We can never really know. That's the beauty of a decentralised system... no central place to find everything... and why should everyone's personal transactions be there for everyone to see?

The ledger isn't for making everyone's payments public and auditable, it is for making sure there is no inflation bug.

We don't validate double spends for you, we do it to ensure the 21M cap, we don't balance inputs outputs and fees to track payments, we do it to protect the 21M cap.

We do make the blocks immutable for you though. A system where the cap is always preserved but no one can guarantee a transfer of funds is forever is not very useful. 🤷