Pluggable Backup Services for BRC-140 Share Vaults
If you want a backup copy of a wallet's secret key material held outside the wallet, there has never been a common way for different storage providers to speak the same language. Without it, a wallet app would have to hand-roll a custom recovery API for every provider, and users would end up trusting a single company with their entire recovery path. This makes it possible to spread recovery pieces across independent services that all understand the same request and response shapes.