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Overview
MATIC Balance
0 MATIC
MATIC Value
$0.00More Info
Private Name Tags
ContractCreator:
TokenTracker
Sponsored
Latest 1 from a total of 1 transactions
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0x60806108 | 17332122 | 975 days ago | IN | Contract Creation | 0 MATIC | 0.00120387 |
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Similar Match Source Code This contract matches the deployed Bytecode of the Source Code for Contract 0xEC26Bf7c...EA5948E8D The constructor portion of the code might be different and could alter the actual behaviour of the contract
Contract Name:
Vyper_contract
Compiler Version
vyper:0.2.8
Contract Source Code (Vyper language format)
# # # "Have I gone mad?" # - Alice # # # "I'm afraid so, but let me tell you something, the best people usually are." # - Mad Hatter # # # "We're all mad here. I'm mad. You're mad." # - Cheshire Cat # # # Madcoin (MAD) Contract # # # madcoin.eth (0x57956F2ab04Db1F743abe332d38bEeD9C7546Ef5) # https://madcoin.io # # # For creators who are mad enough to create, you are MAD!! # # # @dev Implementation of ERC-20 token standard. # @author Takayuki Jimba (@yudetamago) # https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20.md 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]) # By declaring `allowance` as public, vyper automatically generates the `allowance()` getter allowance: public(HashMap[address, HashMap[address, uint256]]) # By declaring `totalSupply` as public, we automatically create the `totalSupply()` getter totalSupply: public(uint256) minter: address @external def __init__(_name: String[64], _symbol: String[32], _decimals: uint256, _supply: uint256): init_supply: uint256 = _supply * 10 ** _decimals self.name = _name self.symbol = _symbol self.decimals = _decimals self.balanceOf[msg.sender] = init_supply self.totalSupply = init_supply self.minter = msg.sender log Transfer(ZERO_ADDRESS, msg.sender, init_supply) @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.allowance[_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.allowance[msg.sender][_spender] = _value log Approval(msg.sender, _spender, _value) return True @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.totalSupply += _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.totalSupply -= _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.allowance[_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":[{"type":"string","name":"_name"},{"type":"string","name":"_symbol"},{"type":"uint256","name":"_decimals"},{"type":"uint256","name":"_supply"}],"stateMutability":"nonpayable","type":"constructor"},{"name":"transfer","outputs":[{"type":"bool","name":""}],"inputs":[{"type":"address","name":"_to"},{"type":"uint256","name":"_value"}],"stateMutability":"nonpayable","type":"function","gas":74683},{"name":"transferFrom","outputs":[{"type":"bool","name":""}],"inputs":[{"type":"address","name":"_from"},{"type":"address","name":"_to"},{"type":"uint256","name":"_value"}],"stateMutability":"nonpayable","type":"function","gas":111038},{"name":"approve","outputs":[{"type":"bool","name":""}],"inputs":[{"type":"address","name":"_spender"},{"type":"uint256","name":"_value"}],"stateMutability":"nonpayable","type":"function","gas":37764},{"name":"mint","outputs":[],"inputs":[{"type":"address","name":"_to"},{"type":"uint256","name":"_value"}],"stateMutability":"nonpayable","type":"function","gas":75614},{"name":"burn","outputs":[],"inputs":[{"type":"uint256","name":"_value"}],"stateMutability":"nonpayable","type":"function","gas":75323},{"name":"burnFrom","outputs":[],"inputs":[{"type":"address","name":"_to"},{"type":"uint256","name":"_value"}],"stateMutability":"nonpayable","type":"function","gas":111674},{"name":"name","outputs":[{"type":"string","name":""}],"inputs":[],"stateMutability":"view","type":"function","gas":7673},{"name":"symbol","outputs":[{"type":"string","name":""}],"inputs":[],"stateMutability":"view","type":"function","gas":6726},{"name":"decimals","outputs":[{"type":"uint256","name":""}],"inputs":[],"stateMutability":"view","type":"function","gas":1331},{"name":"balanceOf","outputs":[{"type":"uint256","name":""}],"inputs":[{"type":"address","name":"arg0"}],"stateMutability":"view","type":"function","gas":1576},{"name":"allowance","outputs":[{"type":"uint256","name":""}],"inputs":[{"type":"address","name":"arg0"},{"type":"address","name":"arg1"}],"stateMutability":"view","type":"function","gas":1821},{"name":"totalSupply","outputs":[{"type":"uint256","name":""}],"inputs":[],"stateMutability":"view","type":"function","gas":1421}]
Deployed Bytecode
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