Has anyone had a bitcoin debit card that just works? Every story I hear goes the same way: the card ships, the top-up works, and then it gets declined at the register. Starting to think the card form factor is the problem, and the fix is converting sats into whatever prepaid system people already use in each country. Would love to be proven wrong though 🤔

Have you tried agentic payment experience? ⚡ View quoted note →

When you want to actually spend bitcoin where you live, what do you do? Merchant maps, gift cards, a prepaid Visa that gets declined half the time? Just wondering how people handle this in your country 🤔

#UseBitcoin ⚡ View quoted note →

Which one's your favorite? :-)

"Where can I spend bitcoin in Japan?" We see this question on Nostr every week. Honest answer: you don't need to find a shop that accepts BTC. You can turn bitcoins into Japanese gift codes (au PAY, DMM, BitCash, QUO…) in about a minute. No account, no KYC, no bank. Just a Lightning invoice. That's what we built usebitcoin.jp for. Starting today we're running an experiment. Buy anything, DM us your order ID and what you used it for, and we'll zap 2% back in bitcoins. Payouts go out in a batch, roughly one month after we receive your DM. Every DM gets read by a human and your use case can decide what we build next.🚀🚀🚀 ⚠️ DM only, please and use **private DMs (NIP-17)**; Damus, Amethyst, 0xchat all support them. Legacy DMs (NIP-04) leak who-messaged-whom and are easier to attack, so we can't read or reply to those. And don't put your order ID in a public zap comment — everything on Nostr is public, including zap notes. #usebitcoin #JBI #nichibi

Real-world Bitcoin inbound-payment experiment from Japan 🇯🇵 A guesthouse in Shiga just put up a poster offering CashApp → Bitcoin payments for food & drinks on-site — aimed at foreign guests.👀 Source (JP):

X (formerly Twitter)

丸の肉OL@5/30,31 JRRF2026 G-211 (@icchinakka) on X

【インバウンド向け決済の新手法】 滋賀の友人が経営しているゲストハウスで、ハウス内での飲食物の購入�...

This one aged well 😌 Finally you can buy a BitCash code with Lightning through our sites https://usebitcoin.jp, then spend it on DLsite. No account, no card, no KYC🚀 And the other day, we open-sourced an agent skill & MCP that runs the whole flow too, if you would like⚡: github.com/cachet-jp/ln-agent-poc-v2 View quoted note →

It's officially live!🚀 Just open-sourced an MCP agent that buys real-world gift cards, eSIMs & mobile top-ups with Cashu ecash over Lightning. ⚡ No LN node. No signup — a shared key ships in the repo, so you git clone and buy in ~2 min. Supports UseBitcoin & Bitrefill⚡ MIT.

GitHub

GitHub - cachet-jp/ln-agent-poc-v2: MCP server & Claude Code skills to buy gift cards, eSIMs & mobile top-ups with Bitcoin — paid from Cashu ecash over Lightning.

MCP server & Claude Code skills to buy gift cards, eSIMs & mobile top-ups with Bitcoin — paid from Cashu ecash over Lightning. - cachet-jp/ln-age...

#Nostr #Bitcoin #Lightning #Cashu #ecash

Finally got it done — we're now NIP-05 verified on Nostr, and our Lightning Address is live! Zap us⚡ View quoted note →

Speaking of privacy in Japan, Atsuko Muraki, a Japanese government official, spent 164 days jailed for a fraud she didn't commit — a case built on evidence a prosecutor literally falsified (he altered a floppy disk's timestamp). She was cleared only because a journalist caught the tampering. ~99% conviction rate. "Hostage justice." The death penalty. In a system like that, your testimony can be turned into your crime. Silence is a right. Privacy is a weapon to protect yourself. This is why we build. #privacy #freedomtech #nostr View quoted note →

Here's what we've actually been building — one by one. 🧵👇 Different products, one throughline: take money, payments, and knowledge back from the gatekeepers: View quoted note →

Hello Nostr world! We're Japan Bitcoin Industry (JBI), Japan's only Bitcoin-focused company. Japan still runs on cash, KYC, and platforms that rent you your own money — so we're building the way out, from Tokyo. We came to Nostr for the obvious reason: it's the one place built so no one can be the single point of failure. We'd rather build here, in the open, with the people who already get it — and we'd love to take it further: study sessions, builder meetups, hands-on workshops. In Tokyo or over a relay, our door is open. Come build with us. #bitcoin #lightning #nostr #cashu #freedomtech #japan #introductions