ERC-20
Overview
Max Total Supply
200,001,000 YFX
Holders
46
Market
Onchain Market Cap
$0.00
Circulating Supply Market Cap
-
Other Info
Token Contract (WITH 18 Decimals)
Balance
87,909,206.332157294908705224 YFXValue
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# | Exchange | Pair | Price | 24H Volume | % Volume |
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Contract Source Code Verified (Exact Match)
Contract Name:
Vyper_contract
Compiler Version
vyper:0.2.4
Contract Source Code (Vyper language format)
""" YFX ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ https://yfx.fund/ YFXXT is an adverserial trading system for producing profits based on the actions of YFI, and other highly predictable smart contract auto-trading/staking systems. YYYYYYY YYYYYYYFFFFFFFFFFFFFFFFFFFFFFXXXXXXX XXXXXXX Y:::::Y Y:::::YF::::::::::::::::::::FX:::::X X:::::X Y:::::Y Y:::::YF::::::::::::::::::::FX:::::X X:::::X Y::::::Y Y::::::YFF::::::FFFFFFFFF::::FX::::::X X::::::X YYY:::::Y Y:::::YYY F:::::F FFFFFFIXX:::::X X:::::XXI Y:::::Y Y:::::Y F:::::F X:::::X X:::::X Y:::::Y:::::Y F::::::FFFFFFFFFF X:::::X:::::X Y:::::::::Y F:::::::::::::::F X:::::::::X Y:::::::Y F:::::::::::::::F X:::::::::X Y:::::Y F::::::FFFFFFFFFF X:::::X:::::X Y:::::Y F:::::F X:::::X X:::::X Y:::::Y F:::::F (XX:::::X X:::::XX) Y:::::Y FF:::::::FF X::::::X X::::::X YYYY:::::YYYY F::::::::FF X:::::X X:::::X Y:::::::::::Y F::::::::FF X:::::X X:::::X YYYYYYYYYYYYY FFFFFFFFFFF XXXXXXX XXXXXXX """ from vyper.interfaces import ERC20 implements: ERC20 event Transfer: sender: indexed(address) receiver: indexed(address) value: uint256 event Approval: owner: indexed(address) spender: indexed(address) value: uint256 name: public(String[64]) symbol: public(String[32]) decimals: public(uint256) # NOTE: By declaring `balanceOf` as public, vyper automatically generates a 'balanceOf()' getter # method to allow access to account balances. # The _KeyType will become a required parameter for the getter and it will return _ValueType. # See: https://vyper.readthedocs.io/en/v0.1.0-beta.8/types.html?highlight=getter#mappings balanceOf: public(HashMap[address, uint256]) allowances: HashMap[address, HashMap[address, uint256]] total_supply: uint256 minter: address @external def __init__(): init_supply: uint256 = 1000 * 10 ** 18 self.name = "YFX" self.symbol = "YFX" self.decimals = 18 self.balanceOf[msg.sender] = init_supply self.total_supply = init_supply self.minter = msg.sender log Transfer(ZERO_ADDRESS, msg.sender, init_supply) @view @external def totalSupply() -> uint256: """ @dev Total number of tokens in existence. """ return self.total_supply @view @external def allowance(_owner : address, _spender : address) -> uint256: """ @dev Function to check the amount of tokens that an owner allowed to a spender. @param _owner The address which owns the funds. @param _spender The address which will spend the funds. @return An uint256 specifying the amount of tokens still available for the spender. """ return self.allowances[_owner][_spender] @external def transfer(_to : address, _value : uint256) -> bool: """ @dev Transfer token for a specified address @param _to The address to transfer to. @param _value The amount to be transferred. """ # NOTE: vyper does not allow underflows # so the following subtraction would revert on insufficient balance self.balanceOf[msg.sender] -= _value self.balanceOf[_to] += _value log Transfer(msg.sender, _to, _value) return True @external def transferFrom(_from : address, _to : address, _value : uint256) -> bool: """ @dev Transfer tokens from one address to another. @param _from address The address which you want to send tokens from @param _to address The address which you want to transfer to @param _value uint256 the amount of tokens to be transferred """ # NOTE: vyper does not allow underflows # so the following subtraction would revert on insufficient balance self.balanceOf[_from] -= _value self.balanceOf[_to] += _value # NOTE: vyper does not allow underflows # so the following subtraction would revert on insufficient allowance self.allowances[_from][msg.sender] -= _value log Transfer(_from, _to, _value) return True @external def approve(_spender : address, _value : uint256) -> bool: """ @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender. 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 @param _spender The address which will spend the funds. @param _value The amount of tokens to be spent. """ self.allowances[msg.sender][_spender] = _value log Approval(msg.sender, _spender, _value) return True @external def setMinter(_newMinter: address): """ @dev Change the minter of tokens - useful for the farming contract. @param _newMinter The account of the new minter """ assert msg.sender == self.minter self.minter = _newMinter @external def burnMintingKeys(): """ @dev Forever burn the keys to the minting capability, permanently locking the total supply """ assert msg.sender == self.minter self.minter = ZERO_ADDRESS @external def mint(_to: address, _value: uint256): """ @dev Mint an amount of the token and assigns it to an account. This encapsulates the modification of balances such that the proper events are emitted. @param _to The account that will receive the created tokens. @param _value The amount that will be created. """ assert msg.sender == self.minter assert _to != ZERO_ADDRESS self.total_supply += _value self.balanceOf[_to] += _value log Transfer(ZERO_ADDRESS, _to, _value) @internal def _burn(_to: address, _value: uint256): """ @dev Internal function that burns an amount of the token of a given account. @param _to The account whose tokens will be burned. @param _value The amount that will be burned. """ assert _to != ZERO_ADDRESS self.total_supply -= _value self.balanceOf[_to] -= _value log Transfer(_to, ZERO_ADDRESS, _value) @external def burn(_value: uint256): """ @dev Burn an amount of the token of msg.sender. @param _value The amount that will be burned. """ self._burn(msg.sender, _value) @external def burnFrom(_to: address, _value: uint256): """ @dev Burn an amount of the token from a given account. @param _to The account whose tokens will be burned. @param _value The amount that will be burned. """ self.allowances[_to][msg.sender] -= _value self._burn(_to, _value)
Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
[{"name":"Transfer","inputs":[{"type":"address","name":"sender","indexed":true},{"type":"address","name":"receiver","indexed":true},{"type":"uint256","name":"value","indexed":false}],"anonymous":false,"type":"event"},{"name":"Approval","inputs":[{"type":"address","name":"owner","indexed":true},{"type":"address","name":"spender","indexed":true},{"type":"uint256","name":"value","indexed":false}],"anonymous":false,"type":"event"},{"outputs":[],"inputs":[],"stateMutability":"nonpayable","type":"constructor"},{"name":"totalSupply","outputs":[{"type":"uint256","name":""}],"inputs":[],"stateMutability":"view","type":"function","gas":1151},{"name":"allowance","outputs":[{"type":"uint256","name":""}],"inputs":[{"type":"address","name":"_owner"},{"type":"address","name":"_spender"}],"stateMutability":"view","type":"function","gas":1489},{"name":"transfer","outputs":[{"type":"bool","name":""}],"inputs":[{"type":"address","name":"_to"},{"type":"uint256","name":"_value"}],"stateMutability":"nonpayable","type":"function","gas":74772},{"name":"transferFrom","outputs":[{"type":"bool","name":""}],"inputs":[{"type":"address","name":"_from"},{"type":"address","name":"_to"},{"type":"uint256","name":"_value"}],"stateMutability":"nonpayable","type":"function","gas":111066},{"name":"approve","outputs":[{"type":"bool","name":""}],"inputs":[{"type":"address","name":"_spender"},{"type":"uint256","name":"_value"}],"stateMutability":"nonpayable","type":"function","gas":37853},{"name":"setMinter","outputs":[],"inputs":[{"type":"address","name":"_newMinter"}],"stateMutability":"nonpayable","type":"function","gas":36397},{"name":"burnMintingKeys","outputs":[],"inputs":[],"stateMutability":"nonpayable","type":"function","gas":21385},{"name":"mint","outputs":[],"inputs":[{"type":"address","name":"_to"},{"type":"uint256","name":"_value"}],"stateMutability":"nonpayable","type":"function","gas":75763},{"name":"burn","outputs":[],"inputs":[{"type":"uint256","name":"_value"}],"stateMutability":"nonpayable","type":"function","gas":75653},{"name":"burnFrom","outputs":[],"inputs":[{"type":"address","name":"_to"},{"type":"uint256","name":"_value"}],"stateMutability":"nonpayable","type":"function","gas":111943},{"name":"name","outputs":[{"type":"string","name":""}],"inputs":[],"stateMutability":"view","type":"function","gas":7883},{"name":"symbol","outputs":[{"type":"string","name":""}],"inputs":[],"stateMutability":"view","type":"function","gas":6936},{"name":"decimals","outputs":[{"type":"uint256","name":""}],"inputs":[],"stateMutability":"view","type":"function","gas":1541},{"name":"balanceOf","outputs":[{"type":"uint256","name":""}],"inputs":[{"type":"address","name":"arg0"}],"stateMutability":"view","type":"function","gas":1725}]
Contract Creation Code
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Deployed Bytecode
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