I've been working on a proposal for a new way to do trustless, end-to-end encrypted backups of hot wallets for Cove using Passkeys.
I will work with @tank to turn this initial proposal into a proper spec.
Please give it look and give us any feedback you have
PraveenPerera.com
A New Approach to Universal Bitcoin Wallet Backup with Passkeys and PRF • Praveen Perera's Blog
A proposal for cross-platform Bitcoin wallet backup using WebAuthn PRF, no passwords, no server trust