This idea of having 20 years of linked entries in an append-only distributed log is very powerful, and is the basis for the "idchains" system discussed here:

https://www.youtube.com/watch?v=xZC98s4paYY

It controversially opts to use faces rather than fingerprints, but faces are easier for humans to verify, especially without special hardware.

I don't think the video describes a complete system, but the idea has merit and I wish it had been developed more.