It's a cool project but I wouldn't use a blockchain for this. Federation is the new hotness, and it's way better, for reasons. So yes, I won't use this until they allow me to federate my browser tabs.
You just need it to send an email on every update with the full db contents and then set up another browser elsewhere to read the emails and update their tabs and you'll have state of the art federated database replication.
I’m can’t believe that nobody said this but I can’t run this bare metal on my raspberry pi pico. It not being a single header C89 with no dependencies to the stdlib makes it a hard pass for me