ERC-20
Overview
Max Total Supply
100,000,000 GAMMA
Holders
3,132
Market
Onchain Market Cap
$0.00
Circulating Supply Market Cap
-
Other Info
Token Contract (WITH 18 Decimals)
Loading...
Loading
Loading...
Loading
Loading...
Loading
# | Exchange | Pair | Price | 24H Volume | % Volume |
---|
Contract Name:
Gamma
Compiler Version
v0.7.6+commit.7338295f
Optimization Enabled:
Yes with 800 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: Unlicense pragma solidity 0.7.6; import "@openzeppelin/contracts/drafts/ERC20Permit.sol"; import "@openzeppelin/contracts/token/ERC20/ERC20Snapshot.sol"; contract Gamma is ERC20Permit, ERC20Snapshot { address public owner; modifier onlyOwner { require(msg.sender == owner, "only owner"); _; } constructor( string memory name, string memory symbol, uint8 decimals ) ERC20Permit(name) ERC20(name, symbol){ owner = msg.sender; _setupDecimals(decimals); _mint(owner, 100000000000000000000000000); } function snapshot() onlyOwner external { _snapshot(); } function transferOwnership(address newOwner) external onlyOwner { owner = newOwner; } function _beforeTokenTransfer(address from, address to, uint256 amount) internal override(ERC20, ERC20Snapshot) { super._beforeTokenTransfer(from, to, amount); } }
// SPDX-License-Identifier: MIT pragma solidity >=0.6.5 <0.8.0; import "../token/ERC20/ERC20.sol"; import "./IERC20Permit.sol"; import "../cryptography/ECDSA.sol"; import "../utils/Counters.sol"; import "./EIP712.sol"; /** * @dev Implementation of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612]. * * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by * presenting a message signed by the account. By not relying on `{IERC20-approve}`, the token holder account doesn't * need to send a transaction, and thus is not required to hold Ether at all. * * _Available since v3.4._ */ abstract contract ERC20Permit is ERC20, IERC20Permit, EIP712 { using Counters for Counters.Counter; mapping (address => Counters.Counter) private _nonces; // solhint-disable-next-line var-name-mixedcase bytes32 private immutable _PERMIT_TYPEHASH = keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)"); /** * @dev Initializes the {EIP712} domain separator using the `name` parameter, and setting `version` to `"1"`. * * It's a good idea to use the same `name` that is defined as the ERC20 token name. */ constructor(string memory name) internal EIP712(name, "1") { } /** * @dev See {IERC20Permit-permit}. */ function permit(address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) public virtual override { // solhint-disable-next-line not-rely-on-time require(block.timestamp <= deadline, "ERC20Permit: expired deadline"); bytes32 structHash = keccak256( abi.encode( _PERMIT_TYPEHASH, owner, spender, value, _nonces[owner].current(), deadline ) ); bytes32 hash = _hashTypedDataV4(structHash); address signer = ECDSA.recover(hash, v, r, s); require(signer == owner, "ERC20Permit: invalid signature"); _nonces[owner].increment(); _approve(owner, spender, value); } /** * @dev See {IERC20Permit-nonces}. */ function nonces(address owner) public view override returns (uint256) { return _nonces[owner].current(); } /** * @dev See {IERC20Permit-DOMAIN_SEPARATOR}. */ // solhint-disable-next-line func-name-mixedcase function DOMAIN_SEPARATOR() external view override returns (bytes32) { return _domainSeparatorV4(); } }
// SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; import "../../math/SafeMath.sol"; import "../../utils/Arrays.sol"; import "../../utils/Counters.sol"; import "./ERC20.sol"; /** * @dev This contract extends an ERC20 token with a snapshot mechanism. When a snapshot is created, the balances and * total supply at the time are recorded for later access. * * This can be used to safely create mechanisms based on token balances such as trustless dividends or weighted voting. * In naive implementations it's possible to perform a "double spend" attack by reusing the same balance from different * accounts. By using snapshots to calculate dividends or voting power, those attacks no longer apply. It can also be * used to create an efficient ERC20 forking mechanism. * * Snapshots are created by the internal {_snapshot} function, which will emit the {Snapshot} event and return a * snapshot id. To get the total supply at the time of a snapshot, call the function {totalSupplyAt} with the snapshot * id. To get the balance of an account at the time of a snapshot, call the {balanceOfAt} function with the snapshot id * and the account address. * * ==== Gas Costs * * Snapshots are efficient. Snapshot creation is _O(1)_. Retrieval of balances or total supply from a snapshot is _O(log * n)_ in the number of snapshots that have been created, although _n_ for a specific account will generally be much * smaller since identical balances in subsequent snapshots are stored as a single entry. * * There is a constant overhead for normal ERC20 transfers due to the additional snapshot bookkeeping. This overhead is * only significant for the first transfer that immediately follows a snapshot for a particular account. Subsequent * transfers will have normal cost until the next snapshot, and so on. */ abstract contract ERC20Snapshot is ERC20 { // Inspired by Jordi Baylina's MiniMeToken to record historical balances: // https://github.com/Giveth/minimd/blob/ea04d950eea153a04c51fa510b068b9dded390cb/contracts/MiniMeToken.sol using SafeMath for uint256; using Arrays for uint256[]; using Counters for Counters.Counter; // Snapshotted values have arrays of ids and the value corresponding to that id. These could be an array of a // Snapshot struct, but that would impede usage of functions that work on an array. struct Snapshots { uint256[] ids; uint256[] values; } mapping (address => Snapshots) private _accountBalanceSnapshots; Snapshots private _totalSupplySnapshots; // Snapshot ids increase monotonically, with the first value being 1. An id of 0 is invalid. Counters.Counter private _currentSnapshotId; /** * @dev Emitted by {_snapshot} when a snapshot identified by `id` is created. */ event Snapshot(uint256 id); /** * @dev Creates a new snapshot and returns its snapshot id. * * Emits a {Snapshot} event that contains the same id. * * {_snapshot} is `internal` and you have to decide how to expose it externally. Its usage may be restricted to a * set of accounts, for example using {AccessControl}, or it may be open to the public. * * [WARNING] * ==== * While an open way of calling {_snapshot} is required for certain trust minimization mechanisms such as forking, * you must consider that it can potentially be used by attackers in two ways. * * First, it can be used to increase the cost of retrieval of values from snapshots, although it will grow * logarithmically thus rendering this attack ineffective in the long term. Second, it can be used to target * specific accounts and increase the cost of ERC20 transfers for them, in the ways specified in the Gas Costs * section above. * * We haven't measured the actual numbers; if this is something you're interested in please reach out to us. * ==== */ function _snapshot() internal virtual returns (uint256) { _currentSnapshotId.increment(); uint256 currentId = _currentSnapshotId.current(); emit Snapshot(currentId); return currentId; } /** * @dev Retrieves the balance of `account` at the time `snapshotId` was created. */ function balanceOfAt(address account, uint256 snapshotId) public view virtual returns (uint256) { (bool snapshotted, uint256 value) = _valueAt(snapshotId, _accountBalanceSnapshots[account]); return snapshotted ? value : balanceOf(account); } /** * @dev Retrieves the total supply at the time `snapshotId` was created. */ function totalSupplyAt(uint256 snapshotId) public view virtual returns(uint256) { (bool snapshotted, uint256 value) = _valueAt(snapshotId, _totalSupplySnapshots); return snapshotted ? value : totalSupply(); } // Update balance and/or total supply snapshots before the values are modified. This is implemented // in the _beforeTokenTransfer hook, which is executed for _mint, _burn, and _transfer operations. function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual override { super._beforeTokenTransfer(from, to, amount); if (from == address(0)) { // mint _updateAccountSnapshot(to); _updateTotalSupplySnapshot(); } else if (to == address(0)) { // burn _updateAccountSnapshot(from); _updateTotalSupplySnapshot(); } else { // transfer _updateAccountSnapshot(from); _updateAccountSnapshot(to); } } function _valueAt(uint256 snapshotId, Snapshots storage snapshots) private view returns (bool, uint256) { require(snapshotId > 0, "ERC20Snapshot: id is 0"); // solhint-disable-next-line max-line-length require(snapshotId <= _currentSnapshotId.current(), "ERC20Snapshot: nonexistent id"); // When a valid snapshot is queried, there are three possibilities: // a) The queried value was not modified after the snapshot was taken. Therefore, a snapshot entry was never // created for this id, and all stored snapshot ids are smaller than the requested one. The value that corresponds // to this id is the current one. // b) The queried value was modified after the snapshot was taken. Therefore, there will be an entry with the // requested id, and its value is the one to return. // c) More snapshots were created after the requested one, and the queried value was later modified. There will be // no entry for the requested id: the value that corresponds to it is that of the smallest snapshot id that is // larger than the requested one. // // In summary, we need to find an element in an array, returning the index of the smallest value that is larger if // it is not found, unless said value doesn't exist (e.g. when all values are smaller). Arrays.findUpperBound does // exactly this. uint256 index = snapshots.ids.findUpperBound(snapshotId); if (index == snapshots.ids.length) { return (false, 0); } else { return (true, snapshots.values[index]); } } function _updateAccountSnapshot(address account) private { _updateSnapshot(_accountBalanceSnapshots[account], balanceOf(account)); } function _updateTotalSupplySnapshot() private { _updateSnapshot(_totalSupplySnapshots, totalSupply()); } function _updateSnapshot(Snapshots storage snapshots, uint256 currentValue) private { uint256 currentId = _currentSnapshotId.current(); if (_lastSnapshotId(snapshots.ids) < currentId) { snapshots.ids.push(currentId); snapshots.values.push(currentValue); } } function _lastSnapshotId(uint256[] storage ids) private view returns (uint256) { if (ids.length == 0) { return 0; } else { return ids[ids.length - 1]; } } }
// SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; import "../../utils/Context.sol"; import "./IERC20.sol"; import "../../math/SafeMath.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}. * For a generic mechanism see {ERC20PresetMinterPauser}. * * TIP: For a detailed writeup see our guide * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How * to implement supply mechanisms]. * * We have followed general OpenZeppelin guidelines: functions revert instead * of 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. * * Finally, the non-standard {decreaseAllowance} and {increaseAllowance} * functions have been added to mitigate the well-known issues around setting * allowances. See {IERC20-approve}. */ contract ERC20 is Context, IERC20 { using SafeMath for uint256; mapping (address => uint256) private _balances; mapping (address => mapping (address => uint256)) private _allowances; uint256 private _totalSupply; string private _name; string private _symbol; uint8 private _decimals; /** * @dev Sets the values for {name} and {symbol}, initializes {decimals} with * a default value of 18. * * To select a different value for {decimals}, use {_setupDecimals}. * * All three of these values are immutable: they can only be set once during * construction. */ constructor (string memory name_, string memory symbol_) public { _name = name_; _symbol = symbol_; _decimals = 18; } /** * @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 value {ERC20} uses, unless {_setupDecimals} is * called. * * 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 _decimals; } /** * @dev See {IERC20-totalSupply}. */ function totalSupply() public view virtual override returns (uint256) { return _totalSupply; } /** * @dev See {IERC20-balanceOf}. */ function balanceOf(address account) public view virtual override returns (uint256) { return _balances[account]; } /** * @dev See {IERC20-transfer}. * * Requirements: * * - `recipient` cannot be the zero address. * - the caller must have a balance of at least `amount`. */ function transfer(address recipient, uint256 amount) public virtual override returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } /** * @dev See {IERC20-allowance}. */ function allowance(address owner, address spender) public view virtual override returns (uint256) { return _allowances[owner][spender]; } /** * @dev See {IERC20-approve}. * * Requirements: * * - `spender` cannot be the zero address. */ function approve(address spender, uint256 amount) public virtual override returns (bool) { _approve(_msgSender(), spender, amount); 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}. * * Requirements: * * - `sender` and `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. * - the caller must have allowance for ``sender``'s tokens of at least * `amount`. */ function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) { _transfer(sender, recipient, amount); _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance")); return true; } /** * @dev Atomically increases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. */ function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue)); return true; } /** * @dev Atomically decreases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. * - `spender` must have allowance for the caller of at least * `subtractedValue`. */ function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero")); return true; } /** * @dev Moves tokens `amount` from `sender` to `recipient`. * * This is internal function is equivalent to {transfer}, and can be used to * e.g. implement automatic token fees, slashing mechanisms, etc. * * Emits a {Transfer} event. * * Requirements: * * - `sender` cannot be the zero address. * - `recipient` cannot be the zero address. * - `sender` must have a balance of at least `amount`. */ function _transfer(address sender, address recipient, uint256 amount) internal virtual { require(sender != address(0), "ERC20: transfer from the zero address"); require(recipient != address(0), "ERC20: transfer to the zero address"); _beforeTokenTransfer(sender, recipient, amount); _balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance"); _balances[recipient] = _balances[recipient].add(amount); emit Transfer(sender, recipient, amount); } /** @dev Creates `amount` tokens and assigns them to `account`, increasing * the total supply. * * Emits a {Transfer} event with `from` set to the zero address. * * Requirements: * * - `to` cannot be the zero address. */ function _mint(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: mint to the zero address"); _beforeTokenTransfer(address(0), account, amount); _totalSupply = _totalSupply.add(amount); _balances[account] = _balances[account].add(amount); emit Transfer(address(0), account, amount); } /** * @dev Destroys `amount` tokens from `account`, reducing the * total supply. * * Emits a {Transfer} event with `to` set to the zero address. * * Requirements: * * - `account` cannot be the zero address. * - `account` must have at least `amount` tokens. */ function _burn(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: burn from the zero address"); _beforeTokenTransfer(account, address(0), amount); _balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance"); _totalSupply = _totalSupply.sub(amount); emit Transfer(account, address(0), amount); } /** * @dev Sets `amount` 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. */ function _approve(address owner, address spender, uint256 amount) internal virtual { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } /** * @dev Sets {decimals} to a value other than the default one of 18. * * WARNING: This function should only be called from the constructor. Most * applications that interact with token contracts will not expect * {decimals} to ever change, and may work incorrectly if it does. */ function _setupDecimals(uint8 decimals_) internal virtual { _decimals = decimals_; } /** * @dev Hook that is called before any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * will be to transferred to `to`. * - when `from` is zero, `amount` tokens will be minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { } }
// SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; /** * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612]. * * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by * presenting a message signed by the account. By not relying on `{IERC20-approve}`, the token holder account doesn't * need to send a transaction, and thus is not required to hold Ether at all. */ interface IERC20Permit { /** * @dev Sets `value` as the allowance of `spender` over `owner`'s tokens, * given `owner`'s signed approval. * * IMPORTANT: The same issues {IERC20-approve} has related to transaction * ordering also apply here. * * Emits an {Approval} event. * * Requirements: * * - `spender` cannot be the zero address. * - `deadline` must be a timestamp in the future. * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner` * over the EIP712-formatted function arguments. * - the signature must use ``owner``'s current nonce (see {nonces}). * * For more information on the signature format, see the * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP * section]. */ function permit(address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) external; /** * @dev Returns the current nonce for `owner`. This value must be * included whenever a signature is generated for {permit}. * * Every successful call to {permit} increases ``owner``'s nonce by one. This * prevents a signature from being used multiple times. */ function nonces(address owner) external view returns (uint256); /** * @dev Returns the domain separator used in the encoding of the signature for `permit`, as defined by {EIP712}. */ // solhint-disable-next-line func-name-mixedcase function DOMAIN_SEPARATOR() external view returns (bytes32); }
// SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; /** * @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations. * * These functions can be used to verify that a message was signed by the holder * of the private keys of a given address. */ library ECDSA { /** * @dev Returns the address that signed a hashed message (`hash`) with * `signature`. This address can then be used for verification purposes. * * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures: * this function rejects them by requiring the `s` value to be in the lower * half order, and the `v` value to be either 27 or 28. * * IMPORTANT: `hash` _must_ be the result of a hash operation for the * verification to be secure: it is possible to craft signatures that * recover to arbitrary addresses for non-hashed data. A safe way to ensure * this is by receiving a hash of the original message (which may otherwise * be too long), and then calling {toEthSignedMessageHash} on it. */ function recover(bytes32 hash, bytes memory signature) internal pure returns (address) { // Check the signature length if (signature.length != 65) { revert("ECDSA: invalid signature length"); } // Divide the signature in r, s and v variables bytes32 r; bytes32 s; uint8 v; // ecrecover takes the signature parameters, and the only way to get them // currently is to use assembly. // solhint-disable-next-line no-inline-assembly assembly { r := mload(add(signature, 0x20)) s := mload(add(signature, 0x40)) v := byte(0, mload(add(signature, 0x60))) } return recover(hash, v, r, s); } /** * @dev Overload of {ECDSA-recover-bytes32-bytes-} that receives the `v`, * `r` and `s` signature fields separately. */ function recover(bytes32 hash, uint8 v, bytes32 r, bytes32 s) internal pure returns (address) { // EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature // unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines // the valid range for s in (281): 0 < s < secp256k1n ÷ 2 + 1, and for v in (282): v ∈ {27, 28}. Most // signatures from current libraries generate a unique signature with an s-value in the lower half order. // // If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value // with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or // vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept // these malleable signatures as well. require(uint256(s) <= 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0, "ECDSA: invalid signature 's' value"); require(v == 27 || v == 28, "ECDSA: invalid signature 'v' value"); // If the signature is valid (and not malleable), return the signer address address signer = ecrecover(hash, v, r, s); require(signer != address(0), "ECDSA: invalid signature"); return signer; } /** * @dev Returns an Ethereum Signed Message, created from a `hash`. This * replicates the behavior of the * https://github.com/ethereum/wiki/wiki/JSON-RPC#eth_sign[`eth_sign`] * JSON-RPC method. * * See {recover}. */ function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32) { // 32 is the length in bytes of hash, // enforced by the type signature above return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", hash)); } }
// SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; import "../math/SafeMath.sol"; /** * @title Counters * @author Matt Condon (@shrugs) * @dev Provides counters that can only be incremented or decremented by one. 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;` * Since it is not possible to overflow a 256 bit integer with increments of one, `increment` can skip the {SafeMath} * overflow check, thereby saving gas. This does assume however correct usage, in that the underlying `_value` is never * directly accessed. */ library Counters { using SafeMath for uint256; 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 { // The {SafeMath} overflow check can be skipped here, see the comment at the top counter._value += 1; } function decrement(Counter storage counter) internal { counter._value = counter._value.sub(1); } }
// SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; /** * @dev https://eips.ethereum.org/EIPS/eip-712[EIP 712] is a standard for hashing and signing of typed structured data. * * The encoding specified in the EIP is very generic, and such a generic implementation in Solidity is not feasible, * thus this contract does not implement the encoding itself. Protocols need to implement the type-specific encoding * they need in their contracts using a combination of `abi.encode` and `keccak256`. * * This contract implements the EIP 712 domain separator ({_domainSeparatorV4}) that is used as part of the encoding * scheme, and the final step of the encoding to obtain the message digest that is then signed via ECDSA * ({_hashTypedDataV4}). * * The implementation of the domain separator was designed to be as efficient as possible while still properly updating * the chain id to protect against replay attacks on an eventual fork of the chain. * * NOTE: This contract implements the version of the encoding known as "v4", as implemented by the JSON RPC method * https://docs.metamask.io/guide/signing-data.html[`eth_signTypedDataV4` in MetaMask]. * * _Available since v3.4._ */ abstract contract EIP712 { /* solhint-disable var-name-mixedcase */ // Cache the domain separator as an immutable value, but also store the chain id that it corresponds to, in order to // invalidate the cached domain separator if the chain id changes. bytes32 private immutable _CACHED_DOMAIN_SEPARATOR; uint256 private immutable _CACHED_CHAIN_ID; bytes32 private immutable _HASHED_NAME; bytes32 private immutable _HASHED_VERSION; bytes32 private immutable _TYPE_HASH; /* solhint-enable var-name-mixedcase */ /** * @dev Initializes the domain separator and parameter caches. * * The meaning of `name` and `version` is specified in * https://eips.ethereum.org/EIPS/eip-712#definition-of-domainseparator[EIP 712]: * * - `name`: the user readable name of the signing domain, i.e. the name of the DApp or the protocol. * - `version`: the current major version of the signing domain. * * NOTE: These parameters cannot be changed except through a xref:learn::upgrading-smart-contracts.adoc[smart * contract upgrade]. */ constructor(string memory name, string memory version) internal { bytes32 hashedName = keccak256(bytes(name)); bytes32 hashedVersion = keccak256(bytes(version)); bytes32 typeHash = keccak256("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)"); _HASHED_NAME = hashedName; _HASHED_VERSION = hashedVersion; _CACHED_CHAIN_ID = _getChainId(); _CACHED_DOMAIN_SEPARATOR = _buildDomainSeparator(typeHash, hashedName, hashedVersion); _TYPE_HASH = typeHash; } /** * @dev Returns the domain separator for the current chain. */ function _domainSeparatorV4() internal view virtual returns (bytes32) { if (_getChainId() == _CACHED_CHAIN_ID) { return _CACHED_DOMAIN_SEPARATOR; } else { return _buildDomainSeparator(_TYPE_HASH, _HASHED_NAME, _HASHED_VERSION); } } function _buildDomainSeparator(bytes32 typeHash, bytes32 name, bytes32 version) private view returns (bytes32) { return keccak256( abi.encode( typeHash, name, version, _getChainId(), address(this) ) ); } /** * @dev Given an already https://eips.ethereum.org/EIPS/eip-712#definition-of-hashstruct[hashed struct], this * function returns the hash of the fully encoded EIP712 message for this domain. * * This hash can be used together with {ECDSA-recover} to obtain the signer of a message. For example: * * ```solidity * bytes32 digest = _hashTypedDataV4(keccak256(abi.encode( * keccak256("Mail(address to,string contents)"), * mailTo, * keccak256(bytes(mailContents)) * ))); * address signer = ECDSA.recover(digest, signature); * ``` */ function _hashTypedDataV4(bytes32 structHash) internal view virtual returns (bytes32) { return keccak256(abi.encodePacked("\x19\x01", _domainSeparatorV4(), structHash)); } function _getChainId() private view returns (uint256 chainId) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 // solhint-disable-next-line no-inline-assembly assembly { chainId := chainid() } } }
// SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; /* * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with GSN 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 payable) { return msg.sender; } function _msgData() internal view virtual returns (bytes memory) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } }
// SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address recipient, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); /** * @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); }
// SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; /** * @dev Wrappers over Solidity's arithmetic operations with added overflow * checks. * * Arithmetic operations in Solidity wrap on overflow. This can easily result * in bugs, because programmers usually assume that an overflow raises an * error, which is the standard behavior in high level programming languages. * `SafeMath` restores this intuition by reverting the transaction when an * operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. */ 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) { 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) { 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) { // 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) { 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) { 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) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /** * @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) { require(b <= a, "SafeMath: subtraction overflow"); 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) { if (a == 0) return 0; uint256 c = a * b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @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. 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) internal pure returns (uint256) { require(b > 0, "SafeMath: division by zero"); 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) { require(b > 0, "SafeMath: modulo by zero"); 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) { 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. * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {tryDiv}. * * 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) { 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) { require(b > 0, errorMessage); return a % b; } }
// SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; import "../math/Math.sol"; /** * @dev Collection of functions related to array types. */ library Arrays { /** * @dev Searches a sorted `array` and returns the first index that contains * a value greater or equal to `element`. If no such index exists (i.e. all * values in the array are strictly less than `element`), the array length is * returned. Time complexity O(log n). * * `array` is expected to be sorted in ascending order, and to contain no * repeated elements. */ function findUpperBound(uint256[] storage array, uint256 element) internal view returns (uint256) { if (array.length == 0) { return 0; } uint256 low = 0; uint256 high = array.length; while (low < high) { uint256 mid = Math.average(low, high); // Note that mid will always be strictly less than high (i.e. it will be a valid array index) // because Math.average rounds down (it does integer division with truncation). if (array[mid] > element) { high = mid; } else { low = mid + 1; } } // At this point `low` is the exclusive upper bound. We will return the inclusive upper bound. if (low > 0 && array[low - 1] == element) { return low - 1; } else { return low; } } }
// SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; /** * @dev Standard math utilities missing in the Solidity language. */ library Math { /** * @dev Returns the largest of two numbers. */ function max(uint256 a, uint256 b) internal pure returns (uint256) { return a >= b ? a : b; } /** * @dev Returns the smallest of two numbers. */ function min(uint256 a, uint256 b) internal pure returns (uint256) { return a < b ? a : b; } /** * @dev Returns the average of two numbers. The result is rounded towards * zero. */ function average(uint256 a, uint256 b) internal pure returns (uint256) { // (a + b) / 2 can overflow, so we distribute return (a / 2) + (b / 2) + ((a % 2 + b % 2) / 2); } }
{ "optimizer": { "enabled": true, "runs": 800 }, "metadata": { "bytecodeHash": "none" }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } }, "libraries": {} }
Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
[{"inputs":[{"internalType":"string","name":"name","type":"string"},{"internalType":"string","name":"symbol","type":"string"},{"internalType":"uint8","name":"decimals","type":"uint8"}],"stateMutability":"nonpayable","type":"constructor"},{"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":false,"internalType":"uint256","name":"id","type":"uint256"}],"name":"Snapshot","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"},{"inputs":[],"name":"DOMAIN_SEPARATOR","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"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":"amount","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":[{"internalType":"address","name":"account","type":"address"},{"internalType":"uint256","name":"snapshotId","type":"uint256"}],"name":"balanceOfAt","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"decimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"subtractedValue","type":"uint256"}],"name":"decreaseAllowance","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"addedValue","type":"uint256"}],"name":"increaseAllowance","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"nonces","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"},{"internalType":"uint256","name":"deadline","type":"uint256"},{"internalType":"uint8","name":"v","type":"uint8"},{"internalType":"bytes32","name":"r","type":"bytes32"},{"internalType":"bytes32","name":"s","type":"bytes32"}],"name":"permit","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"snapshot","outputs":[],"stateMutability":"nonpayable","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":"uint256","name":"snapshotId","type":"uint256"}],"name":"totalSupplyAt","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"sender","type":"address"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"}]
Contract Creation Code
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
Deployed Bytecode
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
Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
000000000000000000000000000000000000000000000000000000000000006000000000000000000000000000000000000000000000000000000000000000a00000000000000000000000000000000000000000000000000000000000000012000000000000000000000000000000000000000000000000000000000000000547616d6d61000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000547414d4d41000000000000000000000000000000000000000000000000000000
-----Decoded View---------------
Arg [0] : name (string): Gamma
Arg [1] : symbol (string): GAMMA
Arg [2] : decimals (uint8): 18
-----Encoded View---------------
7 Constructor Arguments found :
Arg [0] : 0000000000000000000000000000000000000000000000000000000000000060
Arg [1] : 00000000000000000000000000000000000000000000000000000000000000a0
Arg [2] : 0000000000000000000000000000000000000000000000000000000000000012
Arg [3] : 0000000000000000000000000000000000000000000000000000000000000005
Arg [4] : 47616d6d61000000000000000000000000000000000000000000000000000000
Arg [5] : 0000000000000000000000000000000000000000000000000000000000000005
Arg [6] : 47414d4d41000000000000000000000000000000000000000000000000000000
Loading...
Loading
Loading...
Loading
[ Download: CSV Export ]
[ Download: CSV Export ]
A token is a representation of an on-chain or off-chain asset. The token page shows information such as price, total supply, holders, transfers and social links. Learn more about this page in our Knowledge Base.