Earlier quoted context omitted.
Bitcoin currently consumes roughly the energy used to power one quarter of CANADA. I'm optimistic that there is a better way to store a ledger as you describe. Perhaps a database?
Not better in terms of Bitcoin's goals of decentralization and censorship resistance...
We've done this with a network that can process 400k transactions per day (at $20/transaction in fees), as compared to visa, which does 150 million per day.
Surely, we can do better?