Anyone can join a Bitcoin node with a computer and audit the entire Bitcoin ledger.

This is something no other currency system can do:

The ledger of the US dollar is at the Federal Reserve, requiring trust in the Federal Reserve.

The ledger of banks is at the banks, requiring trust in the banks.

Gold has no ledger, requiring trust in third-party vaults and statistics.

For any asset in traditional finance, you have to trust institutions or regulators.

Only Bitcoin: anyone can verify, and you do not need to trust anyone.