ETH Price: $3,454.00 (+1.63%)

Token

Curve.fi ETH/rETH (rCRV)
 

Overview

Max Total Supply

212.640686026256634754 rCRV

Holders

794

Market

Onchain Market Cap

$0.00

Circulating Supply Market Cap

-

Other Info

Token Contract (WITH 18 Decimals)

Filtered by Token Holder
garrycrypt0.eth
Balance
0.001027227920090966 rCRV

Value
$0.00
0x9b62a7ed23e6e2822ee8045694ef0db9eb099cc7
Loading...
Loading
Loading...
Loading
Loading...
Loading

Click here to update the token information / general information
# Exchange Pair Price  24H Volume % Volume

Contract Source Code Verified (Exact Match)

Contract Name:
Vyper_contract

Compiler Version
vyper:0.2.12

Optimization Enabled:
N/A

Other Settings:
default evmVersion, MIT license

Contract Source Code (Vyper language format)

# @version ^0.2.0
"""
@title Curve LP Token
@author Curve.Fi
@notice Base implementation for an LP token provided for
        supplying liquidity to `StableSwap`
@dev Follows the ERC-20 token standard as defined at
     https://eips.ethereum.org/EIPS/eip-20
"""

from vyper.interfaces import ERC20

implements: ERC20

interface Curve:
    def owner() -> address: view


event Transfer:
    _from: indexed(address)
    _to: indexed(address)
    _value: uint256

event Approval:
    _owner: indexed(address)
    _spender: indexed(address)
    _value: uint256


name: public(String[64])
symbol: public(String[32])

balanceOf: public(HashMap[address, uint256])
allowance: public(HashMap[address, HashMap[address, uint256]])
totalSupply: public(uint256)

minter: public(address)


@external
def __init__(_name: String[64], _symbol: String[32]):
    self.name = _name
    self.symbol = _symbol
    self.minter = msg.sender
    log Transfer(ZERO_ADDRESS, msg.sender, 0)


@view
@external
def decimals() -> uint256:
    """
    @notice Get the number of decimals for this token
    @dev Implemented as a view method to reduce gas costs
    @return uint256 decimal places
    """
    return 18


@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
    """
    self.balanceOf[_from] -= _value
    self.balanceOf[_to] += _value

    _allowance: uint256 = self.allowance[_from][msg.sender]
    if _allowance != MAX_UINT256:
        self.allowance[_from][msg.sender] = _allowance - _value

    log Transfer(_from, _to, _value)
    return True


@external
def approve(_spender : address, _value : uint256) -> bool:
    """
    @notice Approve the passed address to transfer the specified amount of
            tokens on behalf of msg.sender
    @dev Beware that changing an allowance via this method brings the risk
         that someone may use both the old and new allowance by unfortunate
         transaction ordering. This may be mitigated with the use of
         {increaseAllowance} and {decreaseAllowance}.
         https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
    @param _spender The address which will transfer the funds
    @param _value The amount of tokens that may be transferred
    @return bool success
    """
    self.allowance[msg.sender][_spender] = _value

    log Approval(msg.sender, _spender, _value)
    return True


@external
def increaseAllowance(_spender: address, _added_value: uint256) -> bool:
    """
    @notice Increase the allowance granted to `_spender` by the caller
    @dev This is alternative to {approve} that can be used as a mitigation for
         the potential race condition
    @param _spender The address which will transfer the funds
    @param _added_value The amount of to increase the allowance
    @return bool success
    """
    allowance: uint256 = self.allowance[msg.sender][_spender] + _added_value
    self.allowance[msg.sender][_spender] = allowance

    log Approval(msg.sender, _spender, allowance)
    return True


@external
def decreaseAllowance(_spender: address, _subtracted_value: uint256) -> bool:
    """
    @notice Decrease the allowance granted to `_spender` by the caller
    @dev This is alternative to {approve} that can be used as a mitigation for
         the potential race condition
    @param _spender The address which will transfer the funds
    @param _subtracted_value The amount of to decrease the allowance
    @return bool success
    """
    allowance: uint256 = self.allowance[msg.sender][_spender] - _subtracted_value
    self.allowance[msg.sender][_spender] = allowance

    log Approval(msg.sender, _spender, allowance)
    return True


@external
def mint(_to: address, _value: uint256) -> bool:
    """
    @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

    self.totalSupply += _value
    self.balanceOf[_to] += _value

    log Transfer(ZERO_ADDRESS, _to, _value)
    return True


@external
def burnFrom(_to: address, _value: uint256) -> bool:
    """
    @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.
    """
    assert msg.sender == self.minter

    self.totalSupply -= _value
    self.balanceOf[_to] -= _value

    log Transfer(_to, ZERO_ADDRESS, _value)
    return True


@external
def set_minter(_minter: address):
    assert msg.sender == self.minter
    self.minter = _minter


@external
def set_name(_name: String[64], _symbol: String[32]):
    assert Curve(self.minter).owner() == msg.sender
    self.name = _name
    self.symbol = _symbol

Contract Security Audit

Contract ABI

[{"name":"Transfer","inputs":[{"name":"_from","type":"address","indexed":true},{"name":"_to","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":[{"name":"_name","type":"string"},{"name":"_symbol","type":"string"}],"outputs":[]},{"stateMutability":"view","type":"function","name":"decimals","inputs":[],"outputs":[{"name":"","type":"uint256"}],"gas":288},{"stateMutability":"nonpayable","type":"function","name":"transfer","inputs":[{"name":"_to","type":"address"},{"name":"_value","type":"uint256"}],"outputs":[{"name":"","type":"bool"}],"gas":77340},{"stateMutability":"nonpayable","type":"function","name":"transferFrom","inputs":[{"name":"_from","type":"address"},{"name":"_to","type":"address"},{"name":"_value","type":"uint256"}],"outputs":[{"name":"","type":"bool"}],"gas":115282},{"stateMutability":"nonpayable","type":"function","name":"approve","inputs":[{"name":"_spender","type":"address"},{"name":"_value","type":"uint256"}],"outputs":[{"name":"","type":"bool"}],"gas":37821},{"stateMutability":"nonpayable","type":"function","name":"increaseAllowance","inputs":[{"name":"_spender","type":"address"},{"name":"_added_value","type":"uint256"}],"outputs":[{"name":"","type":"bool"}],"gas":40365},{"stateMutability":"nonpayable","type":"function","name":"decreaseAllowance","inputs":[{"name":"_spender","type":"address"},{"name":"_subtracted_value","type":"uint256"}],"outputs":[{"name":"","type":"bool"}],"gas":40389},{"stateMutability":"nonpayable","type":"function","name":"mint","inputs":[{"name":"_to","type":"address"},{"name":"_value","type":"uint256"}],"outputs":[{"name":"","type":"bool"}],"gas":79579},{"stateMutability":"nonpayable","type":"function","name":"burnFrom","inputs":[{"name":"_to","type":"address"},{"name":"_value","type":"uint256"}],"outputs":[{"name":"","type":"bool"}],"gas":79597},{"stateMutability":"nonpayable","type":"function","name":"set_minter","inputs":[{"name":"_minter","type":"address"}],"outputs":[],"gas":37785},{"stateMutability":"nonpayable","type":"function","name":"set_name","inputs":[{"name":"_name","type":"string"},{"name":"_symbol","type":"string"}],"outputs":[],"gas":181606},{"stateMutability":"view","type":"function","name":"name","inputs":[],"outputs":[{"name":"","type":"string"}],"gas":12990},{"stateMutability":"view","type":"function","name":"symbol","inputs":[],"outputs":[{"name":"","type":"string"}],"gas":10743},{"stateMutability":"view","type":"function","name":"balanceOf","inputs":[{"name":"arg0","type":"address"}],"outputs":[{"name":"","type":"uint256"}],"gas":2963},{"stateMutability":"view","type":"function","name":"allowance","inputs":[{"name":"arg0","type":"address"},{"name":"arg1","type":"address"}],"outputs":[{"name":"","type":"uint256"}],"gas":3208},{"stateMutability":"view","type":"function","name":"totalSupply","inputs":[],"outputs":[{"name":"","type":"uint256"}],"gas":2808},{"stateMutability":"view","type":"function","name":"minter","inputs":[],"outputs":[{"name":"","type":"address"}],"gas":2838}]

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

Deployed Bytecode

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

Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)

00000000000000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000000080000000000000000000000000000000000000000000000000000000000000001143757276652e6669204554482f7245544800000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000047243525600000000000000000000000000000000000000000000000000000000

-----Decoded View---------------
Arg [0] : _name (string): Curve.fi ETH/rETH
Arg [1] : _symbol (string): rCRV

-----Encoded View---------------
6 Constructor Arguments found :
Arg [0] : 0000000000000000000000000000000000000000000000000000000000000040
Arg [1] : 0000000000000000000000000000000000000000000000000000000000000080
Arg [2] : 0000000000000000000000000000000000000000000000000000000000000011
Arg [3] : 43757276652e6669204554482f72455448000000000000000000000000000000
Arg [4] : 0000000000000000000000000000000000000000000000000000000000000004
Arg [5] : 7243525600000000000000000000000000000000000000000000000000000000


Loading...
Loading
Loading...
Loading
[ Download: CSV Export  ]
[ Download: CSV Export  ]

A token is a representation of an on-chain or off-chain asset. The token page shows information such as price, total supply, holders, transfers and social links. Learn more about this page in our Knowledge Base.