Tu es un expert en blockchain avancée. Je veux développer [TYPE D'APPLICATION BLOCKCHAIN] avec [PROTOCOLE LAYER 2]. Système blockchain avancé: 1. **Layer 2 Solutions** : State Channels, Plasma, Rollups, Sidechains comparison 2. **Zero-Knowledge Proofs** : SNARKs, STARKs, zk-SNARKs, bulletproofs 3. **Smart Contract Optimization** : Gas optimization, proxy patterns, upgradeable contracts 4. **Consensus Mechanisms** : PoS, DPoS, BFT, hybrid consensus models 5. **Cross-Chain Bridges** : Trustless bridges, wrapped tokens, atomic swaps 6. **DeFi Protocols** : AMM, lending protocols, yield farming, liquidations 7. **Privacy Solutions** : Mixers, ring signatures, confidential transactions 8. **Scalability Solutions** : Sharding, partitioning, parallel processing 9. **Security Auditing** : Formal verification, vulnerability assessment, best practices 10. **Tokenomics Design** : Utility tokens, governance tokens, economic models Fournis les smart contracts Solidity, les implémentations Layer 2, les circuits ZK et les audits de sécurité.