E46e94B23f7A3] = 5; reservations[0x593aB4f8412575d4B2EA36d373C04956A8Fbd3cD] = 5; reservations[0xFA6e1eFeD2FcE1337c6b2c0C0E7bFAa3927E6F23] = 5; reservations[0xCAe400e06B6D7d1632538C730223e9c06eE69f12] = 5; reservations[0x14929281cb3dC7F7E47C95a977C05ed4B85489d0] = 50; reservations[0x1Ce99932fD278E00911814dC4bd403e1293d8ED2] = 5; reservations[0x387Af9Df1a190CfAF420a0470A55f5cE22C5D356] = 5; reservations[0xc55ba66cab0298B3A67e1D0bf6A1613907941B09] = 10; reservations[0xea7cEB44004Ce65DEaD925e6Ae12fEdc30c88267] = 10; reservations[0x91609451B6a5775608787f3Da9501104935D3b25] = 15; reservations[0x60EA59C40efc5b297d3b019FA26c217761d0c266] = 5; reservations[0x926d2562Cd25E2a8988449F61271c19fF65d2C04] = 10; reservations[0x90E1F595Abc8D731cf82031c974aDD334B84b29E] = 20; reservations[0x7F7b32c998083D66De56602D75bC820b768C721B] = 5; reservations[0xd8Bca4f14B89d7BE3a5fd5AD97AAA6775D11FC46] = 5; reservations[0xA98220f6dC5DFcA27ff19605a0a6D3E1dDE4CFE8] = 5; reservations[0xEF30fA2138A725523451688279b11216B0505E98] = 15; reservations[0x5D89737E854c860d25E106C498c6DCA0B516eD7a] = 5; reservations[0xEC080DbeE8F60c8E6d7c3F52e10832718d2b8D5A] = 5; reservations[0x3cf0aCd510F51506D10f28ABb4822238C405Ac61] = 40; // 10 from snapsot, 30 from team reservations[0xe86dad56eE5C8F344cCaF348158C6258A965C8aA] = 5; reservations[0xF13a69F85075972AbB8435c8bBa1f24D91EFB986] = 10; reservations[0x277e1546A1Be3BC1737d0EAb43E6c1c86c0f4207] = 10; reservations[0x0bA516f6142C1cC8B6A6443bEf748e244FeaC99E] = 5; reservations[0x6Ec30Fd91A504Aad948839B985C7263888B2Ad68] = 15; reservations[0x64e714344780B12384597F5bF9aE35F9ADf98863] = 5; reservations[0x26A49F3730e2984E9188E220fC3fa4B6A605EA21] = 10; reservations[0x77C979931AD12d2B55e5E997a440f43660A21ffa] = 10; reservations[0x59b836B2f15C89E1007e011af47607e01C365F71] = 25; reservations[0xFe5573C66273313034F7fF6050c54b5402553716] = 5; reservations[0x2a92280f7572Ee27b50eb81D8Bd644a5aCcf16F6] = 5; reservations[0x3329ca36d37b0DE4228795eFaA490a7763202172] = 5; reservations[0xbBDFDE2786afD8858807bDf617C10F9ad521fAb1] = 5; reservations[0x5BA17875Ea5F3BAA8E9A06aaf973Ba7c21994C40] = 10; reservations[0xd918252c46bf5D399Ce827151B422810388c79ec] = 5; reservations[0xb09548d2ea367b0b0dF0FE1AC0C079F7D5354a50] = 5; reservations[0xde923Df474661dDF3727C913EbFEe3df0b37BEB8] = 5; reservations[0x6A3B82f775D9eFE19518b1F68Fe86FAf0eAf2a90] = 10; reservations[0x80207B6ef45dcD6E2d2f5Bf692320C8b46b6bf09] = 5; reservations[0x1a330bF19B7865935cd675fD827c6cbC742fFE5a] = 35; // 30 from snapshot, 5 from team reservations[0x044DeeAe38e81be36Fe1F0245F4cb14Be0A19Cb0] = 5; reservations[0x06644f3054d2579e8b7425436bB6ab13e91999EB] = 10; reservations[0x606a90DF26ED6b2680aF64fc63E2887a726703d4] = 10; reservations[0xe1b5F0862dc5A2A4e6069C3e31232a34d21Ef2Fb] = 5; reservations[0x6e51817Aa02674FE6bA1a790E23AA720c4843804] = 5; reservations[0xf305F90B19CF66fC2D038f92a26440B66cF858F6] = 5; reservations[0x5D55a50e4A1d7ce19B108aD4a44C60D02fAd9637] = 5; reservations[0xE7f2A881a30a1b9D16BebdbE42B226253B4Ca489] = 5; reservations[0x45A7A6adA84207c11a29305b18E4DBb16Bd1dd7E] = 5; reservations[0x75c8E2dd57927eB0373E8e201ebF582406aDcf45] = 15; reservations[0x923de254c1E93D710CCa6115b63712EDc76CE816] = 25; reservations[0x9cBd60A51b54aB626cDE7861Afe43D2CD82dA327] = 10; // 5 from snapshot, 5 from team reservations[0x1ff13480f8CD08e778755987a648b9D80d78c966] = 5; reservations[0xBe27D73FCf696ECf9Febff0C90F7Ac9e05B0E41A] = 25; reservations[0x94abB1573c83f9a53cAD661514Ed7F0419EC594A] = 5; reservations[0xb71B13b85D2c094B0FDeC64ab891b5BF5f110a8e] = 5; reservations[0x25CD302E37a69D70a6Ef645dAea5A7de38c66E2a] = 10; reservations[0x88cc77f53A077775bcD8067822Ed02Bd12AC4131] = 10; reservations[0x182Eba9213c3A45aEc4a400350EacD2E683f5981] = 5; reservations[0x3082a2dd0028231423a5fB470407a89c024B308d] = 5; reservations[0x642452Bd55591CD954B2987c70e7f2ccC71dE313] = 5; reservations[0xF404Aa7d1eAB3fABA127E57A1E4aFA4D6c31abF8] = 10; reservations[0x6f4d8C05aC656cbb2Edc9aDC14743C123A0EB65b] = 10; // 5 from snapshot, 5 from team reservations[0x108B9595D1fA09A9a228e011D7768c55D8d989AD] = 5; reservations[0x1d69d3CDEbB5c3E2B8b73cC4D49Aa145ecb7950F] = 5; reservations[0x3677C1621D49611811BBca58d9b2ac753bE5b3b6] = 5; reservations[0x868b2BC9416bBd2E110ad99e4F55C1D51212271a] = 5; reservations[0x7FdCA0A469Ea8b50b92322aFc0215b67D56A5e9A] = 5; reservations[0x52e0f7339C1BEd710DBD4D84E78F791eBe2df6b9] = 10; reservations[0x3df6c1D54ad103233B3c74a12042f67239d69f70] = 45; // 15 from snapshot, 30 from team reservations[0xA4c8d9e4Ec5f2831701A81389465498B83f9457d] = 5; reservations[0x8DD6629B2272b4fb384c13E982f8e08Bc8EE001E] = 5; reservations[0x758f9112899834dB1d5dC1860c06900c3d3bd75a] = 10; reservations[0xDCbf721551A937768537458C61005F1CBECb043c] = 5; reservations[0x5Cb58a3fA9B02ae11f443b3Adc231172356EcCd7] = 5; reservations[0x774237c2a8Fd84c0D4D2C97cB03D3B6C87cB0431] = 5; reservations[0x60d727CBfd8Df0af32eFa764ebEc917c59FcEd4F] = 15; reservations[0xa11e95CA2bE0793C5AD0C4FF20bd6dab0992C6a2] = 5; reservations[0x0bd43F463074e731718f970C35b3fa7c8184c642] = 5; reservations[0x68EAbf8B000AbfF6d55Cfa918D2fe0638d4F98af] = 5; reservations[0xc6E999FCCF8bc1CD8BEfcfA10Cf2cC1f3b2612e2] = 5; reservations[0x3c2B4bDCD2F742C55186fc599Cb733a127E2b8ab] = 5; reservations[0x3Ba77787266aE8225805e4b4750fd4E9f800da33] = 20; reservations[0xCfCDd074DC974af94fA2b9d56b6A213c0D96EaF9] = 5; reservations[0xB135c7E7604A8D4723548d9a5F67D98c110E78A8] = 5; reservations[0xBE1e5A07c3Af9b648b2DeC7F193bc0835646725E] = 5; reservations[0xc7bc4Aa98eCe00E4F8feC8Fe7B0591F80aBbc855] = 5; reservations[0x42d3b1e30f39191F6dA2701E31cfc82574ea14D5] = 5; reservations[0x7f55Bd494bed4b4eED2064ECCC1aF75e9d76aD4b] = 5; reservations[0x5765bdEFb7EAD33f4Eb7935C5d5eb130f4299568] = 5; reservations[0x0c5A9cd5c97F716e2E9F3699Bd2905BCA0059867] = 10; reservations[0x5338035c008EA8c4b850052bc8Dad6A33dc2206c] = 15; reservations[0x518aE9dC06AF3A4d2DD1B75E2367C0D23257B320] = 8; // 5 from snapshot, 3 from team reservations[0xd102C5AD3c42bdFBB1762DB4d0e3707ffB7e1486] = 10; reservations[0x8067ea0006949CFF984083A83A56a8B0DEC2eab2] = 5; reservations[0x0f1025f754b3eb32ab3105127b563084BFa03A6F] = 10; reservations[0xbD912A2B4Aeb0BC7D3827d11D621F79D66eaF633] = 5; reservations[0x2d45D1259B4f136F5050CB9dbb3c02253f74c647] = 5; reservations[0xa2BFF706Dd94C8E8284314aAf243D8D99cf723DA] = 5; reservations[0x1D551AcE62be491Fc49E9A6B3d737e51e2c59E8c] = 5; reservations[0x5bEcE23dDf9BDe3e1F735b1b09b5958173D45014] = 10; reservations[0x243AE63fed8680067e16F63546d312AAC1f5d716] = 5; reservations[0x7CcaCab19ee2B7EC643Ef2d436c235A5c1E76Fa9] = 5; reservations[0xDDCCC8CBF91f31FF7639b4E458cF518219eFC7bd] = 5; reservations[0xFac137e6753B1C7b210cd1167F221B61D6Eb4638] = 10; reservations[0x45e2Aa1483A1C02f1E7D07FF904bb1dEd9350aB7] = 5; reservations[0x3b10f088D7a83E92E91D4A84FE2c656AF92a801D] = 5; reservations[0xA6D3a33a1C66083859765b9D6E407D095a908193] = 10; reservations[0xaf9E021FC76c0aFBf4a520152C5Cf792561503B5] = 5; reservations[0xd1B18dD9fCfd0cfaED13D0a107B98B47d3f67eF6] = 5; reservations[0x6514304C439565BC6bF5e60dC69dC355a034E6C3] = 5; reservations[0xA0Acc2aE14c814d97c766aE2582150c415cef1e6] = 5; reservations[0xA309e257Db5C325e4B83510fCc950449447E6BdA] = 5; reservations[0xa48AE1c287fa6DE4581Ca3E00f0a481a1AE80778] = 5; reservations[0xBaEa3Cf94aBd0D6E0F029ef5B0E54E9424A72985] = 10; reservations[0x716eb921F3B346d2C5749B5380dC740d359055D7] = 10; reservations[0x4c6FaaAf155AA05A0AF39Dd51ee9E47042d19C64] = 10; reservations[0x50F620A98f0514F5cA9ff7B44125F632EE7aC84a] = 5; reservations[0x81a4A0655A157B731D06fE0b597F67B5bDDdedf3] = 5; reservations[0xfCAD3475520fb54Fc95305A6549A79170DA8B7C0] = 5; reservations[0xD5b1BF6c5BA8416D699e016BB99646cA5DbAb8d7] = 5; reservations[0x7c7582643E67b443b0c3f82D0513ba3D25c09F92] = 5; reservations[0xcDae1Bab521E6aD0756f41166E1Ac68D4b5Ba55a] = 20; reservations[0x7D551B4Aa5938d18be5C5e9FdE7fECE9566611ba] = 10; reservations[0x6a8b990801daDe9077acB0eA8948D023C72D7060] = 5; reservations[0x0F0eAE91990140C560D4156DB4f00c854Dc8F09E] = 10; reservations[0x409abF69Bcf740a1cEe04f3f330610fd985BE0c3] = 5; reservations[0xb20f6f5F6D624571C000d75bb8081b488f1D9c9a] = 5; reservations[0xb51fBfdAc76132eB819c91b0Bfc5A72913B88329] = 5; reservations[0x392FA612154CCaDd6b3B34048D4De84A4E2e0d8f] = 5; reservations[0xab0e3fE8670583591810689b0a490D8226f0D79B] = 10; reservations[0x078ad2Aa3B4527e4996D087906B2a3DA51BbA122] = 10; reservations[0x34f6e236880D962726Fdb5996f6a0Bce42ea6Ca5] = 5; reservations[0x9874346057faA8C5638694e1c1959f1d4bb48149] = 5; reservations[0x000433708645EaaD9f65687CDbe4033d92f6A6d2] = 5; reservations[0xE85b14f37ed20f775BEeBf90e657d8A050640623] = 5; reservations[0x8104cd18e37f2634257a97338C32EC7BFbfb72bD] = 5; reservations[0x97C6f53B75D8243a7CBC1c3bc491c993842db3b3] = 5; reservations[0x750A31fA07184CAf87b6Cce251d2F0D7928BADde] = 5; reservations[0xfa50E8AE8E380fAd984850F9f2BA7Eb424502d6d] = 5; reservations[0x9631b82269c02a7616d990C0bf9Ba1dC1Bed1a73] = 5; reservations[0xD8CbcFFe51B0364C50d6a0Ac947A61e3118d10D6] = 5; reservations[0x1048fA01899a43821c7aE77Fe96aF45F19A2646B] = 5; reservations[0x9Cb737840CF5538942d1dA5576B50A7005382F13] = 5; reservations[0x96fc154e9f97541e0b9e76fdd162a8Ecd2F2eD7B] = 5; reservations[0xE54c447e47DC308Ff12C478E725C150e1586FfB0] = 10; // 5 from snapshot, 5 from team reservations[0x5101F854F670812f2eBca8f6669AfF324F192218] = 5; reservations[0xc2363b54f8842a4Da3Cd19D6F3b6F9988c72800D] = 5; reservations[0x64c420ABc818E9FCa4a94FF1aD78c5B7E237e44B] = 5; reservations[0x2f6e116E6E4BfF7c00402d6B321192BCc4d797FA] = 5; reservations[0x95B0D143ac845877DFdb7cE07Fc1549D88783d68] = 5; reservations[0x19Eb7FfDcD670Ca917110Bd032463120a5E58C8E] = 5; reservations[0x83E84CC194E595B43dCEDfBFfC3e0358366307f1] = 5; reservations[0x3916bcCF534a200467D546414Bf93A2BF47DD7CD] = 5; reservations[0xa920268fF7Ac82a63fF5070d32401900Ee5626C6] = 5; reservations[0xE62c522b0EeA657414faD0a1893223f54CCD5190] = 5; reservations[0xAE68B4Ec732c534F5d3D0B990af2E3FB7E25FbE3] = 5; reservations[0x8945911b7bd08a9fE75EdCFb94f1a8A4A741b443] = 10; reservations[0x88451FDbdb2d002008136D3626aafdA5e85d4dae] = 5; reservations[0x52713267FE99E268A3Ce0B1A84C3d3dbC7C47F21] = 5; reservations[0x6D938CbE86b4763691f702577d4046F656aCb3c8] = 5; reservations[0x6051BE619c976Bf24ff6053693f696C691cfCd24] = 5; reservations[0x98367D7B9bC02A5207859Ac11F2a9E504cA729E4] = 5; reservations[0xb7608C42C00c87Be4Db7A6D2AF128fd6f0FD74c8] = 5; reservations[0x99999990D598B918799f38163204Bbc30611B6b6] = 5; reservations[0x905f48CbAAAF881Dbee913cE040c3b26d3bbc6D9] = 5; reservations[0x020B899981FA12ad33d6c455d77fe8f53A121464] = 5; reservations[0x5c0E408F03709B89b7F5Fa91E4172425F57C75d2] = 5; reservations[0x51EDb6E986c31D13838f165737Fe3FbA9F689F38] = 300; reservations[0xd6b5E55dd4BEBe68D556EaB12C9916bD4a420406] = 30; reservations[0xd148C895462160a260318A7046f78a29F97F8235] = 30; reservations[0x7156403C0A30d458Bb4b4796e4412E6A22624b30] = 10; reservations[0x13E47EBD58dA3a23ed19d91067168896e6c683F1] = 10; reservations[0xC0f1C68f16363974FCaCE9f25DC76a18B5077a9A] = 5; reservations[0x749C34697bA3ECbbD80C0BD831F513DFD9E2D5a4] = 2; reservations[0xF61AC83177e310e82374f90D5dd00f62FDeA2FBD] = 1; reservations[0x1fC18f965F60625f895434FC536Fa50c705F860c] = 1; reservations[0x9191588a8F3fa3ffF4f7e4D1ca51034d664850FE] = 1; } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; // CAUTION // This version of SafeMath should only be used with Solidity 0.8 or later, // because it relies on the compiler's built in overflow checks. /** * @dev Wrappers over Solidity's arithmetic operations. * * NOTE: `SafeMath` is no longer needed starting with Solidity 0.8. The compiler * now has built in overflow checking. */ library SafeMath { /** * @dev Returns the addition of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { uint256 c = a + b; if (c < a) return (false, 0); return (true, c); } } /** * @dev Returns the substraction of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (b > a) return (false, 0); return (true, a - b); } } /** * @dev Returns the multiplication of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) return (true, 0); uint256 c = a * b; if (c / a != b) return (false, 0); return (true, c); } } /** * @dev Returns the division of two unsigned integers, with a division by zero flag. * * _Available since v3.4._ */ function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (b == 0) return (false, 0); return (true, a / b); } } /** * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag. * * _Available since v3.4._ */ function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) { unchecked { if (b == 0) return (false, 0); return (true, a % b); } } /** * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256) { return a + b; } /** * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { return a - b; } /** * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `*` operator. * * Requirements: * * - Multiplication cannot overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256) { return a * b; } /** * @dev Returns the integer division of two unsigned integers, reverting on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { return a / b; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b) internal pure returns (uint256) { return a % b; } /** * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {trySub}. * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub( uint256 a, uint256 b, string memory errorMessage ) internal pure returns (uint256) { unchecked { require(b <= a, errorMessage); return a - b; } } /** * @dev Returns the integer division of two unsigned integers, reverting with custom message on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div( uint256 a, uint256 b, string memory errorMessage ) internal pure returns (uint256) { unchecked { require(b > 0, errorMessage); return a / b; } } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting with custom message when dividing by zero. * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {tryMod}. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod( uint256 a, uint256 b, string memory errorMessage ) internal pure returns (uint256) { unchecked { require(b > 0, errorMessage); return a % b; } } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "@openzeppelin/contracts/utils/math/Math.sol"; import "@openzeppelin/contracts/utils/math/SafeMath.sol"; import "./ChubbiReserve.sol"; /** * @title ChubbiAuction * ChubbiAuction - A contract that enables tokens to be distributed using a Dutch Auction. */ contract ChubbiAuction is ChubbiReserve { using SafeMath for uint256; bool internal _isAuctionActive; // Events event BidSuccessful( address indexed owner, uint256 amountOfTokens, uint256 totalPrice ); // Auction parameters uint256 public startTime; uint256 public maxPrice; uint256 public minPrice; // The amount of time after price will decrease next. uint256 public constant timeDelta = 10 minutes; // The amount of eth to decrease price by every `timeDelta` uint256 public constant priceDelta = 0.05 ether; // The maximum amount of tokens per bid uint256 public maxTokensPerBid; constructor( string memory _name, string memory _symbol, address _proxyRegistryAddress, uint256 _maxSupply ) ChubbiReserve(_name, _symbol, _proxyRegistryAddress, _maxSupply) { _isAuctionActive = false; maxTokensPerBid = 20; maxPrice = 0.69 ether; minPrice = 0.09 ether; } /** * @dev Set the parameters for the auction. * @param _maxPrice the maximum price of a token in the auction. * @param _minPrice the minimum price of a token in the auction. */ function setAuctionParameters(uint256 _maxPrice, uint256 _minPrice) external onlyOwner { require(!_isAuctionActive, "Auction is active"); require(_maxPrice > _minPrice, "Invalid max price"); require(_minPrice > 0, "Invalid min price"); maxPrice = _maxPrice; minPrice = _minPrice; } /** * @dev Set the maximum number of tokens a user is allowed to bid for in total throughout the whole auction. */ function setMaxTokensPerBid(uint256 _amount) external onlyOwner { require(_amount > 0, "Invalid amount"); maxTokensPerBid = _amount; } // Start & Pause function startAuction() external onlyOwner whenNotPaused { require(!_isAuctionActive, "Auction is active"); startTime = block.timestamp; _isAuctionActive = true; stopReservations(); } function pauseAuction() external onlyOwner { require(_isAuctionActive, "Auction is not active"); _isAuctionActive = false; } // Bidding /** * @dev Get the maximum amount of tokens that can be auctioned. */ function maxAuctionSupply() public view returns (uint256) { return maxSupply - claimed; } /** * @dev Get the amount of tokens that have been auctioned. */ function tokensAuctioned() public view returns (uint256) { return currentSupply() - claimed; } /** * @dev Check is the auction is currently active. */ function isAuctionActive() external view returns (bool) { return _isAuctionActive && tokensAuctioned() < maxAuctionSupply(); } /** * @dev Bid for tokens. * @param _tokenAmount the amount of tokens to bid. */ function bid(uint256 _tokenAmount) external payable whenNotPaused { require(_isAuctionActive, "Auction is not active"); require(tokensAuctioned() < maxAuctionSupply(), "Auction completed"); require(_tokenAmount <= maxTokensPerBid, "Bid limit exceeded"); // Ensure that user can always buy the tokens closer to the end of the auction uint256 tokensRemaining = maxAuctionSupply().sub(tokensAuctioned()); uint256 amountToBuy = Math.min(_tokenAmount, tokensRemaining); assert(amountToBuy <= tokensRemaining); // Ensure user can afford the tokens uint256 totalPrice = getCurrentPrice().mul(amountToBuy); require(totalPrice <= msg.value, "Not enough ETH"); // Give them the tokens! for (uint256 i = 0; i < amountToBuy; i++) { _mintTo(msg.sender); } // Let the world know! emit BidSuccessful(msg.sender, amountToBuy, totalPrice); // Return the change uint256 change = msg.value.sub(totalPrice); payable(msg.sender).transfer(change); } /** * @dev Get the current price of a token. */ function getCurrentPrice() public view returns (uint256) { if (!_isAuctionActive) { return maxPrice; } return _getCurrentPrice(startTime, block.timestamp, maxPrice, minPrice); } /** * @dev Get the current price of a token. * We make this virtual so we can override it in tests. * @param _startTime the starting timestamp. * @param _currentTime the current timestamp. * @param _maxPrice the maximum price of the token. * @param _minPrice the minimum price of the token. */ function _getCurrentPrice( uint256 _startTime, uint256 _currentTime, uint256 _maxPrice, uint256 _minPrice ) internal view virtual returns (uint256) { require(_maxPrice > _minPrice, "Invalid max price"); if (_currentTime < _startTime) { return _maxPrice; } // Drop by 0.05 eth every 10 minutes uint256 priceDiff = _currentTime.sub(_startTime).div(timeDelta).mul( priceDelta ); priceDiff = Math.min(priceDiff, _maxPrice); return Math.max(_minPrice, _maxPrice.sub(priceDiff)); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /** * @dev Standard math utilities missing in the Solidity language. */ library Math { /** * @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 / b + (a % b == 0 ? 0 : 1); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "@openzeppelin/contracts/utils/math/Math.sol"; import "@openzeppelin/contracts/utils/math/SafeMath.sol"; import "./ChubbiBase.sol"; /** * @title ChubbiReserve * ChubbiReserve - A contract that allows token reservations and claiming. */ contract ChubbiReserve is ChubbiBase { using SafeMath for uint256; // Events event Claimed(address indexed owner, uint256 amount); uint256 public claimed; // A mapping from addresses to the amount of allocations mapping(address => uint256) internal reservations; bool internal _isClaimingActive; bool private isReserveActive; uint256 public maxTokensPerClaim; constructor( string memory _name, string memory _symbol, address _proxyRegistryAddress, uint256 _maxSupply ) ChubbiBase(_name, _symbol, _proxyRegistryAddress, _maxSupply) { _isClaimingActive = false; isReserveActive = true; maxTokensPerClaim = 50; } /** * @dev Get the reservations for a given address. * @param _for address of the owner of the tokens. */ function getReservations(address _for) external view returns (uint256) { return isReserveActive ? reservations[_for] : 0; } /** * @dev Check if claiming is active. */ function isClaimingActive() external view returns (bool) { return _isClaimingActive && isReserveActive; } function setMaxTokensPerClaim(uint256 _amount) external onlyOwner { maxTokensPerClaim = _amount; } /** * @dev Claim all reserved tokens. */ function claim() external whenNotPaused { require(_isClaimingActive, "Claiming is not active"); require(isReserveActive, "Reserve is not active"); require(reservations[msg.sender] > 0, "No tokens to claim"); uint256 numberOfTokens = reservations[msg.sender]; uint256 numberToClaim = Math.min(numberOfTokens, maxTokensPerClaim); reservations[msg.sender] = numberOfTokens.sub(numberToClaim); claimed = claimed.add(numberToClaim); for (uint256 i = 0; i < numberToClaim; i++) { _mintTo(msg.sender); } emit Claimed(msg.sender, numberToClaim); } // Pause and unpause function pauseClaiming() external onlyOwner { require(_isClaimingActive, "Claiming is already paused"); _isClaimingActive = false; } function unpauseClaiming() external onlyOwner { require(!_isClaimingActive, "Claiming is active"); _isClaimingActive = true; } /** * @dev Stop all reservations permanently */ function stopReservations() public onlyOwner whenNotPaused { _isClaimingActive = false; isReserveActive = false; } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "./opensea/ERC721Tradable.sol"; contract ChubbiBase is ERC721Tradable { uint256 public maxSupply; constructor( string memory _name, string memory _symbol, address _proxyRegistryAddress, uint256 _maxSupply ) ERC721Tradable(_name, _symbol, _proxyRegistryAddress) { require(_maxSupply > 0, "Max supply must be set"); maxSupply = _maxSupply; } // Override mint so that we cannot go over the maximum supply function _mint(address _to, uint256 _tokenId) internal override { // Ensure tokenId is in range [1, maxSupply] require(_tokenId > 0 && _tokenId <= maxSupply, "Invalid token id"); super._mint(_to, _tokenId); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "@openzeppelin/contracts/token/ERC721/ERC721.sol"; import "@openzeppelin/contracts/token/ERC721/extensions/ERC721Enumerable.sol"; import "@openzeppelin/contracts/access/Ownable.sol"; import "@openzeppelin/contracts/security/Pausable.sol"; import "@openzeppelin/contracts/utils/Counters.sol"; import "@openzeppelin/contracts/utils/math/SafeMath.sol"; import "@openzeppelin/contracts/utils/Strings.sol"; import "./common/meta-transactions/ContentMixin.sol"; import "./common/meta-transactions/NativeMetaTransaction.sol"; contract OwnableDelegateProxy {} contract ProxyRegistry { mapping(address => OwnableDelegateProxy) public proxies; } /** * @title ERC721Tradable * ERC721Tradable - ERC721 contract that whitelists a trading address, and has minting functionality. */ abstract contract ERC721Tradable is ERC721Enumerable, Ownable, Pausable, ContextMixin, NativeMetaTransaction { using SafeMath for uint256; using Counters for Counters.Counter; Counters.Counter private _tokenIdCounter; address internal proxyRegistryAddress; string public baseTokenURI; constructor( string memory _name, string memory _symbol, address _proxyRegistryAddress ) ERC721(_name, _symbol) { proxyRegistryAddress = _proxyRegistryAddress; _initializeEIP712(_name); } function setBaseTokenURI(string memory newBaseTokenURI) public onlyOwner { baseTokenURI = newBaseTokenURI; } function tokenURI(uint256 _tokenId) public view override returns (string memory) { return string(abi.encodePacked(baseTokenURI, Strings.toString(_tokenId))); } /** * @dev Get the amount of tokens that have been minted. * NOTE: This is different from totalSupply() as this won't decrease the supply count on token burn. */ function currentSupply() public view returns (uint256) { return _tokenIdCounter.current(); } /** * @dev Mints a token to an address with a tokenURI. * @param _to address of the future owner of the token */ function _mintTo(address _to) internal virtual { _tokenIdCounter.increment(); _safeMint(_to, _tokenIdCounter.current()); } /** * Money functions */ function withdraw() external onlyOwner { uint256 balance = address(this).balance; payable(msg.sender).transfer(balance); } /** * Pausable */ function pause() public onlyOwner { _pause(); } function unpause() public onlyOwner { _unpause(); } function _beforeTokenTransfer( address from, address to, uint256 tokenId ) internal override whenNotPaused { super._beforeTokenTransfer(from, to, tokenId); } /** * Override isApprovedForAll to whitelist user's OpenSea proxy accounts to enable gas-less listings. */ function isApprovedForAll(address owner, address operator) public view override returns (bool) { // Whitelist OpenSea proxy contract for easy trading. ProxyRegistry proxyRegistry = ProxyRegistry(proxyRegistryAddress); if (address(proxyRegistry.proxies(owner)) == operator) { return true; } return super.isApprovedForAll(owner, operator); } /** * This is used instead of msg.sender as transactions won't be sent by the original token owner, but by OpenSea. */ function _msgSender() internal view override returns (address sender) { return ContextMixin.msgSender(); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "./IERC721.sol"; import "./IERC721Receiver.sol"; import "./extensions/IERC721Metadata.sol"; import "../../utils/Address.sol"; import "../../utils/Context.sol"; import "../../utils/Strings.sol"; import "../../utils/introspection/ERC165.sol"; /** * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including * the Metadata extension, but not including the Enumerable extension, which is available separately as * {ERC721Enumerable}. */ contract ERC721 is Context, ERC165, IERC721, IERC721Metadata { using Address for address; using Strings for uint256; // Token name string private _name; // Token symbol string private _symbol; // Mapping from token ID to owner address mapping(uint256 => address) private _owners; // Mapping owner address to token count mapping(address => uint256) private _balances; // Mapping from token ID to approved address mapping(uint256 => address) private _tokenApprovals; // Mapping from owner to operator approvals mapping(address => mapping(address => bool)) private _operatorApprovals; /** * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection. */ constructor(string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; } /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) { return interfaceId == type(IERC721).interfaceId || interfaceId == type(IERC721Metadata).interfaceId || super.supportsInterface(interfaceId); } /** * @dev See {IERC721-balanceOf}. */ function balanceOf(address owner) public view virtual override returns (uint256) { require(owner != address(0), "ERC721: balance query for the zero address"); return _balances[owner]; } /** * @dev See {IERC721-ownerOf}. */ function ownerOf(uint256 tokenId) public view virtual override returns (address) { address owner = _owners[tokenId]; require(owner != address(0), "ERC721: owner query for nonexistent token"); return owner; } /** * @dev See {IERC721Metadata-name}. */ function name() public view virtual override returns (string memory) { return _name; } /** * @dev See {IERC721Metadata-symbol}. */ function symbol() public view virtual override returns (string memory) { return _symbol; } /** * @dev See {IERC721Metadata-tokenURI}. */ function tokenURI(uint256 tokenId) public view virtual override returns (string memory) { require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token"); string memory baseURI = _baseURI(); return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : ""; } /** * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each * token will be the concatenation of the `baseURI` and the `tokenId`. Empty * by default, can be overriden in child contracts. */ function _baseURI() internal view virtual returns (string memory) { return ""; } /** * @dev See {IERC721-approve}. */ function approve(address to, uint256 tokenId) public virtual override { address owner = ERC721.ownerOf(tokenId); require(to != owner, "ERC721: approval to current owner"); require( _msgSender() == owner || isApprovedForAll(owner, _msgSender()), "ERC721: approve caller is not owner nor approved for all" ); _approve(to, tokenId); } /** * @dev See {IERC721-getApproved}. */ function getApproved(uint256 tokenId) public view virtual override returns (address) { require(_exists(tokenId), "ERC721: approved query for nonexistent token"); return _tokenApprovals[tokenId]; } /** * @dev See {IERC721-setApprovalForAll}. */ function setApprovalForAll(address operator, bool approved) public virtual override { require(operator != _msgSender(), "ERC721: approve to caller"); _operatorApprovals[_msgSender()][operator] = approved; emit ApprovalForAll(_msgSender(), operator, approved); } /** * @dev See {IERC721-isApprovedForAll}. */ function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) { return _operatorApprovals[owner][operator]; } /** * @dev See {IERC721-transferFrom}. */ function transferFrom( address from, address to, uint256 tokenId ) public virtual override { //solhint-disable-next-line max-line-length require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved"); _transfer(from, to, tokenId); } /** * @dev See {IERC721-safeTransferFrom}. */ function safeTransferFrom( address from, address to, uint256 tokenId ) public virtual override { safeTransferFrom(from, to, tokenId, ""); } /** * @dev See {IERC721-safeTransferFrom}. */ function safeTransferFrom( address from, address to, uint256 tokenId, bytes memory _data ) public virtual override { require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved"); _safeTransfer(from, to, tokenId, _data); } /** * @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. * * `_data` is additional data, it has no specified format and it is sent in call to `to`. * * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g. * implement alternative mechanisms to perform token transfer, such as signature-based. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function _safeTransfer( address from, address to, uint256 tokenId, bytes memory _data ) internal virtual { _transfer(from, to, tokenId); require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer"); } /** * @dev Returns whether `tokenId` exists. * * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}. * * Tokens start existing when they are minted (`_mint`), * and stop existing when they are burned (`_burn`). */ function _exists(uint256 tokenId) internal view virtual returns (bool) { return _owners[tokenId] != address(0); } /** * @dev Returns whether `spender` is allowed to manage `tokenId`. * * Requirements: * * - `tokenId` must exist. */ function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) { require(_exists(tokenId), "ERC721: operator query for nonexistent token"); address owner = ERC721.ownerOf(tokenId); return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender)); } /** * @dev Safely mints `tokenId` and transfers it to `to`. * * Requirements: * * - `tokenId` must not exist. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function _safeMint(address to, uint256 tokenId) internal virtual { _safeMint(to, tokenId, ""); } /** * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is * forwarded in {IERC721Receiver-onERC721Received} to contract recipients. */ function _safeMint( address to, uint256 tokenId, bytes memory _data ) internal virtual { _mint(to, tokenId); require( _checkOnERC721Received(address(0), to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer" ); } /** * @dev Mints `tokenId` and transfers it to `to`. * * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible * * Requirements: * * - `tokenId` must not exist. * - `to` cannot be the zero address. * * Emits a {Transfer} event. */ function _mint(address to, uint256 tokenId) internal virtual { require(to != address(0), "ERC721: mint to the zero address"); require(!_exists(tokenId), "ERC721: token already minted"); _beforeTokenTransfer(address(0), to, tokenId); _balances[to] += 1; _owners[tokenId] = to; emit Transfer(address(0), to, tokenId); } /** * @dev Destroys `tokenId`. * The approval is cleared when the token is burned. * * Requirements: * * - `tokenId` must exist. * * Emits a {Transfer} event. */ function _burn(uint256 tokenId) internal virtual { address owner = ERC721.ownerOf(tokenId); _beforeTokenTransfer(owner, address(0), tokenId); // Clear approvals _approve(address(0), tokenId); _balances[owner] -= 1; delete _owners[tokenId]; emit Transfer(owner, address(0), tokenId); } /** * @dev Transfers `tokenId` from `from` to `to`. * As opposed to {transferFrom}, this imposes no restrictions on msg.sender. * * Requirements: * * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * * Emits a {Transfer} event. */ function _transfer( address from, address to, uint256 tokenId ) internal virtual { require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own"); require(to != address(0), "ERC721: transfer to the zero address"); _beforeTokenTransfer(from, to, tokenId); // Clear approvals from the previous owner _approve(address(0), tokenId); _balances[from] -= 1; _balances[to] += 1; _owners[tokenId] = to; emit Transfer(from, to, tokenId); } /** * @dev Approve `to` to operate on `tokenId` * * Emits a {Approval} event. */ function _approve(address to, uint256 tokenId) internal virtual { _tokenApprovals[tokenId] = to; emit Approval(ERC721.ownerOf(tokenId), to, tokenId); } /** * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address. * The call is not executed if the target address is not a contract. * * @param from address representing the previous owner of the given token ID * @param to target address that will receive the tokens * @param tokenId uint256 ID of the token to be transferred * @param _data bytes optional data to send along with the call * @return bool whether the call correctly returned the expected magic value */ function _checkOnERC721Received( address from, address to, uint256 tokenId, bytes memory _data ) private returns (bool) { if (to.isContract()) { try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) { return retval == IERC721Receiver.onERC721Received.selector; } catch (bytes memory reason) { if (reason.length == 0) { revert("ERC721: transfer to non ERC721Receiver implementer"); } else { assembly { revert(add(32, reason), mload(reason)) } } } } else { return true; } } /** * @dev Hook that is called before any token transfer. This includes minting * and burning. * * Calling conditions: * * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be * transferred to `to`. * - When `from` is zero, `tokenId` will be minted for `to`. * - When `to` is zero, ``from``'s `tokenId` 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 tokenId ) internal virtual {} }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "../ERC721.sol"; import "./IERC721Enumerable.sol"; /** * @dev This implements an optional extension of {ERC721} defined in the EIP that adds * enumerability of all the token ids in the contract as well as all token ids owned by each * account. */ abstract contract ERC721Enumerable is ERC721, IERC721Enumerable { // Mapping from owner to list of owned token IDs mapping(address => mapping(uint256 => uint256)) private _ownedTokens; // Mapping from token ID to index of the owner tokens list mapping(uint256 => uint256) private _ownedTokensIndex; // Array with all token ids, used for enumeration uint256[] private _allTokens; // Mapping from token id to position in the allTokens array mapping(uint256 => uint256) private _allTokensIndex; /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) { return interfaceId == type(IERC721Enumerable).interfaceId || super.supportsInterface(interfaceId); } /** * @dev See {IERC721Enumerable-tokenOfOwnerByIndex}. */ function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual override returns (uint256) { require(index < ERC721.balanceOf(owner), "ERC721Enumerable: owner index out of bounds"); return _ownedTokens[owner][index]; } /** * @dev See {IERC721Enumerable-totalSupply}. */ function totalSupply() public view virtual override returns (uint256) { return _allTokens.length; } /** * @dev See {IERC721Enumerable-tokenByIndex}. */ function tokenByIndex(uint256 index) public view virtual override returns (uint256) { require(index < ERC721Enumerable.totalSupply(), "ERC721Enumerable: global index out of bounds"); return _allTokens[index]; } /** * @dev Hook that is called before any token transfer. This includes minting * and burning. * * Calling conditions: * * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be * transferred to `to`. * - When `from` is zero, `tokenId` will be minted for `to`. * - When `to` is zero, ``from``'s `tokenId` will be burned. * - `from` cannot be the zero address. * - `to` cannot be the zero address. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer( address from, address to, uint256 tokenId ) internal virtual override { super._beforeTokenTransfer(from, to, tokenId); if (from == address(0)) { _addTokenToAllTokensEnumeration(tokenId); } else if (from != to) { _removeTokenFromOwnerEnumeration(from, tokenId); } if (to == address(0)) { _removeTokenFromAllTokensEnumeration(tokenId); } else if (to != from) { _addTokenToOwnerEnumeration(to, tokenId); } } /** * @dev Private function to add a token to this extension's ownership-tracking data structures. * @param to address representing the new owner of the given token ID * @param tokenId uint256 ID of the token to be added to the tokens list of the given address */ function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private { uint256 length = ERC721.balanceOf(to); _ownedTokens[to][length] = tokenId; _ownedTokensIndex[tokenId] = length; } /** * @dev Private function to add a token to this extension's token tracking data structures. * @param tokenId uint256 ID of the token to be added to the tokens list */ function _addTokenToAllTokensEnumeration(uint256 tokenId) private { _allTokensIndex[tokenId] = _allTokens.length; _allTokens.push(tokenId); } /** * @dev Private function to remove a token from this extension's ownership-tracking data structures. Note that * while the token is not assigned a new owner, the `_ownedTokensIndex` mapping is _not_ updated: this allows for * gas optimizations e.g. when performing a transfer operation (avoiding double writes). * This has O(1) time complexity, but alters the order of the _ownedTokens array. * @param from address representing the previous owner of the given token ID * @param tokenId uint256 ID of the token to be removed from the tokens list of the given address */ function _removeTokenFromOwnerEnumeration(address from, uint256 tokenId) private { // To prevent a gap in from's tokens array, we store the last token in the index of the token to delete, and // then delete the last slot (swap and pop). uint256 lastTokenIndex = ERC721.balanceOf(from) - 1; uint256 tokenIndex = _ownedTokensIndex[tokenId]; // When the token to delete is the last token, the swap operation is unnecessary if (tokenIndex != lastTokenIndex) { uint256 lastTokenId = _ownedTokens[from][lastTokenIndex]; _ownedTokens[from][tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token _ownedTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index } // This also deletes the contents at the last position of the array delete _ownedTokensIndex[tokenId]; delete _ownedTokens[from][lastTokenIndex]; } /** * @dev Private function to remove a token from this extension's token tracking data structures. * This has O(1) time complexity, but alters the order of the _allTokens array. * @param tokenId uint256 ID of the token to be removed from the tokens list */ function _removeTokenFromAllTokensEnumeration(uint256 tokenId) private { // To prevent a gap in the tokens array, we store the last token in the index of the token to delete, and // then delete the last slot (swap and pop). uint256 lastTokenIndex = _allTokens.length - 1; uint256 tokenIndex = _allTokensIndex[tokenId]; // When the token to delete is the last token, the swap operation is unnecessary. However, since this occurs so // rarely (when the last minted token is burnt) that we still do the swap here to avoid the gas cost of adding // an 'if' statement (like in _removeTokenFromOwnerEnumeration) uint256 lastTokenId = _allTokens[lastTokenIndex]; _allTokens[tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token _allTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index // This also deletes the contents at the last position of the array delete _allTokensIndex[tokenId]; _allTokens.pop(); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "../utils/Context.sol"; /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. */ abstract contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ constructor() { _setOwner(_msgSender()); } /** * @dev Returns the address of the current owner. */ function owner() public view virtual returns (address) { return _owner; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(owner() == _msgSender(), "Ownable: caller is not the owner"); _; } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { _setOwner(address(0)); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); _setOwner(newOwner); } function _setOwner(address newOwner) private { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } }
// SPDX-License-Identifier: MIT 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 ^0.8.0; /** * @title Counters * @author Matt Condon (@shrugs) * @dev Provides counters that can only be incremented, decremented or reset. This can be used e.g. to track the number * of elements in a mapping, issuing ERC721 ids, or counting request ids. * * Include with `using Counters for Counters.Counter;` */ library Counters { struct Counter { // This variable should never be directly accessed by users of the library: interactions must be restricted to // the library's function. As of Solidity v0.5.2, this cannot be enforced, though there is a proposal to add // this feature: see https://github.com/ethereum/solidity/issues/4637 uint256 _value; // default: 0 } function current(Counter storage counter) internal view returns (uint256) { return counter._value; } function increment(Counter storage counter) internal { unchecked { counter._value += 1; } } function decrement(Counter storage counter) internal { uint256 value = counter._value; require(value > 0, "Counter: decrement overflow"); unchecked { counter._value = value - 1; } } function reset(Counter storage counter) internal { counter._value = 0; } }
// SPDX-License-Identifier: MIT 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 pragma solidity ^0.8.0; abstract contract ContextMixin { function msgSender() internal view returns (address payable sender) { if (msg.sender == address(this)) { bytes memory array = msg.data; uint256 index = msg.data.length; assembly { // Load the 32 bytes word from memory with the address on the lower 20 bytes, and mask those. sender := and( mload(add(array, index)), 0xffffffffffffffffffffffffffffffffffffffff ) } } else { sender = payable(msg.sender); } return sender; } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "@openzeppelin/contracts/utils/math/SafeMath.sol"; import "./EIP712Base.sol"; contract NativeMetaTransaction is EIP712Base { using SafeMath for uint256; bytes32 private constant META_TRANSACTION_TYPEHASH = keccak256( bytes( "MetaTransaction(uint256 nonce,address from,bytes functionSignature)" ) ); event MetaTransactionExecuted( address userAddress, address payable relayerAddress, bytes functionSignature ); mapping(address => uint256) nonces; /* * Meta transaction structure. * No point of including value field here as if user is doing value transfer then he has the funds to pay for gas * He should call the desired function directly in that case. */ struct MetaTransaction { uint256 nonce; address from; bytes functionSignature; } function executeMetaTransaction( address userAddress, bytes memory functionSignature, bytes32 sigR, bytes32 sigS, uint8 sigV ) public payable returns (bytes memory) { MetaTransaction memory metaTx = MetaTransaction({ nonce: nonces[userAddress], from: userAddress, functionSignature: functionSignature }); require( verify(userAddress, metaTx, sigR, sigS, sigV), "Signer and signature do not match" ); // increase nonce for user (to avoid re-use) nonces[userAddress] = nonces[userAddress].add(1); emit MetaTransactionExecuted( userAddress, payable(msg.sender), functionSignature ); // Append userAddress and relayer address at the end to extract it from calling context (bool success, bytes memory returnData) = address(this).call( abi.encodePacked(functionSignature, userAddress) ); require(success, "Function call not successful"); return returnData; } function hashMetaTransaction(MetaTransaction memory metaTx) internal pure returns (bytes32) { return keccak256( abi.encode( META_TRANSACTION_TYPEHASH, metaTx.nonce, metaTx.from, keccak256(metaTx.functionSignature) ) ); } function getNonce(address user) public view returns (uint256 nonce) { nonce = nonces[user]; } function verify( address signer, MetaTransaction memory metaTx, bytes32 sigR, bytes32 sigS, uint8 sigV ) internal view returns (bool) { require(signer != address(0), "NativeMetaTransaction: INVALID_SIGNER"); return signer == ecrecover( toTypedMessageHash(hashMetaTransaction(metaTx)), sigV, sigR, sigS ); } }
// SPDX-License-Identifier: MIT 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 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 pragma solidity ^0.8.0; import "../IERC721.sol"; /** * @title ERC-721 Non-Fungible Token Standard, optional metadata extension * @dev See https://eips.ethereum.org/EIPS/eip-721 */ interface IERC721Metadata is IERC721 { /** * @dev Returns the token collection name. */ function name() external view returns (string memory); /** * @dev Returns the token collection symbol. */ function symbol() external view returns (string memory); /** * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token. */ function tokenURI(uint256 tokenId) external view returns (string memory); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; assembly { size := extcodesize(account) } return size > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value ) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason using the provided one. * * _Available since v4.3._ */ function verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) internal pure returns (bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } }
// SPDX-License-Identifier: MIT 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 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 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 pragma solidity ^0.8.0; import "../IERC721.sol"; /** * @title ERC-721 Non-Fungible Token Standard, optional enumeration extension * @dev See https://eips.ethereum.org/EIPS/eip-721 */ interface IERC721Enumerable is IERC721 { /** * @dev Returns the total amount of tokens stored by the contract. */ function totalSupply() external view returns (uint256); /** * @dev Returns a token ID owned by `owner` at a given `index` of its token list. * Use along with {balanceOf} to enumerate all of ``owner``'s tokens. */ function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256 tokenId); /** * @dev Returns a token ID at a given `index` of all the tokens stored by the contract. * Use along with {totalSupply} to enumerate all tokens. */ function tokenByIndex(uint256 index) external view returns (uint256); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "./Initializable.sol"; contract EIP712Base is Initializable { struct EIP712Domain { string name; string version; address verifyingContract; bytes32 salt; } string public constant ERC712_VERSION = "1"; bytes32 internal constant EIP712_DOMAIN_TYPEHASH = keccak256( bytes( "EIP712Domain(string name,string version,address verifyingContract,bytes32 salt)" ) ); bytes32 internal domainSeperator; // supposed to be called once while initializing. // one of the contracts that inherits this contract follows proxy pattern // so it is not possible to do this in a constructor function _initializeEIP712(string memory name) internal initializer { _setDomainSeperator(name); } function _setDomainSeperator(string memory name) internal { domainSeperator = keccak256( abi.encode( EIP712_DOMAIN_TYPEHASH, keccak256(bytes(name)), keccak256(bytes(ERC712_VERSION)), address(this), bytes32(getChainId()) ) ); } function getDomainSeperator() public view returns (bytes32) { return domainSeperator; } function getChainId() public view returns (uint256) { uint256 id; assembly { id := chainid() } return id; } /** * Accept message hash and returns hash message in EIP712 compatible form * So that it can be used to recover signer from signature signed using EIP712 formatted data * https://eips.ethereum.org/EIPS/eip-712 * "\\x19" makes the encoding deterministic * "\\x01" is the version byte to make it compatible to EIP-191 */ function toTypedMessageHash(bytes32 messageHash) internal view returns (bytes32) { return keccak256( abi.encodePacked("\x19\x01", getDomainSeperator(), messageHash) ); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; contract Initializable { bool inited = false; modifier initializer() { require(!inited, "already inited"); _; inited = true; } }
{ "optimizer": { "enabled": true, "runs": 8000 }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } }, "libraries": {} }
Contract Security Audit
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[{"inputs":[{"internalType":"string","name":"_name","type":"string"},{"internalType":"string","name":"_symbol","type":"string"},{"internalType":"address","name":"_proxyRegistryAddress","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"approved","type":"address"},{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"operator","type":"address"},{"indexed":false,"internalType":"bool","name":"approved","type":"bool"}],"name":"ApprovalForAll","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":false,"internalType":"uint256","name":"amountOfTokens","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"totalPrice","type":"uint256"}],"name":"BidSuccessful","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Claimed","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"userAddress","type":"address"},{"indexed":false,"internalType":"address payable","name":"relayerAddress","type":"address"},{"indexed":false,"internalType":"bytes","name":"functionSignature","type":"bytes"}],"name":"MetaTransactionExecuted","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"account","type":"address"}],"name":"Paused","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"Transfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"account","type":"address"}],"name":"Unpaused","type":"event"},{"inputs":[],"name":"ERC712_VERSION","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"approve","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"baseTokenURI","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_tokenAmount","type":"uint256"}],"name":"bid","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"claim","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"claimed","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"currentSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"userAddress","type":"address"},{"internalType":"bytes","name":"functionSignature","type":"bytes"},{"internalType":"bytes32","name":"sigR","type":"bytes32"},{"internalType":"bytes32","name":"sigS","type":"bytes32"},{"internalType":"uint8","name":"sigV","type":"uint8"}],"name":"executeMetaTransaction","outputs":[{"internalType":"bytes","name":"","type":"bytes"}],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"getApproved","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getChainId","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getCurrentPrice","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getDomainSeperator","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"user","type":"address"}],"name":"getNonce","outputs":[{"internalType":"uint256","name":"nonce","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_for","type":"address"}],"name":"getReservations","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"operator","type":"address"}],"name":"isApprovedForAll","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"isAuctionActive","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"isClaimingActive","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"maxAuctionSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"maxPrice","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"maxSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"maxTokensPerBid","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"maxTokensPerClaim","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"minPrice","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"ownerOf","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"pause","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"pauseAuction","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"pauseClaiming","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"paused","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"priceDelta","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"safeTransferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"bytes","name":"_data","type":"bytes"}],"name":"safeTransferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"operator","type":"address"},{"internalType":"bool","name":"approved","type":"bool"}],"name":"setApprovalForAll","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_maxPrice","type":"uint256"},{"internalType":"uint256","name":"_minPrice","type":"uint256"}],"name":"setAuctionParameters","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"string","name":"newBaseTokenURI","type":"string"}],"name":"setBaseTokenURI","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"setMaxTokensPerBid","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"setMaxTokensPerClaim","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"startAuction","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"startTime","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"stopReservations","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":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"timeDelta","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"index","type":"uint256"}],"name":"tokenByIndex","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"uint256","name":"index","type":"uint256"}],"name":"tokenOfOwnerByIndex","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_tokenId","type":"uint256"}],"name":"tokenURI","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"tokensAuctioned","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"transferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outp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Contract Creation Code
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
000000000000000000000000000000000000000000000000000000000000006000000000000000000000000000000000000000000000000000000000000000a0000000000000000000000000a5409ec958c83c3f309868babaca7c86dcb077c100000000000000000000000000000000000000000000000000000000000000114368756262697665727365204672656e7300000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000034348460000000000000000000000000000000000000000000000000000000000
-----Decoded View---------------
Arg [0] : _name (string): Chubbiverse Frens
Arg [1] : _symbol (string): CHF
Arg [2] : _proxyRegistryAddress (address): 0xa5409ec958C83C3f309868babACA7c86DCB077c1
-----Encoded View---------------
7 Constructor Arguments found :
Arg [0] : 0000000000000000000000000000000000000000000000000000000000000060
Arg [1] : 00000000000000000000000000000000000000000000000000000000000000a0
Arg [2] : 000000000000000000000000a5409ec958c83c3f309868babaca7c86dcb077c1
Arg [3] : 0000000000000000000000000000000000000000000000000000000000000011
Arg [4] : 4368756262697665727365204672656e73000000000000000000000000000000
Arg [5] : 0000000000000000000000000000000000000000000000000000000000000003
Arg [6] : 4348460000000000000000000000000000000000000000000000000000000000
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