LancerWallet Smart Contracts

Smart contracts for the LancerWallet multi-chain crypto wallet platform.

Contracts

Wallet.sol

A minimal multisig-style smart contract wallet with the following features:

• Multiple owners with configurable threshold signatures
• Execute arbitrary transactions via signature verification
• Add/remove owners through multisig consensus
• Replay protection using nonces
• EIP-1271 signature validation support
• Gas-optimized design

WalletFactory.sol

Factory contract for deploying Wallet instances:

• Create new wallet contracts with specified owners and threshold
• Emits WalletCreated events for tracking deployments
• Simple deployment pattern for scalability

Deployment

Core Testnet2

• WalletFactory: 0x1581eAD89db62985c366eb67728C0474b9908A1C
• Network: Core Testnet2 (Chain ID: 1114)
• RPC: https://rpc.test2.btcs.network
• Explorer: https://scan.test2.btcs.network/

Usage

Deploy a New Wallet

const factory = await ethers.getContractAt("WalletFactory", "0x1581eAD89db62985c366eb67728C0474b9908A1C");
const tx = await factory.createWallet([owner1, owner2], 2); // 2-of-2 multisig
const receipt = await tx.wait();
const walletAddress = receipt.events.find(e => e.event === "WalletCreated").args.wallet;

Execute Transactions

const wallet = await ethers.getContractAt("Wallet", walletAddress);
const txHash = await wallet.getTransactionHash(to, value, data, nonce);
const sig1 = await signer1.signMessage(ethers.utils.arrayify(txHash));
const sig2 = await signer2.signMessage(ethers.utils.arrayify(txHash));
await wallet.execute(to, value, data, [sig1, sig2]);

Development

Setup

npm install
cp .env.example .env
# Edit .env with your private key and API keys

Compile

npx hardhat compile

Test

npx hardhat test

Deploy

npx hardhat run --network core_testnet2 scripts/deploy.js

Security Features

• Signature verification in ascending address order prevents duplicates
• Nonce-based replay protection
• Owner uniqueness validation
• Reentrancy-safe execution
• EIP-1271 contract signature standard support

License

MIT