kelbie

Early @nprofile…c2gl had my own cashu-ts-based stateful wallet.
Then I realized it wasn’t as simple as I first thought.
@nprofile…umhn’s Coco became the foundation I needed: a real Cashu wallet toolkit from a seasoned Cashu veteran, so I could focus on UX.
Well deserved grant! 🥜
#nevent1q…ny3r

2026-06-23 13:37:10 UTC

It's pretty dumb that Nostr apps that rely on caching servers can just go offline if the server stops responding. For this reason I spent the last week making @nprofile…c2gl have fallbacks so as long as some relays are online you will continue to have some level of functionality but in the best case you get the caching server user experience.

2026-06-19 20:24:35 UTC

- reply

@nprofile…tf6v I hope you don't mind me using your post to demo 👀

2026-06-19 20:23:27 UTC

Another day of building the Nostr app I want to use.
Latest: in-post web view. Open any linked site without leaving the conversation.
Available in next release of @nprofile…c2gl
https://blossom.primal.net/1836c56b890a4093c654eb2c33aef07a0cb9744108667288a46eafb99ed6e797.mp4

2026-06-16 01:04:05 UTC

- reply

Right now I'm showing the lock icon when its p2pk but maybe that's not super relevant to the user, and the direction of payment is a better icon to show even if its already implied by the amount colour.

2026-06-16 01:03:44 UTC

Trying to bring the transactions feed to life by using Nostr as the social layer.
https://blossom.primal.net/2b5b7f639ebe3afd702928b446345cdaa332eb7b4bdd192b2e97830db248f3ce.png

2026-06-14 18:39:46 UTC

ask not what bitcoin can do for you—ask what you can do for bitcoin

2026-06-13 19:49:59 UTC

- reply

I'm working on making it so either the sender or receiver can be offline. And that the receiving wallet can properly signal which mints it will accept p2pk locked from via @nprofile…puz0 payment request.
The user doesn't even need to be aware any of this is happening.
#nevent1q…4eak

2026-06-12 23:33:08 UTC

- reply

the yield yields its own yield

2026-06-11 23:09:40 UTC

for me, ai movies are hard to watch now. they don't feel like sci-fi; they are just fiction.

2026-06-11 17:41:22 UTC

I think it's better for wallets to tell users which payment methods they can use, rather than making users pick for themselves.
The user's responsibility is to give the wallet the [amount] and [destination].
It's the wallet's job to solve the [method] and [transport].
When multiple options are viable, as is often the case with BIP-321, the wallet should recommend the best path based on expected fees and transaction speed.

2026-06-11 14:04:28 UTC

Android for @nprofile…c2gl might come sooner rather than later. It's less work than I thought it would be.

2026-06-10 22:15:22 UTC

Stay focused Kings.

2026-06-10 18:03:13 UTC

I’m running Expo on my home laptop through Expo Tunnel, so my phone can receive live reloads remotely. With Codex mobile app, I can prompt code changes from my phone as long as the laptop stays online.
Never going back.

2026-06-10 00:38:13 UTC

- reply

I've done a lot of traveling, and the only country that has asked (so far) for my fingerprint was USA.

2026-06-09 23:25:51 UTC

- reply

This is why I built @nprofile…7lp3! I had my own takes on how to build a good cashu wallet and nostr client.
You can just do things if you aren’t satisfied with the status quo.

2026-06-07 13:39:40 UTC

- reply

Using a GraphQL Nostr Aggregator to prototype ideas quickly and then build optimized App Views for them once the idea has come together is such a great design loop.
#nevent1q…kl0c

2026-06-04 12:52:04 UTC

Me when someone starts talking about onchain zaps
https://blossom.primal.net/9121571763a17c2f9d334a1d285902a79ba8426c4809d45de0a9d66cf42e1fa6.mov

2026-06-03 20:20:20 UTC

GraphQL is awesome and if you don’t like it I’m sorry you are a backend developer

2026-06-02 16:12:07 UTC

https://blossom.primal.net/fdce51e003d00b36d451e6fccc6daa6b6a842dece6f22742b82927a69d0d86f4.jpg

2026-05-31 16:23:56 UTC

- reply

LFG 🚀

2026-05-31 11:42:03 UTC

- reply

We need better data aggregation in Nostr relays then Primal’s caching server wouldn’t be so necessary.
#nevent1q…p6f0

2026-05-29 15:10:22 UTC

offchain zaps > onchain zaps

2026-05-27 15:33:52 UTC

- reply

onchain zaps are a psyop
#nevent1q…zk6x

2026-05-16 19:50:32 UTC

Built loading skeletons for Nostr threads that don't jump around when content arrives. Measure each reply's real height, sort them so they fit the skeleton slots, then a shimmer pass masks any leftover shift.
https://blossom.primal.net/ca9c24c7de74f5425b1211fdafa84894080e0e563ddf62e5c05b0d4c38de782c.mp4

2026-04-28 22:09:11 UTC

Send me dms on whitenoise to npub1r50s0c73z0fdz5rugwjrqq0slnuhdzwlf4g7363ryfx2q0gulv5qrn7cc5 im testing something

2026-03-08 14:32:04 UTC

- reply

I considered this and chose against it. Showing this is incredibly messy. If the user wants to send then they have to mess around trying to figure out how to make up 72 with the coins they have, it's just not good UX. Users can have a lot of different "coins" and peoples fingers are fat, the buttons need to be small. It's just not good experience.
Two buttons is way better, if the user trusts they wallet they should trust it to tell them what they can and can't do.

2026-03-08 14:08:33 UTC

- reply

#nevent1q…3uew

2026-03-08 14:07:39 UTC

No internet? No problem.
With @nprofile…puz0 you can send ecash offline for specific amounts. For fiat-denominated payments, in @nprofile…c2gl we will automatically select the closest sat value that can be sent offline.
This is almost always within <$0.01 of the intended amount—so small that its not meaningfully different.
https://blossom.primal.net/af9d7ea275037e64d922fc234240b0548d938c99d482e14a54d36f554db106eb.mp4

2026-03-08 14:05:39 UTC

- reply

Do you have any suggestions? The best I can do is give a short explanation in the model, most wallets will just fail if you try to do this which is even more confusing.
In my opinion this is the best UX of any ecash wallet at the moment for this specific scenario.

2026-03-08 05:01:31 UTC

- reply

Something we’re adding to this: if you send $10, the wallet will automatically try to pick a sat amount that’s spendable offline.
A penny is ~15 sats right now, so we can adjust by ~±8 sats without meaningfully changing the dollar value. If that still doesn’t produce an offline-spendable amount, we can show a popup offering a wider range (usually just a couple pennies).
Feels like a nice UX compromise since people sending dollars don’t care about the 8th decimal place of BTC.
Thoughts?
#nevent1q…l2jx

2026-03-07 04:02:50 UTC

I’ve been working on a new offline send flow for @nprofile…c2gl.
With @nprofile…puz0, offline sends are possible, but only for specific denominations.
Our approach lets users choose whether to round up or round down to the nearest valid amount, making it easier to adapt the send amount for offline use while still giving users a bit more control.
https://blossom.primal.net/4ad39675b2b1e945cade7be929e5e7ee88dea443771fa9313e963cd83829dacf.mp4
I chose this approach instead of building a proof selector. In my testing, proof selection felt much more complicated for normal users.
With this flow, the wallet automatically calculates the proofs needed behind the scenes.

2026-03-06 14:23:54 UTC

working on a better offline send ux for cashu

2026-03-06 02:54:48 UTC

https://blossom.primal.net/63b421f3599de1e836ff4bcfc81d4eff3acc88054a229154138aace3c0b488c6.png

2026-03-05 04:37:20 UTC

i freaking love working on ecash ux its so much fun

2026-03-04 22:06:35 UTC

my tech stack:
https://blossom.primal.net/ebd07b4d10dbd957fe86a20af0174e4e28cffa5f278fccefbeb3c45a78b17c9f.png

2026-03-01 03:56:10 UTC

every openclaw bots first moments must be like:
https://www.youtube.com/watch?v=k1BneeJTDcU

2026-02-28 23:10:55 UTC

nostr spaces build on marmot protocol would be amazing

2026-02-28 23:02:19 UTC

you will be replaced by a markdown file

2026-02-24 18:04:27 UTC

- reply

Awesome work, I was lucky enough to watch this come to life!

2026-02-23 18:01:12 UTC

I ran out of Opus credits, so I decided to try Cursor (Auto) instead and built an X-inspired image viewer for Nostr posts in my app, @nprofile…0a8l.
I do not have much experience building complex gesture animations or controls, so I am really happy with how this turned out.
https://blossom.primal.net/e2a0aea661f5ac22e78c398166c41883e32c47460cfa12eceff182b3c434cf82.mp4

2026-02-23 09:59:45 UTC

- reply

I think I need to by a tablet now because this looks like fun
#nevent1q…5scr

2026-02-21 21:37:22 UTC

One of the hidden wins of the AI boom is that Bitcoin no longer gets blamed for the GPU and memory price increases.

2026-02-21 00:10:15 UTC

Don’t send me to the front lines — I can vibe code.

2026-02-20 10:21:00 UTC

- reply

I’m really proud of how far I’ve taken Sovran. I have lots of features to share over the next week or so and I’m actively building more features into the app.
If you download the app and have any feedback please do share it with me.
None of this would be possible without the help of @nprofile…t6hr and the upstream contributors of Cashu & Nostr!
#nevent1q…6apu
#nevent1q…6apu

2026-01-06 15:43:55 UTC

- reply

I love how elegant this is
#nevent1q…8mgf

2025-12-03 09:46:44 UTC

- reply

I’m very excited to try this out today!

2025-11-25 14:24:33 UTC

- reply

I'm using nos2x firefox ):

2025-11-24 17:17:07 UTC

https://blossom.primal.net/fd1015d26e63e016027fd7eafb4dc9da1306d60c75ebf30c52b5f82c82519da9.png
@nprofile…uz3y how do I actually fix this error? I can't follow anyone or I'll remove all the people I follow.

2025-11-11 19:01:22 UTC

i know my mint but my mint doesn't know me

2025-11-05 05:37:49 UTC

- reply

He is a wanker

2025-11-05 05:32:39 UTC

- reply

I cannot believe I'm seeing so many clowns come out in support of DDoSing

2025-11-03 16:08:44 UTC

Some minor UI updates to http://sovran.id - a linktree alternative which I rarely post about:
You can:
- view your follow groups
- shows meaningfully similar profiles
- add links to your other websites
- nostr search that actually works
https://blossom.primal.net/de4e9363a52c7870eaac2a752e08f5acf41190cf0357e2cb11b692a799bb54b0.png
My profile 👉 https://sovran.id/c673ff0b5f228feb0abb1001882178d4c588bc4e50f857173544b5543b454f81
Search uses https://vertexlab.io by @nprofile…w8er 🫡
Open to feature requests!

2025-11-03 12:31:05 UTC

“There’s no such thing as an ethical billionaire.”
Satoshi Nakamoto:
> created freedom money for the world
> released it freely to everyone
> vanished without spending a cent
> worth ~$120,000,000,000
https://blossom.primal.net/489c4392a867c54d0cdd993a11c88c454a585d5c0df2c85e2e1f7bdf36c18430.png

2025-11-02 05:26:50 UTC

- reply

Thanks for reporting this, it should be fixed now. I zapped you some sats you can use towards your next eSIM ☺️

2025-10-31 21:49:02 UTC

- reply

bacon bacon bacon bacon bacon bacon bacon bacon bacon bacon bacon bacon

2025-10-31 21:48:03 UTC

- reply

I don't think so, I think the tab needs to persist but it terminates when its closed. It might be possible if implemented directly into the extension. But I haven't thought about it much, I'll keep it in mind.

2025-10-31 18:34:27 UTC

I'm not sure if anyone else will find this useful but I made a #cashu browser extension which is just a simple iframe that opens http://cashu.me. This is my preferred way to use what I consider to be the best Cashu Wallet in the browser.
Links Below 👇
Chrome/Edge/Opera/Brave/Vivaldi:
https://chromewebstore.google.com/detail/cashume/adfafhcbnbehkgpkfgpbgagkjlddkohj?utm_source=item-share-cb
Firefox/Zen:
https://addons.mozilla.org/en-US/firefox/addon/cashu-me/?utm_source=addons.mozilla.org&utm_medium=referral&utm_content=search
I'll make it a priority to tidy up my long-standing branch for http://cashu.me and submit a PR that could unlock a lot of features if it gets some downloads.
Obviously if you have issues with it let me know, there shouldn't be any because its super simple.

2025-10-30 11:25:34 UTC

- reply

They are data only

2025-10-28 00:05:52 UTC

- reply

Hey, which wallet are you using? Do you have a screenshot of the error? Feel free to DM me on here!

2025-10-28 00:03:30 UTC

- reply

Thank you for doing the hard part! 🫡

2025-10-21 15:46:25 UTC

- reply

Oh thats super cool and convenient! Its definitely nice for testing an unknown app or website. I'm using nos2x-fox extension but I'm unsatisfied with it so I might give Keychat a chance!

2025-10-21 15:29:10 UTC

- reply

@nprofile…l4uf Any ideas? I setup your nginx proxy but I suspect its because a `transport` is not included in the payment request.

2025-10-21 15:25:49 UTC

- reply

Wait are these people who logged in though Keychat?

2025-10-19 21:31:39 UTC

- reply

I see the issue now. I think its because the payment request doesn't include `transport` but this is an issue with the nginx middleware I think.

2025-10-19 18:47:09 UTC

- reply

https://blossom.primal.net/51ba2ac7a1863318c126289777d80fe1050956d510754a54f167e7edde648fdb.png
Are you sure? What error do you get?
Are you locking it to the pubkey and sending the correct amount?
I tried both the testnut (free) and the minibits (paid)

2025-10-19 01:19:47 UTC

- reply

its rough out here

2025-10-19 01:01:34 UTC

idk what im doing half the time

2025-10-18 21:48:25 UTC

Introducing: 402 Markets
Explorer for X-Cashu & L402 pay-per-call API's. API information is stored on Nostr and follows OpenAPI 3.0 spec.
More information below 👇
https://blossom.primal.net/9f7c6ab1c9a4f5af8f5693294eb1acd7af360ae9b6d06bf1aab414d2f9562bbf.png
Since it's built on nostr you can publish your own API using your nostr identity and emoji react to other API's to help them build reputation.
https://blossom.primal.net/d717428597d76becc386c723858e508faa1f5596b728ff3add518d62ee4fe5da.png
I vibe coded this over the past two days, and instead of trying to perfect it, I’m just going to launch it and see how people use it and whether they find it useful.
https://402.markets
https://blossom.primal.net/ad50b03128fc58b3ef5c72154e1e6cc88e9d973b9f7ff4893a621068a2e9cadc.png

2025-10-13 20:22:55 UTC

- reply

I have an idea but maybe someone smarter can flesh it out:
- Create some kind on nostr where we can broadcast these endpoints for discoverability
- Is it possible to give some receipt that I can use to prove I used the API that way any reviews sent on nostr can be verified as real users?
So that way I can search for API's over nostr and see that users who have spent a lot of money seem to be very happy with the service.

2025-10-12 04:52:33 UTC

- reply

I can’t follow anyone more because primal will delete them all ☹️

2025-10-11 10:27:16 UTC

- reply

Is it easy to setup different prices for different endpoints?

2025-10-08 02:16:27 UTC

- reply

I already lost all my following list once by accidentally clicking it and just want to be able to follow people haha
Thanks for researching this!

2025-10-07 15:44:25 UTC

- reply

Before there were any docs I was using deep research deepwiki to get the gist of how it works. It doesn't really hallucinate that often.
https://deepwiki.com/cashubtc/coco
It's not a substitute for quality docs but it was helpful for me!

2025-10-07 14:08:12 UTC

- reply

I worked hard on @nprofile…0a8l eSIMs. So far I've had only positive feedback, if you try it out and have any issues big or small just let me know!
If the pricing seems wrong for a country or region just let me know and I'll adjust it for you 🫡

2025-10-07 14:06:32 UTC

- reply

When I used it for the first time I was blown away that it just kinda worked.

2025-10-07 14:04:15 UTC

Can someone at @nprofile…p6dz explain why this happens and how to fix it?
https://blossom.primal.net/7a388474102e387a4065282187a317c76132d08b7fe0101f8c81b1ee837a7103.png

2025-10-07 02:36:15 UTC

- reply

@nprofile…deta explain

2025-10-05 23:23:53 UTC

- reply

Oh it was my misunderstanding that's the issue I think. Apologies for flagging this as an issue! My code incorrectly thought PAID was the final state.

2025-10-05 07:00:42 UTC

- reply

I'm still learning this library so I might be way off but hopefully its still helpful feedback!

2025-10-05 01:19:17 UTC

- reply

Can I just say I love this project very much! Thank you for creating it. I'm migrating to it and rewriting almost all my app to be more coco-first. These are just suggestions of things where I've gotten stuck and been forced to rethink my usage of the library.
1. Can we add some status field to `SendHistoryEntry` & `ReceiveHistoryEntry`? It seems like I need to use `proofService` otherwise but I think that's a private field, I just got a bit stuck on this.
2. Maybe add `token` to `ReceiveHistoryEntry`? I know it's not super needed but its nice to show the user which token the redemption is for.
3. Could we add some field to HistoryEntry for npc receives from `coco-cashu-plugin-npc` so that I can know thats where the payment came from?
4. I found `cashu-kym` pretty useful to and I think it might belong in `coco`.
5. I'm having a weird thing happen where the state goes from PENDING->ISSUED->PAID->ISSUED. It seems to incorrectly revert to ISSUED (when minting). It could be some poor configuration on my side but I attached a video to help demonstrate whats going on.
https://blossom.primal.net/d0286eca73485fabd333fbc52ecb02e1f63d8f1c5880fc6bae7a78abb196213d.mov

2025-10-04 07:36:56 UTC

- reply

https://primal.net/e/nevent1qqs2mecw9uayj8m2ulthtz2j3utv8nca5kja5qcaw27euw38nm8dejgr8hf9t

2025-10-03 21:56:09 UTC

- reply

💸 Print your own ecash notes!
Each note is just a QR code and the QR code is the money.
Choose a mint, load funds with Cashu or Lightning, customize your design, hit print... BRRRR! 🚀
https://blossom.primal.net/8b0080fe30fbfb3c69a7e6c7ca10d00930e640e8722c5bea4fd498584361893e.mov
BRRR here 👉 https://brrr.gandlaf.com
More information by @nprofile…er2r 👇
https://highlighter.com/a/naddr1qvzqqqr4gupzp394x6dfmvn69cduj7e9l2jgvtvle7n5w5rtrunjlr6tx6up9k7kqys8wumn8ghj7mn0wd68ytn9d9h82mny0fmkzmn6d9njuumsv93k2tcqgpyx7aedw3hj6urjd9h8gtteda6hytt0wahz6etrv9ekstt4wd5kueedgaskuervv9nz6uedd4hkuete94c8y6tww3jhytf3x93h26mv2tslwg

2025-09-15 10:08:00 UTC

- reply

"bird app" 😂

2025-09-11 04:02:46 UTC

- reply

If you know anyone who likes to vibe code or likes contributing to open-source tagging or reposting this would help.
https://github.com/Kelbie/bitchat.land/issues
These are some of the open issues, if anyone wants to submit their own issues that they have with the website that would also be helpful!

2025-09-11 02:44:27 UTC

- reply

Oops I replied with the wrong account, DM either one and I’ll add you.

2025-09-10 23:53:02 UTC

Anyone want to help out with https://bitchat.land? I have a lot of easy tasks and some medium tasks.
I’ve open sourced it but it’s a lot of work to keep up with the pace that @nprofile…zj6n & @nprofile…h36r move at.
Comment below or DM if interested.

2025-09-03 19:18:34 UTC

https://bitchat.land new easy way to actually find people in our country without having to use a physical map. If you click on a geohash it will connect to local relays, which will then likely find more geohashes being used in those regions.
#Bitchat
https://blossom.primal.net/5279fbbe4cfb435c3e5e284b5b60bb9b7c685ae552ad505e8d82fdb84ae71f91.png

2025-09-02 20:21:12 UTC

- reply

The spam we experience on #Bitchat is 100 messages per second like ";;;;;;;;;;;;;;". That is a bad thing, with PoW thats mostly fixed or at least its limited.

2025-09-01 13:13:20 UTC

- reply

Thanks! 🫡

2025-09-01 00:54:25 UTC

- reply

When I eventually add private messaging this will be considered a bit more
https://primal.net/e/nevent1qqsy7wqdjkszr2eep68l0zjqwkzvlet6ape6tef60vxy9j03u3fg80gccq8ry

2025-09-01 00:53:50 UTC

- reply

yeah, you are right. I'll see if codex can one shot this for me 😅

2025-09-01 00:28:34 UTC

- reply

Spam attack on #Bitchat right now. I just got finished implementing proof-of-work style spam protection on https://bitchat.land which is compatible with the experimental Android release.
To turn it on just go to Settings.
https://blossom.primal.net/fdca49fd6308f199a1f24072a705f126421f88ef8d4a9c291ae0292da50ce332.png
#nevent1q…j99u

2025-08-31 20:07:33 UTC

- reply

All this might be needlessly complex, but that's just my initial thoughts on the PoW idea.

2025-08-31 20:05:50 UTC

- reply

Does it make sense for the PoW to scale with the specificity of the geohash? For example, #9q is pretty hot, so a PoW of 12 would probably be far too easy for a dedicated spammer. But for a channel like #9qqqq, a PoW of 12 might be fine, since spammers are unlikely to see that as prime real estate.
I think of the difference between these two channels as similar to the difference between Times Square and a billboard in a quiet part of town that few people ever visit.
For geohashes like #s, which are shared across 20+ countries, I would expect a lot more work to go into each message. If you want to be on the front page, you should have to put in more work in my opinion.
But perhaps PoW 13 is fine for now until we feel it out more 😅

2025-08-30 18:07:31 UTC

- reply

https://blossom.primal.net/8e3b1e6ee9a6c6f0bfe8006285d5d4f6fea3986c58096ea9ad8f2a0c4621307e.png