The US Patent and Trademark Office has made public a patent application from JP for a system that uses blockchain to keep track of cross-border payments sent between financial institutions.
In the application, J.P. Morgan notes that cross-border payments require “a number of messages” that must be sent between the bank and clearing houses involved in the transaction. This often results in delays and a restricted availability to the funds. Rather, the transaction on the blockchain would eliminate high costs, provide a system for accurately logging the transactions, and process payments in real time with a verifiably true audit trail.
http://amp.timeinc.net/fortune/2018/05/04/jpmorgan-blockhain-patent