Lido On Polygon Liquid Staking Protocol V2

Lido on Polygon is a DAO governed liquid staking protocol for Polygon PoS chain. It allows users to stake their ERC20 MATIC tokens on Ethereum mainnet and immediately get the representation of their share in the form of stMATIC token without maintaining staking infrastructure. Users will get staking rewards and still be able to control their stMATIC tokens MATIC tokens will be delegated across validators that are registered and accepted by the DAO insideLido on Polygon protocol.

Node operators don't have direct access over the delegated assets. They are just providing infrastructure and getting rewards in return. Assets are controlled by Lido on Polygon contracts exclusively. The goal is to help with Polygon decentralization and integrate stMATIC with the variety of protocols and DeFi applications on Ethereum mainnet and Polygon PoS chain. Before getting started with this repo, please read:

• Documentation

Lido DAO

The Lido DAO is an Aragon organization. Since Aragon provides a full end-to-end framework to build DAOs, we use its standard tools. The protocol smart contracts extend AragonApp base contract and can be managed by the DAO.

• Lido DAO Mainnet
• Lido DAO Prater Testnet

Contracts

StMATIC

StMATIC is the core contract which acts as a liquid staking pool. The contract is responsible for deposits, withdrawals, minting and burning liquid tokens, delegating funds to node operators, applying fees and distributing rewards. StMATIC contract also defines stMATIC, an ERC20 token that represents the account's share of the total supply of MATIC tokens inside Lido on Polygon system. It is a non-rebasable token, which means that the amount of tokens in the user's wallet is not going to change. During time, the value of this token is changing, since the amount of MATIC tokens inside the protocol is not constant. StMATIC will be integrated in variety of DeFi applications across Ethereum and Polygon.

NodeOperatorRegistry

The NodeOperatorRegistry contract is the core contract that allows node operators to participate in the Lido staking protocol. Node Operators participate on the protocol as validators and get rewarded for their work. A Node Operator gets added to the Registry by the DAO. Validator reward is distributed evenly amongst all active operators. The contract contains a list of operators, their public keys, and the logic for managing their state.

Deployments

Mainnet

The Mainnet addresses are available here

Testnet

The Testnet addresses are available here

Development

Requirements

• node.js v16

Install

npm i

Build & test

Compile Solidity contracts

npx hardhat compile

Run unit tests

npx hardhat test

ENV

DEPLOYER_PRIVATE_KEY=0x...
ETHERSCAN_API_KEY=ABCD
CHILD_CHAIN_RPC=https://polygon-mumbai.g.alchemy.com/v2/XXX
ROOT_CHAIN_RPC=https://eth-goerli.alchemyapi.io/v2/XXX
ROOT_GAS_PRICE=10000000000
ROOT_GAS_LIMIT=10000000
CHILD_GAS_PRICE=10000000000
CHILD_GAS_LIMIT=10000000
CHECKPOINT_MANAGER=0x
STAKE_MANAGER=0x
MATIC_TOKEN=0x
FX_ROOT=0x
FX_CHILD=0x
DAO=0x
INSURANCE=0x
TREASURY=0x
DEFENDER_TEAM_API_KEY=XXX
DEFENDER_TEAM_API_SECRET_KEY=XXX

• Polygon mainnet protocol addresses
• Polygon testnet protocol addresses

Deploy

Deploy the protocol

npx hardhat run scripts/deploy.ts --network <network-id>

Create Upgrade Proposal

Creating upgrade requests requires an Openzeppelin Defender account.

Initiate StMATIC upgrade request:

npx hardhat run scripts/multisigUpgrade/upgradeStMatic.ts --network <network-id>

To initiate NodeOperatorRegistry upgrade request:

npx hardhat run scripts/multisigUpgrade/upgradeNodeOperatorRegistry.ts --network <network-id>

To initiate LidoNFT upgrade request:

npx hardhat run scripts/multisigUpgrade/upgradeLidoNFT.ts --network <network-id>