Nostr Web Client

Introducing Boardwalk Cash - the first dollar-based Cashu wallet built on top of #bitcoin and connected to #nostr.

We now have stablecash on bitcoin - completely interoperable with the lightning network.

Share your lightning address or invoice to receive dollars. Paste a lightning address or invoice to send dollars.

Boardwalk Cash connects to any nostr client via NWC. Zap dollars on nostr apps like nostr:npub12vkcxr0luzwp8e673v29eqjhrr7p9vqq8asav85swaepclllj09sylpugg or on Discord with our Zap Bot.

This is a very early product and there are not many public mints, so use at your own risk. Yet, we’re excited to show some of what ecash and nostr can offer for advancing #bitcoin payments.

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Discussion

StarBuilder 1y ago

claim $0.10 by clicking this link...

https://boardwalkcash.com/wallet?token=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

High Heel King 1y ago

$0.02 for this one :)

https://boardwalkcash.com/wallet?token=cashuAeyJ0b2tlbiI6W3sicHJvb2ZzIjpbeyJpZCI6IjAwZjY4NGU4YTFiYTg2OTYiLCJhbW91bnQiOjIsInNlY3JldCI6IjgxYmY5YmE0Y2Y4OGNiN2MxZjcyYmQ4ZjhlOTc1MzgyOTgxNzYyNjBiMzM3YThiODVmNmFjZmRkYTJlYWFiMDAiLCJDIjoiMDMxNjgyYzIwNjBkNDVlODE3NGY4ZWEzMmI1NDkyNjcwYzI4OTQ4YjU5NDJlY2Q1MWZmMGYzM2EyN2MzNDU0OGM3In1dLCJtaW50IjoiaHR0cHM6Ly9zdGFibGVudXQudW1pbnQuY2FzaCJ9XSwidW5pdCI6InVzZCJ9

calle 1y ago

legend

calle 1y ago

incredible work, congratulations on the launch!

Erik 1y ago

True If Big!!! 🎉

nostr:npub1aeh2zw4elewy5682lxc6xnlqzjnxksq303gwu2npfaxd49vmde6qcq4nwxnostr:nostr:npub18ams6ewn5aj2n3wt2qawzglx9mr4nzksxhvrdc4gzrecw7n5tvjqctp424 nostr:npub1key55ax33gkl50uqemvl4khrtqrhzm7wzpc7fhseutt5ddkcwcrqgxlt3h

Shawn 1y ago

Amazing. Good sir, no mints show with the USD filter.

https://bitcoinmints.com/?show=cashu&units=usd

bob 1y ago

Try refreshing the browser once. We're updating it now. He's the Mint URL of the current public USD mint:

https://stablenut.umint.cash

Shawn 1y ago

Smooth as 🧈

kiwi 1y ago

Can we please stop calling fiat stable?

Pepe NOSTRos 1y ago

not yet. am still accumulating. dxy is gonna tumble for a decade soon so just dont rush it pl pls pls.

Ľḭṿḙśƫṟãɖãṁṹṧ💫#RunCoreV30 1y ago 💬 1

Cuckbucks it is

kiwi 1y ago

I like slave credits

Brian 1y ago

Fiat coins

tom 1y ago

is this done with some sort of a short like stablesats?

Cerebrum 1y ago

Yikes I did a send without saving the token, money gone? Haha

SUPERMAX 1y ago

How to get mint to support USD?

SUPERMAX 1y ago

Which NUT supports USD?

gudnuf 1y ago

The Cashu v1 spec supports any unit and mint/melt method. Can be found in the mint/melt settings of the mint ie. https://github.com/cashubtc/nuts/blob/main/04.md#settings

SUPERMAX 1y ago

Thanks for sharing

SUPERMAX 1y ago 💬 1

I guess my specific question is;

What is the exact line of code(s) do I need to enter to support USD?

Trying to do this for our own mints

gudnuf 1y ago

1. Add a new active keyset with unit ‘usd’

2. Convert amount in mint quote request to sats based on current exchange rate, then create invoice for that sat amount.

3. Convert sat from invoice to usd in melt quote request and return usd amount needed to pay the invoice.

Happy to help if you want to get on a call

SUPERMAX 1y ago

Excellent thank you! I'll take you up on that for sure!

Meridian 1y ago

Is the idea that mints will hold physical USD, to back the ecash?

Currency of Distrust 1y ago

How do I NWC back to Primal? Works great, though!

Derek Ross 1y ago

very cool.

arkinox 1y ago

🤯 My brain can't compute what stablecash on bitcoin even means. How is it possible? Is there a technical deepdive I can watch/listen to?

fysx 1y ago

Found this: https://github.com/toneloc/stable-channels. Looks like a reasonable explanation.

arkinox 1y ago 💬 1

404?

fysx 1y ago

Hmm… not 404 for me. The github links to a thread of Twitter if you want to try there: https://x.com/tonklaus/status/1729567459579945017

calle 1y ago

here

curt finch 1y ago

I look forward to a day when this is super easy to use for my grandmother

Theo Hague 1y ago

That's nuts

elsat 1y ago

🍿

negr0 1y ago

nostr:npub1cd0l3s6qgj0s6690rtkys39mgj5upwxpm4856nhmce0pyqu6xj9qh7xlvx estoy probando lo

Pude recibir, pero no puedo enviar

nostr:nevent1qqs0rk7rltsx45jwyls53fs2dcla5vgcwuh7p4zsx7lx9yjf038thecpz3mhxue69uhhyetvv9ujuerpd46hxtnfdupzps6llrp5q3ylp4527xhvfpztk39fczuvrh20f480h3j7zgpe5dy2qvzqqqqqqywqgydh

Joe⚡ 1y ago

LFG 🔥

47 1y ago

fucking gangsta 👏👏👏

Thank you, Sir. 1y ago

Sheesh. Just like that.

Haha 1y ago

👀 👀

593abf04... 1y ago

Fascinating! How difficult would it be to either add other national currencies (say the Mexican peso or the Japanese yen)?

As someone else said in the comments, they would want their grandmother to be able to use something like this, so having sats dominated in the local currency would make that way easier.

UNCLE ROCKSTAR 1y ago

https://www.youtube.com/watch?v=MpUWrl3-mc8

Jones 1y ago

Just a note the say that won work XD

Its just another trap

https://void.cat/d/65r6yM2wMiyJNePPexbaYc.webp

pailakapo 1y ago

This sounds like a private, cheap way to short Bitcoin

Charlie Crown 1y ago

The Zap Bot isn’t working :(

The Yuri 10mo ago

Is the BTC sent to mints overcollateralized to issue new USD tokens? Or does an actual exchange happen (with the mint probably needing to cover the trade elsewhere)?