**Post by jay.bsky.team, reply to jay.bsky.team**
using a tiny fingerprint to represent a lot of data is a really useful tool!
blockchains are basically just big collections of these fingerprints.
it’s not exclusive to blockchains though. we use a similar tool to make user data portable in ATP, without the “mining for coins” part of blockchains
https://staging.bsky.app/profile/did:plc:oky5czdrnfjpqslsw2a5iclo/post/3jun6qcq3kn2v