NumoPay: Tap-to-Pay Bitcoin with Calle | SLP728 @callebtc, Bitcoin developer, joins me to discuss his latest project, @NumoPayApp, an open-source, privacy-focused, Bitcoin payment terminal built for the future of tap-to-pay. (00:00) - Intro (00:38) - What is Numopay? (03:29) - Numopay’s UX, tap-to-pay & offline NFC payments (08:30) - Unified QR codes (BIP 321) (10:21) - Auto withdrawal to lightning address (13:51) - Evolution of Bitcoin payment infrastructure (20:08) - What is the future of Numopay? (22:47) - The Cashu ecosystem in 2026 (27:34) - Where should people be using @CashuBTC systems today? (30:48) - Privacy in Bitcoin (34:34) - Future of Bitcoin development with AI (42:06) - Closing thoughts