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// SPDX-License-Identifier: GNU | |
// AE T H E R | |
// OpenZeppelin Contracts v4.4.1 (utils/math/SafeMath.sol) | |
pragma solidity 0.8.7; | |
// CAUTION | |
// This version of SafeMath should only be used with Solidity 0.8 or later, | |
// because it relies on the compiler's built in overflow checks. | |
/** | |
* @dev Wrappers over Solidity's arithmetic operations. | |
* | |
* NOTE: `SafeMath` is generally not needed starting with Solidity 0.8, since the compiler | |
* now has built in overflow checking. | |
*/ | |
library SafeMath { | |
/** | |
* @dev Returns the addition of two unsigned integers, with an overflow flag. | |
* | |
* _Available since v3.4._ | |
*/ | |
function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) { | |
unchecked { | |
uint256 c = a + b; | |
if (c < a) return (false, 0); | |
return (true, c); | |
} | |
} | |
/** | |
* @dev Returns the substraction of two unsigned integers, with an overflow flag. | |
* | |
* _Available since v3.4._ | |
*/ | |
function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) { | |
unchecked { | |
if (b > a) return (false, 0); | |
return (true, a - b); | |
} | |
} | |
/** | |
* @dev Returns the multiplication of two unsigned integers, with an overflow flag. | |
* | |
* _Available since v3.4._ | |
*/ | |
function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) { | |
unchecked { | |
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the | |
// benefit is lost if 'b' is also tested. | |
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 | |
if (a == 0) return (true, 0); | |
uint256 c = a * b; | |
if (c / a != b) return (false, 0); | |
return (true, c); | |
} | |
} | |
/** | |
* @dev Returns the division of two unsigned integers, with a division by zero flag. | |
* | |
* _Available since v3.4._ | |
*/ | |
function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) { | |
unchecked { | |
if (b == 0) return (false, 0); | |
return (true, a / b); | |
} | |
} | |
/** | |
* @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag. | |
* | |
* _Available since v3.4._ | |
*/ | |
function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) { | |
unchecked { | |
if (b == 0) return (false, 0); | |
return (true, a % b); | |
} | |
} | |
/** | |
* @dev Returns the addition of two unsigned integers, reverting on | |
* overflow. | |
* | |
* Counterpart to Solidity's `+` operator. | |
* | |
* Requirements: | |
* | |
* - Addition cannot overflow. | |
*/ | |
function add(uint256 a, uint256 b) internal pure returns (uint256) { | |
return a + b; | |
} | |
/** | |
* @dev Returns the subtraction of two unsigned integers, reverting on | |
* overflow (when the result is negative). | |
* | |
* Counterpart to Solidity's `-` operator. | |
* | |
* Requirements: | |
* | |
* - Subtraction cannot overflow. | |
*/ | |
function sub(uint256 a, uint256 b) internal pure returns (uint256) { | |
return a - b; | |
} | |
/** | |
* @dev Returns the multiplication of two unsigned integers, reverting on | |
* overflow. | |
* | |
* Counterpart to Solidity's `*` operator. | |
* | |
* Requirements: | |
* | |
* - Multiplication cannot overflow. | |
*/ | |
function mul(uint256 a, uint256 b) internal pure returns (uint256) { | |
return a * b; | |
} | |
/** | |
* @dev Returns the integer division of two unsigned integers, reverting on | |
* division by zero. The result is rounded towards zero. | |
* | |
* Counterpart to Solidity's `/` operator. | |
* | |
* Requirements: | |
* | |
* - The divisor cannot be zero. | |
*/ | |
function div(uint256 a, uint256 b) internal pure returns (uint256) { | |
return a / b; | |
} | |
/** | |
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), | |
* reverting when dividing by zero. | |
* | |
* Counterpart to Solidity's `%` operator. This function uses a `revert` | |
* opcode (which leaves remaining gas untouched) while Solidity uses an | |
* invalid opcode to revert (consuming all remaining gas). | |
* | |
* Requirements: | |
* | |
* - The divisor cannot be zero. | |
*/ | |
function mod(uint256 a, uint256 b) internal pure returns (uint256) { | |
return a % b; | |
} | |
/** | |
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on | |
* overflow (when the result is negative). | |
* | |
* CAUTION: This function is deprecated because it requires allocating memory for the error | |
* message unnecessarily. For custom revert reasons use {trySub}. | |
* | |
* Counterpart to Solidity's `-` operator. | |
* | |
* Requirements: | |
* | |
* - Subtraction cannot overflow. | |
*/ | |
function sub( | |
uint256 a, | |
uint256 b, | |
string memory errorMessage | |
) internal pure returns (uint256) { | |
unchecked { | |
require(b <= a, errorMessage); | |
return a - b; | |
} | |
} | |
/** | |
* @dev Returns the integer division of two unsigned integers, reverting with custom message on | |
* division by zero. The result is rounded towards zero. | |
* | |
* Counterpart to Solidity's `/` operator. Note: this function uses a | |
* `revert` opcode (which leaves remaining gas untouched) while Solidity | |
* uses an invalid opcode to revert (consuming all remaining gas). | |
* | |
* Requirements: | |
* | |
* - The divisor cannot be zero. | |
*/ | |
function div( | |
uint256 a, | |
uint256 b, | |
string memory errorMessage | |
) internal pure returns (uint256) { | |
unchecked { | |
require(b > 0, errorMessage); | |
return a / b; | |
} | |
} | |
/** | |
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), | |
* reverting with custom message when dividing by zero. | |
* | |
* CAUTION: This function is deprecated because it requires allocating memory for the error | |
* message unnecessarily. For custom revert reasons use {tryMod}. | |
* | |
* Counterpart to Solidity's `%` operator. This function uses a `revert` | |
* opcode (which leaves remaining gas untouched) while Solidity uses an | |
* invalid opcode to revert (consuming all remaining gas). | |
* | |
* Requirements: | |
* | |
* - The divisor cannot be zero. | |
*/ | |
function mod( | |
uint256 a, | |
uint256 b, | |
string memory errorMessage | |
) internal pure returns (uint256) { | |
unchecked { | |
require(b > 0, errorMessage); | |
return a % b; | |
} | |
} | |
} | |
// File: @openzeppelin/contracts/utils/Address.sol | |
// OpenZeppelin Contracts v4.4.1 (utils/Address.sol) | |
pragma solidity 0.8.7; | |
/** | |
* @dev Collection of functions related to the address type | |
*/ | |
library Address { | |
/** | |
* @dev Returns true if `account` is a contract. | |
* | |
* [IMPORTANT] | |
* ==== | |
* It is unsafe to assume that an address for which this function returns | |
* false is an externally-owned account (EOA) and not a contract. | |
* | |
* Among others, `isContract` will return false for the following | |
* types of addresses: | |
* | |
* - an externally-owned account | |
* - a contract in construction | |
* - an address where a contract will be created | |
* - an address where a contract lived, but was destroyed | |
* ==== | |
*/ | |
function isContract(address account) internal view returns (bool) { | |
// This method relies on extcodesize, which returns 0 for contracts in | |
// construction, since the code is only stored at the end of the | |
// constructor execution. | |
uint256 size; | |
assembly { | |
size := extcodesize(account) | |
} | |
return size > 0; | |
} | |
/** | |
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to | |
* `recipient`, forwarding all available gas and reverting on errors. | |
* | |
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost | |
* of certain opcodes, possibly making contracts go over the 2300 gas limit | |
* imposed by `transfer`, making them unable to receive funds via | |
* `transfer`. {sendValue} removes this limitation. | |
* | |
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. | |
* | |
* IMPORTANT: because control is transferred to `recipient`, care must be | |
* taken to not create reentrancy vulnerabilities. Consider using | |
* {ReentrancyGuard} or the | |
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. | |
*/ | |
function sendValue(address payable recipient, uint256 amount) internal { | |
require(address(this).balance >= amount, "Address: insufficient balance"); | |
(bool success, ) = recipient.call{value: amount}(""); | |
require(success, "Address: unable to send value, recipient may have reverted"); | |
} | |
/** | |
* @dev Performs a Solidity function call using a low level `call`. A | |
* plain `call` is an unsafe replacement for a function call: use this | |
* function instead. | |
* | |
* If `target` reverts with a revert reason, it is bubbled up by this | |
* function (like regular Solidity function calls). | |
* | |
* Returns the raw returned data. To convert to the expected return value, | |
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. | |
* | |
* Requirements: | |
* | |
* - `target` must be a contract. | |
* - calling `target` with `data` must not revert. | |
* | |
* _Available since v3.1._ | |
*/ | |
function functionCall(address target, bytes memory data) internal returns (bytes memory) { | |
return functionCall(target, data, "Address: low-level call failed"); | |
} | |
/** | |
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with | |
* `errorMessage` as a fallback revert reason when `target` reverts. | |
* | |
* _Available since v3.1._ | |
*/ | |
function functionCall( | |
address target, | |
bytes memory data, | |
string memory errorMessage | |
) internal returns (bytes memory) { | |
return functionCallWithValue(target, data, 0, errorMessage); | |
} | |
/** | |
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], | |
* but also transferring `value` wei to `target`. | |
* | |
* Requirements: | |
* | |
* - the calling contract must have an ETH balance of at least `value`. | |
* - the called Solidity function must be `payable`. | |
* | |
* _Available since v3.1._ | |
*/ | |
function functionCallWithValue( | |
address target, | |
bytes memory data, | |
uint256 value | |
) internal returns (bytes memory) { | |
return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); | |
} | |
/** | |
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but | |
* with `errorMessage` as a fallback revert reason when `target` reverts. | |
* | |
* _Available since v3.1._ | |
*/ | |
function functionCallWithValue( | |
address target, | |
bytes memory data, | |
uint256 value, | |
string memory errorMessage | |
) internal returns (bytes memory) { | |
require(address(this).balance >= value, "Address: insufficient balance for call"); | |
require(isContract(target), "Address: call to non-contract"); | |
(bool success, bytes memory returndata) = target.call{value: value}(data); | |
return verifyCallResult(success, returndata, errorMessage); | |
} | |
/** | |
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], | |
* but performing a static call. | |
* | |
* _Available since v3.3._ | |
*/ | |
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { | |
return functionStaticCall(target, data, "Address: low-level static call failed"); | |
} | |
/** | |
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], | |
* but performing a static call. | |
* | |
* _Available since v3.3._ | |
*/ | |
function functionStaticCall( | |
address target, | |
bytes memory data, | |
string memory errorMessage | |
) internal view returns (bytes memory) { | |
require(isContract(target), "Address: static call to non-contract"); | |
(bool success, bytes memory returndata) = target.staticcall(data); | |
return verifyCallResult(success, returndata, errorMessage); | |
} | |
/** | |
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], | |
* but performing a delegate call. | |
* | |
* _Available since v3.4._ | |
*/ | |
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { | |
return functionDelegateCall(target, data, "Address: low-level delegate call failed"); | |
} | |
/** | |
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], | |
* but performing a delegate call. | |
* | |
* _Available since v3.4._ | |
*/ | |
function functionDelegateCall( | |
address target, | |
bytes memory data, | |
string memory errorMessage | |
) internal returns (bytes memory) { | |
require(isContract(target), "Address: delegate call to non-contract"); | |
(bool success, bytes memory returndata) = target.delegatecall(data); | |
return verifyCallResult(success, returndata, errorMessage); | |
} | |
/** | |
* @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the | |
* revert reason using the provided one. | |
* | |
* _Available since v4.3._ | |
*/ | |
function verifyCallResult( | |
bool success, | |
bytes memory returndata, | |
string memory errorMessage | |
) internal pure returns (bytes memory) { | |
if (success) { | |
return returndata; | |
} else { | |
// Look for revert reason and bubble it up if present | |
if (returndata.length > 0) { | |
// The easiest way to bubble the revert reason is using memory via assembly | |
assembly { | |
let returndata_size := mload(returndata) | |
revert(add(32, returndata), returndata_size) | |
} | |
} else { | |
revert(errorMessage); | |
} | |
} | |
} | |
} | |
// File: @openzeppelin/contracts/utils/Context.sol | |
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol) | |
pragma solidity 0.8.7; | |
/** | |
* @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; | |
} | |
} | |
// File: contracts/Akylles/paymentsplitter.sol | |
pragma solidity 0.8.7; | |
/** | |
* @title PaymentSplitter | |
* @dev This contract allows to split Ether payments among a group of accounts. The sender does not need to be aware | |
* that the Ether will be split in this way, since it is handled transparently by the contract. | |
* | |
* The split can be in equal parts or in any other arbitrary proportion. The way this is specified is by assigning each | |
* account to a number of shares. Of all the Ether that this contract receives, each account will then be able to claim | |
* an amount proportional to the percentage of total shares they were assigned. | |
* | |
* `PaymentSplitter` follows a _pull payment_ model. This means that payments are not automatically forwarded to the | |
* accounts but kept in this contract, and the actual transfer is triggered as a separate step by calling the {release} | |
* function. | |
*/ | |
contract PaymentSplitter is Context { | |
using SafeMath for uint; | |
event PayeeAdded(address account, uint256 shares); | |
event PaymentReleased(address to, uint256 amount); | |
uint256 private _totalShares; | |
uint256 private _totalReleased; | |
mapping(address => uint256) private _shares; | |
mapping(address => uint256) private _released; | |
address[] private _payees; | |
/** | |
* @dev Creates an instance of `PaymentSplitter` where each account in `payees` is assigned the number of shares at | |
* the matching position in the `shares` array. | |
* | |
* All addresses in `payees` must be non-zero. Both arrays must have the same non-zero length, and there must be no | |
* duplicates in `payees`. | |
*/ | |
constructor(address[] memory payees, uint256[] memory shares_) payable { | |
require(payees.length == shares_.length, "PaymentSplitter: payees and shares length mismatch"); | |
require(payees.length > 0, "PaymentSplitter: no payees"); | |
for (uint256 i = 0; i < payees.length; i++) { | |
_addPayee(payees[i], shares_[i]); | |
} | |
} | |
/** | |
* @dev Getter for the amount of shares held by an account. | |
*/ | |
function shares(address account) public view returns (uint256) { | |
return _shares[account]; | |
} | |
/** | |
* @dev Triggers a transfer to `account` of the amount of Ether they are owed, according to their percentage of the | |
* total shares and their previous withdrawals. | |
*/ | |
function release(address payable account) public virtual { | |
require(_shares[account] > 0, "PaymentSplitter: account has no shares"); | |
uint256 totalReceived = address(this).balance + _totalReleased; | |
uint256 payment = (totalReceived * _shares[account]) / _totalShares - _released[account]; | |
require(payment != 0, "PaymentSplitter: account is not due payment"); | |
_released[account] = _released[account] + payment; | |
_totalReleased = _totalReleased + payment; | |
Address.sendValue(account, payment); | |
emit PaymentReleased(account, payment); | |
} | |
/** | |
* @dev Add a new payee to the contract. | |
* @param account The address of the payee to add. | |
* @param shares_ The number of shares owned by the payee. | |
*/ | |
function _addPayee(address account, uint256 shares_) internal virtual { | |
// a certain percentage of shares will be given to the first 1000 who mint nfts , that is why we will add shares to the first via the purchase function | |
require(account != address(0), "PaymentSplitter: account is the zero address"); | |
require(shares_ > 0, "PaymentSplitter: shares are 0"); | |
// if _shares of the account is already initialized either by the initial constructor OR minting a nft added add the number of shares based on the amount of nfts minted | |
if( _shares[account] > 0) { | |
_shares[account] = _shares[account] + shares_ ; | |
_totalShares = _totalShares + shares_; | |
emit PayeeAdded(account, shares_); | |
} | |
// if not a new payee will be added | |
else { | |
_payees.push(account); | |
_shares[account] = shares_; | |
_totalShares = _totalShares + shares_; | |
emit PayeeAdded(account, shares_); | |
} | |
} | |
} | |
// File: @openzeppelin/contracts/security/Pausable.sol | |
// OpenZeppelin Contracts v4.4.1 (security/Pausable.sol) | |
pragma solidity 0.8.7; | |
/** | |
* @dev Contract module which allows children to implement an emergency stop | |
* mechanism that can be triggered by an authorized account. | |
* | |
* This module is used through inheritance. It will make available the | |
* modifiers `whenNotPaused` and `whenPaused`, which can be applied to | |
* the functions of your contract. Note that they will not be pausable by | |
* simply including this module, only once the modifiers are put in place. | |
*/ | |
abstract contract Pausable is Context { | |
/** | |
* @dev Emitted when the pause is triggered by `account`. | |
*/ | |
event Paused(address account); | |
/** | |
* @dev Emitted when the pause is lifted by `account`. | |
*/ | |
event Unpaused(address account); | |
bool private _paused; | |
/** | |
* @dev Initializes the contract in unpaused state. | |
*/ | |
constructor() { | |
_paused = true; | |
} | |
/** | |
* @dev Returns true if the contract is paused, and false otherwise. | |
*/ | |
function paused() public view virtual returns (bool) { | |
return _paused; | |
} | |
/** | |
* @dev Modifier to make a function callable only when the contract is not paused. | |
* | |
* Requirements: | |
* | |
* - The contract must not be paused. | |
*/ | |
modifier whenNotPaused() { | |
require(!paused(), "Pausable: paused"); | |
_; | |
} | |
/** | |
* @dev Modifier to make a function callable only when the contract is paused. | |
* | |
* Requirements: | |
* | |
* - The contract must be paused. | |
*/ | |
modifier whenPaused() { | |
require(paused(), "Pausable: not paused"); | |
_; | |
} | |
/** | |
* @dev Triggers stopped state. | |
* | |
* Requirements: | |
* | |
* - The contract must not be paused. | |
*/ | |
function _pause() internal virtual whenNotPaused { | |
_paused = true; | |
emit Paused(_msgSender()); | |
} | |
/** | |
* @dev Returns to normal state. | |
* | |
* Requirements: | |
* | |
* - The contract must be paused. | |
*/ | |
function _unpause() internal virtual whenPaused { | |
_paused = false; | |
emit Unpaused(_msgSender()); | |
} | |
} | |
// File: @openzeppelin/contracts/access/Ownable.sol | |
// OpenZeppelin Contracts v4.4.1 (access/Ownable.sol) | |
pragma solidity 0.8.7; | |
/** | |
* @dev Contract module which provides a basic access control mechanism, where | |
* there is an account (an owner) that can be granted exclusive access to | |
* specific functions. | |
* | |
* By default, the owner account will be the one that deploys the contract. This | |
* can later be changed with {transferOwnership}. | |
* | |
* This module is used through inheritance. It will make available the modifier | |
* `onlyOwner`, which can be applied to your functions to restrict their use to | |
* the owner. | |
*/ | |
abstract contract Ownable is Context { | |
address private _owner; | |
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); | |
/** | |
* @dev Initializes the contract setting the deployer as the initial owner. | |
*/ | |
constructor() { | |
_transferOwnership(_msgSender()); | |
} | |
/** | |
* @dev Returns the address of the current owner. | |
*/ | |
function owner() public view virtual returns (address) { | |
return _owner; | |
} | |
/** | |
* @dev Throws if called by any account other than the owner. | |
*/ | |
modifier onlyOwner() { | |
require(owner() == _msgSender(), "Ownable: caller is not the owner"); | |
_; | |
} | |
/** | |
* @dev Leaves the contract without owner. It will not be possible to call | |
* `onlyOwner` functions anymore. Can only be called by the current owner. | |
* | |
* NOTE: Renouncing ownership will leave the contract without an owner, | |
* thereby removing any functionality that is only available to the owner. | |
*/ | |
function renounceOwnership() public virtual onlyOwner { | |
_transferOwnership(address(0)); | |
} | |
/** | |
* @dev Transfers ownership of the contract to a new account (`newOwner`). | |
* Can only be called by the current owner. | |
*/ | |
function transferOwnership(address newOwner) public virtual onlyOwner { | |
require(newOwner != address(0), "Ownable: new owner is the zero address"); | |
_transferOwnership(newOwner); | |
} | |
/** | |
* @dev Transfers ownership of the contract to a new account (`newOwner`). | |
* Internal function without access restriction. | |
*/ | |
function _transferOwnership(address newOwner) internal virtual { | |
address oldOwner = _owner; | |
_owner = newOwner; | |
emit OwnershipTransferred(oldOwner, newOwner); | |
} | |
} | |
// File: @openzeppelin/contracts/utils/Strings.sol | |
// OpenZeppelin Contracts v4.4.1 (utils/Strings.sol) | |
pragma solidity 0.8.7; | |
/** | |
* @dev String operations. | |
*/ | |
library Strings { | |
bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef"; | |
/** | |
* @dev Converts a `uint256` to its ASCII `string` decimal representation. | |
*/ | |
function toString(uint256 value) internal pure returns (string memory) { | |
// Inspired by OraclizeAPI's implementation - MIT licence | |
// https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol | |
if (value == 0) { | |
return "0"; | |
} | |
uint256 temp = value; | |
uint256 digits; | |
while (temp != 0) { | |
digits++; | |
temp /= 10; | |
} | |
bytes memory buffer = new bytes(digits); | |
while (value != 0) { | |
digits -= 1; | |
buffer[digits] = bytes1(uint8(48 + uint256(value % 10))); | |
value /= 10; | |
} | |
return string(buffer); | |
} | |
/** | |
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation. | |
*/ | |
function toHexString(uint256 value) internal pure returns (string memory) { | |
if (value == 0) { | |
return "0x00"; | |
} | |
uint256 temp = value; | |
uint256 length = 0; | |
while (temp != 0) { | |
length++; | |
temp >>= 8; | |
} | |
return toHexString(value, length); | |
} | |
/** | |
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length. | |
*/ | |
function toHexString(uint256 value, uint256 length) internal pure returns (string memory) { | |
bytes memory buffer = new bytes(2 * length + 2); | |
buffer[0] = "0"; | |
buffer[1] = "x"; | |
for (uint256 i = 2 * length + 1; i > 1; --i) { | |
buffer[i] = _HEX_SYMBOLS[value & 0xf]; | |
value >>= 4; | |
} | |
require(value == 0, "Strings: hex length insufficient"); | |
return string(buffer); | |
} | |
} | |
// File: @openzeppelin/contracts/utils/cryptography/MerkleProof.sol | |
// OpenZeppelin Contracts v4.4.1 (utils/cryptography/MerkleProof.sol) | |
pragma solidity 0.8.7; | |
/** | |
* @dev These functions deal with verification of Merkle Trees proofs. | |
* | |
* The proofs can be generated using the JavaScript library | |
* https://github.com/miguelmota/merkletreejs[merkletreejs]. | |
* Note: the hashing algorithm should be keccak256 and pair sorting should be enabled. | |
* | |
* See `test/utils/cryptography/MerkleProof.test.js` for some examples. | |
*/ | |
library MerkleProof { | |
/** | |
* @dev Returns true if a `leaf` can be proved to be a part of a Merkle tree | |
* defined by `root`. For this, a `proof` must be provided, containing | |
* sibling hashes on the branch from the leaf to the root of the tree. Each | |
* pair of leaves and each pair of pre-images are assumed to be sorted. | |
*/ | |
function verify( | |
bytes32[] memory proof, | |
bytes32 root, | |
bytes32 leaf | |
) internal pure returns (bool) { | |
return processProof(proof, leaf) == root; | |
} | |
/** | |
* @dev Returns the rebuilt hash obtained by traversing a Merklee tree up | |
* from `leaf` using `proof`. A `proof` is valid if and only if the rebuilt | |
* hash matches the root of the tree. When processing the proof, the pairs | |
* of leafs & pre-images are assumed to be sorted. | |
* | |
* _Available since v4.4._ | |
*/ | |
function processProof(bytes32[] memory proof, bytes32 leaf) internal pure returns (bytes32) { | |
bytes32 computedHash = leaf; | |
for (uint256 i = 0; i < proof.length; i++) { | |
bytes32 proofElement = proof[i]; | |
if (computedHash <= proofElement) { | |
// Hash(current computed hash + current element of the proof) | |
computedHash = keccak256(abi.encodePacked(computedHash, proofElement)); | |
} else { | |
// Hash(current element of the proof + current computed hash) | |
computedHash = keccak256(abi.encodePacked(proofElement, computedHash)); | |
} | |
} | |
return computedHash; | |
} | |
} | |
// File: @openzeppelin/contracts/utils/introspection/IERC165.sol | |
// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol) | |
pragma solidity 0.8.7; | |
/** | |
* @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); | |
} | |
// File: @openzeppelin/contracts/utils/introspection/ERC165.sol | |
// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol) | |
pragma solidity 0.8.7; | |
/** | |
* @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; | |
} | |
} | |
// File: @openzeppelin/contracts/token/ERC1155/IERC1155Receiver.sol | |
// OpenZeppelin Contracts v4.4.1 (token/ERC1155/IERC1155Receiver.sol) | |
pragma solidity 0.8.7; | |
/** | |
* @dev _Available since v3.1._ | |
*/ | |
interface IERC1155Receiver is IERC165 { | |
/** | |
@dev Handles the receipt of a single ERC1155 token type. This function is | |
called at the end of a `safeTransferFrom` after the balance has been updated. | |
To accept the transfer, this must return | |
`bytes4(keccak256("onERC1155Received(address,address,uint256,uint256,bytes)"))` | |
(i.e. 0xf23a6e61, or its own function selector). | |
@param operator The address which initiated the transfer (i.e. msg.sender) | |
@param from The address which previously owned the token | |
@param id The ID of the token being transferred | |
@param value The amount of tokens being transferred | |
@param data Additional data with no specified format | |
@return `bytes4(keccak256("onERC1155Received(address,address,uint256,uint256,bytes)"))` if transfer is allowed | |
*/ | |
function onERC1155Received( | |
address operator, | |
address from, | |
uint256 id, | |
uint256 value, | |
bytes calldata data | |
) external returns (bytes4); | |
/** | |
@dev Handles the receipt of a multiple ERC1155 token types. This function | |
is called at the end of a `safeBatchTransferFrom` after the balances have | |
been updated. To accept the transfer(s), this must return | |
`bytes4(keccak256("onERC1155BatchReceived(address,address,uint256[],uint256[],bytes)"))` | |
(i.e. 0xbc197c81, or its own function selector). | |
@param operator The address which initiated the batch transfer (i.e. msg.sender) | |
@param from The address which previously owned the token | |
@param ids An array containing ids of each token being transferred (order and length must match values array) | |
@param values An array containing amounts of each token being transferred (order and length must match ids array) | |
@param data Additional data with no specified format | |
@return `bytes4(keccak256("onERC1155BatchReceived(address,address,uint256[],uint256[],bytes)"))` if transfer is allowed | |
*/ | |
function onERC1155BatchReceived( | |
address operator, | |
address from, | |
uint256[] calldata ids, | |
uint256[] calldata values, | |
bytes calldata data | |
) external returns (bytes4); | |
} | |
// File: @openzeppelin/contracts/token/ERC1155/IERC1155.sol | |
// OpenZeppelin Contracts v4.4.1 (token/ERC1155/IERC1155.sol) | |
pragma solidity 0.8.7; | |
/** | |
* @dev Required interface of an ERC1155 compliant contract, as defined in the | |
* https://eips.ethereum.org/EIPS/eip-1155[EIP]. | |
* | |
* _Available since v3.1._ | |
*/ | |
interface IERC1155 is IERC165 { | |
/** | |
* @dev Emitted when `value` tokens of token type `id` are transferred from `from` to `to` by `operator`. | |
*/ | |
event TransferSingle(address indexed operator, address indexed from, address indexed to, uint256 id, uint256 value); | |
/** | |
* @dev Equivalent to multiple {TransferSingle} events, where `operator`, `from` and `to` are the same for all | |
* transfers. | |
*/ | |
event TransferBatch( | |
address indexed operator, | |
address indexed from, | |
address indexed to, | |
uint256[] ids, | |
uint256[] values | |
); | |
/** | |
* @dev Emitted when `account` grants or revokes permission to `operator` to transfer their tokens, according to | |
* `approved`. | |
*/ | |
event ApprovalForAll(address indexed account, address indexed operator, bool approved); | |
/** | |
* @dev Emitted when the URI for token type `id` changes to `value`, if it is a non-programmatic URI. | |
* | |
* If an {URI} event was emitted for `id`, the standard | |
* https://eips.ethereum.org/EIPS/eip-1155#metadata-extensions[guarantees] that `value` will equal the value | |
* returned by {IERC1155MetadataURI-uri}. | |
*/ | |
event URI(string value, uint256 indexed id); | |
/** | |
* @dev Returns the amount of tokens of token type `id` owned by `account`. | |
* | |
* Requirements: | |
* | |
* - `account` cannot be the zero address. | |
*/ | |
function balanceOf(address account, uint256 id) external view returns (uint256); | |
/** | |
* @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {balanceOf}. | |
* | |
* Requirements: | |
* | |
* - `accounts` and `ids` must have the same length. | |
*/ | |
function balanceOfBatch(address[] calldata accounts, uint256[] calldata ids) | |
external | |
view | |
returns (uint256[] memory); | |
/** | |
* @dev Grants or revokes permission to `operator` to transfer the caller's tokens, according to `approved`, | |
* | |
* Emits an {ApprovalForAll} event. | |
* | |
* Requirements: | |
* | |
* - `operator` cannot be the caller. | |
*/ | |
function setApprovalForAll(address operator, bool approved) external; | |
/** | |
* @dev Returns true if `operator` is approved to transfer ``account``'s tokens. | |
* | |
* See {setApprovalForAll}. | |
*/ | |
function isApprovedForAll(address account, address operator) external view returns (bool); | |
/** | |
* @dev Transfers `amount` tokens of token type `id` from `from` to `to`. | |
* | |
* Emits a {TransferSingle} event. | |
* | |
* Requirements: | |
* | |
* - `to` cannot be the zero address. | |
* - If the caller is not `from`, it must be have been approved to spend ``from``'s tokens via {setApprovalForAll}. | |
* - `from` must have a balance of tokens of type `id` of at least `amount`. | |
* - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155Received} and return the | |
* acceptance magic value. | |
*/ | |
function safeTransferFrom( | |
address from, | |
address to, | |
uint256 id, | |
uint256 amount, | |
bytes calldata data | |
) external; | |
/** | |
* @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {safeTransferFrom}. | |
* | |
* Emits a {TransferBatch} event. | |
* | |
* Requirements: | |
* | |
* - `ids` and `amounts` must have the same length. | |
* - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155BatchReceived} and return the | |
* acceptance magic value. | |
*/ | |
function safeBatchTransferFrom( | |
address from, | |
address to, | |
uint256[] calldata ids, | |
uint256[] calldata amounts, | |
bytes calldata data | |
) external; | |
} | |
// File: @openzeppelin/contracts/token/ERC1155/extensions/IERC1155MetadataURI.sol | |
// OpenZeppelin Contracts v4.4.1 (token/ERC1155/extensions/IERC1155MetadataURI.sol) | |
pragma solidity 0.8.7; | |
/** | |
* @dev Interface of the optional ERC1155MetadataExtension interface, as defined | |
* in the https://eips.ethereum.org/EIPS/eip-1155#metadata-extensions[EIP]. | |
* | |
* _Available since v3.1._ | |
*/ | |
interface IERC1155MetadataURI is IERC1155 { | |
/** | |
* @dev Returns the URI for token type `id`. | |
* | |
* If the `\{id\}` substring is present in the URI, it must be replaced by | |
* clients with the actual token type ID. | |
*/ | |
function uri(uint256 id) external view returns (string memory); | |
} | |
// File: @openzeppelin/contracts/token/ERC1155/ERC1155.sol | |
// OpenZeppelin Contracts v4.4.1 (token/ERC1155/ERC1155.sol) | |
pragma solidity 0.8.7; | |
/** | |
* @dev Implementation of the basic standard multi-token. | |
* See https://eips.ethereum.org/EIPS/eip-1155 | |
* Originally based on code by Enjin: https://github.com/enjin/erc-1155 | |
* | |
* _Available since v3.1._ | |
*/ | |
contract ERC1155 is Context, ERC165, IERC1155, IERC1155MetadataURI { | |
using Address for address; | |
// Mapping from token ID to account balances | |
mapping(uint256 => mapping(address => uint256)) private _balances; | |
// Mapping from account to operator approvals | |
mapping(address => mapping(address => bool)) private _operatorApprovals; | |
// Used as the URI for all token types by relying on ID substitution, e.g. https://token-cdn-domain/{id}.json | |
string private _uri; | |
/** | |
* @dev See {_setURI}. | |
*/ | |
constructor(string memory uri_) { | |
_setURI(uri_); | |
} | |
/** | |
* @dev See {IERC165-supportsInterface}. | |
*/ | |
function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) { | |
return | |
interfaceId == type(IERC1155).interfaceId || | |
interfaceId == type(IERC1155MetadataURI).interfaceId || | |
super.supportsInterface(interfaceId); | |
} | |
/** | |
* @dev See {IERC1155MetadataURI-uri}. | |
* | |
* This implementation returns the same URI for *all* token types. It relies | |
* on the token type ID substitution mechanism | |
* https://eips.ethereum.org/EIPS/eip-1155#metadata[defined in the EIP]. | |
* | |
* Clients calling this function must replace the `\{id\}` substring with the | |
* actual token type ID. | |
*/ | |
function uri(uint256) public view virtual override returns (string memory) { | |
return _uri; | |
} | |
/** | |
* @dev See {IERC1155-balanceOf}. | |
* | |
* Requirements: | |
* | |
* - `account` cannot be the zero address. | |
*/ | |
function balanceOf(address account, uint256 id) public view virtual override returns (uint256) { | |
require(account != address(0), "ERC1155: balance query for the zero address"); | |
return _balances[id][account]; | |
} | |
/** | |
* @dev See {IERC1155-balanceOfBatch}. | |
* | |
* Requirements: | |
* | |
* - `accounts` and `ids` must have the same length. | |
*/ | |
function balanceOfBatch(address[] memory accounts, uint256[] memory ids) | |
public | |
view | |
virtual | |
override | |
returns (uint256[] memory) | |
{ | |
require(accounts.length == ids.length, "ERC1155: accounts and ids length mismatch"); | |
uint256[] memory batchBalances = new uint256[](accounts.length); | |
for (uint256 i = 0; i < accounts.length; ++i) { | |
batchBalances[i] = balanceOf(accounts[i], ids[i]); | |
} | |
return batchBalances; | |
} | |
/** | |
* @dev See {IERC1155-setApprovalForAll}. | |
*/ | |
function setApprovalForAll(address operator, bool approved) public virtual override { | |
_setApprovalForAll(_msgSender(), operator, approved); | |
} | |
/** | |
* @dev See {IERC1155-isApprovedForAll}. | |
*/ | |
function isApprovedForAll(address account, address operator) public view virtual override returns (bool) { | |
return _operatorApprovals[account][operator]; | |
} | |
/** | |
* @dev See {IERC1155-safeTransferFrom}. | |
*/ | |
function safeTransferFrom( | |
address from, | |
address to, | |
uint256 id, | |
uint256 amount, | |
bytes memory data | |
) public virtual override { | |
require( | |
from == _msgSender() || isApprovedForAll(from, _msgSender()), | |
"ERC1155: caller is not owner nor approved" | |
); | |
_safeTransferFrom(from, to, id, amount, data); | |
} | |
/** | |
* @dev See {IERC1155-safeBatchTransferFrom}. | |
*/ | |
function safeBatchTransferFrom( | |
address from, | |
address to, | |
uint256[] memory ids, | |
uint256[] memory amounts, | |
bytes memory data | |
) public virtual override { | |
require( | |
from == _msgSender() || isApprovedForAll(from, _msgSender()), | |
"ERC1155: transfer caller is not owner nor approved" | |
); | |
_safeBatchTransferFrom(from, to, ids, amounts, data); | |
} | |
/** | |
* @dev Transfers `amount` tokens of token type `id` from `from` to `to`. | |
* | |
* Emits a {TransferSingle} event. | |
* | |
* Requirements: | |
* | |
* - `to` cannot be the zero address. | |
* - `from` must have a balance of tokens of type `id` of at least `amount`. | |
* - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155Received} and return the | |
* acceptance magic value. | |
*/ | |
function _safeTransferFrom( | |
address from, | |
address to, | |
uint256 id, | |
uint256 amount, | |
bytes memory data | |
) internal virtual { | |
require(to != address(0), "ERC1155: transfer to the zero address"); | |
address operator = _msgSender(); | |
_beforeTokenTransfer(operator, from, to, _asSingletonArray(id), _asSingletonArray(amount), data); | |
uint256 fromBalance = _balances[id][from]; | |
require(fromBalance >= amount, "ERC1155: insufficient balance for transfer"); | |
unchecked { | |
_balances[id][from] = fromBalance - amount; | |
} | |
_balances[id][to] += amount; | |
emit TransferSingle(operator, from, to, id, amount); | |
_doSafeTransferAcceptanceCheck(operator, from, to, id, amount, data); | |
} | |
/** | |
* @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {_safeTransferFrom}. | |
* | |
* Emits a {TransferBatch} event. | |
* | |
* Requirements: | |
* | |
* - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155BatchReceived} and return the | |
* acceptance magic value. | |
*/ | |
function _safeBatchTransferFrom( | |
address from, | |
address to, | |
uint256[] memory ids, | |
uint256[] memory amounts, | |
bytes memory data | |
) internal virtual { | |
require(ids.length == amounts.length, "ERC1155: ids and amounts length mismatch"); | |
require(to != address(0), "ERC1155: transfer to the zero address"); | |
address operator = _msgSender(); | |
_beforeTokenTransfer(operator, from, to, ids, amounts, data); | |
for (uint256 i = 0; i < ids.length; ++i) { | |
uint256 id = ids[i]; | |
uint256 amount = amounts[i]; | |
uint256 fromBalance = _balances[id][from]; | |
require(fromBalance >= amount, "ERC1155: insufficient balance for transfer"); | |
unchecked { | |
_balances[id][from] = fromBalance - amount; | |
} | |
_balances[id][to] += amount; | |
} | |
emit TransferBatch(operator, from, to, ids, amounts); | |
_doSafeBatchTransferAcceptanceCheck(operator, from, to, ids, amounts, data); | |
} | |
/** | |
* @dev Sets a new URI for all token types, by relying on the token type ID | |
* substitution mechanism | |
* https://eips.ethereum.org/EIPS/eip-1155#metadata[defined in the EIP]. | |
* | |
* By this mechanism, any occurrence of the `\{id\}` substring in either the | |
* URI or any of the amounts in the JSON file at said URI will be replaced by | |
* clients with the token type ID. | |
* | |
* For example, the `https://token-cdn-domain/\{id\}.json` URI would be | |
* interpreted by clients as | |
* `https://token-cdn-domain/000000000000000000000000000000000000000000000000000000000004cce0.json` | |
* for token type ID 0x4cce0. | |
* | |
* See {uri}. | |
* | |
* Because these URIs cannot be meaningfully represented by the {URI} event, | |
* this function emits no events. | |
*/ | |
function _setURI(string memory newuri) internal virtual { | |
_uri = newuri; | |
} | |
/** | |
* @dev Creates `amount` tokens of token type `id`, and assigns them to `to`. | |
* | |
* Emits a {TransferSingle} event. | |
* | |
* Requirements: | |
* | |
* - `to` cannot be the zero address. | |
* - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155Received} and return the | |
* acceptance magic value. | |
*/ | |
function _mint( | |
address to, | |
uint256 id, | |
uint256 amount, | |
bytes memory data | |
) internal virtual { | |
require(to != address(0), "ERC1155: mint to the zero address"); | |
address operator = _msgSender(); | |
_beforeTokenTransfer(operator, address(0), to, _asSingletonArray(id), _asSingletonArray(amount), data); | |
_balances[id][to] += amount; | |
emit TransferSingle(operator, address(0), to, id, amount); | |
_doSafeTransferAcceptanceCheck(operator, address(0), to, id, amount, data); | |
} | |
/** | |
* @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {_mint}. | |
* | |
* Requirements: | |
* | |
* - `ids` and `amounts` must have the same length. | |
* - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155BatchReceived} and return the | |
* acceptance magic value. | |
*/ | |
// changed here each value to one for unique nfts. | |
function _mintBatch( | |
address to, | |
uint256[] memory ids, | |
uint256[] memory amounts, | |
bytes memory data | |
) internal virtual { | |
require(to != address(0), "ERC1155: mint to the zero address"); | |
require(ids.length == amounts.length, "ERC1155: ids and amounts length mismatch"); | |
address operator = _msgSender(); | |
_beforeTokenTransfer(operator, address(0), to, ids, amounts, data); | |
for (uint256 i = 0; i < ids.length; i++) { | |
_balances[ids[i]][to] += amounts[i]; | |
} | |
emit TransferBatch(operator, address(0), to, ids, amounts); | |
_doSafeBatchTransferAcceptanceCheck(operator, address(0), to, ids, amounts, data); | |
} | |
/** | |
* @dev Destroys `amount` tokens of token type `id` from `from` | |
* | |
* Requirements: | |
* | |
* - `from` cannot be the zero address. | |
* - `from` must have at least `amount` tokens of token type `id`. | |
*/ | |
function _burn( | |
address from, | |
uint256 id, | |
uint256 amount | |
) internal virtual { | |
require(from != address(0), "ERC1155: burn from the zero address"); | |
address operator = _msgSender(); | |
_beforeTokenTransfer(operator, from, address(0), _asSingletonArray(id), _asSingletonArray(amount), ""); | |
uint256 fromBalance = _balances[id][from]; | |
require(fromBalance >= amount, "ERC1155: burn amount exceeds balance"); | |
unchecked { | |
_balances[id][from] = fromBalance - amount; | |
} | |
emit TransferSingle(operator, from, address(0), id, amount); | |
} | |
/** | |
* @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {_burn}. | |
* | |
* Requirements: | |
* | |
* - `ids` and `amounts` must have the same length. | |
*/ | |
function _burnBatch( | |
address from, | |
uint256[] memory ids, | |
uint256[] memory amounts | |
) internal virtual { | |
require(from != address(0), "ERC1155: burn from the zero address"); | |
require(ids.length == amounts.length, "ERC1155: ids and amounts length mismatch"); | |
address operator = _msgSender(); | |
_beforeTokenTransfer(operator, from, address(0), ids, amounts, ""); | |
for (uint256 i = 0; i < ids.length; i++) { | |
uint256 id = ids[i]; | |
uint256 amount = amounts[i]; | |
uint256 fromBalance = _balances[id][from]; | |
require(fromBalance >= amount, "ERC1155: burn amount exceeds balance"); | |
unchecked { | |
_balances[id][from] = fromBalance - amount; | |
} | |
} | |
emit TransferBatch(operator, from, address(0), ids, amounts); | |
} | |
/** | |
* @dev Approve `operator` to operate on all of `owner` tokens | |
* | |
* Emits a {ApprovalForAll} event. | |
*/ | |
function _setApprovalForAll( | |
address owner, | |
address operator, | |
bool approved | |
) internal virtual { | |
require(owner != operator, "ERC1155: setting approval status for self"); | |
_operatorApprovals[owner][operator] = approved; | |
emit ApprovalForAll(owner, operator, approved); | |
} | |
/** | |
* @dev Hook that is called before any token transfer. This includes minting | |
* and burning, as well as batched variants. | |
* | |
* The same hook is called on both single and batched variants. For single | |
* transfers, the length of the `id` and `amount` arrays will be 1. | |
* | |
* Calling conditions (for each `id` and `amount` pair): | |
* | |
* - When `from` and `to` are both non-zero, `amount` of ``from``'s tokens | |
* of token type `id` will be transferred to `to`. | |
* - When `from` is zero, `amount` tokens of token type `id` will be minted | |
* for `to`. | |
* - when `to` is zero, `amount` of ``from``'s tokens of token type `id` | |
* will be burned. | |
* - `from` and `to` are never both zero. | |
* - `ids` and `amounts` have the same, non-zero length. | |
* | |
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. | |
*/ | |
function _beforeTokenTransfer( | |
address operator, | |
address from, | |
address to, | |
uint256[] memory ids, | |
uint256[] memory amounts, | |
bytes memory data | |
) internal virtual {} | |
function _doSafeTransferAcceptanceCheck( | |
address operator, | |
address from, | |
address to, | |
uint256 id, | |
uint256 amount, | |
bytes memory data | |
) private { | |
if (to.isContract()) { | |
try IERC1155Receiver(to).onERC1155Received(operator, from, id, amount, data) returns (bytes4 response) { | |
if (response != IERC1155Receiver.onERC1155Received.selector) { | |
revert("ERC1155: ERC1155Receiver rejected tokens"); | |
} | |
} catch Error(string memory reason) { | |
revert(reason); | |
} catch { | |
revert("ERC1155: transfer to non ERC1155Receiver implementer"); | |
} | |
} | |
} | |
function _doSafeBatchTransferAcceptanceCheck( | |
address operator, | |
address from, | |
address to, | |
uint256[] memory ids, | |
uint256[] memory amounts, | |
bytes memory data | |
) private { | |
if (to.isContract()) { | |
try IERC1155Receiver(to).onERC1155BatchReceived(operator, from, ids, amounts, data) returns ( | |
bytes4 response | |
) { | |
if (response != IERC1155Receiver.onERC1155BatchReceived.selector) { | |
revert("ERC1155: ERC1155Receiver rejected tokens"); | |
} | |
} catch Error(string memory reason) { | |
revert(reason); | |
} catch { | |
revert("ERC1155: transfer to non ERC1155Receiver implementer"); | |
} | |
} | |
} | |
function _asSingletonArray(uint256 element) private pure returns (uint256[] memory) { | |
uint256[] memory array = new uint256[](1); | |
array[0] = element; | |
return array; | |
} | |
} | |
// File: @openzeppelin/contracts/token/ERC1155/extensions/ERC1155Supply.sol | |
// OpenZeppelin Contracts v4.4.1 (token/ERC1155/extensions/ERC1155Supply.sol) | |
pragma solidity 0.8.7; | |
// File: @openzeppelin/contracts/token/ERC1155/extensions/ERC1155Burnable.sol | |
// OpenZeppelin Contracts v4.4.1 (token/ERC1155/extensions/ERC1155Burnable.sol) | |
pragma solidity 0.8.7; | |
/** | |
* @dev Extension of {ERC1155} that allows token holders to destroy both their | |
* own tokens and those that they have been approved to use. | |
* | |
* _Available since v3.1._ | |
*/ | |
abstract contract ERC1155Burnable is ERC1155 { | |
function burn( | |
address account, | |
uint256 id, | |
uint256 value | |
) public virtual { | |
require( | |
account == _msgSender() || isApprovedForAll(account, _msgSender()), | |
"ERC1155: caller is not owner nor approved" | |
); | |
_burn(account, id, value); | |
} | |
function burnBatch( | |
address account, | |
uint256[] memory ids, | |
uint256[] memory values | |
) public virtual { | |
require( | |
account == _msgSender() || isApprovedForAll(account, _msgSender()), | |
"ERC1155: caller is not owner nor approved" | |
); | |
_burnBatch(account, ids, values); | |
} | |
} | |
// File: contracts/Akylles/AbstractERC1155Factory.sol | |
pragma solidity 0.8.7; | |
abstract contract AbstractERC1155Factory is Pausable, ERC1155Burnable, Ownable { | |
string name_; | |
string symbol_; | |
string _obscurumuri; | |
bool public frozen = false; | |
string extension; | |
function pause() external onlyOwner { | |
_pause(); | |
} | |
function unpause() external onlyOwner { | |
_unpause(); | |
} | |
function setURI(string memory baseURI) external onlyOwner { | |
require(frozen == false); | |
_setURI(baseURI); | |
} | |
function name() public view returns (string memory) { | |
return name_; | |
} | |
function symbol() public view returns (string memory) { | |
return symbol_; | |
} | |
} | |
// File: @openzeppelin/contracts/token/ERC721/IERC721.sol | |
// OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721.sol) | |
pragma solidity 0.8.7; | |
/** | |
* @dev Required interface of an ERC721 compliant contract. | |
*/ | |
interface IERC721 is IERC165 { | |
/** | |
* @dev Emitted when `tokenId` token is transferred from `from` to `to`. | |
*/ | |
event Transfer(address indexed from, address indexed to, uint256 indexed tokenId); | |
/** | |
* @dev Emitted when `owner` enables `approved` to manage the `tokenId` token. | |
*/ | |
event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId); | |
/** | |
* @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets. | |
*/ | |
event ApprovalForAll(address indexed owner, address indexed operator, bool approved); | |
/** | |
* @dev Returns the number of tokens in ``owner``'s account. | |
*/ | |
function balanceOf(address owner) external view returns (uint256 balance); | |
/** | |
* @dev Returns the owner of the `tokenId` token. | |
* | |
* Requirements: | |
* | |
* - `tokenId` must exist. | |
*/ | |
function ownerOf(uint256 tokenId) external view returns (address owner); | |
/** | |
* @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients | |
* are aware of the ERC721 protocol to prevent tokens from being forever locked. | |
* | |
* Requirements: | |
* | |
* - `from` cannot be the zero address. | |
* - `to` cannot be the zero address. | |
* - `tokenId` token must exist and be owned by `from`. | |
* - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}. | |
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. | |
* | |
* Emits a {Transfer} event. | |
*/ | |
function safeTransferFrom( | |
address from, | |
address to, | |
uint256 tokenId | |
) external; | |
/** | |
* @dev Transfers `tokenId` token from `from` to `to`. | |
* | |
* WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible. | |
* | |
* Requirements: | |
* | |
* - `from` cannot be the zero address. | |
* - `to` cannot be the zero address. | |
* - `tokenId` token must be owned by `from`. | |
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. | |
* | |
* Emits a {Transfer} event. | |
*/ | |
function transferFrom( | |
address from, | |
address to, | |
uint256 tokenId | |
) external; | |
/** | |
* @dev Gives permission to `to` to transfer `tokenId` token to another account. | |
* The approval is cleared when the token is transferred. | |
* | |
* Only a single account can be approved at a time, so approving the zero address clears previous approvals. | |
* | |
* Requirements: | |
* | |
* - The caller must own the token or be an approved operator. | |
* - `tokenId` must exist. | |
* | |
* Emits an {Approval} event. | |
*/ | |
function approve(address to, uint256 tokenId) external; | |
/** | |
* @dev Returns the account approved for `tokenId` token. | |
* | |
* Requirements: | |
* | |
* - `tokenId` must exist. | |
*/ | |
function getApproved(uint256 tokenId) external view returns (address operator); | |
/** | |
* @dev Approve or remove `operator` as an operator for the caller. | |
* Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller. | |
* | |
* Requirements: | |
* | |
* - The `operator` cannot be the caller. | |
* | |
* Emits an {ApprovalForAll} event. | |
*/ | |
function setApprovalForAll(address operator, bool _approved) external; | |
/** | |
* @dev Returns if the `operator` is allowed to manage all of the assets of `owner`. | |
* | |
* See {setApprovalForAll} | |
*/ | |
function isApprovedForAll(address owner, address operator) external view returns (bool); | |
/** | |
* @dev Safely transfers `tokenId` token from `from` to `to`. | |
* | |
* Requirements: | |
* | |
* - `from` cannot be the zero address. | |
* - `to` cannot be the zero address. | |
* - `tokenId` token must exist and be owned by `from`. | |
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. | |
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. | |
* | |
* Emits a {Transfer} event. | |
*/ | |
function safeTransferFrom( | |
address from, | |
address to, | |
uint256 tokenId, | |
bytes calldata data | |
) external; | |
} | |
// File: @openzeppelin/contracts/utils/Counters.sol | |
// OpenZeppelin Contracts v4.4.1 (utils/Counters.sol) | |
pragma solidity 0.8.7; | |
/** | |
* @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; | |
} | |
} | |
// File: contracts/Akylles/Akylles.sol | |
// A E T H E R | |
pragma solidity 0.8.7; | |
contract AKYLLESXT is AbstractERC1155Factory, PaymentSplitter { | |
using SafeMath for uint; | |
uint256 constant public MAX_SUPPLY = 4444; | |
uint256 maxPerTx = 1; | |
uint256 maxperaddress = 1; | |
uint256 public mintPrice = 100000000000000000; | |
uint256 public Idx = 0; | |
bool public presaleActivated = false; | |
bool public revealed = false; | |
bool public phase2 = false; | |
bytes32 public merkleRoot; | |
string public provenance; | |
mapping(address => uint256) public purchaseTxs; | |
event Purchased(uint256 indexed index, address indexed account, uint256 amount); | |
event newShare(uint256 indexed id , address indexed account ); | |
constructor( | |
string memory _name, | |
string memory _symbol, | |
string memory _uri, | |
string memory obscurumuri, | |
string memory _extension, | |
string memory _provenance, | |
bytes32 _merkleRoot, | |
address[] memory payees, | |
uint256[] memory shares_ | |
) ERC1155(_uri) PaymentSplitter(payees, shares_) { | |
name_ = _name; | |
symbol_ = _symbol; | |
_obscurumuri = obscurumuri; | |
merkleRoot = _merkleRoot; | |
extension = _extension; | |
provenance = _provenance; | |
} | |
// emergency function | |
function setwhitelistphase2E() public onlyOwner { | |
phase2 = true; | |
mintPrice = 200000000000000000; | |
maxPerTx = 3; | |
maxperaddress = 3; | |
} | |
// | |
function setwhitelistphase2() internal { | |
phase2 = true; | |
mintPrice = 200000000000000000; | |
maxPerTx = 3; | |
maxperaddress = 3; | |
} | |
// unpause and remove all restrictions public sale ready 0.3 eth there is not max per address or max per transaction in the public sale | |
function setPhase4() external onlyOwner { | |
// after unpausing we will set no limits to transactions | |
mintPrice = 300000000000000000; | |
_unpause(); | |
} | |
function ownerOf(uint256 tokenId) external view returns (bool) { | |
return balanceOf(msg.sender, tokenId) != 0; | |
} | |
/** set merkle root for efficient whitelisted addresses verification | |
* | |
*/ | |
function setMerkleRoot(bytes32 _merkleRoot) external onlyOwner { | |
merkleRoot = _merkleRoot; | |
} | |
function setProvenance(string memory __provenance) external onlyOwner { | |
require(frozen == false); | |
provenance = __provenance; | |
} | |
function setPrice(uint256 _mintPrice) external onlyOwner { | |
mintPrice = _mintPrice; | |
} | |
// locking metadata 4 life | |
function freezemeta() external onlyOwner { | |
frozen = true; | |
} | |
/** | |
* @notice edit sale restrictions | |
* | |
* @param _maxPerTx the new max amount of tokens allowed to buy in one tx | |
*/ | |
function editSaleRestrictions(uint8 _maxPerTx) external onlyOwner { | |
maxPerTx = _maxPerTx; | |
} | |
function setPresale(bool _choice) external onlyOwner { | |
presaleActivated = _choice; | |
} | |
function reveal() external onlyOwner { | |
revealed = true; | |
} | |
/** | |
early access sale purchase using merkle trees to verify that a address is whitelisted | |
*/ | |
function whitelistPreSale( | |
uint256 amount, | |
bytes32[] calldata merkleProof | |
) external payable { | |
require( presaleActivated , "Early access: not available yet "); | |
require(amount > 0 && amount <= maxPerTx, "Purchase: amount prohibited"); | |
require(purchaseTxs[msg.sender] + amount <= maxperaddress); // require every address on the whitelist to mint a maximum of their address . | |
bytes32 node = keccak256(abi.encodePacked(msg.sender)); | |
require( | |
MerkleProof.verify(merkleProof, merkleRoot, node), | |
"MerkleDistributor: Invalid proof." | |
); | |
// change mintprice after the first 500 whitelisted addresses purchases | |
if(amount > 1) { | |
_bulkpurchase(amount); | |
} | |
else { | |
_purchase(amount); | |
} | |
// trigger phase 2 after user mints the 500th nft make sure function deosnt get called after phase2 is true | |
if(Idx == 500 && !phase2 ) { | |
setwhitelistphase2(); | |
} | |
} | |
function purchase(uint256 amount) external payable whenNotPaused { | |
if(amount > 1) { | |
_bulkpurchase(amount); | |
} | |
else { | |
_purchase(amount); | |
} | |
} | |
/** | |
* @notice global purchase function | |
used in early access and public sale | |
* | |
* @param amount the amount of tokens to purchase | |
*/ | |
// during opening of the public sale theres no limit for minting and owning tokens in transactions. | |
function _purchase(uint256 amount ) private { | |
require(amount > 0 , "amount cant be zero "); | |
require(Idx + amount <= MAX_SUPPLY , "Purchase: Max supply of 4444 reached"); | |
require(msg.value == amount * mintPrice, "Purchase: Incorrect payment"); | |
Idx += 1; | |
purchaseTxs[msg.sender] += 1; | |
_mint(msg.sender,Idx, amount, ""); | |
emit Purchased(Idx, msg.sender, amount); | |
} | |
// this function is used to bulk purchase Unique nfts. | |
function _bulkpurchase(uint256 amount ) private { | |
require(Idx + amount <= MAX_SUPPLY, "Purchase: Max supply reached "); | |
require(msg.value == amount * mintPrice, "Purchase: Incorrect payment XX"); | |
uint256[] memory ids = new uint256[](amount); | |
uint256[] memory values = new uint256[](amount); | |
Idx += amount; | |
uint256 iterator = Idx; | |
for(uint i = 0 ; i < amount; i++){ | |
ids[i] = iterator; // line up Unique NFTs ID in a array. | |
iterator = iterator-1; | |
values[i] = 1; // for Unique Nfts Supply of every ID MUST be one .1 to be injected in the _mintBatch function | |
} | |
purchaseTxs[msg.sender] += amount; | |
_mintBatch(msg.sender, ids,values, ""); | |
emit Purchased(Idx, msg.sender, amount); | |
} | |
// airdrop nft function for owner only to be able to airdrop Unique nfts | |
function airdrop(address payable reciever, uint256 amount ) external onlyOwner() { | |
require(Idx + amount <= MAX_SUPPLY, "Purchase: Max supply of 4444 reached"); | |
require(amount >= 1); | |
if(amount == 1) { | |
Idx += 1; | |
_mint(reciever, Idx, 1 , ""); | |
} | |
else { | |
uint256[] memory ids = new uint256[](amount); | |
uint256[] memory values = new uint256[](amount); | |
Idx += amount; | |
uint256 iterator = Idx; | |
for(uint i = 0 ; i < amount; i++){ | |
ids[i] = iterator; // line up Unique NFTs ID in a array. | |
iterator = iterator-1; | |
values[i] = 1; // for Unique Nfts Supply of every ID MUST be one .1 to be injected in the _mintBatch function | |
} | |
_mintBatch(reciever, ids,values, ""); | |
} | |
} | |
function release(address payable account) public override { | |
require(msg.sender == account || msg.sender == owner(), "Release: no permission"); | |
super.release(account); | |
} | |
function uri(uint256 _id) public view override returns (string memory) { | |
require(_id <= Idx, "Id deos not exist " ); | |
return revealed ? string(abi.encodePacked(super.uri(_id),Strings.toString(_id) , extension)) : _obscurumuri ; | |
} | |
} |
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