Cashu introduces physical tap-to-pay card for offline Bitcoin ecash payments

An experimental NFC card stores Bitcoin-backed ecash on a chip, letting merchants accept a tap without internet and settle later Cashu wants your Bitcoin to work like a transit card. The open-source ecash protocol has introduced an experimental physical tap-to-pay card that lets users make offline payments with Bitcoin-backed ecash. The idea targets one of the oldest complaints about paying with Bitcoin at a shop counter. Lightning payments are fast, but both sides usually need to be online. Cashu’s card is built for the moment when the internet isn’t. Cashu is a Chaumian ecash protocol designed for Bitcoin and the Lightning Network. Think of it as digital cash tokens issued by a “mint,” which acts a bit like a bank vault holding the underlying Bitcoin.

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