This repository contains the smart contracts and tests for Staking VEGA tokens. This smart contract holds staked VEGA tokens that have been fully vested and withdrawn from the vesting contract. Users stake and unstake these tokens whenever they wish, as well as transfer to a new Ethereum address without unstaking the VEGA token. Like every ETH to Vega interaction This raises events on the Ethereum blockchain which is then consumed, verified, and propagated through the Vega network. This contract is meant to be simple while providing an extra layer of security to Vega, namely that in the event of validator compromise, the stake cannot be stolen or lost.
The IStake interface contains the events and a couple helper views that every staking contract must implement to be compatible. Vega_Staking_Bridge implements this interface.
Events:
Stake_Deposited(address indexed user, uint256 amount, bytes32 indexed vega_public_key)Stake_Removed(address indexed user, uint256 amount, bytes32 indexed vega_public_key)Stake_Transferred(address indexed from, uint256 amount, address indexed to, bytes32 indexed vega_public_key)
Views:
staking_token()- returns the address of the token that is able to be staked in the implementing contractstake_balance(address target, bytes32 vega_public_key)- returns the number of tokens staked for that target address and vega_public_key pairtotal_staked()- returns the total tokens staked from all users in the implementing contract
This function allows a user to stake tokens. Since VEGA is a standard ERC20 token and they need to be transferFrom the user to the staking contract to be locked in. In order to do this a user MUST first run the approve on the VEGA token smart contract.
Function signature: stake(uint256 amount, bytes32 vega_public_key) public
Parameters:
- amount - The amount of tokens to stake
- vega_public_key - The target Vega public key that will be credited with the deposit
Emits: Stake_Deposited event
NOTE: users MUST run approve() on VEGA token contract before attempting to stake.
This function allows a user to unstake and withdraw previously staked tokens. The user's address must have at least the amount provided previously staked.
Function signature: remove_stake(uint256 amount, bytes32 vega_public_key) public
Parameters:
- amount - The amount of tokens to remove
- vega_public_key - The target Vega public key that will be unstaked and withdrawn from
Emits: Stake_Removed event
This function allows a user to transfer staked tokens from one Ethereum address to another without unstaking from the target public key. The user running this function must have previously staked tokens to the target vega_public_key.
Function signature: transfer_stake(uint256 amount, address new_address, bytes32 vega_public_key) public
Parameters:
- amount - The amount of tokens to transfer
- new_address - The Ethereum address to own the transferred stake, which will be able to withdraw at a later time
- vega_public_key - The target Vega public key whose balance is to be transfered
Emits: Stake_Transferred event
- Staking Bridge (mainnet):
0x195064D33f09e0c42cF98E665D9506e0dC17de68
- Staking Bridge (testnet):
0xB24e0ac9199e8f4F69eF0eD8ee266b2433AF0dF0 - Staking Bridge (stagnet):
0x7D88CD817227D599815d407D929af18Bb8D57176