Coinbase Unveils Open Source On-Chain Payments Protocol to Offer Instant Settlement for Merchants San Francisco-based cryptocurrency exchange Coinbase has introduced an open-source On-Chain Payments Protocol to its Coinbase Commerce product. The new protocol aims to enhance the payment experience for merchants and customers by providing instant settlement, low fees, and broad asset support, the exchange said in a Thursday announcement. Coinbase Commerce is a platform that helps merchants anywhe...