ERC-721
Overview
Max Total Supply
2,032 JML
Holders
2,022
Market
Volume (24H)
N/A
Min Price (24H)
N/A
Max Price (24H)
N/A
Other Info
Token Contract
Balance
1 JMLLoading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
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Contract Name:
GhostCollection
Compiler Version
v0.8.4+commit.c7e474f2
Optimization Enabled:
Yes with 1337 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "./presets/ERC721EnviousDynamicPreset.sol"; contract GhostCollection is ERC721EnviousDynamicPreset { address private _superUser; address private _superMinter; constructor( string memory tokenName, string memory tokenSymbol, string memory baseTokenURI, uint256[] memory edgeValues, uint256[] memory edgeOffsets, uint256[] memory edgeRanges, address tokenMeasurment ) ERC721EnviousDynamicPreset( tokenName, tokenSymbol, baseTokenURI, edgeValues, edgeOffsets, edgeRanges, tokenMeasurment ) { _superUser = _msgSender(); _superMinter = _msgSender(); } modifier onlySuperUser { require(_msgSender() == _superUser, "only for super user"); _; } function mint(address to) public override { require(_msgSender() == _superMinter, "only for super minter"); super.mint(to); } function setGhostAddresses( address ghostToken, address ghostBonding ) public override onlySuperUser { super.setGhostAddresses(ghostToken, ghostBonding); } function changeBaseUri(string memory newBaseURI) external onlySuperUser { super._changeBaseURI(newBaseURI); } function renewSuperMinter(address who) external onlySuperUser { _superMinter = who; } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "../extension/ERC721Envious.sol"; import "../interfaces/IERC721EnviousDynamic.sol"; import "../openzeppelin/token/ERC721/extensions/ERC721Enumerable.sol"; import "../openzeppelin/token/ERC20/IERC20.sol"; import "../openzeppelin/token/ERC20/utils/SafeERC20.sol"; import "../openzeppelin/utils/Address.sol"; import "../openzeppelin/utils/Strings.sol"; import "../openzeppelin/utils/Counters.sol"; /** * @title ERC721 Collateralization Dynamic Mock * This mock shows an implementation of ERC721Envious with dynamic URI. * It will change on every collateral modification. Handmade `totalSupply` * function will be used in order to be used in {_disperse} function. * * @author 5Tr3TcH @ghostchain * @author 571nkY @ghostchain */ contract ERC721EnviousDynamicPreset is IERC721EnviousDynamic, ERC721Enumerable, ERC721Envious { using SafeERC20 for IERC20; using Address for address; using Strings for uint256; using Counters for Counters.Counter; string private _baseTokenURI; Counters.Counter private _tokenTracker; // token that will be used for dynamic measurment address public measurmentTokenAddress; // edges within which redistribution of URI will take place Edge[] public edges; // solhint-disable-next-line string private constant ZERO_ADDRESS = "zero address found"; constructor( string memory tokenName, string memory tokenSymbol, string memory baseTokenURI, uint256[] memory edgeValues, uint256[] memory edgeOffsets, uint256[] memory edgeRanges, address tokenMeasurment ) ERC721(tokenName, tokenSymbol) { require(tokenMeasurment != address(0), ZERO_ADDRESS); require( edgeValues.length == edgeOffsets.length && edgeValues.length == edgeRanges.length, ZERO_ADDRESS ); measurmentTokenAddress = tokenMeasurment; _changeBaseURI(baseTokenURI); for (uint256 i = 0; i < edgeValues.length; i++) { edges.push(Edge({ value: edgeValues[i], offset: edgeOffsets[i], range: edgeRanges[i] })); } } receive() external payable { _disperseTokenCollateral(msg.value, address(0)); } /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721Enumerable, ERC721Envious) returns (bool) { return interfaceId == type(IERC721EnviousDynamic).interfaceId || ERC721Enumerable.supportsInterface(interfaceId) || ERC721Envious.supportsInterface(interfaceId); } /** * @dev See {_baseURI}. */ function baseURI() external view virtual returns (string memory) { return _baseURI(); } /** * @dev Getter function for each token URI. * * Requirements: * - `tokenId` must exist. * * @param tokenId unique identifier of token * @return token URI string */ function tokenURI(uint256 tokenId) public view virtual override returns (string memory) { _requireMinted(tokenId); string memory currentURI = _baseURI(); uint256 tokenPointer = getTokenPointer(tokenId); return string(abi.encodePacked(currentURI, tokenPointer.toString(), ".json")); } /** * @dev Get `tokenURI` for specific token based on predefined `edges`. * * @param tokenId unique identifier for token */ function getTokenPointer(uint256 tokenId) public view virtual override returns (uint256) { uint256 collateral = collateralBalances[tokenId][measurmentTokenAddress]; uint256 totalDisperse = disperseBalance[measurmentTokenAddress] / totalSupply(); uint256 takenDisperse = disperseTaken[tokenId][measurmentTokenAddress]; uint256 value = collateral + totalDisperse - takenDisperse; uint256 range = 1; uint256 offset = 0; for (uint256 i = edges.length; i > 0; i--) { if (value >= edges[i-1].value) { range = edges[i-1].range; offset = edges[i-1].offset; break; } } uint256 seed = uint256(keccak256(abi.encodePacked(tokenId, collateral, totalDisperse))) % range; return seed + offset; } /** * @dev Set ghost related addresses. * * Requirements: * - `ghostAddress` must be non-zero address * - `ghostBonding` must be non-zero address * * @param ghostToken non-rebasing wrapping token address * @param ghostBonding bonding contract address */ function setGhostAddresses( address ghostToken, address ghostBonding ) public virtual { require( ghostToken != address(0) && ghostBonding != address(0), ZERO_ADDRESS ); _changeGhostAddresses(ghostToken, ghostBonding); } /** * @dev See {IERC721Envious-_changeCommunityAddresses}. */ function changeCommunityAddresses(address newTokenAddress, address newBlackHole) public virtual { require(newTokenAddress != address(0), ZERO_ADDRESS); _changeCommunityAddresses(newTokenAddress, newBlackHole); } /** * @dev See {ERC721EnviousDynamic-mint} */ function mint(address to) public virtual override { _tokenTracker.increment(); _safeMint(to, _tokenTracker.current()); } /** * @dev See {ERC721-_burn} */ function burn(uint256 tokenId) public virtual { _burn(tokenId); } /** * @dev See {ERC721Envious-_disperse} */ function _disperse(address tokenAddress, uint256 tokenId) internal virtual override { uint256 balance = disperseBalance[tokenAddress] / totalSupply(); if (disperseTotalTaken[tokenAddress] + balance > disperseBalance[tokenAddress]) { balance = disperseBalance[tokenAddress] - disperseTotalTaken[tokenAddress]; } if (balance > disperseTaken[tokenId][tokenAddress]) { uint256 amount = balance - disperseTaken[tokenId][tokenAddress]; disperseTaken[tokenId][tokenAddress] += amount; (bool shouldAppend,) = _arrayContains(tokenAddress, collateralTokens[tokenId]); if (shouldAppend) { collateralTokens[tokenId].push(tokenAddress); } collateralBalances[tokenId][tokenAddress] += amount; disperseTotalTaken[tokenAddress] += amount; } } /** * @dev Getter function for `_baseTokenURI`. * * @return base URI string */ function _baseURI() internal view virtual override returns (string memory) { return _baseTokenURI; } /** * @dev Ability to change URI for the collection. */ function _changeBaseURI(string memory newBaseURI) internal virtual { _baseTokenURI = newBaseURI; } /** * @dev See {ERC721-_beforeTokenTransfer}. */ function _beforeTokenTransfer( address from, address to, uint256 firstTokenId, uint256 batchSize ) internal virtual override(ERC721, ERC721Enumerable) { ERC721Enumerable._beforeTokenTransfer(from, to, firstTokenId, batchSize); } }
// 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 // OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC165 standard, as defined in the * https://eips.ethereum.org/EIPS/eip-165[EIP]. * * Implementers can declare support of contract interfaces, which can then be * queried by others ({ERC165Checker}). * * For an implementation, see {ERC165}. */ interface IERC165 { /** * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] * to learn more about how these ids are created. * * This function call must use less than 30 000 gas. */ function supportsInterface(bytes4 interfaceId) external view returns (bool); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol) pragma solidity ^0.8.0; import "./IERC165.sol"; /** * @dev Implementation of the {IERC165} interface. * * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check * for the additional interface id that will be supported. For example: * * ```solidity * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId); * } * ``` * * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation. */ abstract contract ERC165 is IERC165 { /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IERC165).interfaceId; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (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 v4.4.1 (utils/Counters.sol) 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 // OpenZeppelin Contracts v4.4.1 (utils/Context.sol) pragma solidity ^0.8.0; /** * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (utils/Address.sol) pragma solidity ^0.8.1; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== * * [IMPORTANT] * ==== * You shouldn't rely on `isContract` to protect against flash loan attacks! * * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract * constructor. * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize/address.code.length, which returns 0 // for contracts in construction, since the code is only stored at the end // of the constructor execution. return account.code.length > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://consensys.net/diligence/blog/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value ) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResultFromTarget(target, success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResultFromTarget(target, success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResultFromTarget(target, success, returndata, errorMessage); } /** * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract. * * _Available since v4.8._ */ function verifyCallResultFromTarget( address target, bool success, bytes memory returndata, string memory errorMessage ) internal view returns (bytes memory) { if (success) { if (returndata.length == 0) { // only check isContract if the call was successful and the return data is empty // otherwise we already know that it was a contract require(isContract(target), "Address: call to non-contract"); } return returndata; } else { _revert(returndata, errorMessage); } } /** * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason or using the provided one. * * _Available since v4.3._ */ function verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) internal pure returns (bytes memory) { if (success) { return returndata; } else { _revert(returndata, errorMessage); } } function _revert(bytes memory returndata, string memory errorMessage) private pure { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly /// @solidity memory-safe-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol) 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 // OpenZeppelin Contracts (last updated v4.5.0) (token/ERC721/extensions/IERC721Enumerable.sol) 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); /** * @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 // OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/ERC721Enumerable.sol) 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 See {ERC721-_beforeTokenTransfer}. */ function _beforeTokenTransfer( address from, address to, uint256 firstTokenId, uint256 batchSize ) internal virtual override { super._beforeTokenTransfer(from, to, firstTokenId, batchSize); if (batchSize > 1) { // Will only trigger during construction. Batch transferring (minting) is not available afterwards. revert("ERC721Enumerable: consecutive transfers not supported"); } uint256 tokenId = firstTokenId; 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 // OpenZeppelin Contracts (last updated v4.6.0) (token/ERC721/IERC721Receiver.sol) pragma solidity ^0.8.0; /** * @title ERC721 token receiver interface * @dev Interface for any contract that wants to support safeTransfers * from ERC721 asset contracts. */ interface IERC721Receiver { /** * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom} * by `operator` from `from`, this function is called. * * It must return its Solidity selector to confirm the token transfer. * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted. * * The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`. */ function onERC721Received( address operator, address from, uint256 tokenId, bytes calldata data ) external returns (bytes4); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/IERC721.sol) pragma solidity ^0.8.0; import "../../utils/introspection/IERC165.sol"; /** * @dev Required interface of an ERC721 compliant contract. */ interface IERC721 is IERC165 { /** * @dev Emitted when `tokenId` token is transferred from `from` to `to`. */ event Transfer(address indexed from, address indexed to, uint256 indexed tokenId); /** * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token. */ event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId); /** * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets. */ event ApprovalForAll(address indexed owner, address indexed operator, bool approved); /** * @dev Returns the number of tokens in ``owner``'s account. */ function balanceOf(address owner) external view returns (uint256 balance); /** * @dev Returns the owner of the `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function ownerOf(uint256 tokenId) external view returns (address owner); /** * @dev Safely transfers `tokenId` token from `from` to `to`. * * 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; /** * @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 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: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721 * or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must * understand this adds an external call which potentially creates a reentrancy vulnerability. * * 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 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 the account approved for `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function getApproved(uint256 tokenId) external view returns (address operator); /** * @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); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/ERC721.sol) 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: address zero is not a valid owner"); return _balances[owner]; } /** * @dev See {IERC721-ownerOf}. */ function ownerOf(uint256 tokenId) public view virtual override returns (address) { address owner = _ownerOf(tokenId); require(owner != address(0), "ERC721: invalid token ID"); 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) { _requireMinted(tokenId); 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 overridden 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 token owner or approved for all" ); _approve(to, tokenId); } /** * @dev See {IERC721-getApproved}. */ function getApproved(uint256 tokenId) public view virtual override returns (address) { _requireMinted(tokenId); return _tokenApprovals[tokenId]; } /** * @dev See {IERC721-setApprovalForAll}. */ function setApprovalForAll(address operator, bool approved) public virtual override { _setApprovalForAll(_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: caller is not token owner or 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: caller is not token owner or 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 the owner of the `tokenId`. Does NOT revert if token doesn't exist */ function _ownerOf(uint256 tokenId) internal view virtual returns (address) { return _owners[tokenId]; } /** * @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 _ownerOf(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) { address owner = ERC721.ownerOf(tokenId); return (spender == owner || isApprovedForAll(owner, spender) || getApproved(tokenId) == 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, 1); // Check that tokenId was not minted by `_beforeTokenTransfer` hook require(!_exists(tokenId), "ERC721: token already minted"); unchecked { // Will not overflow unless all 2**256 token ids are minted to the same owner. // Given that tokens are minted one by one, it is impossible in practice that // this ever happens. Might change if we allow batch minting. // The ERC fails to describe this case. _balances[to] += 1; } _owners[tokenId] = to; emit Transfer(address(0), to, tokenId); _afterTokenTransfer(address(0), to, tokenId, 1); } /** * @dev Destroys `tokenId`. * The approval is cleared when the token is burned. * This is an internal function that does not check if the sender is authorized to operate on the token. * * Requirements: * * - `tokenId` must exist. * * Emits a {Transfer} event. */ function _burn(uint256 tokenId) internal virtual { address owner = ERC721.ownerOf(tokenId); _beforeTokenTransfer(owner, address(0), tokenId, 1); // Update ownership in case tokenId was transferred by `_beforeTokenTransfer` hook owner = ERC721.ownerOf(tokenId); // Clear approvals delete _tokenApprovals[tokenId]; unchecked { // Cannot overflow, as that would require more tokens to be burned/transferred // out than the owner initially received through minting and transferring in. _balances[owner] -= 1; } delete _owners[tokenId]; emit Transfer(owner, address(0), tokenId); _afterTokenTransfer(owner, address(0), tokenId, 1); } /** * @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 from incorrect owner"); require(to != address(0), "ERC721: transfer to the zero address"); _beforeTokenTransfer(from, to, tokenId, 1); // Check that tokenId was not transferred by `_beforeTokenTransfer` hook require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer from incorrect owner"); // Clear approvals from the previous owner delete _tokenApprovals[tokenId]; unchecked { // `_balances[from]` cannot overflow for the same reason as described in `_burn`: // `from`'s balance is the number of token held, which is at least one before the current // transfer. // `_balances[to]` could overflow in the conditions described in `_mint`. That would require // all 2**256 token ids to be minted, which in practice is impossible. _balances[from] -= 1; _balances[to] += 1; } _owners[tokenId] = to; emit Transfer(from, to, tokenId); _afterTokenTransfer(from, to, tokenId, 1); } /** * @dev Approve `to` to operate on `tokenId` * * Emits an {Approval} event. */ function _approve(address to, uint256 tokenId) internal virtual { _tokenApprovals[tokenId] = to; emit Approval(ERC721.ownerOf(tokenId), to, tokenId); } /** * @dev Approve `operator` to operate on all of `owner` tokens * * Emits an {ApprovalForAll} event. */ function _setApprovalForAll( address owner, address operator, bool approved ) internal virtual { require(owner != operator, "ERC721: approve to caller"); _operatorApprovals[owner][operator] = approved; emit ApprovalForAll(owner, operator, approved); } /** * @dev Reverts if the `tokenId` has not been minted yet. */ function _requireMinted(uint256 tokenId) internal view virtual { require(_exists(tokenId), "ERC721: invalid token ID"); } /** * @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 { /// @solidity memory-safe-assembly assembly { revert(add(32, reason), mload(reason)) } } } } else { return true; } } /** * @dev Hook that is called before any token transfer. This includes minting and burning. If {ERC721Consecutive} is * used, the hook may be called as part of a consecutive (batch) mint, as indicated by `batchSize` greater than 1. * * Calling conditions: * * - When `from` and `to` are both non-zero, ``from``'s tokens will be transferred to `to`. * - When `from` is zero, the tokens will be minted for `to`. * - When `to` is zero, ``from``'s tokens will be burned. * - `from` and `to` are never both zero. * - `batchSize` is non-zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer( address from, address to, uint256, /* firstTokenId */ uint256 batchSize ) internal virtual { if (batchSize > 1) { if (from != address(0)) { _balances[from] -= batchSize; } if (to != address(0)) { _balances[to] += batchSize; } } } /** * @dev Hook that is called after any token transfer. This includes minting and burning. If {ERC721Consecutive} is * used, the hook may be called as part of a consecutive (batch) mint, as indicated by `batchSize` greater than 1. * * Calling conditions: * * - When `from` and `to` are both non-zero, ``from``'s tokens were transferred to `to`. * - When `from` is zero, the tokens were minted for `to`. * - When `to` is zero, ``from``'s tokens were burned. * - `from` and `to` are never both zero. * - `batchSize` is non-zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _afterTokenTransfer( address from, address to, uint256 firstTokenId, uint256 batchSize ) internal virtual {} }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (token/ERC20/utils/SafeERC20.sol) pragma solidity ^0.8.0; import "../IERC20.sol"; import "../extensions/draft-IERC20Permit.sol"; import "../../../utils/Address.sol"; /** * @title SafeERC20 * @dev Wrappers around ERC20 operations that throw on failure (when the token * contract returns false). Tokens that return no value (and instead revert or * throw on failure) are also supported, non-reverting calls are assumed to be * successful. * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract, * which allows you to call the safe operations as `token.safeTransfer(...)`, etc. */ library SafeERC20 { using Address for address; function safeTransfer( IERC20 token, address to, uint256 value ) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value)); } function safeTransferFrom( IERC20 token, address from, address to, uint256 value ) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value)); } /** * @dev Deprecated. This function has issues similar to the ones found in * {IERC20-approve}, and its usage is discouraged. * * Whenever possible, use {safeIncreaseAllowance} and * {safeDecreaseAllowance} instead. */ function safeApprove( IERC20 token, address spender, uint256 value ) internal { // safeApprove should only be called when setting an initial allowance, // or when resetting it to zero. To increase and decrease it, use // 'safeIncreaseAllowance' and 'safeDecreaseAllowance' require( (value == 0) || (token.allowance(address(this), spender) == 0), "SafeERC20: approve from non-zero to non-zero allowance" ); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value)); } function safeIncreaseAllowance( IERC20 token, address spender, uint256 value ) internal { uint256 newAllowance = token.allowance(address(this), spender) + value; _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } function safeDecreaseAllowance( IERC20 token, address spender, uint256 value ) internal { unchecked { uint256 oldAllowance = token.allowance(address(this), spender); require(oldAllowance >= value, "SafeERC20: decreased allowance below zero"); uint256 newAllowance = oldAllowance - value; _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } } function safePermit( IERC20Permit token, address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) internal { uint256 nonceBefore = token.nonces(owner); token.permit(owner, spender, value, deadline, v, r, s); uint256 nonceAfter = token.nonces(owner); require(nonceAfter == nonceBefore + 1, "SafeERC20: permit did not succeed"); } /** * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement * on the return value: the return value is optional (but if data is returned, it must not be false). * @param token The token targeted by the call. * @param data The call data (encoded using abi.encode or one of its variants). */ function _callOptionalReturn(IERC20 token, bytes memory data) private { // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since // we're implementing it ourselves. We use {Address-functionCall} to perform this call, which verifies that // the target address contains contract code and also asserts for success in the low-level call. bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed"); if (returndata.length > 0) { // Return data is optional require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed"); } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/draft-IERC20Permit.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612]. * * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't * need to send a transaction, and thus is not required to hold Ether at all. */ interface IERC20Permit { /** * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens, * given ``owner``'s signed approval. * * IMPORTANT: The same issues {IERC20-approve} has related to transaction * ordering also apply here. * * Emits an {Approval} event. * * Requirements: * * - `spender` cannot be the zero address. * - `deadline` must be a timestamp in the future. * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner` * over the EIP712-formatted function arguments. * - the signature must use ``owner``'s current nonce (see {nonces}). * * For more information on the signature format, see the * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP * section]. */ function permit( address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) external; /** * @dev Returns the current nonce for `owner`. This value must be * included whenever a signature is generated for {permit}. * * Every successful call to {permit} increases ``owner``'s nonce by one. This * prevents a signature from being used multiple times. */ function nonces(address owner) external view returns (uint256); /** * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}. */ // solhint-disable-next-line func-name-mixedcase function DOMAIN_SEPARATOR() external view returns (bytes32); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol) pragma solidity ^0.8.0; import "../IERC20.sol"; /** * @dev Interface for the optional metadata functions from the ERC20 standard. * * _Available since v4.1._ */ interface IERC20Metadata is IERC20 { /** * @dev Returns the name of the token. */ function name() external view returns (string memory); /** * @dev Returns the symbol of the token. */ function symbol() external view returns (string memory); /** * @dev Returns the decimals places of the token. */ function decimals() external view returns (uint8); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `to`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address to, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `from` to `to` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom( address from, address to, uint256 amount ) external returns (bool); }
// SPDX-License-Identifier: AGPL-3.0-only pragma solidity ^0.8.0; interface INoteKeeper { // Info for market note struct Note { uint256 payout; // gOHM remaining to be paid uint48 created; // time market was created uint48 matured; // timestamp when market is matured uint48 redeemed; // time market was redeemed uint48 marketID; // market ID of deposit. uint48 to avoid adding a slot. } function redeem(address _user, uint256[] memory _indexes, bool _sendgOHM) external returns (uint256); function redeemAll(address _user, bool _sendgOHM) external returns (uint256); function pushNote(address to, uint256 index) external; function pullNote(address from, uint256 index) external returns (uint256 newIndex_); function indexesFor(address _user) external view returns (uint256[] memory); function pendingFor(address _user, uint256 _index) external view returns (uint256 payout_, bool matured_); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "./IERC721Envious.sol"; /** * @title Additional extension for IERC721Envious, in order to make * `tokenURI` dynamic, based on actual collateral. * @author 571nkY @ghostchain * @dev Ability to get royalty payments from collateral NFTs. */ interface IERC721EnviousDynamic is IERC721Envious { struct Edge { uint256 value; uint256 offset; uint256 range; } /** * @dev Get `tokenURI` for specific token based on edges. Where actual * collateral should define which edge should be used, range shows * maximum value in current edge, offset shows minimal value in current * edge. * * @param tokenId unique identifier for token */ function getTokenPointer(uint256 tokenId) external view returns (uint256); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "../openzeppelin/token/ERC721/IERC721.sol"; /** * @title ERC-721 Non-Fungible Token Standard, optional Envious extension. * @author F4T50 @ghostchain * @author 571nkY @ghostchain * @author 5Tr3TcH @ghostchain * @dev Ability to collateralize each NFT in collection. */ interface IERC721Envious is IERC721 { event Collateralized(uint256 indexed tokenId, uint256 amount, address tokenAddress); event Uncollateralized(uint256 indexed tokenId, uint256 amount, address tokenAddress); event Dispersed(address indexed tokenAddress, uint256 amount); event Harvested(address indexed tokenAddress, uint256 amount, uint256 scaledAmount); /** * @dev An array with two elements. Each of them represents percentage from collateral * to be taken as a commission. First element represents collateralization commission. * Second element represents uncollateralization commission. There should be 3 * decimal buffer for each of them, e.g. 1000 = 1%. * * @param index of value in array. */ function commissions(uint256 index) external view returns (uint256); /** * @dev Address of token that will be paid on bonds. * * @return address address of token. */ function ghostAddress() external view returns (address); /** * @dev Address of smart contract, that provides purchasing of DeFi 2.0 bonds. * * @return address address of bonding smart. */ function ghostBondingAddress() external view returns (address); /** * @dev 'Black hole' is any address that guarantee tokens sent to it will not be * retrieved from there. Note: some tokens revert on transfer to zero address. * * @return address address of black hole. */ function blackHole() external view returns (address); /** * @dev Token that will be used to harvest collected commissions. * * @return address address of token. */ function communityToken() external view returns (address); /** * @dev Pool of available tokens for harvesting. * * @param index in array. * @return address of token. */ function communityPool(uint256 index) external view returns (address); /** * @dev Token balance available for harvesting. * * @param tokenAddress addres of token. * @return uint256 token balance. */ function communityBalance(address tokenAddress) external view returns (uint256); /** * @dev Array of tokens that were dispersed. * * @param index in array. * @return address address of dispersed token. */ function disperseTokens(uint256 index) external view returns (address); /** * @dev Amount of tokens that was dispersed. * * @param tokenAddress address of token. * @return uint256 token balance. */ function disperseBalance(address tokenAddress) external view returns (uint256); /** * @dev Amount of tokens that was already taken from the disperse. * * @param tokenAddress address of token. * @return uint256 total amount of tokens already taken. */ function disperseTotalTaken(address tokenAddress) external view returns (uint256); /** * @dev Amount of disperse already taken by each tokenId. * * @param tokenId unique identifier of unit. * @param tokenAddress address of token. * @return uint256 amount of tokens already taken. */ function disperseTaken(uint256 tokenId, address tokenAddress) external view returns (uint256); /** * @dev Available payouts. * * @param bondId bond unique identifier. * @return uint256 potential payout. */ function bondPayouts(uint256 bondId) external view returns (uint256); /** * @dev Mapping of `tokenId`s to array of bonds. * * @param tokenId unique identifier of unit. * @param index in array. * @return uint256 index of bond. */ function bondIndexes(uint256 tokenId, uint256 index) external view returns (uint256); /** * @dev Mapping of `tokenId`s to token addresses who have collateralized before. * * @param tokenId unique identifier of unit. * @param index in array. * @return address address of token. */ function collateralTokens(uint256 tokenId, uint256 index) external view returns (address); /** * @dev Token balances that are stored under `tokenId`. * * @param tokenId unique identifier of unit. * @param tokenAddress address of token. * @return uint256 token balance. */ function collateralBalances(uint256 tokenId, address tokenAddress) external view returns (uint256); /** * @dev Calculator function for harvesting. * * @param amount of `communityToken`s to spend * @param tokenAddress of token to be harvested * @return amount to harvest based on inputs */ function getAmount(uint256 amount, address tokenAddress) external view returns (uint256); /** * @dev Collect commission fees gathered in exchange for `communityToken`. * * @param amounts array of amounts to collateralize * @param tokenAddresses array of token addresses */ function harvest(uint256[] memory amounts, address[] memory tokenAddresses) external; /** * @dev Collateralize NFT with different tokens and amounts. * * @param tokenId unique identifier for specific NFT * @param amounts array of amounts to collateralize * @param tokenAddresses array of token addresses */ function collateralize( uint256 tokenId, uint256[] memory amounts, address[] memory tokenAddresses ) external payable; /** * @dev Withdraw underlying collateral. * * Requirements: * - only owner of NFT * * @param tokenId unique identifier for specific NFT * @param amounts array of amounts to collateralize * @param tokenAddresses array of token addresses */ function uncollateralize( uint256 tokenId, uint256[] memory amounts, address[] memory tokenAddresses ) external; /** * @dev Collateralize NFT with discount, based on available bonds. While * purchased bond will have delay the owner will be current smart contract * * @param bondId the ID of the market * @param tokenId unique identifier of NFT inside current smart contract * @param amount the amount of quote token to spend * @param maxPrice the maximum price at which to buy bond */ function getDiscountedCollateral( uint256 bondId, address quoteToken, uint256 tokenId, uint256 amount, uint256 maxPrice ) external; /** * @dev Claim collateral inside this smart contract and extending underlying * data mappings. * * @param tokenId unique identifier of NFT inside current smart contract * @param indexes array of note indexes to redeem */ function claimDiscountedCollateral(uint256 tokenId, uint256[] memory indexes) external; /** * @dev Split collateral among all existent tokens. * * @param amounts to be dispersed among all NFT owners * @param tokenAddresses of token to be dispersed */ function disperse(uint256[] memory amounts, address[] memory tokenAddresses) external payable; /** * @dev See {IERC721-_mint} */ function mint(address who) external; }
// SPDX-License-Identifier: AGPL-3.0 pragma solidity ^0.8.0; import "../openzeppelin/token/ERC20/IERC20.sol"; interface IBondDepository { event CreateMarket( uint256 indexed id, address indexed baseToken, address indexed quoteToken, uint256 initialPrice ); event CloseMarket(uint256 indexed id); event Bond( uint256 indexed id, uint256 amount, uint256 price ); event Tuned( uint256 indexed id, uint64 oldControlVariable, uint64 newControlVariable ); // Info about each type of market struct Market { uint256 capacity; // capacity remaining IERC20 quoteToken; // token to accept as payment bool capacityInQuote; // capacity limit is in payment token (true) or in STRL (false, default) uint64 totalDebt; // total debt from market uint64 maxPayout; // max tokens in/out (determined by capacityInQuote false/true) uint64 sold; // base tokens out uint256 purchased; // quote tokens in } // Info for creating new markets struct Terms { bool fixedTerm; // fixed term or fixed expiration uint64 controlVariable; // scaling variable for price uint48 vesting; // length of time from deposit to maturity if fixed-term uint48 conclusion; // timestamp when market no longer offered (doubles as time when market matures if fixed-expiry) uint64 maxDebt; // 9 decimal debt maximum in STRL } // Additional info about market. struct Metadata { uint48 lastTune; // last timestamp when control variable was tuned uint48 lastDecay; // last timestamp when market was created and debt was decayed uint48 length; // time from creation to conclusion. used as speed to decay debt. uint48 depositInterval; // target frequency of deposits uint48 tuneInterval; // frequency of tuning uint8 quoteDecimals; // decimals of quote token } // Control variable adjustment data struct Adjustment { uint64 change; // adjustment for price scaling variable uint48 lastAdjustment; // time of last adjustment uint48 timeToAdjusted; // time after which adjustment should happen bool active; // if adjustment is available } function deposit( uint256 _bid, // the ID of the market uint256 _amount, // the amount of quote token to spend uint256 _maxPrice, // the maximum price at which to buy address _user, // the recipient of the payout address _referral // the operator address ) external returns (uint256 payout_, uint256 expiry_, uint256 index_); function create ( IERC20 _quoteToken, // token used to deposit uint256[3] memory _market, // [capacity, initial price] bool[2] memory _booleans, // [capacity in quote, fixed term] uint256[2] memory _terms, // [vesting, conclusion] uint32[2] memory _intervals // [deposit interval, tune interval] ) external returns (uint256 id_); function close(uint256 _id) external; function isLive(uint256 _bid) external view returns (bool); function liveMarkets() external view returns (uint256[] memory); function liveMarketsFor(address _quoteToken) external view returns (uint256[] memory); function payoutFor(uint256 _amount, uint256 _bid) external view returns (uint256); function marketPrice(uint256 _bid) external view returns (uint256); function currentDebt(uint256 _bid) external view returns (uint256); function debtRatio(uint256 _bid) external view returns (uint256); function debtDecay(uint256 _bid) external view returns (uint64); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "../openzeppelin/token/ERC721/ERC721.sol"; import "../openzeppelin/token/ERC20/utils/SafeERC20.sol"; import "../openzeppelin/token/ERC20/IERC20.sol"; import "../openzeppelin/token/ERC20/extensions/IERC20Metadata.sol"; import "../openzeppelin/utils/Address.sol"; import "../interfaces/IERC721Envious.sol"; import "../interfaces/IBondDepository.sol"; import "../interfaces/INoteKeeper.sol"; /** * @title ERC721 Collateralization * * @author F4T50 @ghostchain * @author 571nkY @ghostchain * @author 5Tr3TcH @ghostchain * * @dev This implements an optional extension of {ERC721} defined in the GhostEnvy lightpaper that * adds collateralization functionality for all tokens behind this smart contract as well as any * unique tokenId can have it's own floor price and/or estimated future price. */ abstract contract ERC721Envious is ERC721, IERC721Envious { using SafeERC20 for IERC20; /// @dev See {IERC721Envious-commissions} uint256[2] public override commissions; /// @dev See {IERC721Envious-blackHole} address public override blackHole; /// @dev See {IERC721Envious-ghostAddress} address public override ghostAddress; /// @dev See {IERC721Envious-ghostBondingAddress} address public override ghostBondingAddress; /// @dev See {IERC721Envious-communityToken} address public override communityToken; /// @dev See {IERC721Envious-communityPool} address[] public override communityPool; /// @dev See {IERC721Envious-communityBalance} mapping(address => uint256) public override communityBalance; /// @dev See {IERC721Envious-disperseTokens} address[] public override disperseTokens; /// @dev See {IERC721Envious-disperseBalance} mapping(address => uint256) public override disperseBalance; /// @dev See {IERC721Envious-disperseTotalTaken} mapping(address => uint256) public override disperseTotalTaken; /// @dev See {IERC721Envious-disperseTaken} mapping(uint256 => mapping(address => uint256)) public override disperseTaken; /// @dev See {IERC721Envious-bondPayouts} mapping(uint256 => uint256) public override bondPayouts; /// @dev See {IERC721Envious-bondIndexes} mapping(uint256 => uint256[]) public override bondIndexes; /// @dev See {IERC721Envious-collateralTokens} mapping(uint256 => address[]) public override collateralTokens; /// @dev See {IERC721Envious-collateralBalances} mapping(uint256 => mapping(address => uint256)) public override collateralBalances; // solhint-disable-next-line string private constant LENGTHS_NOT_MATCH = "ERC721Envious: lengths not match"; // solhint-disable-next-line string private constant LOW_AMOUNT = "ERC721Envious: low amount"; // solhint-disable-next-line string private constant EMPTY_GHOST = "ERC721Envious: ghost is empty"; // solhint-disable-next-line string private constant NO_DECIMALS = "ERC721Envious: no decimals"; // solhint-disable-next-line string private constant NOT_TOKEN_OWNER = "ERC721Envious: only for owner"; // solhint-disable-next-line string private constant COMMISSION_TOO_HIGH = "ERC721Envious: commission is too high"; /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) { return interfaceId == type(IERC721Envious).interfaceId || ERC721.supportsInterface(interfaceId); } /** * @dev See {IERC721Envious-harvest}. */ function harvest( uint256[] memory amounts, address[] memory tokenAddresses ) external override virtual { require(amounts.length == tokenAddresses.length, LENGTHS_NOT_MATCH); for (uint256 i = 0; i < tokenAddresses.length; i++) { _harvest(amounts[i], tokenAddresses[i]); } } /** * @dev See {IERC721Envious-collateralize}. */ function collateralize( uint256 tokenId, uint256[] memory amounts, address[] memory tokenAddresses ) external payable override virtual { require(amounts.length == tokenAddresses.length, LENGTHS_NOT_MATCH); uint256 ethAmount = msg.value; for (uint256 i = 0; i < tokenAddresses.length; i++) { if (tokenAddresses[i] == address(0)) { ethAmount -= amounts[i]; } _addTokenCollateral(tokenId, amounts[i], tokenAddresses[i], false); } if (ethAmount > 0) { Address.sendValue(payable(_msgSender()), ethAmount); } } /** * @dev See {IERC721Envious-uncollateralize}. */ function uncollateralize( uint256 tokenId, uint256[] memory amounts, address[] memory tokenAddresses ) external override virtual { require(amounts.length == tokenAddresses.length, LENGTHS_NOT_MATCH); for (uint256 i = 0; i < tokenAddresses.length; i++) { _removeTokenCollateral(tokenId, amounts[i], tokenAddresses[i]); } } /** * @dev See {IERC721Envious-disperse}. */ function disperse( uint256[] memory amounts, address[] memory tokenAddresses ) external payable override virtual { require(amounts.length == tokenAddresses.length, LENGTHS_NOT_MATCH); uint256 ethAmount = msg.value; for (uint256 i = 0; i < tokenAddresses.length; i++) { if (tokenAddresses[i] == address(0)) { ethAmount -= amounts[i]; } _disperseTokenCollateral(amounts[i], tokenAddresses[i]); } if (ethAmount > 0) { Address.sendValue(payable(_msgSender()), ethAmount); } } /** * @dev See {IERC721Envious-getDiscountedCollateral}. */ function getDiscountedCollateral( uint256 bondId, address quoteToken, uint256 tokenId, uint256 amount, uint256 maxPrice ) external virtual override { // NOTE: this contract is temporary holder of `quoteToken` due to the need of // registration of bond inside. `amount` of `quoteToken`s should be empty in // the end of transaction. _requireMinted(tokenId); IERC20(quoteToken).safeTransferFrom(_msgSender(), address(this), amount); IERC20(quoteToken).safeApprove(ghostBondingAddress, amount); (uint256 payout,, uint256 index) = IBondDepository(ghostBondingAddress).deposit( bondId, amount, maxPrice, address(this), address(this) ); if (payout > 0) { bondPayouts[tokenId] += payout; bondIndexes[tokenId].push(index); } } /** * @dev See {IERC721Envious-claimDiscountedCollateral}. */ function claimDiscountedCollateral( uint256 tokenId, uint256[] memory indexes ) external virtual override { require(ghostAddress != address(0), EMPTY_GHOST); for (uint256 i = 0; i < indexes.length; i++) { uint256 index = _arrayContains(indexes[i], bondIndexes[tokenId]); bondIndexes[tokenId][index] = bondIndexes[tokenId][bondIndexes[tokenId].length - 1]; bondIndexes[tokenId].pop(); } uint256 payout = INoteKeeper(ghostBondingAddress).redeem(address(this), indexes, true); if (payout > 0) { bondPayouts[tokenId] -= payout; _addTokenCollateral(tokenId, payout, ghostAddress, true); } } /** * @dev See {IERC721Envious-getAmount} */ function getAmount( uint256 amount, address tokenAddress ) public view virtual override returns (uint256) { uint256 circulatingSupply = IERC20(communityToken).totalSupply() - IERC20(communityToken).balanceOf(blackHole); return amount * _scaledAmount(tokenAddress) / circulatingSupply; } /** * @dev Loop over the array in order to find specific token address index. * * @param tokenAddress address representing the ERC20 token or zero address for ETH * @param findFrom array of addresses in which search should happen * * @return shouldAppend whether address not found and should be added to array * @return index in array, default to uint256 max value if not found */ function _arrayContains( address tokenAddress, address[] memory findFrom ) internal pure virtual returns (bool shouldAppend, uint256 index) { shouldAppend = true; index = type(uint256).max; for (uint256 i = 0; i < findFrom.length; i++) { if (findFrom[i] == tokenAddress) { shouldAppend = false; index = i; break; } } } /** * @dev Loop over the array in order to find specific note index. * * @param noteId index of note stored previously * @param findFrom array of note indexes * * @return index in array, default to uint256 max value if not found */ function _arrayContains( uint256 noteId, uint256[] memory findFrom ) internal pure virtual returns (uint256 index) { index = type(uint256).max; for (uint256 i = 0; i < findFrom.length; i++) { if (findFrom[i] == noteId) { index = i; break; } } } /** * @dev Calculate amount to harvest with `communityToken` for the collected * commission. Calculation should happen based on all available ERC20 in * `communityPool`. * * @param tokenAddress address representing the ERC20 token or zero address for ETH * * @return maximum scaled proportion */ function _scaledAmount(address tokenAddress) internal view virtual returns (uint256) { uint256 totalValue = 0; uint256 scaled = 0; uint256 defaultDecimals = 10**IERC20Metadata(communityToken).decimals(); for (uint256 i = 0; i < communityPool.length; i++) { uint256 innerDecimals = communityPool[i] == address(0) ? 10**18 : 10**IERC20Metadata(communityPool[i]).decimals(); uint256 tempValue = communityBalance[communityPool[i]] * defaultDecimals / innerDecimals; totalValue += tempValue; if (communityPool[i] == tokenAddress) { scaled = tempValue; } } return communityBalance[tokenAddress] * totalValue / scaled; } /** * @dev Function for `communityToken` owners if they want to redeem collected * commission in exchange for `communityToken`, while tokens will be send to * zero address in order to lock them forever. * * @param amount represents amount of `communityToken` to be send * @param tokenAddress address representing the ERC20 token or zero address for ETH */ function _harvest(uint256 amount, address tokenAddress) internal virtual { uint256 scaledAmount = getAmount(amount, tokenAddress); communityBalance[tokenAddress] -= scaledAmount; if (communityBalance[tokenAddress] == 0) { (, uint256 index) = _arrayContains(tokenAddress, communityPool); communityPool[index] = communityPool[communityPool.length - 1]; communityPool.pop(); } if (tokenAddress == address(0)) { Address.sendValue(payable(_msgSender()), scaledAmount); } else { IERC20(tokenAddress).safeTransfer(_msgSender(), scaledAmount); } // NOTE: not every token implements `burn` function, so that is a littl cheat IERC20(communityToken).safeTransferFrom(_msgSender(), blackHole, amount); emit Harvested(tokenAddress, amount, scaledAmount); } /** * @dev Ability for any user to collateralize any existent ERC721 token with * any ERC20 token. * * Requirements: * - `tokenId` token must exist. * - `amount` should be greater than zero. * * @param tokenId unique identifier of NFT inside current smart contract * @param amount represents amount of ERC20 to be send * @param tokenAddress address representing the ERC20 token or zero address for ETH */ function _addTokenCollateral( uint256 tokenId, uint256 amount, address tokenAddress, bool claim ) internal virtual { require(amount > 0, LOW_AMOUNT); _requireMinted(tokenId); _disperse(tokenAddress, tokenId); (bool shouldAppend,) = _arrayContains(tokenAddress, collateralTokens[tokenId]); if (shouldAppend) { _checkValidity(tokenAddress); collateralTokens[tokenId].push(tokenAddress); } uint256 ownerBalance = _communityCommission(amount, commissions[0], tokenAddress); collateralBalances[tokenId][tokenAddress] += ownerBalance; if (tokenAddress != address(0) && !claim) { IERC20(tokenAddress).safeTransferFrom(_msgSender(), address(this), amount); } emit Collateralized(tokenId, amount, tokenAddress); } /** * @dev Ability for ERC721 owner to withdraw ERC20 collateral that was * previously pushed inside. * * Requirements: * - `tokenId` token must exist. * - `amount` must be less or equal than collateralized value. * * @param tokenId unique identifier of NFT inside current smart contract * @param amount represents amount of ERC20 collateral to withdraw * @param tokenAddress address representing the ERC20 token or zero address for ETH */ function _removeTokenCollateral( uint256 tokenId, uint256 amount, address tokenAddress ) internal virtual { require(_ownerOf(tokenId) == _msgSender(), NOT_TOKEN_OWNER); _disperse(tokenAddress, tokenId); collateralBalances[tokenId][tokenAddress] -= amount; if (collateralBalances[tokenId][tokenAddress] == 0) { (, uint256 index) = _arrayContains(tokenAddress, collateralTokens[tokenId]); collateralTokens[tokenId][index] = collateralTokens[tokenId][collateralTokens[tokenId].length - 1]; collateralTokens[tokenId].pop(); } uint256 ownerBalance = _communityCommission(amount, commissions[1], tokenAddress); if (tokenAddress == address(0)) { Address.sendValue(payable(_msgSender()), ownerBalance); } else { IERC20(tokenAddress).safeTransfer(_msgSender(), ownerBalance); } emit Uncollateralized(tokenId, ownerBalance, tokenAddress); } /** * @dev Disperse any input amount of tokens between all token owners in current * smart contract. Balance will be stored inside `disperseBalance` after which * any user can take it with help of {_disperse}. * * Requirements: * - `amount` must be greater than zero. * * @param amount represents amount of ERC20 tokens to disperse * @param tokenAddress address representing the ERC20 token or zero address for ETH */ function _disperseTokenCollateral(uint256 amount, address tokenAddress) internal virtual { require(amount > 0, LOW_AMOUNT); (bool shouldAppend,) = _arrayContains(tokenAddress, disperseTokens); if (shouldAppend) { _checkValidity(tokenAddress); disperseTokens.push(tokenAddress); } disperseBalance[tokenAddress] += amount; if (tokenAddress != address(0)) { IERC20(tokenAddress).safeTransferFrom(_msgSender(), address(this), amount); } emit Dispersed(tokenAddress, amount); } /** * @dev Need to check if the token address has this function, because it will be used in * scaledAmount later. Otherwise _scaledAmount will revert on every call. * * Requirements: * - all addresses except zero address, because it is used for ETH * - any check for decimals, the idea is to be reverted if function does not exist * * @param tokenAddress potential address of ERC20 token. */ function _checkValidity(address tokenAddress) internal virtual { if (tokenAddress != address(0)) { require(IERC20Metadata(tokenAddress).decimals() != type(uint8).max, NO_DECIMALS); } } /** * @dev Function that calculates output amount after community commission taken. * * @param amount represents amount of ERC20 tokens or ETH to disperse * @param percentage represents commission to be taken * @param tokenAddress address representing the ERC20 token or zero address for ETH * * @return amount after commission */ function _communityCommission( uint256 amount, uint256 percentage, address tokenAddress ) internal returns (uint256) { uint256 donation = amount * percentage / 1e5; (bool shouldAppend,) = _arrayContains(tokenAddress, communityPool); if (shouldAppend && donation > 0) { communityPool.push(tokenAddress); } communityBalance[tokenAddress] += donation; return amount - donation; } /** * @dev Ability to change commission. * * @param incoming is commission when user collateralize * @param outcoming is commission when user uncollateralize */ function _changeCommissions(uint256 incoming, uint256 outcoming) internal virtual { require(incoming < 1e5 && outcoming < 1e5, COMMISSION_TOO_HIGH); commissions[0] = incoming; commissions[1] = outcoming; } /** * @dev Ability to change commission token. * * @param newTokenAddress represents new token for commission * @param newBlackHole represents address for harvested tokens */ function _changeCommunityAddresses(address newTokenAddress, address newBlackHole) internal virtual { communityToken = newTokenAddress; blackHole = newBlackHole; } /** * @dev Ability to change commission token. * * @param newGhostTokenAddress represents GHST token address * @param newGhostBondingAddress represents ghostDAO bonding contract address */ function _changeGhostAddresses( address newGhostTokenAddress, address newGhostBondingAddress ) internal virtual { ghostAddress = newGhostTokenAddress; ghostBondingAddress = newGhostBondingAddress; } /** * @dev Function that will disperse tokens from `disperseBalance` to any NFT * owner. Should happen during uncollateralize process. * * @param tokenAddress address representing the ERC20 token or zero address for ETH * @param tokenId unique identifier of NFT in collection */ function _disperse(address tokenAddress, uint256 tokenId) internal virtual {} }
{ "remappings": [], "optimizer": { "enabled": true, "runs": 1337 }, "evmVersion": "berlin", "libraries": {}, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } } }
Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
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"uint256","name":"tokenId","type":"uint256"},{"internalType":"uint256[]","name":"amounts","type":"uint256[]"},{"internalType":"address[]","name":"tokenAddresses","type":"address[]"}],"name":"collateralize","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"commissions","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"communityBalance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"communityPool","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"communityToken","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256[]","name":"amounts","type":"uint256[]"},{"internalType":"address[]","name":"tokenAddresses","type":"address[]"}],"name":"disperse","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"disperseBalance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"address","name":"","type":"address"}],"name":"disperseTaken","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"disperseTokens","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"disperseTotalTaken","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"edges","outputs":[{"internalType":"uint256","name":"value","type":"uint256"},{"internalType":"uint256","name":"offset","type":"uint256"},{"internalType":"uint256","name":"range","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"address","name":"tokenAddress","type":"address"}],"name":"getAmount","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"getApproved","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"bondId","type":"uint256"},{"internalType":"address","name":"quoteToken","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"uint256","name":"maxPrice","type":"uint256"}],"name":"getDiscountedCollateral","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"getTokenPointer","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"ghostAddress","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"ghostBondingAddress","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256[]","name":"amounts","type":"uint256[]"},{"internalType":"address[]","name":"tokenAddresses","type":"address[]"}],"name":"harvest","outputs":[],"stateMutability":"nonpayable","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":"measurmentTokenAddress","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"}],"name":"mint","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"ownerOf","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"who","type":"address"}],"name":"renewSuperMinter","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":"address","name":"ghostToken","type":"address"},{"internalType":"address","name":"ghostBonding","type":"address"}],"name":"setGhostAddresses","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":[{"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":"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":"uint256","name":"tokenId","type":"uint256"},{"internalType":"uint256[]","name":"amounts","type":"uint256[]"},{"internalType":"address[]","name":"tokenAddresses","type":"address[]"}],"name":"uncollateralize","outputs":[],"stateMutability":"nonpayable","type":"function"},{"stateMutability":"payable","type":"receive"}]
Contract Creation Code
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
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-----Decoded View---------------
Arg [0] : tokenName (string): John McAfee Legacy
Arg [1] : tokenSymbol (string): JML
Arg [2] : baseTokenURI (string): ipfs://QmX5JcNwFvvXyeX6Rk59rZUs32Vb5auPtuoHuLkzTEYAiD/
Arg [3] : edgeValues (uint256[]): 0,76000000000000000000,228000000000000000000,571000000000000000000,1200000000000000000000,2200000000000000000000,3456000000000000000000,5012000000000000000000,6766000000000000000000,8796000000000000000000,11000000000000000000000,13743000000000000000000,17179000000000000000000,21474000000000000000000,26843000000000000000000,34000000000000000000000,41943000000000000000000,52428000000000000000000,65535000000000000000000,81920000000000000000000,100000000000000000000000,128000000000000000000000,160000000000000000000000,199999000000000000000000,250000000000000000000000
Arg [4] : edgeOffsets (uint256[]): 1,19566,31606,39131,43646,46657,53209,57241,59761,61273,62282,63999,65056,65716,66112,66378,68095,69152,69812,70208,70474,70779,70967,71084,71154
Arg [5] : edgeRanges (uint256[]): 19565,12040,7525,4515,3011,6552,4032,2520,1512,1009,1717,1057,660,396,266,1717,1057,660,396,266,305,188,117,70,49
Arg [6] : tokenMeasurment (address): 0x7EF911f8ef130F73D166468c0068753932357B17
-----Encoded View---------------
92 Constructor Arguments found :
Arg [0] : 00000000000000000000000000000000000000000000000000000000000000e0
Arg [1] : 0000000000000000000000000000000000000000000000000000000000000120
Arg [2] : 0000000000000000000000000000000000000000000000000000000000000160
Arg [3] : 00000000000000000000000000000000000000000000000000000000000001c0
Arg [4] : 0000000000000000000000000000000000000000000000000000000000000500
Arg [5] : 0000000000000000000000000000000000000000000000000000000000000840
Arg [6] : 0000000000000000000000007ef911f8ef130f73d166468c0068753932357b17
Arg [7] : 0000000000000000000000000000000000000000000000000000000000000012
Arg [8] : 4a6f686e204d6341666565204c65676163790000000000000000000000000000
Arg [9] : 0000000000000000000000000000000000000000000000000000000000000003
Arg [10] : 4a4d4c0000000000000000000000000000000000000000000000000000000000
Arg [11] : 0000000000000000000000000000000000000000000000000000000000000036
Arg [12] : 697066733a2f2f516d58354a634e774676765879655836526b3539725a557333
Arg [13] : 3256623561755074756f48754c6b7a5445594169442f00000000000000000000
Arg [14] : 0000000000000000000000000000000000000000000000000000000000000019
Arg [15] : 0000000000000000000000000000000000000000000000000000000000000000
Arg [16] : 0000000000000000000000000000000000000000000000041eb63d55b1b00000
Arg [17] : 00000000000000000000000000000000000000000000000c5c22b80115100000
Arg [18] : 00000000000000000000000000000000000000000000001ef43782b65c0c0000
Arg [19] : 0000000000000000000000000000000000000000000000410d586a20a4c00000
Arg [20] : 000000000000000000000000000000000000000000000077432217e683600000
Arg [21] : 0000000000000000000000000000000000000000000000bb59a27953c6000000
Arg [22] : 00000000000000000000000000000000000000000000010fb378f54931d00000
Arg [23] : 00000000000000000000000000000000000000000000016ec91cc03214f80000
Arg [24] : 0000000000000000000000000000000000000000000001dcd50584cb6ff00000
Arg [25] : 0000000000000000000000000000000000000000000002544faa778090e00000
Arg [26] : 0000000000000000000000000000000000000000000002e902701677215c0000
Arg [27] : 0000000000000000000000000000000000000000000003a3468449c1d38c0000
Arg [28] : 00000000000000000000000000000000000000000000048c1b9d89df32480000
Arg [29] : 0000000000000000000000000000000000000000000005af297547b0d28c0000
Arg [30] : 00000000000000000000000000000000000000000000073324c9144791400000
Arg [31] : 0000000000000000000000000000000000000000000008e1bc0dd47640fc0000
Arg [32] : 000000000000000000000000000000000000000000000b1a20a8c08d13b00000
Arg [33] : 000000000000000000000000000000000000000000000de0a8d2f0b0589c0000
Arg [34] : 000000000000000000000000000000000000000000001158e460913d00000000
Arg [35] : 00000000000000000000000000000000000000000000152d02c7e14af6800000
Arg [36] : 000000000000000000000000000000000000000000001b1ae4d6e2ef50000000
Arg [37] : 0000000000000000000000000000000000000000000021e19e0c9bab24000000
Arg [38] : 000000000000000000000000000000000000000000002a59f7af0be2459c0000
Arg [39] : 0000000000000000000000000000000000000000000034f086f3b33b68400000
Arg [40] : 0000000000000000000000000000000000000000000000000000000000000019
Arg [41] : 0000000000000000000000000000000000000000000000000000000000000001
Arg [42] : 0000000000000000000000000000000000000000000000000000000000004c6e
Arg [43] : 0000000000000000000000000000000000000000000000000000000000007b76
Arg [44] : 00000000000000000000000000000000000000000000000000000000000098db
Arg [45] : 000000000000000000000000000000000000000000000000000000000000aa7e
Arg [46] : 000000000000000000000000000000000000000000000000000000000000b641
Arg [47] : 000000000000000000000000000000000000000000000000000000000000cfd9
Arg [48] : 000000000000000000000000000000000000000000000000000000000000df99
Arg [49] : 000000000000000000000000000000000000000000000000000000000000e971
Arg [50] : 000000000000000000000000000000000000000000000000000000000000ef59
Arg [51] : 000000000000000000000000000000000000000000000000000000000000f34a
Arg [52] : 000000000000000000000000000000000000000000000000000000000000f9ff
Arg [53] : 000000000000000000000000000000000000000000000000000000000000fe20
Arg [54] : 00000000000000000000000000000000000000000000000000000000000100b4
Arg [55] : 0000000000000000000000000000000000000000000000000000000000010240
Arg [56] : 000000000000000000000000000000000000000000000000000000000001034a
Arg [57] : 00000000000000000000000000000000000000000000000000000000000109ff
Arg [58] : 0000000000000000000000000000000000000000000000000000000000010e20
Arg [59] : 00000000000000000000000000000000000000000000000000000000000110b4
Arg [60] : 0000000000000000000000000000000000000000000000000000000000011240
Arg [61] : 000000000000000000000000000000000000000000000000000000000001134a
Arg [62] : 000000000000000000000000000000000000000000000000000000000001147b
Arg [63] : 0000000000000000000000000000000000000000000000000000000000011537
Arg [64] : 00000000000000000000000000000000000000000000000000000000000115ac
Arg [65] : 00000000000000000000000000000000000000000000000000000000000115f2
Arg [66] : 0000000000000000000000000000000000000000000000000000000000000019
Arg [67] : 0000000000000000000000000000000000000000000000000000000000004c6d
Arg [68] : 0000000000000000000000000000000000000000000000000000000000002f08
Arg [69] : 0000000000000000000000000000000000000000000000000000000000001d65
Arg [70] : 00000000000000000000000000000000000000000000000000000000000011a3
Arg [71] : 0000000000000000000000000000000000000000000000000000000000000bc3
Arg [72] : 0000000000000000000000000000000000000000000000000000000000001998
Arg [73] : 0000000000000000000000000000000000000000000000000000000000000fc0
Arg [74] : 00000000000000000000000000000000000000000000000000000000000009d8
Arg [75] : 00000000000000000000000000000000000000000000000000000000000005e8
Arg [76] : 00000000000000000000000000000000000000000000000000000000000003f1
Arg [77] : 00000000000000000000000000000000000000000000000000000000000006b5
Arg [78] : 0000000000000000000000000000000000000000000000000000000000000421
Arg [79] : 0000000000000000000000000000000000000000000000000000000000000294
Arg [80] : 000000000000000000000000000000000000000000000000000000000000018c
Arg [81] : 000000000000000000000000000000000000000000000000000000000000010a
Arg [82] : 00000000000000000000000000000000000000000000000000000000000006b5
Arg [83] : 0000000000000000000000000000000000000000000000000000000000000421
Arg [84] : 0000000000000000000000000000000000000000000000000000000000000294
Arg [85] : 000000000000000000000000000000000000000000000000000000000000018c
Arg [86] : 000000000000000000000000000000000000000000000000000000000000010a
Arg [87] : 0000000000000000000000000000000000000000000000000000000000000131
Arg [88] : 00000000000000000000000000000000000000000000000000000000000000bc
Arg [89] : 0000000000000000000000000000000000000000000000000000000000000075
Arg [90] : 0000000000000000000000000000000000000000000000000000000000000046
Arg [91] : 0000000000000000000000000000000000000000000000000000000000000031
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A token is a representation of an on-chain or off-chain asset. The token page shows information such as price, total supply, holders, transfers and social links. Learn more about this page in our Knowledge Base.