> The block chain is, and always was, an extremely inconvenient database.

Care to elaborate? I have been using Bitcoin now 10+ to store my wealth and make payments, and it has been very convenient - not much time needed to use it, and I think I've gotten plenty of value for my time-investment.

What kind of database would you recommend to make it more convenient? Maybe you can write a guide how to implement decentralized value transfer and storage system on top of PostgreSQL, so that the amount of tokens is limited to 21 Million, with similar security guarantees?