In this episode, Calle introduces Numopay, an open-source Bitcoin payment terminal that enables tap-to-pay experiences similar to fiat systems. We explore its technical foundations, privacy features, future developments, and the broader ecosystem of Bitcoin payment solutions.Takeaways:🔸Numopay's open-source payment terminal🔸Tap to pay Bitcoin using NFC and QR codes🔸Privacy features of Cashu’s eCash system🔸Auto withdrawal to Lightning addresses for security🔸Future developments including BIP321 and integrationsTimestamps:(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 Cashu systems today? (30:48) - Privacy in Bitcoin(34:34) - Future of Bitcoin development with AI(42:06) - Closing thoughtsLinks: https://x.com/callebtc https://x.com/NumoPayApp https://x.com/NumoPayApp/status/2026334747991916634 Stephan Livera links:Follow me on X: @stephanliveraSubscribe to the podcastSubscribe to Substack