Validating public Blockchains is a source of revenue for banks, and adds a layer of trust to public chains. There's a concept among banks that they should never validate anything except their own counterparties transaction. This is a misreading of the concept. It confuses Blockchain validation for payments authentication in the existing banking system. When in reality that happens a layer above the Blockchain in public chains. Transactions by the time they reach a chain are either directly from a customer (self custody) or from another institution. Networks like SWIFT, Notebene, and Ubyx enable trust lines to pre check transactions before sending them to a chain. Any compliance obligations can be handled post transaction by the issuer of the stablecoins (which is the standard GENIUS and MiCA have evolved towards). The chain itself is then a public utility. "Validation" is the act of helping reconcile all of the transactions. This is what reduces the operational burden for all parties involved and delivers programmable, 24/7, global payments. And that needs to be resilient, bank grade infrastructure that operates 24/7. Banks are doing this today but not getting paid for it. Validation is their path to monetize the type of vendor