It makes sense for the banks to do this, because they have different requirements.<p>Bitcoin is great because it works with an unknown set of untrusted entities, and there&#x27;s no counterparty risk because the ledger <i>is</i> the currency.<p>Banks have a known set of semi-trusted entities, and want to track off-chain assets. They&#x27;ll still have counterparty risk, but if they see a way to use chained blocks and something like Byzantine Paxos to speed up interbank settlement, more power to &#x27;em.