ETH Price: $3,490.93 (+1.09%)

Contract

0x4BDF4DDb373A0B5238B64c718aE1c32b5E93c279
 

Overview

ETH Balance

0 ETH

Eth Value

$0.00

Multichain Info

No addresses found
Transaction Hash
Method
Block
From
To
Approve161686812022-12-12 12:39:23744 days ago1670848763IN
0x4BDF4DDb...b5E93c279
0 ETH0.0003610815
Approve133523472021-10-04 11:31:581178 days ago1633347118IN
0x4BDF4DDb...b5E93c279
0 ETH0.0023562551
Approve125059012021-05-25 21:27:061309 days ago1621978026IN
0x4BDF4DDb...b5E93c279
0 ETH0.0016266935
Approve124701562021-05-20 8:19:561315 days ago1621498796IN
0x4BDF4DDb...b5E93c279
0 ETH0.0040656888.00000123
Approve124037272021-05-10 1:46:121325 days ago1620611172IN
0x4BDF4DDb...b5E93c279
0 ETH0.0043059393.2
Approve123588482021-05-03 3:34:361332 days ago1620012876IN
0x4BDF4DDb...b5E93c279
0 ETH0.0017196437
Approve122583762021-04-17 15:16:011347 days ago1618672561IN
0x4BDF4DDb...b5E93c279
0 ETH0.00767199166.1
Approve122311872021-04-13 10:28:361352 days ago1618309716IN
0x4BDF4DDb...b5E93c279
0 ETH0.0039576987.6042
Approve122289472021-04-13 2:05:461352 days ago1618279546IN
0x4BDF4DDb...b5E93c279
0 ETH0.0037344183.17
Approve122194212021-04-11 15:23:191353 days ago1618154599IN
0x4BDF4DDb...b5E93c279
0 ETH0.0033430974
Approve119996532021-03-08 19:08:561387 days ago1615230536IN
0x4BDF4DDb...b5E93c279
0 ETH0.00565752126
Approve119735252021-03-04 18:57:051391 days ago1614884225IN
0x4BDF4DDb...b5E93c279
0 ETH0.00657215146.37
Approve119377972021-02-27 6:38:561397 days ago1614407936IN
0x4BDF4DDb...b5E93c279
0 ETH0.0038165885.00000145
Approve118869802021-02-19 11:07:341405 days ago1613732854IN
0x4BDF4DDb...b5E93c279
0 ETH0.005105113.00000145
Approve117368442021-01-27 8:54:461428 days ago1611737686IN
0x4BDF4DDb...b5E93c279
0 ETH0.0034325476
Approve117162752021-01-24 4:51:401431 days ago1611463900IN
0x4BDF4DDb...b5E93c279
0 ETH0.0041145391.1
Approve116879452021-01-19 20:34:191435 days ago1611088459IN
0x4BDF4DDb...b5E93c279
0 ETH0.0028009762
Approve116590132021-01-15 10:00:121440 days ago1610704812IN
0x4BDF4DDb...b5E93c279
0 ETH0.0025299156
Approve116419762021-01-12 19:07:351442 days ago1610478455IN
0x4BDF4DDb...b5E93c279
0 ETH0.0039755788
Approve116028502021-01-06 19:06:051448 days ago1609959965IN
0x4BDF4DDb...b5E93c279
0 ETH0.00622956138.74
Approve115680112021-01-01 11:02:051454 days ago1609498925IN
0x4BDF4DDb...b5E93c279
0 ETH0.0017798739.64
Approve115607922020-12-31 8:27:351455 days ago1609403255IN
0x4BDF4DDb...b5E93c279
0 ETH0.0043194796.2
Approve115372422020-12-27 17:40:251458 days ago1609090825IN
0x4BDF4DDb...b5E93c279
0 ETH0.0027389661
Approve115289582020-12-26 11:06:411460 days ago1608980801IN
0x4BDF4DDb...b5E93c279
0 ETH0.0018070840
Approve115248462020-12-25 20:01:081460 days ago1608926468IN
0x4BDF4DDb...b5E93c279
0 ETH0.0013557630.01
View all transactions

View more zero value Internal Transactions in Advanced View mode

Advanced mode:
Loading...
Loading

Similar Match Source Code
This contract matches the deployed Bytecode of the Source Code for Contract 0x1337BedC...2A27963EC
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:0.2.5

Optimization Enabled:
N/A

Other Settings:
default evmVersion, None 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])
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])
allowances: HashMap[address, HashMap[address, uint256]]
total_supply: 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.total_supply = init_supply
    self.minter = msg.sender
    log Transfer(ZERO_ADDRESS, msg.sender, init_supply)


@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


@view
@external
def totalSupply() -> uint256:
    """
    @dev Total number of tokens in existence.
    """
    return self.total_supply


@view
@external
def allowance(_owner : address, _spender : address) -> uint256:
    """
    @dev Function to check the amount of tokens that an owner allowed to a spender.
    @param _owner The address which owns the funds.
    @param _spender The address which will spend the funds.
    @return An uint256 specifying the amount of tokens still available for the spender.
    """
    return self.allowances[_owner][_spender]


@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
    if msg.sender != self.minter:  # minter is allowed to transfer anything
        _allowance: uint256 = self.allowances[_from][msg.sender]
        if _allowance != MAX_UINT256:
            # NOTE: vyper does not allow underflows
            # so the following subtraction would revert on insufficient allowance
            self.allowances[_from][msg.sender] = _allowance - _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.
    """
    assert _value == 0 or self.allowances[msg.sender][_spender] == 0
    self.allowances[msg.sender][_spender] = _value
    log Approval(msg.sender, _spender, _value)
    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
    assert _to != ZERO_ADDRESS
    self.total_supply += _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
    assert _to != ZERO_ADDRESS

    self.total_supply -= _value
    self.balanceOf[_to] -= _value
    log Transfer(_to, ZERO_ADDRESS, _value)

    return True

Contract Security Audit

Contract ABI

[{"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":[{"type":"string","name":"_name"},{"type":"string","name":"_symbol"},{"type":"uint256","name":"_decimals"},{"type":"uint256","name":"_supply"}],"stateMutability":"nonpayable","type":"constructor"},{"name":"set_minter","outputs":[],"inputs":[{"type":"address","name":"_minter"}],"stateMutability":"nonpayable","type":"function","gas":36218},{"name":"set_name","outputs":[],"inputs":[{"type":"string","name":"_name"},{"type":"string","name":"_symbol"}],"stateMutability":"nonpayable","type":"function","gas":177979},{"name":"totalSupply","outputs":[{"type":"uint256","name":""}],"inputs":[],"stateMutability":"view","type":"function","gas":1121},{"name":"allowance","outputs":[{"type":"uint256","name":""}],"inputs":[{"type":"address","name":"_owner"},{"type":"address","name":"_spender"}],"stateMutability":"view","type":"function","gas":1581},{"name":"transfer","outputs":[{"type":"bool","name":""}],"inputs":[{"type":"address","name":"_to"},{"type":"uint256","name":"_value"}],"stateMutability":"nonpayable","type":"function","gas":74803},{"name":"transferFrom","outputs":[{"type":"bool","name":""}],"inputs":[{"type":"address","name":"_from"},{"type":"address","name":"_to"},{"type":"uint256","name":"_value"}],"stateMutability":"nonpayable","type":"function","gas":112302},{"name":"approve","outputs":[{"type":"bool","name":""}],"inputs":[{"type":"address","name":"_spender"},{"type":"uint256","name":"_value"}],"stateMutability":"nonpayable","type":"function","gas":39049},{"name":"mint","outputs":[{"type":"bool","name":""}],"inputs":[{"type":"address","name":"_to"},{"type":"uint256","name":"_value"}],"stateMutability":"nonpayable","type":"function","gas":75779},{"name":"burnFrom","outputs":[{"type":"bool","name":""}],"inputs":[{"type":"address","name":"_to"},{"type":"uint256","name":"_value"}],"stateMutability":"nonpayable","type":"function","gas":75797},{"name":"name","outputs":[{"type":"string","name":""}],"inputs":[],"stateMutability":"view","type":"function","gas":7733},{"name":"symbol","outputs":[{"type":"string","name":""}],"inputs":[],"stateMutability":"view","type":"function","gas":6786},{"name":"decimals","outputs":[{"type":"uint256","name":""}],"inputs":[],"stateMutability":"view","type":"function","gas":1391},{"name":"balanceOf","outputs":[{"type":"uint256","name":""}],"inputs":[{"type":"address","name":"arg0"}],"stateMutability":"view","type":"function","gas":1636}]

Deployed Bytecode

0x341561000a57600080fd5b600436101561001857610805565b600035601c52631652e9fc60005114156100525760043560a01c1561003c57600080fd5b600654331461004a57600080fd5b600435600655005b63e1430e06600051141561019657606060043560040161014037604060043560040135111561008057600080fd5b60406024356004016101c03760206024356004013511156100a057600080fd5b3360206102806004638da5cb5b6102205261023c6006545afa6100c257600080fd5b601f3d116100cf57600080fd5b60005061028051146100e057600080fd5b61014080600060c052602060c020602082510161012060006003818352015b8261012051602002111561011257610134565b61012051602002850151610120518501555b81516001018083528114156100ff575b5050505050506101c080600160c052602060c020602082510161012060006002818352015b8261012051602002111561016c5761018e565b61012051602002850151610120518501555b8151600101808352811415610159575b505050505050005b6318160ddd60005114156101b25760055460005260206000f350005b63dd62ed3e600051141561020a5760043560a01c156101d057600080fd5b60243560a01c156101e057600080fd5b600460043560e05260c052604060c02060243560e05260c052604060c0205460005260206000f350005b63a9059cbb60005114156102bf5760043560a01c1561022857600080fd5b60033360e05260c052604060c02080546024358082101561024857600080fd5b80820390509050815550600360043560e05260c052604060c020805460243581818301101561027657600080fd5b8082019050905081555060243561014052600435337fddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef6020610140a3600160005260206000f350005b6323b872dd60005114156104185760043560a01c156102dd57600080fd5b60243560a01c156102ed57600080fd5b600360043560e05260c052604060c02080546044358082101561030f57600080fd5b80820390509050815550600360243560e05260c052604060c020805460443581818301101561033d57600080fd5b808201905090508155506006543318156103d757600460043560e05260c052604060c0203360e05260c052604060c02054610140527fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff6101405118156103d65761014051604435808210156103b157600080fd5b80820390509050600460043560e05260c052604060c0203360e05260c052604060c020555b5b604435610160526024356004357fddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef6020610160a3600160005260206000f350005b63095ea7b360005114156104ce5760043560a01c1561043657600080fd5b6024351515610446576001610465565b60043360e05260c052604060c02060043560e05260c052604060c02054155b5b61046f57600080fd5b60243560043360e05260c052604060c02060043560e05260c052604060c0205560243561014052600435337f8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b9256020610140a3600160005260206000f350005b6340c10f1960005114156105975760043560a01c156104ec57600080fd5b60065433146104fa57600080fd5b60006004351861050957600080fd5b6005805460243581818301101561051f57600080fd5b80820190509050815550600360043560e05260c052604060c020805460243581818301101561054d57600080fd5b808201905090508155506024356101405260043560007fddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef6020610140a3600160005260206000f350005b6379cc6790600051141561065c5760043560a01c156105b557600080fd5b60065433146105c357600080fd5b6000600435186105d257600080fd5b60058054602435808210156105e657600080fd5b80820390509050815550600360043560e05260c052604060c02080546024358082101561061257600080fd5b808203905090508155506024356101405260006004357fddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef6020610140a3600160005260206000f350005b6306fdde0360005114156107055760008060c052602060c020610180602082540161012060006003818352015b8261012051602002111561069c576106be565b61012051850154610120516020028501525b8151600101808352811415610689575b50505050505061018051806101a001818260206001820306601f82010390500336823750506020610160526040610180510160206001820306601f8201039050610160f350005b6395d89b4160005114156107ae5760018060c052602060c020610180602082540161012060006002818352015b8261012051602002111561074557610767565b61012051850154610120516020028501525b8151600101808352811415610732575b50505050505061018051806101a001818260206001820306601f82010390500336823750506020610160526040610180510160206001820306601f8201039050610160f350005b63313ce56760005114156107ca5760025460005260206000f350005b6370a0823160005114156108045760043560a01c156107e857600080fd5b600360043560e05260c052604060c0205460005260206000f350005b5b60006000fd

Block Transaction Difficulty Gas Used Reward
View All Blocks Produced

Block Uncle Number Difficulty Gas Used Reward
View All Uncles
Loading...
Loading
Loading...
Loading

Validator Index Block Amount
View All Withdrawals

Transaction Hash Block Value Eth2 PubKey Valid
View All Deposits
Loading...
Loading
[ Download: CSV Export  ]

A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.