Overview
Max Total Supply
26,907,297.322570203504 WOOFY
Holders
2,901 (0.00%)
Market
Onchain Market Cap
$0.00
Circulating Supply Market Cap
-
Other Info
Token Contract (WITH 12 Decimals)
Balance
1,500.000001835121 WOOFYValue
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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:0.2.12
Contract Source Code (Vyper language format)
# @version 0.2.12 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 allowance: public(HashMap[address, HashMap[address, uint256]]) balanceOf: public(HashMap[address, uint256]) totalSupply: public(uint256) nonces: public(HashMap[address, uint256]) DOMAIN_SEPARATOR: public(bytes32) DOMAIN_TYPE_HASH: constant(bytes32) = keccak256('EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)') PERMIT_TYPE_HASH: constant(bytes32) = keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)") YFI: constant(address) = 0x0bc529c00C6401aEF6D220BE8C6Ea1667F6Ad93e @external def __init__(): self.DOMAIN_SEPARATOR = keccak256( concat( DOMAIN_TYPE_HASH, keccak256(convert("Woofy", Bytes[5])), keccak256(convert("1", Bytes[1])), convert(chain.id, bytes32), convert(self, bytes32) ) ) @view @external def name() -> String[5]: return "Woofy" @view @external def symbol() -> String[5]: return "WOOFY" @view @external def decimals() -> uint256: return 12 @internal def _mint(receiver: address, amount: uint256): assert not receiver in [self, ZERO_ADDRESS] self.balanceOf[receiver] += amount self.totalSupply += amount log Transfer(ZERO_ADDRESS, receiver, amount) @internal def _burn(sender: address, amount: uint256): self.balanceOf[sender] -= amount self.totalSupply -= amount log Transfer(sender, ZERO_ADDRESS, amount) @internal def _transfer(sender: address, receiver: address, amount: uint256): assert not receiver in [self, ZERO_ADDRESS] self.balanceOf[sender] -= amount self.balanceOf[receiver] += amount log Transfer(sender, receiver, amount) @external def transfer(receiver: address, amount: uint256) -> bool: self._transfer(msg.sender, receiver, amount) return True @external def transferFrom(sender: address, receiver: address, amount: uint256) -> bool: self.allowance[sender][msg.sender] -= amount self._transfer(sender, receiver, amount) return True @external def approve(spender: address, amount: uint256) -> bool: self.allowance[msg.sender][spender] = amount log Approval(msg.sender, spender, amount) return True @external def woof(amount: uint256 = MAX_UINT256, receiver: address = msg.sender) -> bool: mint_amount: uint256 = min(amount, ERC20(YFI).balanceOf(msg.sender)) assert ERC20(YFI).transferFrom(msg.sender, self, mint_amount) self._mint(receiver, mint_amount) return True @external def unwoof(amount: uint256 = MAX_UINT256, receiver: address = msg.sender) -> bool: burn_amount: uint256 = min(amount, self.balanceOf[msg.sender]) self._burn(msg.sender, burn_amount) assert ERC20(YFI).transfer(receiver, burn_amount) return True @external def permit(owner: address, spender: address, amount: uint256, expiry: uint256, signature: Bytes[65]) -> bool: assert owner != ZERO_ADDRESS # dev: invalid owner assert expiry == 0 or expiry >= block.timestamp # dev: permit expired nonce: uint256 = self.nonces[owner] digest: bytes32 = keccak256( concat( b'\x19\x01', self.DOMAIN_SEPARATOR, keccak256( concat( PERMIT_TYPE_HASH, convert(owner, bytes32), convert(spender, bytes32), convert(amount, bytes32), convert(nonce, bytes32), convert(expiry, bytes32), ) ) ) ) # NOTE: signature is packed as r, s, v r: uint256 = convert(slice(signature, 0, 32), uint256) s: uint256 = convert(slice(signature, 32, 32), uint256) v: uint256 = convert(slice(signature, 64, 1), uint256) assert ecrecover(digest, v, r, s) == owner # dev: invalid signature self.allowance[owner][spender] = amount self.nonces[owner] = nonce + 1 log Approval(owner, spender, amount) return True
Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
[{"name":"Transfer","inputs":[{"name":"sender","type":"address","indexed":true},{"name":"receiver","type":"address","indexed":true},{"name":"value","type":"uint256","indexed":false}],"anonymous":false,"type":"event"},{"name":"Approval","inputs":[{"name":"owner","type":"address","indexed":true},{"name":"spender","type":"address","indexed":true},{"name":"value","type":"uint256","indexed":false}],"anonymous":false,"type":"event"},{"stateMutability":"nonpayable","type":"constructor","inputs":[],"outputs":[]},{"stateMutability":"view","type":"function","name":"name","inputs":[],"outputs":[{"name":"","type":"string"}],"gas":5916},{"stateMutability":"view","type":"function","name":"symbol","inputs":[],"outputs":[{"name":"","type":"string"}],"gas":5946},{"stateMutability":"view","type":"function","name":"decimals","inputs":[],"outputs":[{"name":"","type":"uint256"}],"gas":348},{"stateMutability":"nonpayable","type":"function","name":"transfer","inputs":[{"name":"receiver","type":"address"},{"name":"amount","type":"uint256"}],"outputs":[{"name":"","type":"bool"}],"gas":78588},{"stateMutability":"nonpayable","type":"function","name":"transferFrom","inputs":[{"name":"sender","type":"address"},{"name":"receiver","type":"address"},{"name":"amount","type":"uint256"}],"outputs":[{"name":"","type":"bool"}],"gas":116239},{"stateMutability":"nonpayable","type":"function","name":"approve","inputs":[{"name":"spender","type":"address"},{"name":"amount","type":"uint256"}],"outputs":[{"name":"","type":"bool"}],"gas":37881},{"stateMutability":"nonpayable","type":"function","name":"woof","inputs":[],"outputs":[{"name":"","type":"bool"}]},{"stateMutability":"nonpayable","type":"function","name":"woof","inputs":[{"name":"amount","type":"uint256"}],"outputs":[{"name":"","type":"bool"}]},{"stateMutability":"nonpayable","type":"function","name":"woof","inputs":[{"name":"amount","type":"uint256"},{"name":"receiver","type":"address"}],"outputs":[{"name":"","type":"bool"}]},{"stateMutability":"nonpayable","type":"function","name":"unwoof","inputs":[],"outputs":[{"name":"","type":"bool"}]},{"stateMutability":"nonpayable","type":"function","name":"unwoof","inputs":[{"name":"amount","type":"uint256"}],"outputs":[{"name":"","type":"bool"}]},{"stateMutability":"nonpayable","type":"function","name":"unwoof","inputs":[{"name":"amount","type":"uint256"},{"name":"receiver","type":"address"}],"outputs":[{"name":"","type":"bool"}]},{"stateMutability":"nonpayable","type":"function","name":"permit","inputs":[{"name":"owner","type":"address"},{"name":"spender","type":"address"},{"name":"amount","type":"uint256"},{"name":"expiry","type":"uint256"},{"name":"signature","type":"bytes"}],"outputs":[{"name":"","type":"bool"}],"gas":91134},{"stateMutability":"view","type":"function","name":"allowance","inputs":[{"name":"arg0","type":"address"},{"name":"arg1","type":"address"}],"outputs":[{"name":"","type":"uint256"}],"gas":3088},{"stateMutability":"view","type":"function","name":"balanceOf","inputs":[{"name":"arg0","type":"address"}],"outputs":[{"name":"","type":"uint256"}],"gas":2903},{"stateMutability":"view","type":"function","name":"totalSupply","inputs":[],"outputs":[{"name":"","type":"uint256"}],"gas":2718},{"stateMutability":"view","type":"function","name":"nonces","inputs":[{"name":"arg0","type":"address"}],"outputs":[{"name":"","type":"uint256"}],"gas":2963},{"stateMutability":"view","type":"function","name":"DOMAIN_SEPARATOR","inputs":[],"outputs":[{"name":"","type":"bytes32"}],"gas":2778}]
Contract Creation Code
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Deployed Bytecode
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