alejandroalejandroalejandro

https://apps.apple.com/us/app/plaza-btc/id6760211345

Public Key

npub12y57xkqu736qx5xdqpmpvx8cnr366avkvyw6kjankuu6ejwpvrqqqefgr4

Profile Code

nprofile1qqs9z20rtqw0gaqr2rxsqaskrruf3cadwktxz8dtfwemwwdve8qkpsqpz3mhxue69uhhyetvv9ujuerpd46hxtnfduqs6amnwvaz7tmwdaejumr0ds3gcyj7

Publishing to

nostr.mom

relay.damus.io

nos.lol

Author Public Key

npub12y57xkqu736qx5xdqpmpvx8cnr366avkvyw6kjankuu6ejwpvrqqqefgr4

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Last Notes

2026-05-14 17:27:00 GMT

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

2026-05-08 15:44:04 GMT

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@nprofile…f95z
https://plazabtc.com/
also live on the ios app store - https://apps.apple.com/us/app/plaza-btc/id6760211345
android app coming soon
hardware terminal coming soon
sovereign noncustodial POS is a hell yeah in my book
zero fees forever

2026-05-01 18:09:50 GMT

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I created the best version of this. So far it is an ios app. android app coming soon. hardware terminal coming soon.
It’s called Plaza BTC on the ios app store

2026-05-01 18:08:33 GMT

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i create the ios app that does this too. It’s called Plaza BTC.
Android app coming soon. Hardware terminal coming soon.
It’s all zero fees forever and noncustodial. It’s the first of its kind.

2026-05-01 17:58:24 GMT

Plaza BTC is live on the ios app store!!!!

2026-05-01 17:40:36 GMT

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look at square. they are a custodial point of sale and are a middle man and take fees from transactions.
Plaza BTC is not. It is not a money transmitter either. when a customer sends funds to a merchant to pay for a meal, Plaza BTC does not touch the funds at all.

2026-05-01 17:38:19 GMT

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@nprofile…n5fw @nprofile…8r4g my physical hardware terminal will work offliine and accept cashu. my dream is for this to be used in rural areas. whether online or offline. with lightning or with cashu. lets collaborate

2026-05-01 17:31:25 GMT

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hey man, thanks for sharing. i actually just built the answer to this. it is a noncustodial POS built on bitcoin, lightning, and nostr. it's called Plaza BTC. it's live on the ios app store right now. android version coming soon. hardware terminal coming soon.
with the Plaza BTC app it's simple. you download the app and you're in customer mode. you see a map of the world around you and you could businesses around that accept bitcoin. this is customer mode and you could sign in with your Npub or create a new one on the app as customer. it works like the yelp app. you could find bitcoin businesses around you and pay from the app if you connect your wallet, if you wanted to. you could also save your favorite bitcoin businesses to your favorites list. you also have a history of purchases you made if you connected your wallet and paid the merchant in person.
in the settings tab, you could become a merchant and enter merchant mode where you'll find a full point of sale, where you could charge customers. you could also create a catalog of items and customize it too. that way you just press a button for "coffee" and then "medium" or "large" and "extra shot" and then you could give the customer the option to tip you. and then lastly, you scan a qr code or tap to pay. the customer then sees a final qr code at the success screen which is their receipt. you also have a copy of this in your sales tab on the app in merchant mode. there is also an analytics tab. as a merchant, you could just sign in with your npub or create a new one, publish your location on the Plaza Map, which is also connected with BTC Map. You could also connect your lightning wallet, connect your wallet via NWC, or self host.
This is the first sovereign and noncustodial Bitcoin/lightning POS. There are zero fees forever. This is not a promotional run like Square where they are custodial and have zero fees until the end of this year.
Let me know what you think and what you would like to see and I will work on it.
Android app coming soon. Physical hardware terminal coming soon.
@nprofile…n5fw

2026-04-27 18:52:21 GMT

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yo! i built a noncustodial bitcoin Point of Sale. It’s called Plaza BTC. It’s all built on bitcoin, lightning, and nostr. It’s live on the ios app store. Android is coming soon.

2026-04-14 16:25:34 GMT

no merchant should sell through a platform another man can shut off

2026-04-13 16:46:17 GMT

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or maybe just sovereign commerce? i built the first sovereign commerce POS that is fully noncustodial . It’s built on lightning and nostr. literally just connect your wallet and that’s it. accept payments. it’s out on the ios app store now: https://apps.apple.com/us/app/plaza-btc/id6760211345

2026-04-13 16:41:51 GMT

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well, i built the app for this. it’s a sovereign non custodial bitcoin POS. It’s called Plaza BTC. It’s built on lightning & nostr. it’s finally out on the ios appstore: https://apps.apple.com/us/app/plaza-btc/id6760211345

2026-04-03 22:05:56 GMT

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this is why I built plaza. its sovereign commerce infrastructure. zero fees forever for customers and merchants. Merchants now can turn their iPhone or iPad into a full pos and accept bitcoin payments that go straight to their wallet via the plaza app. Plaza is non custodial and never holds anyone's key and does not touch anyone's money, it is purely business tools and create invoices. you could also sign in with your nsec or create a new one on the app. customers could discover bitcoin merchants on the plaza map as well and also connect their wallet to the app to pay merchants via lightning and nwc.
plaza is fully sovereign and enables customers and merchants to be fully sovereign. customers and merchants own their identity, data, keys, money, and business.
plaza exists because publicly traded companies that enable lightning/bitcoin payments can never fully commit to a protocol that eliminates its fee revenue such as fiat processing fees and being the custodian to merchant's funds.
They will never cannibalize that. Plaza has no such conflict. Bitcoin is the foundation, not a feature.
shoutout @nprofile…w2ua

2026-04-03 19:36:15 GMT

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*** ahhhh so many typos , here we go:
yo dude, i built a sovereign commerce infrastructure interface, it’s built on nostr and bitcoin. You could sign in with your nsec or create a new one right on the app. You could publish it right on to @nprofile…mtnn and nostr too. You could become discoverable as a merchant on the plaza map which in turn also uses @nprofile…xe22 .
Plaza turns your phone into a whole POS. Plaza is where bitcoin customers and bitcoin merchants meet.
@nprofile…0x9t @nprofile…rqlt let me know your thoughts. maybe plaza could be used in the @nprofile…0lhs and farmers markets out there ? 🤙🏽
zero fees forever
Plaza BTC

2026-04-03 19:33:08 GMT

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yo dude, i built a sovereign commerce infrastructure interface, it’s built on nostr and bitcoin. You could sign with your nsec or create a new one right on the app. You could publish it right on to @nprofile…mtnn too. You could become disable as a merchant on the plaza map which in turn also uses @nprofile…xe22 . Plaza turns your phone into a whole POS. Plaza is where bitcoin customers and bitcoin merchants meet.
@nprofile…0x9t @nprofile…rqlt let me know your thoughts. maybe plaza could be used in the @nprofile…0lhs and farmers markets out there ? 🤙🏽
Plaza BTC
https://blossom.primal.net/6017d83589082db141fe6ffb76d1f767d45207b51a90d42b4af569ae7185aebe.png

2026-04-03 19:24:58 GMT

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2026-04-03 19:24:42 GMT

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Hell yeah

2026-04-03 18:33:25 GMT

every goliath meets it's david
your money. your keys. your business. your data.
plazabtc.com
https://blossom.primal.net/e7525592e4aaef11c6a7ee721a9a7d9a04bd8cc53e4ac9de2a98abcb6bab0c8c.png

2026-04-03 18:00:25 GMT

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2026-04-03 15:53:28 GMT

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Hey! I could see you on the Plaza Map, which integrates @nprofile…xe22 . Customers can discover you on the Plaza App and pay. Merchants like you could use the Plaza POS for sale like this!
The best part is no fees for the customer or the merchant.
PV
@nprofile…srdt
@nprofile…d8vx
@nprofile…ydjs
@nprofile…6why
https://blossom.primal.net/ccd5431f50d476f2cab0237920f16cc28b9f83718e02792f44fb3d38d3a67b1d.png
https://blossom.primal.net/83772a3e0bb4986a22119b76212f235e5678fda2ca63d37217b08c93bc6594b8.png

2026-04-03 14:58:35 GMT

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100%
#nevent1q…l8gd

2026-04-03 14:42:11 GMT

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I built the first sovereign interface/infrastructure for commerce on bitcoin and nostr. zero fees forever. payments at the speed of light. bitcoin customers and bitcoin merchants meet at Plaza. Check it out and let me know what you think. I built Plaza for businesses like yours ! hope to get a wine from you soon, your story inspired me!! Thank god for bitcoin and nostr

2026-04-03 14:36:14 GMT

GM #nostr

2026-04-03 05:56:19 GMT

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I learned about sovereign commerce infrastructure by building it on bitcoin and nostr

2026-04-03 05:52:53 GMT

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congrats! love your podcast. this is goated

2026-04-03 05:50:03 GMT

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this is so fucking goated

2026-04-03 05:40:47 GMT

Building Plaza — 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 — 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: https://testflight.apple.com/join/zawxs57P
plazabtc.com
#plaza #bitcoin #nostr #lightning #discovery

2026-04-03 05:37:47 GMT

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hahah I also used to having a trading bot for #experimental purposes

2026-04-03 05:36:19 GMT

YO! I'm Alejandro from Oakland. Building sovereign commerce infrastructure on Bitcoin and Nostr.
Believer in things built to last , whether that's software, bicycles, or economic freedom.
Glad to be here.
#nostr #pv #gn #bitcoin #commerce #sovereign

2026-04-03 04:43:59 GMT

2026-02-26 14:38:10 GMT

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done!

2026-02-22 22:06:10 GMT

"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 — offline Bitcoin commerce across multiple hops,
merchant-to-supplier settlement without banking infrastructure
(2) BLE beacon-driven merchant discovery with offline NFC payment
completion — full discovery-to-payment flow with no internet on either device
(3) Agent-native vending machines as sovereign Nostr participants —
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: https://github.com/alejandroalejandroalejandrobit/plaza-whitepaper
Archive.org: https://archive.org/details/plaza-whitepaper
#bitcoin #nostr #cashu #lightning #plaza #defensivepublication #priorart