Account Abstraction (ERC-4337)
Account abstraction (ERC-4337) transforms Ethereum wallets from simple key-pair accounts into programmable smart contract wallets — enabling institutional-grade features like multi-signature approval, automated compliance rules, and social recovery without changing the base Ethereum protocol.
Multi-Party Computation (MPC) for Custody
Multi-Party Computation (MPC) is a cryptographic technique that splits a private key into shares distributed across multiple parties, enabling institutional-grade digital asset custody without any single point of key compromise — the dominant security architecture for regulated digital asset custodians.
Bank Custody vs Crypto-Native Custody: Institutional Options Compared
BNY Mellon, State Street, and Citibank now offer digital asset custody. Anchorage, BitGo, and Coinbase Prime offer crypto-native custody. The difference: regulatory comfort, insurance limits, DeFi integration, and cold storage architecture.