ERC-20
Finance
Overview
Max Total Supply
311,020,080 NOTHING
Holders
479 ( -0.209%)
Market
Price
$0.00 @ 0.000000 ETH (+0.15%)
Onchain Market Cap
$157,665.41
Circulating Supply Market Cap
$0.00
Other Info
Token Contract (WITH 18 Decimals)
Balance
1,762.87185163404563014 NOTHINGValue
$0.89 ( ~0.000257347992870626 Eth) [0.0006%]Loading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
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Contract Source Code Verified (Exact Match)
Contract Name:
Nothing
Compiler Version
v0.8.23+commit.f704f362
Optimization Enabled:
Yes with 1000000 runs
Other Settings:
paris EvmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: MIT /********************************************************************* ,/ // ,// ___ /| |// `__/\_ --(/|___/-/ \|\_-\___ __-_`- /-/ \. |\_-___,-\_____--/_)' ) \ \ -_ / __ \( `( __`\| `\__| |\)\ ) /(/| ,._____., ',--//-| \ | ' / / __. \, / /,---| \ / / / _. \ \ `/`_/ _,' | | | | ( ( \ | ,/\'__/'/ | | | \ \`--, `_/_------______/ \( )/ | | \ \_. \, \___/\ | | \_ \ \ \ \ \ \_ \ \ / \ \ \ \._ \__ \_| | \ \ \___ \ \ | \ \__ \__ \ \_ | \ | | \_____ \ ____ | | | \ \__ ---' .__\ | | | \ \__ --- / ) | \ / \ \____/ / ()( \ `---_ /| \__________/(,--__ \_________. | ./ | | \ \ `---_\--, \ \_,./ | | \ \_ ` \ /`---_______-\ \\ / \ \.___,`| / \ \\ \ \ | \_ \| \ ( |: | \ \ \ | / / | ; \ \ \ \ ( `_' \ | \. \ \. \ `__/ | | \ \ \. \ | | \ \ \ \ ( ) \ | \ | | | | \ \ \ I ` ( __; ( _; ('-_'; |___\ \___: \___: *********************************************************************/ /********************************************************************* ,--, ,.-. , \, '-,-`,'-.' | ._ /| \ , |\ } )/ / `-,', [ , |\ /| | | / \| |/` ,` | | ,.` `,` `, | | _,...( ( .', \ \ __ ,-` ` , , `/ |,' Y ( /_L\ \ \_\,``, ` , , / | ) _,/ \ ' ` ,_ _`_,-,<._.< / / ', `>.,` ` ` ,., |_ | / \/` `, ` ,` | /__,.-` _, `\ -,-..\ _ \ ` / , / `._) _,-\` \ \_,,.) /\ ` / / ) (-,, `` , | ,` ) | \_\ '-` | `( \ / /```( , --, ,' \ |`<` , | / /_,--`\ <\ V /> ,` )<_/) | \ _____) ,-, ,` ` (_,\ \ | /) / __/ / `----` (-, \ ) \ ('_.-._)/ /,` / | / ` `/ \\ V V, /` / ,--\( , <_/`\\ || / ( ,``- \/| \-A.A-`| / ,>,_ )_,..( )\ -,,_-` _--` (_ \|` _,/_ / \_ ,--` \( ` <.,../` `-.._ _,-` *********************************************************************/ pragma solidity 0.8.23; import {IERC20Metadata} from "@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol"; import {ERC20} from "@openzeppelin/contracts/token/ERC20/ERC20.sol"; import {IUniswapV2Factory} from "@uniswap/v2-core/contracts/interfaces/IUniswapV2Factory.sol"; import {Transformable} from "./Transformable.sol"; import "./Common.sol"; /// @title NOTHING contract /// @notice An ERC20 token contract Nothing is ERC20, Transformable { /// @notice Thrown when transform done is called even after it's done error AlreadyTransformed(); /// @notice Thrown when transform() is called in block having token transfer error NotAllowed(); /// @notice Thrown when unlock() is called and transfers are already unlocked error AlreadyUnlocked(); string private constant NOTHING = "NOTHING"; string private constant SOMETHING = "SOMETHING"; uint256 private constant TOTAL_SUPPLY = 311_020_080e18; uint256 public lastUpdateBlock; bool private _unlocked; address private immutable _initialHolder; bool public isTransforming; bool public isTransformed; /// @dev Constructor /// @param initHolder The address of the wallet to which initial tokens will be minted /// @param baseToken The address of the baseToken token /// @param usdt The address of the usdt token /// @param factory The uniswap factory contract address constructor( address initHolder, IERC20Metadata baseToken, IERC20Metadata usdt, IUniswapV2Factory factory ) ERC20(NOTHING, NOTHING) Transformable(baseToken, usdt, factory, 1e18) { if ( initHolder == address(0) || address(baseToken) == address(0) || address(usdt) == address(0) || address(factory) == address(0) ) { revert ZeroAddress(); } _mint(initHolder, TOTAL_SUPPLY); _initialHolder = initHolder; } /// @inheritdoc ERC20 /// @dev May return nothing or something function name() public view override returns (string memory) { if (isTransformed) { return SOMETHING; } return super.name(); } /// @inheritdoc ERC20 /// @dev May return nothing or something function symbol() public view override returns (string memory) { if (isTransformed) { return SOMETHING; } return super.symbol(); } /// @notice Updates unlocked to true so transfers are enabled function unlock() external { if (msg.sender != _initialHolder) { revert NotAllowed(); } if (_unlocked) { revert AlreadyUnlocked(); } _unlocked = true; } /// @notice Updates name and symbol when the price reaches 1 dollar function transform() external { if (block.number == lastUpdateBlock) { revert NotAllowed(); } if (isTransformed) { revert AlreadyTransformed(); } if (!isTransforming) { _initTransform(); isTransforming = true; } else { if (_finalizeTransform()) { isTransformed = true; } isTransforming = false; } } /// @inheritdoc ERC20 /// @dev Overridden to store block number on every update function _update( address from, address to, uint256 value ) internal override { uint256 lastBlock = lastUpdateBlock; if (lastBlock != block.number) { lastUpdateBlock = block.number; } if (!_unlocked && from != _initialHolder) { revert NotAllowed(); } super._update(from, to, value); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (interfaces/draft-IERC6093.sol) pragma solidity ^0.8.20; /** * @dev Standard ERC20 Errors * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC20 tokens. */ interface IERC20Errors { /** * @dev Indicates an error related to the current `balance` of a `sender`. Used in transfers. * @param sender Address whose tokens are being transferred. * @param balance Current balance for the interacting account. * @param needed Minimum amount required to perform a transfer. */ error ERC20InsufficientBalance(address sender, uint256 balance, uint256 needed); /** * @dev Indicates a failure with the token `sender`. Used in transfers. * @param sender Address whose tokens are being transferred. */ error ERC20InvalidSender(address sender); /** * @dev Indicates a failure with the token `receiver`. Used in transfers. * @param receiver Address to which tokens are being transferred. */ error ERC20InvalidReceiver(address receiver); /** * @dev Indicates a failure with the `spender`’s `allowance`. Used in transfers. * @param spender Address that may be allowed to operate on tokens without being their owner. * @param allowance Amount of tokens a `spender` is allowed to operate with. * @param needed Minimum amount required to perform a transfer. */ error ERC20InsufficientAllowance(address spender, uint256 allowance, uint256 needed); /** * @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals. * @param approver Address initiating an approval operation. */ error ERC20InvalidApprover(address approver); /** * @dev Indicates a failure with the `spender` to be approved. Used in approvals. * @param spender Address that may be allowed to operate on tokens without being their owner. */ error ERC20InvalidSpender(address spender); } /** * @dev Standard ERC721 Errors * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC721 tokens. */ interface IERC721Errors { /** * @dev Indicates that an address can't be an owner. For example, `address(0)` is a forbidden owner in EIP-20. * Used in balance queries. * @param owner Address of the current owner of a token. */ error ERC721InvalidOwner(address owner); /** * @dev Indicates a `tokenId` whose `owner` is the zero address. * @param tokenId Identifier number of a token. */ error ERC721NonexistentToken(uint256 tokenId); /** * @dev Indicates an error related to the ownership over a particular token. Used in transfers. * @param sender Address whose tokens are being transferred. * @param tokenId Identifier number of a token. * @param owner Address of the current owner of a token. */ error ERC721IncorrectOwner(address sender, uint256 tokenId, address owner); /** * @dev Indicates a failure with the token `sender`. Used in transfers. * @param sender Address whose tokens are being transferred. */ error ERC721InvalidSender(address sender); /** * @dev Indicates a failure with the token `receiver`. Used in transfers. * @param receiver Address to which tokens are being transferred. */ error ERC721InvalidReceiver(address receiver); /** * @dev Indicates a failure with the `operator`’s approval. Used in transfers. * @param operator Address that may be allowed to operate on tokens without being their owner. * @param tokenId Identifier number of a token. */ error ERC721InsufficientApproval(address operator, uint256 tokenId); /** * @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals. * @param approver Address initiating an approval operation. */ error ERC721InvalidApprover(address approver); /** * @dev Indicates a failure with the `operator` to be approved. Used in approvals. * @param operator Address that may be allowed to operate on tokens without being their owner. */ error ERC721InvalidOperator(address operator); } /** * @dev Standard ERC1155 Errors * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC1155 tokens. */ interface IERC1155Errors { /** * @dev Indicates an error related to the current `balance` of a `sender`. Used in transfers. * @param sender Address whose tokens are being transferred. * @param balance Current balance for the interacting account. * @param needed Minimum amount required to perform a transfer. * @param tokenId Identifier number of a token. */ error ERC1155InsufficientBalance(address sender, uint256 balance, uint256 needed, uint256 tokenId); /** * @dev Indicates a failure with the token `sender`. Used in transfers. * @param sender Address whose tokens are being transferred. */ error ERC1155InvalidSender(address sender); /** * @dev Indicates a failure with the token `receiver`. Used in transfers. * @param receiver Address to which tokens are being transferred. */ error ERC1155InvalidReceiver(address receiver); /** * @dev Indicates a failure with the `operator`’s approval. Used in transfers. * @param operator Address that may be allowed to operate on tokens without being their owner. * @param owner Address of the current owner of a token. */ error ERC1155MissingApprovalForAll(address operator, address owner); /** * @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals. * @param approver Address initiating an approval operation. */ error ERC1155InvalidApprover(address approver); /** * @dev Indicates a failure with the `operator` to be approved. Used in approvals. * @param operator Address that may be allowed to operate on tokens without being their owner. */ error ERC1155InvalidOperator(address operator); /** * @dev Indicates an array length mismatch between ids and values in a safeBatchTransferFrom operation. * Used in batch transfers. * @param idsLength Length of the array of token identifiers * @param valuesLength Length of the array of token amounts */ error ERC1155InvalidArrayLength(uint256 idsLength, uint256 valuesLength); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/ERC20.sol) pragma solidity ^0.8.20; import {IERC20} from "./IERC20.sol"; import {IERC20Metadata} from "./extensions/IERC20Metadata.sol"; import {Context} from "../../utils/Context.sol"; import {IERC20Errors} from "../../interfaces/draft-IERC6093.sol"; /** * @dev Implementation of the {IERC20} interface. * * This implementation is agnostic to the way tokens are created. This means * that a supply mechanism has to be added in a derived contract using {_mint}. * * TIP: For a detailed writeup see our guide * https://forum.openzeppelin.com/t/how-to-implement-erc20-supply-mechanisms/226[How * to implement supply mechanisms]. * * The default value of {decimals} is 18. To change this, you should override * this function so it returns a different value. * * We have followed general OpenZeppelin Contracts guidelines: functions revert * instead returning `false` on failure. This behavior is nonetheless * conventional and does not conflict with the expectations of ERC20 * applications. * * Additionally, an {Approval} event is emitted on calls to {transferFrom}. * This allows applications to reconstruct the allowance for all accounts just * by listening to said events. Other implementations of the EIP may not emit * these events, as it isn't required by the specification. */ abstract contract ERC20 is Context, IERC20, IERC20Metadata, IERC20Errors { mapping(address account => uint256) private _balances; mapping(address account => mapping(address spender => uint256)) private _allowances; uint256 private _totalSupply; string private _name; string private _symbol; /** * @dev Sets the values for {name} and {symbol}. * * All two of these values are immutable: they can only be set once during * construction. */ constructor(string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; } /** * @dev Returns the name of the token. */ function name() public view virtual returns (string memory) { return _name; } /** * @dev Returns the symbol of the token, usually a shorter version of the * name. */ function symbol() public view virtual returns (string memory) { return _symbol; } /** * @dev Returns the number of decimals used to get its user representation. * For example, if `decimals` equals `2`, a balance of `505` tokens should * be displayed to a user as `5.05` (`505 / 10 ** 2`). * * Tokens usually opt for a value of 18, imitating the relationship between * Ether and Wei. This is the default value returned by this function, unless * it's overridden. * * NOTE: This information is only used for _display_ purposes: it in * no way affects any of the arithmetic of the contract, including * {IERC20-balanceOf} and {IERC20-transfer}. */ function decimals() public view virtual returns (uint8) { return 18; } /** * @dev See {IERC20-totalSupply}. */ function totalSupply() public view virtual returns (uint256) { return _totalSupply; } /** * @dev See {IERC20-balanceOf}. */ function balanceOf(address account) public view virtual returns (uint256) { return _balances[account]; } /** * @dev See {IERC20-transfer}. * * Requirements: * * - `to` cannot be the zero address. * - the caller must have a balance of at least `value`. */ function transfer(address to, uint256 value) public virtual returns (bool) { address owner = _msgSender(); _transfer(owner, to, value); return true; } /** * @dev See {IERC20-allowance}. */ function allowance(address owner, address spender) public view virtual returns (uint256) { return _allowances[owner][spender]; } /** * @dev See {IERC20-approve}. * * NOTE: If `value` is the maximum `uint256`, the allowance is not updated on * `transferFrom`. This is semantically equivalent to an infinite approval. * * Requirements: * * - `spender` cannot be the zero address. */ function approve(address spender, uint256 value) public virtual returns (bool) { address owner = _msgSender(); _approve(owner, spender, value); return true; } /** * @dev See {IERC20-transferFrom}. * * Emits an {Approval} event indicating the updated allowance. This is not * required by the EIP. See the note at the beginning of {ERC20}. * * NOTE: Does not update the allowance if the current allowance * is the maximum `uint256`. * * Requirements: * * - `from` and `to` cannot be the zero address. * - `from` must have a balance of at least `value`. * - the caller must have allowance for ``from``'s tokens of at least * `value`. */ function transferFrom(address from, address to, uint256 value) public virtual returns (bool) { address spender = _msgSender(); _spendAllowance(from, spender, value); _transfer(from, to, value); return true; } /** * @dev Moves a `value` amount of tokens from `from` to `to`. * * This internal function is equivalent to {transfer}, and can be used to * e.g. implement automatic token fees, slashing mechanisms, etc. * * Emits a {Transfer} event. * * NOTE: This function is not virtual, {_update} should be overridden instead. */ function _transfer(address from, address to, uint256 value) internal { if (from == address(0)) { revert ERC20InvalidSender(address(0)); } if (to == address(0)) { revert ERC20InvalidReceiver(address(0)); } _update(from, to, value); } /** * @dev Transfers a `value` amount of tokens from `from` to `to`, or alternatively mints (or burns) if `from` * (or `to`) is the zero address. All customizations to transfers, mints, and burns should be done by overriding * this function. * * Emits a {Transfer} event. */ function _update(address from, address to, uint256 value) internal virtual { if (from == address(0)) { // Overflow check required: The rest of the code assumes that totalSupply never overflows _totalSupply += value; } else { uint256 fromBalance = _balances[from]; if (fromBalance < value) { revert ERC20InsufficientBalance(from, fromBalance, value); } unchecked { // Overflow not possible: value <= fromBalance <= totalSupply. _balances[from] = fromBalance - value; } } if (to == address(0)) { unchecked { // Overflow not possible: value <= totalSupply or value <= fromBalance <= totalSupply. _totalSupply -= value; } } else { unchecked { // Overflow not possible: balance + value is at most totalSupply, which we know fits into a uint256. _balances[to] += value; } } emit Transfer(from, to, value); } /** * @dev Creates a `value` amount of tokens and assigns them to `account`, by transferring it from address(0). * Relies on the `_update` mechanism * * Emits a {Transfer} event with `from` set to the zero address. * * NOTE: This function is not virtual, {_update} should be overridden instead. */ function _mint(address account, uint256 value) internal { if (account == address(0)) { revert ERC20InvalidReceiver(address(0)); } _update(address(0), account, value); } /** * @dev Destroys a `value` amount of tokens from `account`, lowering the total supply. * Relies on the `_update` mechanism. * * Emits a {Transfer} event with `to` set to the zero address. * * NOTE: This function is not virtual, {_update} should be overridden instead */ function _burn(address account, uint256 value) internal { if (account == address(0)) { revert ERC20InvalidSender(address(0)); } _update(account, address(0), value); } /** * @dev Sets `value` as the allowance of `spender` over the `owner` s tokens. * * This internal function is equivalent to `approve`, and can be used to * e.g. set automatic allowances for certain subsystems, etc. * * Emits an {Approval} event. * * Requirements: * * - `owner` cannot be the zero address. * - `spender` cannot be the zero address. * * Overrides to this logic should be done to the variant with an additional `bool emitEvent` argument. */ function _approve(address owner, address spender, uint256 value) internal { _approve(owner, spender, value, true); } /** * @dev Variant of {_approve} with an optional flag to enable or disable the {Approval} event. * * By default (when calling {_approve}) the flag is set to true. On the other hand, approval changes made by * `_spendAllowance` during the `transferFrom` operation set the flag to false. This saves gas by not emitting any * `Approval` event during `transferFrom` operations. * * Anyone who wishes to continue emitting `Approval` events on the`transferFrom` operation can force the flag to * true using the following override: * ``` * function _approve(address owner, address spender, uint256 value, bool) internal virtual override { * super._approve(owner, spender, value, true); * } * ``` * * Requirements are the same as {_approve}. */ function _approve(address owner, address spender, uint256 value, bool emitEvent) internal virtual { if (owner == address(0)) { revert ERC20InvalidApprover(address(0)); } if (spender == address(0)) { revert ERC20InvalidSpender(address(0)); } _allowances[owner][spender] = value; if (emitEvent) { emit Approval(owner, spender, value); } } /** * @dev Updates `owner` s allowance for `spender` based on spent `value`. * * Does not update the allowance value in case of infinite allowance. * Revert if not enough allowance is available. * * Does not emit an {Approval} event. */ function _spendAllowance(address owner, address spender, uint256 value) internal virtual { uint256 currentAllowance = allowance(owner, spender); if (currentAllowance != type(uint256).max) { if (currentAllowance < value) { revert ERC20InsufficientAllowance(spender, currentAllowance, value); } unchecked { _approve(owner, spender, currentAllowance - value, false); } } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/extensions/IERC20Metadata.sol) pragma solidity ^0.8.20; import {IERC20} from "../IERC20.sol"; /** * @dev Interface for the optional metadata functions from the ERC20 standard. */ 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 v5.0.0) (token/ERC20/IERC20.sol) pragma solidity ^0.8.20; /** * @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 value of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the value of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves a `value` amount of 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 value) 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 a `value` amount of tokens 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 value) external returns (bool); /** * @dev Moves a `value` amount of tokens from `from` to `to` using the * allowance mechanism. `value` 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 value) external returns (bool); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.1) (utils/Context.sol) pragma solidity ^0.8.20; /** * @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; } function _contextSuffixLength() internal view virtual returns (uint256) { return 0; } }
pragma solidity >=0.5.0; interface IUniswapV2Factory { event PairCreated(address indexed token0, address indexed token1, address pair, uint); function feeTo() external view returns (address); function feeToSetter() external view returns (address); function getPair(address tokenA, address tokenB) external view returns (address pair); function allPairs(uint) external view returns (address pair); function allPairsLength() external view returns (uint); function createPair(address tokenA, address tokenB) external returns (address pair); function setFeeTo(address) external; function setFeeToSetter(address) external; }
pragma solidity >=0.5.0; interface IUniswapV2Pair { event Approval(address indexed owner, address indexed spender, uint value); event Transfer(address indexed from, address indexed to, uint value); function name() external pure returns (string memory); function symbol() external pure returns (string memory); function decimals() external pure returns (uint8); function totalSupply() external view returns (uint); function balanceOf(address owner) external view returns (uint); function allowance(address owner, address spender) external view returns (uint); function approve(address spender, uint value) external returns (bool); function transfer(address to, uint value) external returns (bool); function transferFrom(address from, address to, uint value) external returns (bool); function DOMAIN_SEPARATOR() external view returns (bytes32); function PERMIT_TYPEHASH() external pure returns (bytes32); function nonces(address owner) external view returns (uint); function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external; event Mint(address indexed sender, uint amount0, uint amount1); event Burn(address indexed sender, uint amount0, uint amount1, address indexed to); event Swap( address indexed sender, uint amount0In, uint amount1In, uint amount0Out, uint amount1Out, address indexed to ); event Sync(uint112 reserve0, uint112 reserve1); function MINIMUM_LIQUIDITY() external pure returns (uint); function factory() external view returns (address); function token0() external view returns (address); function token1() external view returns (address); function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast); function price0CumulativeLast() external view returns (uint); function price1CumulativeLast() external view returns (uint); function kLast() external view returns (uint); function mint(address to) external returns (uint liquidity); function burn(address to) external returns (uint amount0, uint amount1); function swap(uint amount0Out, uint amount1Out, address to, bytes calldata data) external; function skim(address to) external; function sync() external; function initialize(address, address) external; }
// SPDX-License-Identifier: MIT pragma solidity 0.8.23; /// @notice Thrown when updating an address with zero address error ZeroAddress();
// SPDX-License-Identifier: MIT pragma solidity 0.8.23; import {IERC20Metadata} from "@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol"; import {IUniswapV2Factory} from "@uniswap/v2-core/contracts/interfaces/IUniswapV2Factory.sol"; import {UniswapV2Helper} from "./UniswapV2Helper.sol"; import {ZeroAddress} from "./Common.sol"; /// @title Transformable contract /// @dev Implements a price oracle that computes the price and transforms the contract accordingly, /// @notice Please note that the price if once met the threshold needs to be above the threshold /// for a number of minutes for the transformation to happen abstract contract Transformable { /// @notice Thrown when price of token is less than 1 dollar error PriceTooLow(); /// @notice Thrown when second update is called in less than PRICE_TRANSFORMATION_INTERVAL error PeriodNotOver(); uint256 public constant PRICE_TRANSFORMATION_INTERVAL = 2 minutes; uint256 private immutable ONE_USDT; uint256 private immutable ONE_NOTHING; uint256 private _initBlock; address private immutable NOTHING; address private immutable BASE_TOKEN; IUniswapV2Factory public immutable FACTORY; IERC20Metadata private immutable USDT; /// @dev Emitted when transform is initiated event TransformInitiated(); /// @dev Emitted when transform is finalized event Transformed(); /// @dev Constructor /// @param baseToken The address of the baseToken token /// @param usdt The total the usdt token /// @param factory The uniswap factory contract address /// @param oneNothing The one nothing token amount constructor( IERC20Metadata baseToken, IERC20Metadata usdt, IUniswapV2Factory factory, uint256 oneNothing ) { if ( address(baseToken) == address(0) || address(usdt) == address(0) || address(factory) == address(0) ) { revert ZeroAddress(); } NOTHING = address(this); BASE_TOKEN = address(baseToken); USDT = usdt; ONE_USDT = 10 ** USDT.decimals(); ONE_NOTHING = oneNothing; FACTORY = factory; } /// @dev Initiates the transform process, only called when token price reaches 1 dollar function _initTransform() internal { uint256 priceUSDT = _getPrice(); if (priceUSDT < ONE_USDT) { revert PriceTooLow(); } _initBlock = block.timestamp; emit TransformInitiated(); } /// @dev Finalizes the transform process, only called after a period of PRICE_TRANSFORMATION_INTERVAL when /// transform is initiated function _finalizeTransform() internal returns (bool) { uint256 blockTimestampPrev = _initBlock; uint256 timeElapsed = block.timestamp - blockTimestampPrev; if (timeElapsed < PRICE_TRANSFORMATION_INTERVAL) { revert PeriodNotOver(); } uint256 priceUSDT = _getPrice(); if (priceUSDT >= ONE_USDT) { emit Transformed(); return true; } _initBlock = 0; return false; } /// @dev Gives the current price of token function _getPrice() private view returns (uint256 priceUSDT) { address[] memory path = new address[](3); path[0] = NOTHING; path[1] = BASE_TOKEN; path[2] = address(USDT); priceUSDT = UniswapV2Helper.getAmountsOut(FACTORY, ONE_NOTHING, path)[ path.length - 1 ]; } }
// SPDX-License-Identifier: MIT pragma solidity 0.8.23; import {IUniswapV2Pair} from "@uniswap/v2-core/contracts/interfaces/IUniswapV2Pair.sol"; import {IUniswapV2Factory} from "@uniswap/v2-core/contracts/interfaces/IUniswapV2Factory.sol"; import "./Common.sol"; library UniswapV2Helper { /// @notice Thrown when two tokens are identical error IdenticalAddresses(); /// @notice Thrown when input amount is zero error InsufficientAmount(); /// @notice Thrown when there is no liquidity of the tokens error InsufficientLiquidity(); /// @notice Thrown when path array length is less than two error InvalidPath(); /// @dev Returns sorted token addresses, used to handle return values from pairs sorted in this order function sortTokens( address tokenA, address tokenB ) internal pure returns (address token0, address token1) { if (tokenA == tokenB) { revert IdenticalAddresses(); } (token0, token1) = tokenA < tokenB ? (tokenA, tokenB) : (tokenB, tokenA); if (token0 == address(0)) { revert ZeroAddress(); } } /// @dev Calculates the CREATE2 address for a pair without making any external calls function pairFor( IUniswapV2Factory factory, address tokenA, address tokenB ) internal view returns (address pair) { (address token0, address token1) = sortTokens(tokenA, tokenB); pair = factory.getPair(token0, token1); } /// @dev Fetches and sorts the reserves for a pair function getReserves( IUniswapV2Factory factory, address tokenA, address tokenB ) internal view returns (uint112 reserveA, uint112 reserveB) { (address token0, ) = sortTokens(tokenA, tokenB); IUniswapV2Pair pair = IUniswapV2Pair(pairFor(factory, tokenA, tokenB)); uint112 reserve0; uint112 reserve1; if (address(pair) != address(0)) { (reserve0, reserve1, ) = IUniswapV2Pair(pair).getReserves(); } (reserveA, reserveB) = tokenA == token0 ? (reserve0, reserve1) : (reserve1, reserve0); } /// @dev Given some amount of an asset and pair reserves, returns an equivalent amount of the other function quote( uint256 amountA, uint256 reserveA, uint256 reserveB ) internal pure returns (uint256 amountB) { if (amountA == 0) { revert InsufficientAmount(); } if (reserveA == 0 && reserveB == 0) { revert InsufficientLiquidity(); } amountB = (amountA * reserveB) / reserveA; } /// @dev Given an input amount of an asset and pair reserves, returns the maximum output amount of the other asset function getAmountOut( uint256 amountIn, uint256 reserveIn, uint256 reserveOut ) internal pure returns (uint256 amountOut) { if (amountIn == 0) { revert InsufficientAmount(); } if (reserveIn == 0 && reserveOut == 0) { revert InsufficientLiquidity(); } uint256 numerator = amountIn * reserveOut; uint256 denominator = reserveIn; amountOut = numerator / denominator; } /// @dev Performs chained getAmountOut calculations on any number of pairs function getAmountsOut( IUniswapV2Factory factory, uint256 amountIn, address[] memory path ) internal view returns (uint256[] memory amounts) { if (path.length < 2) { revert InvalidPath(); } amounts = new uint256[](path.length); amounts[0] = amountIn; for (uint256 i; i < path.length - 1; i++) { (uint256 reserveIn, uint256 reserveOut) = getReserves( factory, path[i], path[i + 1] ); amounts[i + 1] = getAmountOut(amounts[i], reserveIn, reserveOut); } } }
{ "optimizer": { "enabled": true, "runs": 1000000 }, "evmVersion": "paris", "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } }, "libraries": {} }
Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
[{"inputs":[{"internalType":"address","name":"initHolder","type":"address"},{"internalType":"contract IERC20Metadata","name":"baseToken","type":"address"},{"internalType":"contract IERC20Metadata","name":"usdt","type":"address"},{"internalType":"contract IUniswapV2Factory","name":"factory","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"AlreadyTransformed","type":"error"},{"inputs":[],"name":"AlreadyUnlocked","type":"error"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"allowance","type":"uint256"},{"internalType":"uint256","name":"needed","type":"uint256"}],"name":"ERC20InsufficientAllowance","type":"error"},{"inputs":[{"internalType":"address","name":"sender","type":"address"},{"internalType":"uint256","name":"balance","type":"uint256"},{"internalType":"uint256","name":"needed","type":"uint256"}],"name":"ERC20InsufficientBalance","type":"error"},{"inputs":[{"internalType":"address","name":"approver","type":"address"}],"name":"ERC20InvalidApprover","type":"error"},{"inputs":[{"internalType":"address","name":"receiver","type":"address"}],"name":"ERC20InvalidReceiver","type":"error"},{"inputs":[{"internalType":"address","name":"sender","type":"address"}],"name":"ERC20InvalidSender","type":"error"},{"inputs":[{"internalType":"address","name":"spender","type":"address"}],"name":"ERC20InvalidSpender","type":"error"},{"inputs":[],"name":"IdenticalAddresses","type":"error"},{"inputs":[],"name":"InsufficientAmount","type":"error"},{"inputs":[],"name":"InsufficientLiquidity","type":"error"},{"inputs":[],"name":"InvalidPath","type":"error"},{"inputs":[],"name":"NotAllowed","type":"error"},{"inputs":[],"name":"PeriodNotOver","type":"error"},{"inputs":[],"name":"PriceTooLow","type":"error"},{"inputs":[],"name":"ZeroAddress","type":"error"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"spender","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Transfer","type":"event"},{"anonymous":false,"inputs":[],"name":"TransformInitiated","type":"event"},{"anonymous":false,"inputs":[],"name":"Transformed","type":"event"},{"inputs":[],"name":"FACTORY","outputs":[{"internalType":"contract IUniswapV2Factory","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"PRICE_TRANSFORMATION_INTERVAL","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"spender","type":"address"}],"name":"allowance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"}],"name":"approve","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"decimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"isTransformed","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"isTransforming","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"lastUpdateBlock","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"transform","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"unlock","outputs":[],"stateMutability":"nonpayable","type":"function"}]
Contract Creation Code
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
000000000000000000000000b20f9d5e82c3d0f34877db3887249f1a26d0b9850000000000000000000000004385328cc4d643ca98dfea734360c0f596c83449000000000000000000000000dac17f958d2ee523a2206206994597c13d831ec70000000000000000000000005c69bee701ef814a2b6a3edd4b1652cb9cc5aa6f
-----Decoded View---------------
Arg [0] : initHolder (address): 0xb20f9d5e82C3d0f34877Db3887249f1A26D0B985
Arg [1] : baseToken (address): 0x4385328cc4D643Ca98DfEA734360C0F596C83449
Arg [2] : usdt (address): 0xdAC17F958D2ee523a2206206994597C13D831ec7
Arg [3] : factory (address): 0x5C69bEe701ef814a2B6a3EDD4B1652CB9cc5aA6f
-----Encoded View---------------
4 Constructor Arguments found :
Arg [0] : 000000000000000000000000b20f9d5e82c3d0f34877db3887249f1a26d0b985
Arg [1] : 0000000000000000000000004385328cc4d643ca98dfea734360c0f596c83449
Arg [2] : 000000000000000000000000dac17f958d2ee523a2206206994597c13d831ec7
Arg [3] : 0000000000000000000000005c69bee701ef814a2b6a3edd4b1652cb9cc5aa6f
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