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Every time you take a card payment, someone else holds your money first. A processor skims a cut, settles in days, and can freeze or close your account whenever it decides. Convenience, but also permission. I built an alternative. And it goes beyond just taking payments. Plaza: a Bitcoin point of sale that runs on Nostr and Lightning. Create an invoice. Your customer pays over Lightning with a quick scan or tap. The sats land straight in your own wallet. A signed receipt is published to Nostr. No processor ever touches the money. Your keys. Your funds. Your identity. Sovereign by Design πŸ”‘ Noncustodial: payments settle to your own wallet over Nostr Wallet Connect. Plaza never holds your sats. ⚑ Zero fees, forever: no processor cut, no per sale skim. It is written into Plaza’s founding documents. 🟣 Identity you own: your merchant profile, relays, and storefront are Nostr events you can take anywhere. 🧾 Verifiable receipts: every receipt is Schnorr signed and stored on Blossom. Anyone can verify it. πŸ—ΊοΈ Open discovery: merchants appear on a shared map through BTCMap. No gatekept directory, no pay to rank. πŸ”“ No backdoor: every protocol is open and transparent. Nothing hidden, nothing to trust blindly. Plaza is live today: πŸ“± Android: on Zapstore now, signed and verifiable, no gatekeeper. Google Play in review. 🍎 iOS: live on the App Store. https://apps.apple.com/us/app/plaza-btc/id6760211345 πŸ“‹ Whitepaper: published CC0, its SHA256 hash anchored on GitHub, Archive.org, and Nostr. Beyond one shop Every Plaza merchant is a node in a Bitcoin economy that does not ask permission. A customer pays, the sats move straight to the merchant, and the receipt lives on open infrastructure both sides can verify. No processor deciding who gets to transact. That is the whole point. Everything is free. If Plaza earns its place in your business, you can zap or support at plazabtc.com Live now on Zapstore. Zero fees forever. Your money, your keys, your plaza. Created with love in Oakland, California.
Do you want to custody your own merchant payments or let Square do it? Plaza BTC live on the ios App Store Android app coming soon plazabtc.com
Building Plaza β€” sovereign Bitcoin commerce for merchants and customers. Zero fees forever. Non-custodial. Your keys, your money, your identity. Merchants: Accept Bitcoin Lightning payments. Connect any wallet β€” NWC, Lightning Address, or self-hosted node. Full catalog with modifiers, inventory tracking, Schnorr-signed receipts on Blossom. Customers: Discover Bitcoin merchants near you on the map. Pay with Lightning. Looking for founding merchants to test the beta on ios. TestFlight: plazabtc.com #plaza #bitcoin #nostr #lightning #discovery
"Plaza: Novel Methods for Offline Bitcoin Commerce, Mesh Payment Relay, and Agent-Native Vending on Open Protocols" Author: Alejandro Diaz, Plaza (plazabtc.com) Date: February 22, 2026 PDF SHA-256: db7670854ace4efe260319deeaeccb7b7c86829f387cac84f31a64a389393cb0 Three innovations disclosed as prior art: (1) Mesh-relayed Cashu ecash payments via ESP-NOW/BLE with autonomous supply chain settlement β€” offline Bitcoin commerce across multiple hops, merchant-to-supplier settlement without banking infrastructure (2) BLE beacon-driven merchant discovery with offline NFC payment completion β€” full discovery-to-payment flow with no internet on either device (3) Agent-native vending machines as sovereign Nostr participants β€” machines with their own keypair, publishing inventory, accepting orders, processing payments via Cashu, Lightning, and zaps All innovations placed in the public domain. No party may obtain exclusive patent rights over these methods. GitHub: Archive.org: #bitcoin #nostr #cashu #lightning #plaza #defensivepublication #priorart
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