ERC-4337 Account Abstraction
Smart Wallets & UX
Production-grade ERC-4337 implementation featuring smart contract wallets, gas sponsorship paymasters, session keys for seamless dApp interactions, and guardian-based social recovery.
Technology Stack
SolidityERC-4337OpenZeppelinHardhatUUPS Proxy
Key Features
- Smart contract wallets
- Gas sponsorship (Paymaster)
- ERC-20 gas payment
- Session key module
- Social recovery
- Deterministic deploys
- UUPS upgradeable
- Full test suite
Architecture
┌──────────────┐ ┌──────────────────┐ ┌────────────────┐
│ User/dApp │────▶│ Bundler (RPC) │────▶│ EntryPoint │
└──────────────┘ └──────────────────┘ └───────┬────────┘
│
┌────────────────────────┬────────┴────────┐
│ │ │
┌─────────▼─────────┐ ┌─────────▼──────┐ ┌──────▼──────┐
│ SmartAccount │ │ Verifying │ │ Token │
│ (User Wallet) │ │ Paymaster │ │ Paymaster │
└─────┬───────┬─────┘ └────────────────┘ └─────────────┘
│ │
┌──────────▼──┐ ┌─▼──────────────┐
│ SessionKey │ │ SocialRecovery │
│ Module │ │ Module │
└─────────────┘ └────────────────┘
Code Sample
SmartAccount.sol
contract SmartAccount is
BaseAccount, UUPSUpgradeable, Initializable {
address public owner;
IEntryPoint private immutable _entryPoint;
// Execute a transaction from this wallet
function execute(
address dest,
uint256 value,
bytes calldata data
) external onlyEntryPointOrOwner {
(bool success,) = dest.call{value: value}(data);
require(success, "execution failed");
}
}
Project Metrics
10
Smart Contracts
7
Test Suites
EIP-4337
Standard
Related Products
Blocknetics builds automated tools alongside our consulting practice:
- SolidGuard — Smart contract vulnerability scanning
- ChainComply — Crypto regulatory intelligence
- ChainProof — Blockchain talent certification
Work With Us
This project represents the kind of production-grade blockchain engineering Blocknetics delivers. Whether you need a similar solution or want to extend an existing one, our team is ready.