EWM light clients operator-controller NFT contracts, enabling NFT claim/mint, LC registration/delegation, rewards calculation and redemption on any EVM chain based on the ERC4907 non-transferrable "rental-nft" standard.
Main components -
sequenceDiagram
participant LCS as Light Client Staker
participant CNP as Controller NFT Portal
participant NSC as NFT Controller SC
participant ASC as NFT Allowance SC
participant ELC as EWM Light Client
participant RM as Reward Manager
LCS->>ASC: Stake NFT Allowance
NSC-->>ASC: Gather NFT Allowances
ASC-->>NSC: Number of NFTs Staked
NSC->>LCS: Mint NFT Controller
ELC->>ELC: Generate Burner Wallet
ELC->>LCS: Provide Burner Wallet Address
LCS->>CNP: Log in
CNP-->>NSC: Initiate Delegation
CNP->>NSC: Set User (Delegate to Burner Wallet)
ELC-->>NSC: Check Delegation Requests
ELC->>NSC: Approve Delegation
NSC-->>CNP: Update Controller Status to Delegated
loop Continuous Operation
ELC->>ELC: Perform Light Client Operations
ELC-->>RM: Log Operations
end
RM->>NSC: Claim Rewards for NFT Controllers
NSC->>NSC: Update Redeemable Rewards
LCS->>CNP: View Earned Rewards
CNP-->>NSC: Initiate Reward Redemption
CNP->>NSC: Redeem Rewards
NSC->>LCS: Transfer Redeemed Rewards
Note over LCS,ELC: NFT not transferrable
opt Un-delegate / Re-delegate
LCS->>CNP: Initiate Un-delegation/Re-delegation
CNP->>NSC: Update Delegation
NSC-->>CNP: Notify of Delegation Change
end
opt End Delegation
CNP->>NSC: End Delegation
NSC-->>CNP: Update Controller Status
end
Clone repo, use stable node version (node v20.10.0 (npm v10.2.3)), ensure .envrc.local
is present with the following, install dependencies and run unit and integration tests.
# Clone the repository
git clone [email protected]:covalenthq/ewm-lc-contracts.git
# Change to the project directory
cd ewm-lc-contracts
# Use the stable version of Node.js
nvm use stable
# Create the .envrc file
echo 'export ERIGON_NODE="<ethereum-erigon-node-url>"' > .envrc
# Allow direnv to load the .envrc file
direnv allow .
# Install dependencies
npm install
# Run test coverage
npm run coverage
You should get something like this -
267 passing (2m)
-----------------------|----------|----------|----------|----------|----------------|
File | % Stmts | % Branch | % Funcs | % Lines |Uncovered Lines |
-----------------------|----------|----------|----------|----------|----------------|
contracts/ | 100 | 86.94 | 100 | 99.64 | |
EwmNftAllowance.sol | 100 | 78.33 | 100 | 100 | |
EwmNftClaim.sol | 100 | 87.5 | 100 | 98.41 | 74 |
EwmNftController.sol | 100 | 91.23 | 100 | 100 | |
contracts/interfaces/ | 100 | 100 | 100 | 100 | |
IERC4907.sol | 100 | 100 | 100 | 100 | |
-----------------------|----------|----------|----------|----------|----------------|
All files | 100 | 86.94 | 100 | 99.64 | |
-----------------------|----------|----------|----------|----------|----------------|
This deployment story outlines the process of setting up the entire NFT ecosystem, from initial contract deployment to user management and reward distribution. It ensures that all necessary configurations are in place, tokens are distributed, and the system is ready for user interaction and ongoing management.
-
Initial Contract Deployment:
- Deploy NFT Controller
- Deploy NFT Claim
- Deploy NFT Allowance
-
Configuration and Setup:
- Deposit reward tokens to the Controller
- Set Claim Admin address
- Configure Claim Allowance Contracts Array
- Unpause the Claim Contract
- Set Allowance Whitelist Merkle Root and Integer Allocation Boolean
-
Metadata and Token Distribution:
- Retrieve and verify metadata for all contracts
- Distribute CXT Faucet Tokens to participants
-
Controller and Whitelist Management:
- Set Controller Minter Admin (to Claim Contract), Transfer Whitelist (to Claim Contract), and Transfer Time
- Set Nft Expiry Ranges
- Verify updated metadata
-
NFT Allocation and Claiming:
- Set NFT Token base URLs
- Execute Whitelisted Allocation for eligible participants
- Perform Admin Batch Claim for all eligible NFTs
- Pause Claim Contract
-
User Management and Rewards:
- Set User Delegates and Expiration times for NFTs
- Distribute rewards to NFT holders
-
Reward Redemption and Stake Release:
- Allow NFT holders to redeem their rewards
- Release stakes for expired NFTs
# deploy all the necessary contracts
npx hardhat run scripts/deployCxtTokenFaucet.js --network ${network}
npx hardhat run scripts/deployNftController.js --network ${network}
npx hardhat run scripts/deployNftClaim.js --network ${network}
npx hardhat run scripts/deployNftAllowance.js --network ${network}
# set contract metadata for use
npx hardhat run scripts/depositControllerRewardTokens.js --network ${network}
npx hardhat run scripts/setControllerNftExpiryRange.js --network ${network}
npx hardhat run scripts/setControllerNftBaseUrl.js --network ${network}
## set contracts for participation
npx hardhat run scripts/setClaimAllowanceContractsArray.js --network ${network}
npx hardhat run scripts/unpauseClaimContract.js --network ${network}
npx hardhat run scripts/distributeCxtFaucetToken.js --network ${network}
npx hardhat run scripts/setAllowanceWhitelistRootIntegerAllocation.js --network ${network}
# extras participants fns for staking and operations
npx hardhat run scripts/executeWhitelistedAllowance.js --network ${network}
## set for nft mint distribution
npx hardhat run scripts/setControllerMinterAdmin.js --network ${network}
npx hardhat run scripts/setControllerTransferWhitelistAndTime.js --network ${network}
npx hardhat run scripts/executeAdminBatchClaimAll.js --network ${network} or npx hardhat run scripts/executeAdminBatchClaimArray.js --network ${network}
npx hardhat run scripts/pauseClaimContract.js --network ${network}
## reward nft holders
npx hardhat run scripts/executeSetUserDelegateAndExpires.js --network ${network}
npx hardhat run scripts/rewardNftHolders.js --network ${network}
npx hardhat run scripts/redeemAllNftRewards.js --network ${network}
## post nfts expiry participants fns
npx hardhat run scripts/releaseStakeForExpiredNfts.js --network ${network}
# extras admin fns
npx hardhat run scripts/setClaimAdmin.js --network ${network}
npx hardhat run scripts/getAllMetadata.js --network ${network}
npx hardhat run scripts/setAllowanceExpiryTime.js --network ${network}