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ERC-20
Loans
Overview
Max Total Supply
1,018,892,666.327790687645873089 DUCK
Holders
3,041 (0.00%)
Market
Price
$0.00 @ 0.000000 ETH (+12.35%)
Onchain Market Cap
$431,521.42
Circulating Supply Market Cap
$181,046.00
Other Info
Token Contract (WITH 18 Decimals)
Balance
5,077.366569488349957268 DUCKValue
$2.15 ( ~0.000852400517311874 Eth) [0.0005%]Loading...
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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:0.2.8
Contract Source Code (Vyper language format)
# @version 0.2.8 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) balanceOf: public(HashMap[address, uint256]) allowances: HashMap[address, HashMap[address, uint256]] totalSupply: public(uint256) COL: constant(address) = 0xC76FB75950536d98FA62ea968E1D6B45ffea2A55 DEAD: constant(address) = 0x000000000000000000000000000000000000dEaD RATIO: constant(uint256) = 100 # 1 DUCK equals 100 COL @external def __init__(): self.name = 'Unit Protocol' self.symbol = 'DUCK' self.decimals = 18 @external def quack(): """ Migrate and burn COL for DUCK. Quack quack. """ cols: uint256 = ERC20(COL).balanceOf(msg.sender) ducks: uint256 = cols / RATIO assert ERC20(COL).transferFrom(msg.sender, DEAD, cols) # dev: not approved self.totalSupply += ducks self.balanceOf[msg.sender] += ducks log Transfer(ZERO_ADDRESS, msg.sender, ducks) @view @external def allowance(owner: address, spender: address) -> uint256: return self.allowances[owner][spender] @external def transfer(receiver: address, amount: uint256) -> bool: assert receiver not in [self, ZERO_ADDRESS] self.balanceOf[msg.sender] -= amount self.balanceOf[receiver] += amount log Transfer(msg.sender, receiver, amount) return True @external def transferFrom(owner: address, receiver: address, amount: uint256) -> bool: assert receiver not in [self, ZERO_ADDRESS] self.balanceOf[owner] -= amount self.balanceOf[receiver] += amount if owner != msg.sender and self.allowances[owner][msg.sender] != MAX_UINT256: self.allowances[owner][msg.sender] -= amount log Approval(owner, msg.sender, self.allowances[owner][msg.sender]) log Transfer(owner, receiver, amount) return True @external def approve(spender: address, amount: uint256) -> bool: self.allowances[msg.sender][spender] = amount log Approval(msg.sender, spender, amount) return True @external def burn(amount: uint256): self.totalSupply -= amount self.balanceOf[msg.sender] -= amount log Transfer(msg.sender, ZERO_ADDRESS, amount)
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":"quack","outputs":[],"inputs":[],"stateMutability":"nonpayable","type":"function","gas":75951},{"name":"allowance","outputs":[{"type":"uint256","name":""}],"inputs":[{"type":"address","name":"owner"},{"type":"address","name":"spender"}],"stateMutability":"view","type":"function","gas":1521},{"name":"transfer","outputs":[{"type":"bool","name":""}],"inputs":[{"type":"address","name":"receiver"},{"type":"uint256","name":"amount"}],"stateMutability":"nonpayable","type":"function","gas":75264},{"name":"transferFrom","outputs":[{"type":"bool","name":""}],"inputs":[{"type":"address","name":"owner"},{"type":"address","name":"receiver"},{"type":"uint256","name":"amount"}],"stateMutability":"nonpayable","type":"function","gas":115850},{"name":"approve","outputs":[{"type":"bool","name":""}],"inputs":[{"type":"address","name":"spender"},{"type":"uint256","name":"amount"}],"stateMutability":"nonpayable","type":"function","gas":37824},{"name":"burn","outputs":[],"inputs":[{"type":"uint256","name":"amount"}],"stateMutability":"nonpayable","type":"function","gas":74564},{"name":"name","outputs":[{"type":"string","name":""}],"inputs":[],"stateMutability":"view","type":"function","gas":7643},{"name":"symbol","outputs":[{"type":"string","name":""}],"inputs":[],"stateMutability":"view","type":"function","gas":6696},{"name":"decimals","outputs":[{"type":"uint256","name":""}],"inputs":[],"stateMutability":"view","type":"function","gas":1301},{"name":"balanceOf","outputs":[{"type":"uint256","name":""}],"inputs":[{"type":"address","name":"arg0"}],"stateMutability":"view","type":"function","gas":1546},{"name":"totalSupply","outputs":[{"type":"uint256","name":""}],"inputs":[],"stateMutability":"view","type":"function","gas":1361}]
Contract Creation Code
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Deployed Bytecode
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