[spicybright]

I'm positive it's used in crypto, but there's nothing novel about append only logs. It just means you don't remove the old stuff.

To elaborate a bit, crypto is backed by tokens specifically to ensure integrity in a distributed network (on machines you don't own)

If you own the DB you don't need this.

[nivertech]

Of course you can pay for each new log entry using crypto tokens, but you don't have to.

You can use an open source version of AOL (Append-Only Log) SW for free, alternatively you can use a managed cloud version, but there you will have to pay with something called USD which is a social construct 1:1 pegged to a crypto-tokens like Tether USDT, MakerDAO DAI, and other so called "stablecoins" ;)