I'm frustrating by try to recover some very old wallets (password long lost). Hence:
"Proof of Stack of Amnesia Wallets"
So you stack your wallet files which passwords have been forgotten. Then we have a decentralized mechanism in place for try to recover these "stacks". The chance of recovery will always greater than 0. Then it'll have a mechanism for rewarding computing resources providers for recovering these "stacks" which came form a proportion of recovered stacks.
There'll be a (quantum based or whatever) mechanism to prevent user to stacking "unauthorized" wallets into this network. Somewhat like shared wallets? I'm not yet dig into the details.
"The biggest enemy of the long gone ancient digitized civilization is amnesia." - Anonymous anthropologist from 6018
OK, I guess invest on nootropics could be more practical than this.