Egge

Building https://npub.cash 🥜 Working on awesome nostr, cashu and Lightning stuff 💜⚡️

Public Key

npub1mhcr4j594hsrnen594d7700n2t03n8gdx83zhxzculk6sh9nhwlq7uc226

NIP-05 Address

Profile Code

nprofile1qqsdmup6e2z6mcpeue6z6kl08he49hcen5xnrc3tnpvw0mdgtjemh0spz3mhxue69uhhyetvv9ujumn0wd68ytnzvuq36amnwvaz7tmjv4kxz7fwdehhxarj9emkjun9v3hx2apwdfcqkp0apk

Publishing to

relay.nostr.bg

relay.nostr.wirednet.jp

offchain.pub

Author Public Key

npub1mhcr4j594hsrnen594d7700n2t03n8gdx83zhxzculk6sh9nhwlq7uc226

Show more details

Last Notes

2025-10-24 15:17:57 UTC

Cashu-TS Version 3.0.0
We're excited to announce version 3.0.0 of cashu-ts! This release brings significant improvements to the API design, making it more intuitive and powerful. While this version includes breaking changes, we've streamlined the developer experience and added new features that make working with Cashu easier than ever.
Highlights
- Simplified Class Names & Initialization
- Introducing WalletOps - a beautiful, chainable API for wallet operations:
const { keep, send } = await wallet.ops
.send(amount, proofs)
.asP2PK({ pubkey: bytesToHex(pubKeyBob) })
.includeFees(true)
.run();
- Simplified Exports
- Better Organization
- Enhanced Authentication
- API Cleanup
- Developer Experience and Type Safety
Please see the full migration guide for detailed instructions on upgrading your code: https://github.com/cashubtc/cashu-ts/blob/v3.0.0/migration-3.0.0.md
Thanks to all contributors who made this release possible! Special thanks to @nprofile…2lex who led the redesign effort and showed incredible dedication in building this release!

2025-10-23 18:00:05 UTC

- reply

Sound like you need to wait for this: https://github.com/cashubtc/nuts/pull/283

2025-10-17 15:47:44 UTC

The great reset
#note1exv…zu65

2025-10-17 15:47:12 UTC

- reply

I recommend less talking, more building

2025-10-17 04:55:26 UTC

GM 🤙
Looks like there are some issues with Minibits right now, affecting npub.cash too.
If you are using npubx.cash you can consider switching to a different mint until this is resolved

2025-10-17 04:40:04 UTC

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It’s already here. Check out the repositories for iOS and Android linked on the website

2025-10-17 04:09:00 UTC

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There seems to be an issue with the Minibits Lightning node. If you are using npubx.cash consider switching to another mint in the meantime.

2025-10-16 20:14:22 UTC

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This is actual code run on actual Android and iOS devices. It’s just not published through an App Store. Both repositories can be found on the website

2025-10-16 19:18:54 UTC

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https://bitcoinforsignal.org/

2025-10-16 19:03:37 UTC

Sending Bitcoin in Signal feels like magic 🧙‍♂️🥜🧡💙
#BitcoinForSignal
https://video.nostr.build/b7afb88a9b3cd250cdf200d288b6996d7df10f9684f08cfb63940e2945578260.mp4

2025-10-16 16:05:11 UTC

Truly private messaging deserves truly private payments!
https://bitcoinforsignal.org/
https://blossom.primal.net/72fdbc42652d6e53e2c420f8913fc0bb2ce15d67882f87ed3620bf492a7ab22e.png

2025-10-15 07:10:58 UTC

Are you using coco? I need you help!
I would like to aim for a stable release of v1 soon. So if you have any feedback, issues or suggestions, please let me know 💜

2025-10-14 12:07:43 UTC

I have finally started to gather all my presentations, workshops and podcasts about Cashu. I will try to keep this list updated from now on 😉
https://github.com/Egge21M/lets-talk-cashu

2025-10-13 10:16:17 UTC

Coco RC10 is out for testing, including an API to pause and resume subscription services. This is helpful for environments where the OS will take over and kill processes and sockets (e.g. backgrounding an app on iOS).
Read more about this here: https://cashubtc.github.io/coco/starting/subscriptions.html#managing-subscription-lifecycle

2025-10-11 18:15:50 UTC

The Bitcoin Forum Ingolstadt was an absolute blast! So many great people, lots of inspiring conversation and as always so much Cashu 🥜💜
Best Bitcoin ice by Beppo
Best haircut paid in sats by @npub1nve…4u3z
The best memes and giggles (and best in class seed storage) by @npub1r83…wym8
BitBox team rocking their booth 14 hours a day
I will be coming back next year 🙌🏻

2025-10-08 16:17:27 UTC

Gotta catch em all 🧡❤️🩵
https://image.nostr.build/e7f21f11a5876d2f3c50ed6ad4664eac36ba51f26df70572d4ae109586638f6a.jpg

2025-10-08 06:19:16 UTC

I love this space!
> Someone should build this
> Someone already has
#note1nuu…msrl

2025-10-08 04:50:05 UTC

Someone should build a web of trust service, based on a sophisticated graph based database. The service should tell me immediately which pubkeys are within n hops of me.
Then monetize it with Cashu-402

2025-10-07 10:17:34 UTC

Felt cute, might delete later
https://blossom.primal.net/88b19d837068645ebbec6760ef18faebcf28b73d03df7721ddcb98573664c5bc.png

2025-10-06 13:17:34 UTC

If you understand some German you should come to the 3rd Bitcoin Forum in Ingolstadt!
Of course I’ll be giving a presentation on Cashu 🥜 and whether it is the next layer on Lightning. ⚡️ We will go into Cashu applications, and how it can extend the Lightning network to allow for new usecases!
🎟️ Tickets: https://copiaro.com/bitcoinforum/lightning-day
More information about the event:
👉 https://bitcoinforum.bayern/lightning

2025-10-05 18:36:31 UTC

- reply

“ISSUED” is the final state of a mint quote.
Pending: payment has not been received by the mint
Paid: payment has been received by the mint
Issues: wallet redeemed the quote
So the final state being issued is correct. Are you sure you are seeing the issued state before the paid state?
The updates are not done in a state machine, so this could be the case / a bug. I just want to make sure that we are on the same page

2025-10-04 20:07:29 UTC

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Coco is built on top of Cashu-ts. It aims to be an opinionated, all-in-one solution that takes care of all the Cashu stuff internally. Cashu-ts is a stateless toolkit that is perfect if you want to build your own implementation, but it requires you to take care of a lot yourself

2025-10-04 16:24:33 UTC

Coco is a batteries-included TypeScript SDK for Cashu development. Get Cashu into your app with less than 50 lines of code.
Coco is in early alpha, so if you have played around with it I would really appreciate your thorough feedback!
GitHub: https://github.com/cashubtc/coco
Docs (WIP): https://cashubtc.github.io/coco/starting/start-here.html

2025-09-30 10:49:43 UTC

Rental apartment, rental car, clothing, groceries, subway sandwich, Queijadas, coffee, contractors, domain names, tech
#note1u8r…xday

2025-09-29 15:03:13 UTC

A house full of runny noses and a conference ahead in 3 days… time to get out the big guns! Chicken stocks here to safe the day
https://image.nostr.build/33d954ff11a8286b7a8b5b4c2350ae28005e357e1b5b41f212e5c25d4c03d8f7.jpg

2025-09-28 18:16:22 UTC

I caught a cold and could not really concentrate on code for a couple days, but I used the time wisely and have updated most of the documentation around npub.cash v2!
Find new docs about deployment and the client side SDK on https://docs.npub.cash!
The npubcash-sdk now also contains proper JSdocs annotations for easier use. And now that I fought the fever with docs, lets get back to coding!

2025-09-26 19:40:28 UTC

Audible, if I were you I’d check my algorithm
https://image.nostr.build/225eee46936946748855d399f8952fd9fc83ef03e9b37e0e72a3eb39fc117be9.jpg

2025-09-26 18:27:05 UTC

- reply

Check out https://github.com/cashubtc/npubcash-server
Make sure to look at the v2 branch that does not require an external Lightning backend (it uses the mints)

2025-09-20 11:03:37 UTC

The new npubx.cash interface driven by coco-cashu is coming along super nice!
Pretty much all of the Cashu logic is handled out-of-the-box by coco-cashu and coco-cashu-plugin-npc (which now supports websocket updates too, so payments can be automatically redeemed)
https://blossom.primal.net/368c0ca83aee4af8554a9c308baf3a9d57b63586a2ebd844e1f0a6fb0b2809fe.mp4

2025-09-19 08:16:45 UTC

I have not implemented NIP-46 for a while... The UX has certainly come a looong way. This is so smooth!
https://blossom.primal.net/3bf8ffb8b6760e88993a9ea2b15a287fec25dd56499dbf803be26fbb893c3154.mp4

2025-09-18 18:42:15 UTC

👀
https://blossom.primal.net/4cda24bd1cfd5e6b134f644b03ee2b8ec1ac77f6cfe6a026b5ea978fc48bbb22.png

2025-09-18 06:11:44 UTC

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Actually I think typescript is pretty great! Of course JS has its limitations and quirks, but the type system is pretty amazing IMHO.

2025-09-17 18:46:11 UTC

When I started to work on npubx.cash I thought that this new version would not have a frontend like the old version did. The reason being, that it works best when integrated into a fully persisted and feature complete Cashu wallet. And I did not want to build a full wallet app just for npubx.cash...
Well thanks to coco-cashu this has now become a matter of UI design alone. With coco-cashu-core and coco-cashu-plugin-npc you get a full wallet with npub.cash integration out of the box. All that is left is some UI work.
https://blossom.primal.net/25bc040efda2e1d25eeb23b5d4c8631f8ae583d4e3f683515955b5fa8517b9c5.mp4

2025-09-17 17:17:17 UTC

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https://github.com/cashubtc/nuts/blob/main/25.md

2025-09-17 14:01:50 UTC

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Cashu.me seems to be up again btw

2025-09-17 14:01:10 UTC

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Npubx.cash is integrated into Cashu.me and Sovran. It will be part of eNuts. I am currently working on a new web wallet and a CLI for it too.

2025-09-17 09:42:29 UTC

The goal of coco is to give you the “just-works-out-of-the-box” Cashu treatment, while at the same time being modular and extendable. It’s pretty new and early in development, but if you are building an MVP please give it a spin and let me know how it went! 💜
#note10cd…9rrt

2025-09-17 06:51:32 UTC

GM nostr <3

2025-09-16 11:31:54 UTC

Based 🔥
https://image.nostr.build/cb2c710f7347b5b84aa046175e319f6aa84903d58fa935a1c798bffc116201cc.jpg

2025-09-16 07:06:27 UTC

You don’t need an external monitor. This is peak productivity (setting aside the peripherals)
#note1rf6…t8dh

2025-09-15 16:44:35 UTC

And here we go! The first plugin for coco-cashu is already available! 🔥
coco-cashu-plugin-npc will automatically fetch pending payments from your npub.cash address and claim them inside you coco wallet! Fully automated.
https://image.nostr.build/b31d535ba5fef1276a39458daf806e1ccd4262feab02ecaef0da544d60054a43.jpg

2025-09-15 13:39:09 UTC

Probably the most fun thing I have built in a while: coco-cashu is getting a plugin system! Plugins can access all services and life cycles and interact with them.
Simply register a plugin when instantiating the library and let it do all the rest. This was the last missing piece to making coco-cashu truly modular.
And of course, there will be a npub.cash plugin for coco
https://blossom.primal.net/1aa1311f3eead373db542b2425bab3a91db5763dd3e340331dd41f3746e589d7.png

2025-09-15 11:37:34 UTC

Had cursor set to Opus for a couple of hours by accident… F

2025-09-15 10:23:06 UTC

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Wheres 🐱☕️?

2025-09-15 05:38:42 UTC

coco-cashu can now also handle pre-existing mint quotes, when they are added using the new addExistingMintQuote API.
As a result you can implement a working npub.cash wallet in minutes using coco-cashu and npubcash-sdk 🔥

2025-09-14 15:58:14 UTC

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Hi man, sorry to hear that! Unfortunately the service is no more. Maybe @npub1mz3…mymx can help you out though.

2025-09-12 16:21:48 UTC

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Oh that is amazing! I wonder if the kv-store could be a storage provider for coco at some point. Super cool 👌

2025-09-12 15:37:17 UTC

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Oh I can’t wait to hear what this is about 🔥🔥

2025-09-12 15:35:21 UTC

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👀
#nevent1q…95l2

2025-09-11 20:41:40 UTC

Thinking about doing some nostr live coding with coco-cashu tomorrow evening. Would you watch that?

2025-09-11 13:15:24 UTC

Full restore via coco-cashu in eNuts is finally working 🙌🏻
https://blossom.primal.net/ae491ad2726117fab2acf5e6f69e051cb00936c5feb809497d3b29f2669f7bb9.mov

2025-09-11 08:41:34 UTC

coco-cashu now comes with a react wrapper, making Cashu wallet dev even easier. The library exposes a couple of hooks and contexts that let you:
- Build reactive components that automatically re-render when state inside coco changes (e.g. balance, tx history, mint list in this video)
- Access the coco API from within react to add to your wallet UI
https://blossom.primal.net/c74e07b39efb40bad1a3b2d61ea0a1e4a3b462422ff369d21337a974c44ce6a2.mp4

2025-09-11 04:39:33 UTC

The internet is a curse and a blessing. The fact that these two girls are inevitably going to get confronted with a video of their farther being murdered in cold blood is breaking my heart.
I am always worried about the future of my own little girl, but this is taking it to a whole new level. Be careful out there anon <3

2025-09-10 19:46:18 UTC

Charlie Kirk got shot in his throat while on stage. No matter if you agree or disagree with his views, I’ve always seen him as someone who is actively looking to have a conversation, even if controversial or difficult. What the fuck…

2025-09-10 12:01:56 UTC

Wanna build?! Join the best builders at this years ecash hackday on 1st of October in Berlin 🤙💜
It’s right before the Lightning++ @npub1dwa…7c52 so hit two birds with one stone!
https://ecashhackday.github.io/

2025-09-10 08:53:25 UTC

- reply

Yes, the invoice returned by the LNURL server comes from a mint, the sats are sent from the payer to the mint, the receiver gets a so called quote (a claim towards the mint) to redeem them whenever they like

2025-09-10 08:15:44 UTC

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Well the address provided by npub.cash is a LUD-16 Lightning Address, which encodes a LNURL-pay link.
The implementation is much different to most of the standard LNURL servers (as it uses mints instead of connecting to a lightning backend), but that doesn't make it NOT lnurl.

2025-09-09 07:19:46 UTC

I am on the same page since omarchy + framework
#note1nqh…cv9j

2025-09-09 06:26:25 UTC

Attention German Folks: CDK Summer is Cashu Summer! Listen to Manu and me talk about Cashu and it’s use case as digital money 🤙
#note1lc0…98aj

2025-09-09 06:23:44 UTC

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Danke dir! Ja, das ist es

2025-09-08 19:18:44 UTC

Sending nuts from iOS (macadamia) to Graphene (minibits) via wifi 🔥🥜
https://blossom.primal.net/6f70b3b75c887386a153aa18bca085b8f1f5ce57cdb89d51c9304f95f535cc24.mov

2025-09-08 11:38:10 UTC

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Sending a DM :)

2025-09-08 11:19:24 UTC

The great mind behind the stickers I have been posting recently is my lovely wife ❤️ she is now on nostr too: @npub1p92…2ngu
Be so kind and give her a warm welcome 🙏🥳
#note1qc4…6t38

2025-09-08 10:24:15 UTC

If you prefer a clean laptop over stickers, you don’t have the right stickers
https://image.nostr.build/f616a923c7a2d5f6cbe2a8266af8f50eccab491a10479fc4126eafda6ed29b36.jpg

2025-09-08 10:23:32 UTC

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What exactly? The fallback logic is actually quite naive right now, as it will never retry websockets after falling back to polling. However processes are usually short lived enough that it doesn’t matter

2025-09-08 08:37:01 UTC

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Cashu.me might have to be opened for NWC to work. Not sure though. @nprofile…u2t2 might know what’s up

2025-09-08 07:50:03 UTC

I am pretty sure 50% of the coco-cashu codebase is now subscription and state check logic.
- Whenever the wallet requires updates from the mint it will subscribe for them.
- Coco will batch and debounce subscriptions as much as possible.
- It will re-connect sockets automatically and re-subscribe now stale subscriptions
- If a socket breaks and can not be reconnected it will automatically fallback to polling. The same happens if the environment or the Mint does not support WS.
- In polling automated backoffs are added, proof checks are batched.
- All HTTP communication with the mint is throttled by a token-based system that allows bursts, but will make sure we don't call the mint more than 25 times per minute.
- The throttling logic filters by requested URL, so that non-rate-limited endpoints like /keys or /info don't could towards our threshold.
I really find this to be the most difficult part about building a wallet. I hope this gives us a solid foundation to build up on.

2025-09-07 11:18:07 UTC

This is the kind of tester every project needs 💜
#note1px2…ypux

2025-09-07 11:17:31 UTC

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Yes partially, nutzaps allow any nostr account to instantly receive zaps without any setup. Of course clients would still need to implement them for better UX. But no own server is required.
They are also verifiable by everyone without the round trip that is currently required by standard zaps

2025-09-07 11:14:47 UTC

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https://github.com/Egge21M/coco-cashu
Yes, I think it would be perfect for that. Please feel free to open an issue if there is something missing.
Please note that coco is still very early development and super alpha. So don’t be reckless

2025-09-07 11:13:06 UTC

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Absolutely, but standard Zaps rely on the regular LUD-16 LNURL specification. So clients that zap expect a url that they can call to get an invoice from

2025-09-07 09:01:52 UTC

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GM 🤙

2025-09-07 08:30:46 UTC

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I love the nym business. It’s now completely normal for me to finish a day of work by telling my wife what “Gandlaf” or “thesimplekid” said or did today 🤣

2025-09-07 05:19:13 UTC

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Kinda, I looked into umbrel once. The issue with self hosting a Lightning address always is, that it needs to be reachable by others through clearnet. Otherwise no one can zap you. So you would need to host a reverse proxy if your start9 is running at home and on tor

2025-09-06 17:03:24 UTC

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You can get a nostr signing extension for your browser and add your nostr key there. Then when you open the settings in cashu.me, choose to use the signing extension in the nostr settings. Cashu.me will then use you primal npub.cash and show your username too.
You can also enable the new version of npub.cash (npubx.cash) in the experimental settings

2025-09-06 08:47:13 UTC

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This is Cricuts holographic vinyl. My wife is just getting started and exploring all the options.

2025-09-06 08:45:30 UTC

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We are actually thinking about selling these at some point. My wife is just getting into it. She is not complete satisfied with the result yet, and she wants to make them perfect before taking money.

2025-09-06 08:23:33 UTC

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We are going full Calle 🟩
https://blossom.primal.net/969d2709417a7e7372a8e692a3aeb83583defe02262a8d0eae2071d24c8b31ee.jpg
#nevent1q…56lx

2025-09-06 07:53:17 UTC

Started mass production 🤙🔥
https://blossom.primal.net/e8d40b10c87a051c146d4a4fe5cb40fb8739b0bb5b358c902040eba5cce6451e.jpg

2025-09-06 06:39:23 UTC

Always a blast to talk freedom tech and Cashu! Hope to be back soon 🔥
#note1ea2…a82g

2025-09-06 06:37:31 UTC

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In spirit 🤙

2025-09-05 20:46:21 UTC

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I really miss the Fridays. Those were the best 🤙 Keep up the great work

2025-09-05 20:44:36 UTC

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Are you happy with it? I am think about replacing my splits with a regular keyboard soonish, as I am travelling so much and don’t want to waste mental capacity on switching layouts all the time

2025-09-05 18:42:27 UTC

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Is that a nuphy sneaking in on the side?

2025-09-05 16:59:21 UTC

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I have a fair bit of experience. But it’s always a pain. What’s up?

2025-09-05 11:42:58 UTC

When I went to Madeira for SEC-03, I booked my apartment there. Massive service 🙏 They helped me find the right place for me and my family, were available whenever you needed them and the place itself was perfect. 10/10!
#note1hld…qsj7

2025-09-05 08:14:10 UTC

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See you tonight 🤙🔥
#nevent1q…2dqz

2025-09-04 17:17:09 UTC

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https://stevetipp.github.io/Qwork.github.io/experiment76.html

2025-09-04 16:53:14 UTC

What a ride! Here comes Coco-Cashu v1 alpha! 🔥
coco-cashu is an all-in-one, batteries-included dev kit for building Cashu wallets and apps. It takes care of everything behind the scenes: counter management, mint updates and sync, quote creation and redemption, proof storage and state management, counters, and a typed event bus so you can hook into it.
This release is an early alpha release, mostly to get some feedback and find the bugs. Coco-cashu is NOT production ready and should be used with care.
https://www.npmjs.com/package/coco-cashu-core

2025-09-04 07:22:05 UTC

🔥🔥 BREAKING 🔥🔥
IBMs quantum computer breaks an ECDSA key that a high schooler could break with pen and paper.
Bitcoin basically worthless now

2025-09-03 20:30:02 UTC

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No, but she should! I’ll get you one though :)

2025-09-03 19:47:49 UTC

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In the same boat! I use it for automation, but for coding I use Cursor. The UX is just too good

2025-09-03 19:30:15 UTC

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Yes 🫡 My wife’s a magician
https://video.nostr.build/373a87c261c3275343749325d36fd6331ea2888c8129f1333ab7eec3e5f2cd56.mp4

2025-09-03 19:26:11 UTC

You know exactly what to do anon!
https://image.nostr.build/77971dc8956714cdf3fd2a8c6ce3f55b1652fb646b27dcb6d23b852232860778.jpg

2025-09-03 18:27:34 UTC

Let's go full calle! https://blossom.primal.net/e2179725c7324a3a9ba3d058969f09c3bdf4500b6169b6fecb93b71642209893.png

2025-09-03 18:14:13 UTC

With this coco-cashu supports basic mint and melt, send and receive, deterministic secrets, restore, and automatic state syncs via web sockets.
I am now working to bolt it into eNuts and see how well it works. 🔥
#note1fqt…4xup

2025-09-03 17:49:57 UTC

I guess coco-cashu is getting close to it's first alpha release! https://blossom.primal.net/57aa131f81c5836868e54df6abd3165d7d3ff8bcaf8ca8daf8f1b579a51af64e.mp4

2025-09-03 13:34:44 UTC

coco-cashu-core v0.9 is out! New in this version:
- Watcher Services that will keep check on pending mint quotes and inflight proofs. Once paid or spent they will automatically remove proofs from the database or mint the respective mint quote.
- A Socket Manager that will try to reconnect broken Web Socket connections and will cause the Subscription Manager to resub all pending subscriptions.
- When a mint quote is redeemed and minted (whether automatically or manually) the Mint Quote Service will now emit a mint-quote:redeemed event
https://blossom.primal.net/a0a83b1fc13d63286bc656d3479bb38ee3f1da1005b28722388ba41a5e1232ad.mp4

2025-09-03 12:43:55 UTC

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Everything sir.

2025-09-03 12:09:13 UTC

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That comes down to time preference and your standards, no?
I know dev beasts that work on 10 year old Lenovos. I came from using a Mac, and fractional scaling is just not cutting it when it comes to sharpness. So getting the 2.8k monitor would help, but obviously this is not “needing” it.