Pluggable Backup Services for BRC-140 Share Vaults
If you lose your wallet's key, recovery usually depends on either writing down a mnemonic yourself or trusting one company to hold the whole thing, which is a single point of failure. There was no shared way for a wallet to spread pieces of a recovery secret across several independent backup providers so that no single provider, or even a couple of colluding ones, could reconstruct your key alone. This makes it possible to enroll with multiple backup services interchangeably and only get your key back once you have gathered enough pieces from enough of them.