Is there automated testing included?

Yes, the skill provides Hardhat test suites and a privacy validation script to ensure no sensitive data accidentally leaks into contract storage or events.

How does it handle deterministic addresses?

It uses an AccountFactory with CREATE2 to allow users to calculate their wallet address before deployment based on their private data or salts.

Does it support Zero-Knowledge (ZK) proofs?

Yes, it includes architectural patterns for zero-knowledge proof verification within the ERC-4337 signature validation workflow.

Can it be used for non-vehicle data?

Absolutely; while optimized for vehicle identity, the commitment patterns work for biometrics, personal IDs, or any sensitive data requiring on-chain privacy.

What is the main benefit of this skill?

It allows developers to build ERC-4337 wallets that protect sensitive data like vehicle IDs using cryptographic commitments instead of storing raw values on-chain.

ERC-4337 Privacy Wallet Development

Name: ERC-4337 Privacy Wallet Development
Author: mashharuki

bymashharuki

0•

Security & Testing

Develops privacy-preserving ERC-4337 account abstraction wallets for sensitive data like vehicle identities and biometric information.

This skill empowers developers to build secure, privacy-first smart contract wallets using the ERC-4337 standard. It specifically addresses the challenges of handling sensitive on-chain data—such as license plates or personal IDs—by utilizing commitment schemes, deterministic address generation via CREATE2, and ZK proof integration. It provides a complete development workflow from off-chain commitment generation to on-chain validation, ensuring that raw sensitive data is never exposed to the public ledger while maintaining full account functionality.

Key Features

01Comprehensive test suites for UserOperation and privacy verification

02Deterministic address generation using CREATE2 for counterfactual deployment

030 GitHub stars

04Privacy-protected smart contract templates for ERC-4337 compliance

05Cryptographic commitment scheme implementation for sensitive data

06Automated privacy validation tooling to prevent data leaks

Use Cases

01Implementing biometric-secured account abstraction with off-chain verification

02Building vehicle identity wallets that hide license plate numbers on-chain

03Creating privacy-centric wallets requiring predictable cross-chain addresses

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add mashharuki/mistral-worldwide-hackathon erc4337-privacy-wallet-dev

For use in Claude.ai and ChatGPT

Key Features

01Comprehensive test suites for UserOperation and privacy verification

02Deterministic address generation using CREATE2 for counterfactual deployment

030 GitHub stars

04Privacy-protected smart contract templates for ERC-4337 compliance

05Cryptographic commitment scheme implementation for sensitive data

06Automated privacy validation tooling to prevent data leaks

Use Cases

01Implementing biometric-secured account abstraction with off-chain verification

02Building vehicle identity wallets that hide license plate numbers on-chain

03Creating privacy-centric wallets requiring predictable cross-chain addresses

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add mashharuki/mistral-worldwide-hackathon erc4337-privacy-wallet-dev

For use in Claude.ai and ChatGPT