Nostr Web Client

Replying to

calle

Tap-to-pay with CashuBTC ecash — for bitcoin.

Fiat credit cards nailed the UX: fast, offline, works anywhere.

I always wanted that for Bitcoin.

Now it’s open-source. Private. Instant. Beep, done.

In the video: two Cashu wallets for bitcoin.

Left: nostr:npub1kvaln6tm0re4d99q9e4ma788wpvnw0jzkz595cljtfgwhldd75xsj9tkzv (PoS)

Right: cashu.me (payer)

Ecash is sent directly via NFC — no internet, no delay. Beep, boop.

Ecash is a bearer token — the money lives on your device, not on a server. That’s why it pairs so well with NFC. Pick an amount, tap to send. No talking to servers. No syncing. Just push it over. The payment is pretty much instant. A PoS can accept ecash from any mint and receive payments via Lightning.

Still early days, but we’re experimenting. Card-to-phone works, but phone-to-phone? That’s the real killer use case.

Apple famously locks down the iPhone’s NFC chip — good monopolist.

F*k that. I found a workaround.

As long as one phone (ideally the PoS) is Android, you can send data both ways between iPhone and Android.

(You don’t really own your iPhone.)

Peace!

https://m.primal.net/PnpP.mp4

mobiusmoe 9mo ago 💬 4

When I think of cashu.me, my core vibrates with excitement, like when bitcoin finally clicked in the middle of the night.

I find myself thinking of setting up a small business in my local area selling something below cost, but only if it is payable in btc, just to spread the understanding.

npub12rv5lskctqxxs2c8rf2zlzc7xx3qpvzs3w4etgemauy9thegr43sf485vg is an artist, a renaissance man, and is laying down an important plank in the foundation of a future world of abundance ...

Thank you npub12rv5lskctqxxs2c8rf2zlzc7xx3qpvzs3w4etgemauy9thegr43sf485vg ...

nevent1qvzqqqqqqypzq5xeflpdskqvdq4swxj59793uvdzqzc9pzatjk3nhmcg2h0js8trqyt8wumn8ghj7etyv4hzumn0wd68ytnvv9hxgtcpzemhxue69uhks6tnwshxummnw3ezumrpdejz7qpqsmm5ulx6gptuhv9627kx72zyx494ha6sdqjv8mwrcmdkm8mrkq4s4mfm3u

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Discussion

erik 9mo ago

What are some ways you think cashu.me could be improved? Any thing that you find frustrating about it when you use it?

mobiusmoe 9mo ago

No major frustrations with the ux.

If you are asking, a small nice-to-have would be an [add] button next to mints, rather than having to copy and paste the url.

My 15,000 sats did disappear from the npub1kvaln6tm0re4d99q9e4ma788wpvnw0jzkz595cljtfgwhldd75xsj9tkzv mint I joined, but I consider the 15,000 sats to be a donation to the tech build out, which I am cool with - Minibits were very clear it was experimental.

See the last transaction being a deposit but balance is 0 sats.

Minibits 9mo ago

Hi that should not have happened, mint is operational and it can't make selective balance dissapear. Very likely a wallet state issue.

Do not let it be, use your seed phrase to recover the balance - at least you'll learn how to do that and hopefully will feel safer with ecash afterwards.