I’d add on the “why not use a database” - in general you should always prefer a database to a blockchain/DLT, all else being equal. The typical case where all

I’d add on the “why not use a database” - in general you should always prefer a database to a blockchain/DLT, all else being equal. The typical case where all is not equal in finance is where currently parties transact via a trusted intermediary like a clearinghouse (who might take a 1% fee, say), and a startup wants to allow parties to transact directly, thereby capturing the fee as upside. Large financial institutions don’t tend to trust small startups that might implode any month, but they can (sometimes, it seems) be persuaded to trust a distributed ledger.