Contract

0x01A7c803b0821b0D8b3dCa7E7193302c326658Ad

Source Code

Overview

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0 ETH

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ContractCreator

0x36c64835...824a93aF4 at txn 0x734fce3d337449b229c5ea315cb77ae88f32c59d68529e0a131ffbd746de4377

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Contract Source Code Verified (Exact Match)

Contract Name:

Vesting Escrow Factory

Compiler Version

vyper:0.3.7

Optimization Enabled:

N/A

Other Settings:

default evmVersion, GNU GPLv3 license

Contract Source Code (Vyper language format)

IDE

# @version 0.3.7

"""
@title Vesting Escrow Factory
@author Curve Finance, Yearn Finance, Lido Finance
@license GPL-3.0
@notice Stores and distributes ERC20 tokens by deploying `VestingEscrow` contracts
"""

from vyper.interfaces import ERC20


interface IVestingEscrow:
    def initialize(
        token: address,
        amount: uint256,
        recipient: address,
        start_time: uint256,
        end_time: uint256,
        cliff_length: uint256,
        is_fully_revokable: bool,
        voting_adapter_addr: address,
    ) -> bool: nonpayable


event VestingEscrowCreated:
    creator: indexed(address)
    recipient: indexed(address)
    escrow: address


event ERC20Recovered:
    token: address
    amount: uint256


event ETHRecovered:
    amount: uint256


event VotingAdapterUpgraded:
    voting_adapter: address


event OwnerChanged:
    owner: address


event ManagerChanged:
    manager: address


TARGET: immutable(address)
TOKEN: immutable(address)
voting_adapter: public(address)
owner: public(address)
manager: public(address)


@external
def __init__(
    target: address,
    token: address,
    owner: address,
    manager: address,
    voting_adapter: address,
):
    """
    @notice Contract constructor
    @dev Prior to deployment you must deploy one copy of `VestingEscrow` which
         is used as a library for vesting contracts deployed by this factory
    @param target `VestingEscrow` contract address
    @param token Address of the ERC20 token being distributed using escrows
    @param owner Address of the owner of the deployed escrows
    @param manager Address of the manager of the deployed escrows
    @param voting_adapter Address of the Lido Voting Adapter
    """
    assert target != empty(address), "zero target"
    assert owner != empty(address), "zero owner"
    assert token != empty(address), "zero token"
    TARGET = target
    TOKEN = token
    self.owner = owner
    self.manager = manager
    self.voting_adapter = voting_adapter


@external
def deploy_vesting_contract(
    amount: uint256,
    recipient: address,
    vesting_duration: uint256,
    vesting_start: uint256 = block.timestamp,
    cliff_length: uint256 = 0,
    is_fully_revokable: bool = False,  # use ordinary escrow by default
) -> address:
    """
    @notice Deploy and fund a new vesting contract
    @param amount Amount of the tokens to be vested after fundings
    @param recipient Address to vest tokens for
    @param vesting_duration Time period over which tokens are released
    @param vesting_start Epoch time when tokens begin to vest
    @param cliff_length Duration after which the first portion vests
    @param is_fully_revokable Fully revockable flag
    """
    assert vesting_duration > 0, "incorrect vesting duration"
    assert cliff_length <= vesting_duration, "incorrect vesting cliff"
    assert recipient != empty(address), "zero recipient"
    assert amount > 0, "incorrect amount"

    escrow: address = create_minimal_proxy_to(TARGET)

    assert ERC20(TOKEN).transferFrom(
        msg.sender, escrow, amount, default_return_value=True
    ), "transferFrom deployer to escrow failed"

    IVestingEscrow(escrow).initialize(
        TOKEN,
        amount,
        recipient,
        vesting_start,
        vesting_start + vesting_duration,
        cliff_length,
        is_fully_revokable,
        self,
    )
    log VestingEscrowCreated(
        msg.sender,
        recipient,
        escrow,
    )
    return escrow


@external
def recover_erc20(token: address, amount: uint256):
    """
    @notice Recover ERC20 tokens to owner
    @param token Address of the ERC20 token to be recovered
    """
    if amount != 0:
        assert ERC20(token).transfer(
            self.owner, amount, default_return_value=True
        ), "transfer failed"
        log ERC20Recovered(token, amount)


@external
def recover_ether():
    """
    @notice Recover Ether to owner
    """
    amount: uint256 = self.balance
    if amount != 0:
        self._safe_send_ether(self.owner, amount)
        log ETHRecovered(amount)


@external
def update_voting_adapter(voting_adapter: address):
    """
    @notice Update voting_adapter to be used by vestings
    @param voting_adapter Address of the new VotingAdapter implementation
    """
    self._check_sender_is_owner()
    self.voting_adapter = voting_adapter
    log VotingAdapterUpgraded(voting_adapter)


@external
def change_owner(owner: address):
    """
    @notice Change contract owner.
    @param owner Address of the new owner. Must be non-zero.
    """
    self._check_sender_is_owner()
    assert owner != empty(address), "zero owner address"

    self.owner = owner
    log OwnerChanged(owner)


@external
def change_manager(manager: address):
    """
    @notice Set contract manager.
            Can update manager if it is already set.
            Can be called only by the owner.
    @param manager Address of the new manager
    """
    self._check_sender_is_owner()

    self.manager = manager
    log ManagerChanged(manager)


@external
@view
def token() -> address:
    return TOKEN


@external
@view
def target() -> address:
    return TARGET


@internal
def _check_sender_is_owner():
    assert msg.sender == self.owner, "msg.sender not owner"


@internal
def _safe_send_ether(_to: address, _value: uint256):
    """
    @notice Overcome 2300 gas limit on simple send
    """
    _response: Bytes[32] = raw_call(
        _to, empty(bytes32), value=_value, max_outsize=32
    )
    if len(_response) > 0:
        assert convert(_response, bool), "ETH transfer failed"

Contract ABI

[{"name":"VestingEscrowCreated","inputs":[{"name":"creator","type":"address","indexed":true},{"name":"recipient","type":"address","indexed":true},{"name":"escrow","type":"address","indexed":false}],"anonymous":false,"type":"event"},{"name":"ERC20Recovered","inputs":[{"name":"token","type":"address","indexed":false},{"name":"amount","type":"uint256","indexed":false}],"anonymous":false,"type":"event"},{"name":"ETHRecovered","inputs":[{"name":"amount","type":"uint256","indexed":false}],"anonymous":false,"type":"event"},{"name":"VotingAdapterUpgraded","inputs":[{"name":"voting_adapter","type":"address","indexed":false}],"anonymous":false,"type":"event"},{"name":"OwnerChanged","inputs":[{"name":"owner","type":"address","indexed":false}],"anonymous":false,"type":"event"},{"name":"ManagerChanged","inputs":[{"name":"manager","type":"address","indexed":false}],"anonymous":false,"type":"event"},{"stateMutability":"nonpayable","type":"constructor","inputs":[{"name":"target","type":"address"},{"name":"token","type":"address"},{"name":"owner","type":"address"},{"name":"manager","type":"address"},{"name":"voting_adapter","type":"address"}],"outputs":[]},{"stateMutability":"nonpayable","type":"function","name":"deploy_vesting_contract","inputs":[{"name":"amount","type":"uint256"},{"name":"recipient","type":"address"},{"name":"vesting_duration","type":"uint256"}],"outputs":[{"name":"","type":"address"}]},{"stateMutability":"nonpayable","type":"function","name":"deploy_vesting_contract","inputs":[{"name":"amount","type":"uint256"},{"name":"recipient","type":"address"},{"name":"vesting_duration","type":"uint256"},{"name":"vesting_start","type":"uint256"}],"outputs":[{"name":"","type":"address"}]},{"stateMutability":"nonpayable","type":"function","name":"deploy_vesting_contract","inputs":[{"name":"amount","type":"uint256"},{"name":"recipient","type":"address"},{"name":"vesting_duration","type":"uint256"},{"name":"vesting_start","type":"uint256"},{"name":"cliff_length","type":"uint256"}],"outputs":[{"name":"","type":"address"}]},{"stateMutability":"nonpayable","type":"function","name":"deploy_vesting_contract","inputs":[{"name":"amount","type":"uint256"},{"name":"recipient","type":"address"},{"name":"vesting_duration","type":"uint256"},{"name":"vesting_start","type":"uint256"},{"name":"cliff_length","type":"uint256"},{"name":"is_fully_revokable","type":"bool"}],"outputs":[{"name":"","type":"address"}]},{"stateMutability":"nonpayable","type":"function","name":"recover_erc20","inputs":[{"name":"token","type":"address"},{"name":"amount","type":"uint256"}],"outputs":[]},{"stateMutability":"nonpayable","type":"function","name":"recover_ether","inputs":[],"outputs":[]},{"stateMutability":"nonpayable","type":"function","name":"update_voting_adapter","inputs":[{"name":"voting_adapter","type":"address"}],"outputs":[]},{"stateMutability":"nonpayable","type":"function","name":"change_owner","inputs":[{"name":"owner","type":"address"}],"outputs":[]},{"stateMutability":"nonpayable","type":"function","name":"change_manager","inputs":[{"name":"manager","type":"address"}],"outputs":[]},{"stateMutability":"view","type":"function","name":"token","inputs":[],"outputs":[{"name":"","type":"address"}]},{"stateMutability":"view","type":"function","name":"target","inputs":[],"outputs":[{"name":"","type":"address"}]},{"stateMutability":"view","type":"function","name":"voting_adapter","inputs":[],"outputs":[{"name":"","type":"address"}]},{"stateMutability":"view","type":"function","name":"owner","inputs":[],"outputs":[{"name":"","type":"address"}]},{"stateMutability":"view","type":"function","name":"manager","inputs":[],"outputs":[{"name":"","type":"address"}]}]

Contract Creation Code

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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)

000000000000000000000000b8c6ab52b9491fcef27f6c313768cfe966a3cfbd00000000000000000000000014ae7daeecdf57034f3e9db8564e46dba8d97344000000000000000000000000e92329ec7ddb11d25e25b3c21eebf11f15eb325d00000000000000000000000096d2ff1c4d30f592b91fd731e218247689a76915000000000000000000000000c911398c001e400ba0ad62518909863465bab35e

-----Decoded View---------------
Arg [0] : target (address): 0xb8c6aB52b9491FcEf27F6c313768CFe966a3CFBd
Arg [1] : token (address): 0x14ae7daeecdf57034f3E9db8564e46Dba8D97344
Arg [2] : owner (address): 0xE92329EC7ddB11D25e25b3c21eeBf11f15eB325d
Arg [3] : manager (address): 0x96d2Ff1C4D30f592B91fd731E218247689a76915
Arg [4] : voting_adapter (address): 0xC911398C001E400ba0Ad62518909863465BAb35e

-----Encoded View---------------
5 Constructor Arguments found :
Arg [0] : 000000000000000000000000b8c6ab52b9491fcef27f6c313768cfe966a3cfbd
Arg [1] : 00000000000000000000000014ae7daeecdf57034f3e9db8564e46dba8d97344
Arg [2] : 000000000000000000000000e92329ec7ddb11d25e25b3c21eebf11f15eb325d
Arg [3] : 00000000000000000000000096d2ff1c4d30f592b91fd731e218247689a76915
Arg [4] : 000000000000000000000000c911398c001e400ba0ad62518909863465bab35e

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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.