Introduction: Between Self-Sovereignty and Safety NetsIn crypto, one phrase defines the ethos of Web3: “**Not your keys, not your coins.”**Self-custody represents freedom, sovereignty, and resistance against centralized control. But with freedom comes fragility. Every year, countless users lose access to their assets due to misplaced hardware wallets or forgotten recovery phrases. Billions in BTC and ETH remain locked forever — not hacked, but lost in the abyss of forgotten keys. This creates...