🔐 NuLLKEY — zkProof-of-Ownership Locker

NuLLKEY is a privacy-preserving asset locker built on Starknet, enabling users to lock NFTs, tokens, or credentials and recover them using zero-knowledge proofs—with no need to reveal identity, secrets, or seed phrases.

💡 Use Cases

• Lost Wallet Recovery: Prove identity through ZK without seed phrase

• Digital Will: Set up asset inheritance with a deadman switch

• Decentralized Custody: Lock assets with flexible, private recovery rules

• DAO Treasury Lockers: Guard shared assets with social proofs & rate limits

• Credential Storage: Lock verifiable credentials tied to proof-based unlock

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🌟 Features

• ZK Recovery: Submit a proof to unlock your assets without revealing any private data

• Multi-Asset Support: Lock ERC-721, ERC-20 tokens, or identity credentials

• Heir Access: Assign heirs for deadman-style automatic recovery

• Social Recovery (optional): Add trusted wallets for multi-signature unlocks

• Cooldown Timers: Protects against spam and rushed attacks

• Audit Trail: On-chain tracking of proof attempts and locker state

• Rate Limiting: Prevents brute-force attempts with enforced cooldown windows

⚙️ Tech Stack

• Smart Contracts: Cairo v2 + Starknet Contracts

• Zero-Knowledge Proofs: Custom ZK circuits (future using zkEmail / zkBiometrics)

• Frontend: Vite + React + TailwindCSS (Glassmorphism UI)

• Wallet: ArgentX (Starknet native wallet integration)

• Tools: Starknet.js, Scarb, snCast, Pragma price feeds (oracle-gated logic)

🚀 Future Enhancements

• 🔍 zkCredential support for off-chain attestations

• ⛓️ Cross-chain locker bridges

• 🛡️ Multi-factor proof systems (email hash + time delay + biometrics)

• 📲 Mobile dApp support

• 🤝 DAO-controlled guardian systems

• 💰 Token-incentivized social recovery agents