kevinrav
Kevin Ravens₿erg ⚡️ ☁️

https://www.kravens.nl/

Space Researcher, Noderunner (bitcoin/lnd), hosting Noderunners Batched Transaction Coordinator (see: https://coinjoin.nl/ ) and BitTipBot (https://t.me/BitTipBot)
PGP: 2536 F69E 9C37 2566 2B6C 146B DCF1 7F7A 0127 2020

Public Key

npub1yn84ur49llj7pp9a7uv477f7vrpj0rj7df5pnfncvkusaxgy6jqsj9xgfl

NIP-05 Address

[email protected]

Profile Code

nprofile1qqszfn67p6jlle0qsj7lwx2l0ylxpse83e0x56qe5euxtwgwnyzdfqgpp4mhxue69uhkummn9ekx7mqpz3mhxue69uhhyetvv9ujuerpd46hxtnfduytqwhw

Publishing to

nostr.cheeserobot.org

relay.azzamo.net

Author Public Key

npub1yn84ur49llj7pp9a7uv477f7vrpj0rj7df5pnfncvkusaxgy6jqsj9xgfl

Show more details

Last Notes

2026-07-16 07:53:04 UTC

- reply

https://image.nostr.build/4f6cf934b9c092bc9ca5585d382a9d9f316654f00b0bd6928a04ba70e101e7da.jpg

2026-07-16 07:50:40 UTC

- reply

Trezor has done it very well, then disabled the feature when zkSNACKs sunset the coordinator. I’ve revived that feature on my Wasabi Wallet branch, waiting for review hoping for the next 2.X release in Wasabi.

2026-07-16 07:35:34 UTC

- reply

https://coinjoin.nl 🕶️
https://fountain.fm/episode/Mr4DojGzekgbOrxFhJWN
#nevent1q…3zt7

2026-07-16 06:52:47 UTC

- reply

Yes, we have a 45 minute panel where we will talk about coordinators and coinjoin. Also trying to arrange a demo of hardware wallet remote signing auto-coinjoin, which I’m focussing on building this month.

2026-07-15 22:37:40 UTC

- reply

https://primal.net/e/nevent1qqsphfmrs64ua4uj2dqltcr0c5qhjmmk8zmueecnf5sgy6yrutn5cqcasutt8

2026-07-15 22:07:30 UTC

https://kravens.nl/images/privacy_promo_v1.1_music.mp4
Get your ticket now at: https://noderunners.network/conference

2026-07-15 15:17:12 UTC

- reply

Needs magnetic levitation

2026-07-14 15:33:14 UTC

- reply

2026-07-14 07:43:58 UTC

https://coinjoin.nl 🍣
https://image.nostr.build/3b1164852673247c089797e95c810425a910bf36d56315dcae8e750187c47fb1.gif

2026-07-13 20:51:41 UTC

https://youtu.be/mwdgtGI5G84
I feel the sudden urge to build a portable bitcoin node...

2026-07-13 20:12:12 UTC

- reply

Curious if we can do this in Wasabi with the batched Payments in coinjoin 👀

2026-07-13 07:50:22 UTC

- reply

2026-07-13 02:44:18 UTC

- reply

There are grassroots devs outside the big corps

2026-07-13 02:42:07 UTC

- reply

Maybe in 2 years time then!

2026-07-13 02:41:11 UTC

- reply

They get paid in bitcoin and need to pay tax in fiat, quite a struggle when price goes down

2026-07-13 02:39:39 UTC

- reply

Come meet me at https://noderunners.network/conference I promise it wont be trash, but the best one ever!

2026-07-13 02:37:58 UTC

- reply

Their income depends on bitcoin succeeding, if they get grants at all.

2026-07-13 02:36:41 UTC

- reply

You can do so safely at a local bitdevs

2026-07-13 02:36:01 UTC

- reply

Have you met Bitcoin Core devs IRL and asked them?

2026-07-13 02:34:59 UTC

- reply

Bitcoin Core is not a single entity, but many different developers that try their best to keep this pile of spaghetti code from Satoshi running. Including the OP_Return solution Satoshi made for arbitrary data that needs no validation checks (cpu cycles in IBD)

2026-07-13 02:31:13 UTC

- reply

https://coinjoin.nl does not use op_return indeed, and are better 🕶️

2026-07-13 02:30:04 UTC

- reply

I bought a 4TB fast NVMe this year for 400€, wil store bitcoin for at least 10 more years.

2026-07-13 02:28:36 UTC

- reply

Certain forms of coinjoin transactions depending on a OP_Return > 42 bytes

2026-07-13 02:26:58 UTC

- reply

Yes

2026-07-13 02:24:27 UTC

- reply

I use the scientific method and prefer random data goes into OP_RETURNs over address/public keys which bloat the UTXO set. We can’t prevent embedding arbitrary data AND keep censorship resistance in Bitcoin.

2026-07-13 02:20:35 UTC

- reply

Listen: https://fountain.fm/episode/RTyqDGI1uXCNgXT2wDlJ

2026-07-13 02:10:48 UTC

- reply

Ask @npub1yxp…399s what changes in BIP110 are required to make it safe, when those are in I’ll reconsider.

2026-07-13 01:14:10 UTC

- reply

Also adapted for Start9 StartOS with Sabi9: https://github.com/kravens/sabi9-startos/releases/tag/v1.0

2026-07-13 01:11:46 UTC

- reply

If I ignore BIP110 with my services I should be just fine then.

2026-07-12 11:46:53 UTC

- reply

https://cdn.azzamo.media/db22ce7948c3ac0843d6ee6393093fd7d9f17fa2b72f0018acac04da356c0b5a.png
Updated the website 🕶️
#nevent1q…x9rx

2026-07-12 02:34:48 UTC

- reply

It’s the highly regarded take, we’ll pump again on v32 release due to 4 year cycle and 6 months release period.

2026-07-11 23:16:06 UTC

- reply

https://cdn.azzamo.media/7e44c89ca3538d620ca6a8e2804964169547f7778ce7ce4663747b0e3941b71b.png

2026-07-11 21:56:21 UTC

https://blossom.primal.net/424903b01e97d84abe2a19a0538c5a8ec386c78862a9d16445de6c4cccb18b78.mp4 Join us again for https://coinjoin.nl Sunday! 🕶️ (soon with your Trezor/Coldcard*/Passport*/Krux*)
*in development*

2026-07-11 16:20:11 UTC

- reply

Check my progress here: https://github.com/kravens/coinjoin.nl/blob/main/passport/PASSPORT_TESTING.md

2026-07-11 16:19:11 UTC

- reply

@npub1pu5…pn0a Check this 10GB limit blossom server of Azzamo Relay, you should be able to upload the full high quality video's here forever!

2026-07-11 14:07:51 UTC

- reply

My clankers are working hard on the implementation, still have 2 days Fable 5 access 🫡

2026-07-11 13:43:25 UTC

- reply

Sent DM, hope it arrived as request.

2026-07-11 12:38:00 UTC

- reply

Awesome 🤝

2026-07-11 11:14:37 UTC

- reply

I’ll ask Claude to make it happen

2026-07-11 10:55:24 UTC

- reply

Can we collaborate to make remote signing of WabiSabi coinjoins possible? (it only works on Trezor currently: https://github.com/WalletWasabi/WalletWasabi/pull/14759 )

2026-07-10 07:19:56 UTC

- reply

GM fren

2026-07-09 18:58:31 UTC

Cheapest round of https://coinjoin.nl so far this year 🕶️ and something sweet is coming for those Trezor owners out there soon!
https://image.nostr.build/ef86ca8d8640d1476406b028f35b2a8d16e6c803ef4c2be567df75955e00198d.gif

2026-07-09 18:54:46 UTC

- reply

I wish to be able to run something like that locally in the future!

2026-07-09 17:47:16 UTC

- reply

Do you use it locally or from a cloud AI provider?

2026-07-09 15:59:21 UTC

- reply

I just don’t want them to nerf it that hard

2026-07-08 06:29:38 UTC

https://blossom.primal.net/6166efca558eb59f2e9e9073ab1f651a296e00512bbd642a1b3096f38fd58896.png

2026-07-07 22:32:44 UTC

- reply

Yeah, I have to babysit Claude Fable so it does the right thing too.

2026-07-07 22:24:57 UTC

- reply

Will they call it Xursor?

2026-07-07 08:41:06 UTC

- reply

https://coinjoin.nl 🕶️
https://fountain.fm/episode/OUyTy9uTGGq8ELJ8qTct
#nevent1q…gs8r

2026-07-07 07:12:06 UTC

- reply

I enjoy keeping the mempool view open and see latest coinjoin txs flow in 😎 when viewing a tx you can press E to expand the view into a graph of connected transactions

2026-07-05 22:05:11 UTC

- reply

Looks really smooth and transparant

2026-07-05 20:03:31 UTC

https://blossom.primal.net/2f90ca84f4a2876f9ad13356231b6ca91501d68637f41bd326f195d71392ce62.png
So will you join https://coinjoin.nl 🕶️ for a round of privacy today?

2026-07-05 08:55:22 UTC

It's https://coinjoin.nl Sunday folks! Join us for a round today!
#nevent1q…hys8

2026-07-04 13:56:48 UTC

- reply

Let me know if the controls work fine for you and if any advanced feature I don’t know about is still missing.

2026-07-04 10:49:55 UTC

New project is out: https://github.com/kravens/coinjoin.nl/blob/main/scripts/README.md
A TUI that wraps the Wasabi Wallet headless daemon (helps you start running it too) in python. It includes advanced Scheme features and has multi-wallet automation (e.g. to do auto-coinjoin in hot wallets to cold wallets on threshold basis). Try it out if you like living in the terminal like a shadowy super coder!
https://blossom.primal.net/65033e77ecc7676cfd8575efef53f6021fe0736e248764945ee3d762b6bd184f.png

2026-07-04 08:08:55 UTC

- reply

Finally, remember the regular media blamed Russia before it even got sabotaged.

2026-07-04 08:07:05 UTC

- reply

💀

2026-06-30 10:00:42 UTC

- reply

I’ll be whispering jailbreaking prompt injections all day then.

2026-06-28 13:50:47 UTC

- reply

Where can we try this sorcery?

2026-06-28 11:42:06 UTC

- reply

You can try it out yourself: https://github.com/kravens/coinjoin.nl/blob/main/scripts/txflow.py

2026-06-28 11:31:56 UTC

- reply

Also, Wasabi Wallet is not a company. Just an open source project now and open to contributions that help improve the wallet.

2026-06-28 11:29:59 UTC

- reply

Hehehe, only helped lower the coordinator minimum fee to 0.5 sat/vB this time 😅

2026-06-27 23:30:46 UTC

New Wasabi Wallet v2.8.0 is out, try it out today with a payment batched in a round of https://coinjoin.nl 🕶️ https://blossom.primal.net/2fb01bfd80f49dfb4a0f34d318450aa8619bce2fe8937571036ddad1772a4c70.mp4

2026-06-26 21:08:25 UTC

- reply

Here exploring the anon-set increase of repeated coinjoin rounds in a tx graph: https://blossom.primal.net/5839b9452abd7a4b3879ba18ddcdfa4f40e28ef61bcf6b0917948aee1d849281.mp4
#nevent1q…dw69

2026-06-25 19:04:26 UTC

https://youtu.be/lZbfNtDCHdM
Class of 2017 during this years dip 🎶

2026-06-24 23:29:02 UTC

- reply

Nope, you are following 0 people too 👀 at least follow yourself for things to work

2026-06-24 17:04:58 UTC

- reply

Copilot says:
```
No, this repo does **not** use d3.js directly. However, it uses **Visx** (from Airbnb), which is a collection of low-level React components built on top of d3 primitives.
The repo imports specific d3 utilities only where needed:
- `d3-sankey` - for Sankey graph layout
- `d3-hierarchy` - for hierarchical data structures (Pack, Tree)
- `d3-array` - for utilities like `bisector`
- `d3-shape` - for curve and shape utilities
The visualization strategy is to use **Visx components** (like `@visx/sankey`, `@visx/hierarchy`, `@visx/shape`) that handle rendering, then supplement with targeted d3 modules for data transformation and layout calculation. This keeps the bundle size smaller than importing the full d3.js library while maintaining full functionality.
Examples in the codebase:
- **Sankey diagrams** (`FlowChart.tsx`, `CoinJoinChart.tsx`) - uses `@visx/sankey` + `d3-sankey`
- **Bubble charts** (`UtxoBubbleChart.tsx`) - uses `@visx/hierarchy` + `d3-hierarchy`
- **Timeline charts** (`PrivacyTimeline.tsx`) - uses `@visx/shape` + `d3-shape`
```

2026-06-24 09:00:51 UTC

- reply

Better believe it!

2026-06-24 00:04:21 UTC

- reply

https://blossom.primal.net/71b11b5482e70ffc4cb4993da8b43d688c4ccff4b933fc2b2f5da0c6c4705ef7.mp4
And to do justice to the coinjoin.kruw.io 🐳 big rounds, I had to add scrolling and denomination anon-set scoring.
#nevent1q…mmx7

2026-06-22 23:00:25 UTC

- reply

Find the python code here: https://github.com/kravens/coinjoin.nl/blob/main/txflow.py

2026-06-22 22:57:46 UTC

- reply

https://blossom.primal.net/f9cedf66fd12931d957da4a6ceb62bd9e0bda9bad639cb3846f78b53f542ca5c.mp4
Also just made it interactive, so you can walk (a/d) to the next transaction with the highest value UTXO. Or scroll (w/s) through big coinjoins that don't even fit on your tiny terminal screen.
#nevent1q…0w7r

2026-06-21 08:55:26 UTC

- reply

One without bugs on it?

2026-06-21 00:46:56 UTC

Join us for https://coinjoin.nl Sunday 🕶️
https://blossom.primal.net/245366289ad773f4cf1aa0bb5f6e38abc0dcf35e820463aee90a690ab30c0208.mp4

2026-06-20 11:12:12 UTC

https://blossom.primal.net/cd5d0fb62dc6e0c6c46cbe920654d1d124f9d30746809aaf37387f77276827d3.mp4

2026-06-20 07:55:55 UTC

https://youtu.be/-BhcQURVjJg
For the ASCII lovers

2026-06-18 20:30:11 UTC

- reply

Stay strong fren 🖤

2026-06-18 20:15:37 UTC

https://blossom.primal.net/4edaa7b18f58c720b4ead20399fb72a45494f9d010e216f78050512b386794f3.png We've finally reached budget level coinjoins with https://coinjoin.nl
🕶️ Great privacy for a small mining fee 🔥

2026-06-18 07:20:10 UTC

- reply

2026-06-18 07:19:00 UTC

- reply

Has a certain green/yellow tang to it

2026-06-16 22:27:16 UTC

- reply

Yeah, it’s not close reality at all. Percentages don’t add up 100% and more ‘likely’ is not the actual link. I should open an issue to let the am-i.exposed devs know. Or ask Claude to fix the probability matrix for me 😇 so it just says chance=1/inputs

2026-06-16 20:58:12 UTC

- reply

https://blossom.primal.net/126f6a5e2e7c40116eec19096974fd70f3827faafe2dbaca3813cd0944ec5d95.png
Link probability matrix does give the total number of interpretations 🤯

2026-06-16 07:52:38 UTC

- reply

Yeah, and our objective is skewing the study in this case

2026-06-16 07:50:31 UTC

- reply

And that is the reason it gives an A+ rating, this method can’t link outputs to actual inputs 🕶️

2026-06-15 22:01:09 UTC

- reply

The Coinjoin view is better, with anonset per denomination

2026-06-15 21:56:01 UTC

- reply

Yeah, the lines are “possible” links with small probability

2026-06-15 08:53:47 UTC

- reply

It took a while, but got through it

2026-06-15 08:52:42 UTC

- reply

I thought the Gemma 4B model on my phone was cool.

2026-06-14 23:54:44 UTC

- reply

https://blossom.primal.net/9f857d5a5d3a91306e3c79c40b8ee9894adda236609421d78475c77140e58b6f.png
The first very low fee round of the month: https://am-i.exposed/#tx=502e4d8ac9fe353220f8c6da47f587e3d3a8c56dc0d78388c1135333810948be

2026-06-14 18:44:10 UTC

https://blossom.primal.net/504b615cba63dd0e8185ac9d9fa9c910cfd715cd4969d51cf3be47bd0c8e735f.png https://coinjoin.nl is fully synced and live 🕶️

2026-06-14 17:25:25 UTC

- reply

https://blossom.primal.net/2b34f85783aaa47e5feee250748cec8ee24bd93d99be1e199027d79f7f7569fd.png
Almost there!

2026-06-14 09:08:09 UTC

- reply

Coool!

2026-06-14 08:26:42 UTC

- reply

https://blossom.primal.net/a6064e35371f61800c263ac6eab0cb43601db477202e55b8b296c9b1d8b4d9c9.png Syncing will take a couple more hours, then we can do another https://coinjoin.nl round 🕶️ if you leave Wasabi Wallet with auto-start running in the background you'll join once I start announcing again automatically.
#nevent1q…hat0

2026-06-14 08:20:13 UTC

- reply

Bottom signal

2026-06-14 08:17:36 UTC

- reply

2026-06-14 08:16:07 UTC

- reply

Mining is profitable again for me now 🐳

2026-06-14 08:15:22 UTC

- reply

Hi 👋

2026-06-13 23:00:39 UTC

- reply

But who will pump our bags then?

2026-06-13 13:52:12 UTC

- reply

Looks crazy on a phone aspect ratio:
https://image.nostr.build/e2e74f4c680ffa47b0aa047b9ca680a7d26b45bb72bf8e9a10ff2cc777f51364.jpg

2026-06-13 13:49:50 UTC

- reply

I’m hosting a local copy of am-i.exposed and those graphs render client-side in the browser using mempoolspace api 🕶️ embedded the latest coinjoin.nl tx on the landing page using this tool ⚡️

2026-06-12 23:07:47 UTC

https://blossom.primal.net/b966121052df6512b0723a11518c2cbb3e27eec2d4c15bf6ba3a7a454af18ab9.png https://coinjoin.nl