L2 Vault

The Vault contract is a straightforward smart contract designed to enable the DAO to manage chain-native assets and ERC-20 tokens across blockchains other than Ethereum.

This contract is directly controlled by the owner, which is the ownership agent (more here) of the respective chain.

GitHub

The source code of the Vault.vy contract can be found on GitHub .

Transferring Assets¶

The contract features a simple transfer function that allows the owner to transfer tokens out of the Vault.

transfer

Vault.transfer(_token: address, _to: address, _value: uint256):

Guarded Method

This function can only be called by the owner of the contract, which is the L2 Ownership Agent.

Function to transfer a specific amount of tokens from the vault to another address.

Input	Type	Description
`_token`	`address`	Token to transfer
`_to`	`address`	Destination of the asset
`_value`	`uint256`	Amount of assets to transfer

Source code

Vault.vy


NATIVE: constant(address) = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE

owner: public(address)

@external
def transfer(_token: address, _to: address, _value: uint256):
    """
    @notice Transfer an asset
    @param _token The token to transfer, or NATIVE if transferring the chain native asset
    @param _to The destination of the asset
    @param _value The amount of the asset to transfer
    """
    assert msg.sender == self.owner

    if _token == NATIVE:
        send(_to, _value)
    else:
        assert ERC20(_token).transfer(_to, _value, default_return_value=True)

Example


>>> Vault.transfer('0x912CE59144191C1204E64559FE8253a0e49E6548', '0x0000000000000000000000000000000000000000', 1000000000000000000)

Contract Ownership¶

Ownership of the Vault contract follows the classic model of contract ownership. It includes an owner address, which can be updated by first committing a future owner and then applying the changes.

Jupyter Notebook

For a basic demonstration of how to change the ownership of the Vault, please refer to the following example: https://try.vyperlang.org/hub/user-redirect/lab/tree/shared/mo-anon/basic/ownership.ipynb