Contract Source Code (Vyper language format)

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# ERC20 implementation adapted from https://github.com/ethereum/vyper/blob/master/examples/tokens/ERC20.vy

Transfer: event({_from: indexed(address), _to: indexed(address), _value: uint256})
Approval: event({_owner: indexed(address), _spender: indexed(address), _value: uint256})

name: public(string[32])
symbol: public(string[32])
decimals: public(uint256)
totalSupply: public(uint256)
balanceOf: public(map(address, uint256))
allowances: map(address, map(address, uint256))


@public
def __init__():
    _supply: uint256 = 500*10**18
    self.name = 'Unisocks Edition 0'
    self.symbol = 'SOCKS'
    self.decimals = 18
    self.balanceOf[msg.sender] = _supply
    self.totalSupply = _supply
    log.Transfer(ZERO_ADDRESS, msg.sender, _supply)


@public
@constant
def allowance(_owner : address, _spender : address) -> uint256:
    return self.allowances[_owner][_spender]


@public
def transfer(_to : address, _value : uint256) -> bool:
    self.balanceOf[msg.sender] -= _value
    self.balanceOf[_to] += _value
    log.Transfer(msg.sender, _to, _value)
    return True


@public
def transferFrom(_from : address, _to : address, _value : uint256) -> bool:
    self.balanceOf[_from] -= _value
    self.balanceOf[_to] += _value
    if self.allowances[_from][msg.sender] < MAX_UINT256:
        self.allowances[_from][msg.sender] -= _value
    log.Transfer(_from, _to, _value)
    return True


@public
def approve(_spender : address, _value : uint256) -> bool:
    self.allowances[msg.sender][_spender] = _value
    log.Approval(msg.sender, _spender, _value)
    return True


@public
def burn(_value: uint256) -> bool:
    self.totalSupply -= _value
    self.balanceOf[msg.sender] -= _value
    log.Transfer(msg.sender, ZERO_ADDRESS, _value)
    return True


@public
def burnFrom(_from: address, _value: uint256) -> bool:
    if self.allowances[_from][msg.sender] < MAX_UINT256:
        self.allowances[_from][msg.sender] -= _value
    self.totalSupply -= _value
    self.balanceOf[_from] -= _value
    log.Transfer(_from, ZERO_ADDRESS, _value)
    return True

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[{"name":"Transfer","inputs":[{"type":"address","name":"_from","indexed":true},{"type":"address","name":"_to","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":[],"constant":false,"payable":false,"type":"constructor"},{"name":"allowance","outputs":[{"type":"uint256","name":"out"}],"inputs":[{"type":"address","name":"_owner"},{"type":"address","name":"_spender"}],"constant":true,"payable":false,"type":"function","gas":815},{"name":"transfer","outputs":[{"type":"bool","name":"out"}],"inputs":[{"type":"address","name":"_to"},{"type":"uint256","name":"_value"}],"constant":false,"payable":false,"type":"function","gas":74044},{"name":"transferFrom","outputs":[{"type":"bool","name":"out"}],"inputs":[{"type":"address","name":"_from"},{"type":"address","name":"_to"},{"type":"uint256","name":"_value"}],"constant":false,"payable":false,"type":"function","gas":110401},{"name":"approve","outputs":[{"type":"bool","name":"out"}],"inputs":[{"type":"address","name":"_spender"},{"type":"uint256","name":"_value"}],"constant":false,"payable":false,"type":"function","gas":37779},{"name":"burn","outputs":[{"type":"bool","name":"out"}],"inputs":[{"type":"uint256","name":"_value"}],"constant":false,"payable":false,"type":"function","gas":73765},{"name":"burnFrom","outputs":[{"type":"bool","name":"out"}],"inputs":[{"type":"address","name":"_from"},{"type":"uint256","name":"_value"}],"constant":false,"payable":false,"type":"function","gas":110122},{"name":"name","outputs":[{"type":"string","name":"out"}],"inputs":[],"constant":true,"payable":false,"type":"function","gas":6462},{"name":"symbol","outputs":[{"type":"string","name":"out"}],"inputs":[],"constant":true,"payable":false,"type":"function","gas":6492},{"name":"decimals","outputs":[{"type":"uint256","name":"out"}],"inputs":[],"constant":true,"payable":false,"type":"function","gas":723},{"name":"totalSupply","outputs":[{"type":"uint256","name":"out"}],"inputs":[],"constant":true,"payable":false,"type":"function","gas":753},{"name":"balanceOf","outputs":[{"type":"uint256","name":"out"}],"inputs":[{"type":"address","name":"arg0"}],"constant":true,"payable":false,"type":"function","gas":955}]

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