You can index on-chain data for any linked EVM smart contract, not only Fireblocks reference contracts.
What you can see
After you turn indexing on, Fireblocks shows transfer events, balances, and balance history for any address, including addresses that are not Fireblocks wallets. You can turn indexing on or off, and start a rescan, from the Console.
API
The API returns decoded logs, transfer events, balances, and total supply over time.
Learn more in Index any contract.