Radivis

Science fiction writer, creator of Quantified Prestige, aspiring Lightning / Nostr developer (Rust, React, etc.).

Public Key

npub1fc3s4vcdkvpyldkckduau9wr4dn8fpg9475rcvv859djt3zuwfysvkkpx6

NIP-05 Address

Profile Code

nprofile1qqsyugc2kvxmxqj0kmvtx7w7zhp6ken5s5z6l2puxxr6zke9c3w8yjgpz3mhxue69uhhyetvv9ujuerpd46hxtnfduqs6amnwvaz7tmwdaejumr0dsugewwe

Publishing to

relay.damus.io

nos.lol

Author Public Key

npub1fc3s4vcdkvpyldkckduau9wr4dn8fpg9475rcvv859djt3zuwfysvkkpx6

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Last Notes

2026-05-05 22:59:47 CEST

Bitboard Wallet 0.1.3 now supports "amountless" Lightning payments (meaning the payer specifies the amount) via NWC. That version also features some recovery logic for persistent Esplora sync issues.
Check it out here: https://bitboard-wallet.com
#bitboard #bitcoin #lightning

2026-05-02 18:31:37 CEST

Under certain conditions persistent sync errors could appear after trying to connect to online blockchains in #Bitboard Wallet (https://bitboard-wallet.com), if starting out with a pre-0.1.2 version. Creating a new wallet under wallet management should fix those.
I'm working on a more convenient fix for future versions. These kinds of errors are annoying, but stress the importance of using seed phrases. Using the seed phrase of a "broken" wallet during import is a highly robust recovery path.
#BTC

2026-04-29 17:10:08 CEST

My interests and efforts have been mostly divided between philosophy, science fiction, economics, and software development. I just realized that as Bitcoin developer, I am actually in the intersection of all of that.
My latest project: https://bitboard-wallet.com.
#Bitboard #Bitcoin #economics #philosophy

2026-04-27 14:23:18 CEST

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Setting up an edge proxy server was not a trivial task. Lots of trial and error.
If sync still doesn't work for you, please check whether you are really on 0.1.2 in the Settings->About page. Please do a hard reload, if not.

2026-04-27 14:19:20 CEST

The Esplora sync issues are finally fixed in #Bitboard Wallet v0.1.2, because I had a nightmare about them and then did a mad 3 hour development sprint with Claude Opus 4.5 (still reasonably priced).
Check it out on https://bitboard-wallet.com
#Bitcoin

2026-04-27 07:45:14 CEST

If you try the live Bitboard Wallet app (https://bitboard-wallet.com): Connecting with live mainnet, testnet, or signet networks doesn't work due to CORS issues. I tried setting up a small proxy server for addressing that issue, but haven't got that working yet.
In other words: A productive solution probably will have to wait until after Bitcoin Conference. Developers can still try running the app in development - there everything works, because there are less moving parts.
The main selling point of the wallet should work anywhere though: The simulated "Lab" blockchain.
#Bitcoin #Bitboard

2026-04-24 13:12:38 CEST

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Nice. Will be there, too. Built https://bitboard-wallet.com during the last 8 weeks.

2026-04-23 10:39:46 CEST

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Good point. I'll have to move that from "Features" to "Future". Sorry for getting your hopes up too much.

2026-04-23 10:11:00 CEST

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It's a PWA. Have you followed the "Install App" button on the landing page? It should work for all mobile devices.

2026-04-23 09:46:16 CEST

Just released v0.1.0 of Bitboard Wallet: https://bitboard-wallet.com/
It's not the absolutely first released version, but the first version with a proper changelog at https://github.com/Radivis/bitboard-pwa-wallet/blob/main/CHANGELOG.md
Check it out. The integrated blockchain simulator doesn't even require you to create a wallet. You can skip wallet creation by clicking on Settings and then Lab. Lab transactions are displayed as cards nicely suited for mobile devices.
#Bitcoin #Bitboard

2026-04-22 11:37:02 CEST

There's a new Bitcoin PWA wallet in town: **Bitboard Wallet** ⚡
https://bitboard-wallet.com/
It's not just another wallet — it's built as an integrated Bitcoin learning and onboarding app:
• A clean knowledge base called the Library
• A hands-on tiny blockchain simulator the Lab — create users, mine blocks, send real-looking transactions
I built this to help more people go from zero to deep understanding of Bitcoin and Lightning.
Right now it supports Lightning via NWC (easy to connect). A full integrated Lightning node (Mutiny-style) is already planned.
This is a very early beta (only 7 weeks old, built agentically with Cursor). The codebase is a bit messy from the rapid pace, but the product feels solid for a demo. Non-custodial, open-source, PWA — installable on web + mobile.
If you're into Bitcoin education, self-custody, or just want to play with a blockchain simulator, check it out and let me know what you think!
#Bitcoin #Lightning #NWC #BitcoinWallet #PWA #OpenSource #BTC

2026-04-05 17:14:07 CEST

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boring

2026-03-13 17:57:36 CET

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Currently working on an educational Bitcoin wallet: https://github.com/Radivis/bitboard-pwa-wallet
I suck at marketing.
I don't believe in "Proof of human". Just use your latent telepathic abilities and verify my qualia.

2026-03-05 18:52:07 CET

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Done

2026-02-26 16:59:16 CET

I just committed my Cursor rules to my portfolio base repository. That does feel like a futuristic milestone. There's no going back from this:
https://github.com/Radivis/zero2prod-axum/pull/12/changes
This feels like the begin of the technological #singularity
#agentic #development

2026-02-26 16:45:02 CET

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Soul draining industrialism

2026-02-26 16:43:20 CET

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My canonical head cannon is $1M, because then 1 sat = 1 cent. Makes conversion easier. I just anticipate the future value of Bitcoin that way.

2026-02-26 10:55:51 CET

OpenFang looks like it's definitely one of the best candidates for dethroning OpenClaw right now. Huge pros: Deep security + batteries included.
https://x.com/Akashi203/status/2026817793165779387
https://github.com/RightNow-AI/openfang
#OpenClaw #ai #agentic

2026-02-24 13:47:05 CET

My flight to Bitcoin Conference 2026 in Las Vegas starts in almost precisely 2 months. It will be my first time visiting that convention, Las Vegas, or the USA.
I will arrive very early and leave very late, so that I can spend 10 days in Las Vegas.
This feels like a significant step since I walked out of my last full stack dev job. I've been doing a dedicated deep dive into Rust, Bitcoin, Lightning, Nostr and agentic development for the last three months.
My plan is to demo an educational Bitcoin and Lightning wallet there - mostly informally. So far, I've remained in brainstorming and planning mode on that, as I am still focused on optimizing my agentic development setup with Cursor.
I don't call myself a vibe coder. What I aim to do is "clean agentic coding", which is challenging, because agentic code tends to be quite messy without serious guardrails. Agentic workflows that produce clean, correct, and maintainable code are possible, but it does take some time to set them up properly.
Anyway, this is just an early announcement of my plans. There is much more to come.
#dev #bitcoin #lightning #agentic #vegas

2026-02-23 14:35:51 CET

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Should be continued with headache and paranoia.

2026-02-21 17:25:02 CET

Getting into Rust and "clean agentic development" as I call it tentatively has absorbed me for the last months - in addition to getting into the Bitcoin, Lightning, and Nostr primitives.
I'm planning on turning this first zero2prod-axum project into a CRM for my own portfolio.
https://blossom.primal.net/05e3ec84ccb9df736d16fefd448f7ece28596628263af3551de4cfe09d73de4a.png
#dev #rust #agentic

2026-02-10 15:03:31 CET

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I was quite fond of mathematical logic and associated fields like model theory and non-standard algebra (hyperreal numbers). Using the hyperreal numbers in math education would actually be pretty cool.
Once I made a small fractal generator with JavaScript to make the fancy images I used in the Fractal Future Forum. But that was actually rather elementary. Huh, maybe I could turn that into an actual app. Migrating it to Rust and Wasm should definitely amp up its performance.
Mostly I focused on geometry at university: Differential geometry, algebraic topology, a little bit of algebraic geometry. In my last job in geoinformatics I actually needed about zero of that, but having had that background was still nice.
Ah, and I considered coming up with a "coviariant" notation for ordinary mathematics. The usual notation is actually "contravariant" in the sense that you need to read f(g(x)) from right to left. A covariant notation would be something like x|g|f (first apply g to x then f).
Actually, I am not doing much with math right now, but focus on getting into the Bitcoin / Lightning / Nostr dev space.

2026-02-10 14:21:13 CET

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Technically, radivis.com is my homepage, but I haven't posted anything on it since 2015 in favor of focusing on the Fractal Future Forum at forum.fractalfuture.net, which is mostly used as archive now, but it's technically still a working forum. So, yeah, I've gotten rather silent over the last years with only minimal activity on Twitter / X.
What's also relevant is my GitHub at https://github.com/Radivis.
This desolate state of my online presence is bothering me somewhat. I still mostly use Telegram and Discord to stay in touch with people. Migrating everything to Nostr would be cool, but where should I even start?
Anyway, thanks for taking an interest. Is there something you wanted to discuss with me in particular?

2026-01-28 17:15:31 CET

I just found out that Claude 4.5 Sonnet is remarkably bad at simple refactoring and code cleanup. Splitting one file up into two while maintaining functionality turned out to represent a surprisingly difficult challenge for something that is mostly trivial copy and paste for humans. Amazing!
#ai #dev

2026-01-27 16:37:48 CET

I feel like I've hit the current limit of agentic development - frustratingly early. I was just trying to add some very simple Playwright end to end tests to a React app with a Rust backend. Even after 6 hours of debugging, the success rate of those tests got stuck at around 20%! So much for the skills of Claude Sonnet 4.5 (thinking) in Cursor.
Well, back to manual debugging, I guess. At least this has been a very educational experiment.
#ai #dev

2026-01-27 14:38:20 CET

Really fascinating and useful report! Especially for those who see a job in the Bitcoin space like me! #naddr1qv…jpl4

2026-01-26 10:42:48 CET

Yesterday I tried transferring some Btc from my #Binance account to my hardware wallet. In previous instances, that worked. But yesterday the transaction was flagged as high likelihood of a scam. Outgoing transfers were blocked twice for an hour!
I searched for similar stories on Nostr during the last 30 days, but didn't find any. What is going on?

2026-01-26 08:53:29 CET

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I left my comfy full-stack dev fiat job for this: Bitcoin/Lightning/Nostr. Currently learning and working on my portfolio.

2026-01-20 19:48:14 CET

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True. The Max 20x plan costs just as much as Cursor Ultra. But the latter allows for all models.
Tough call. Probably depends whether I will be more productive with Cursor or OpenCode. Not sure about that. Have to experiment a lot, first.

2026-01-20 16:03:44 CET

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Am I right that the implication of this is that retards with AIs will win?

2026-01-20 16:01:12 CET

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I think a hard fork is likely in this situation. The result would be two different blockchains: Bitcoin Data (Bitcoin Core) and Bitcoin Money (Bitcoin Knots). Each of them would have a clearly defined role, keeping both of them relatively "pure". A lot of problems would arise from such a split, but it does make sense.
If we wanted everything to be located on a single blockchain, we would probably all end up on Ethereum PoW or something similar.

2026-01-20 15:24:29 CET

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I hear you. Cursor has one interesting advantage though: If you get the Ultra subscription, you get twice the amount of credits per $, so you go all out on rapid prototyping with premium models.
So, I see myself ending up using a combination of Cursor and Opencode, depending on what I am trying to build during the respective month. After all, paying for Ultra every month feels wasteful.

2026-01-19 15:18:00 CET

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Just found this old post, and think that it's still relevant.
Do you think the situation on Nostr has changed since back then? Are there any new insights?
#naddr1qv…9zfj
#v4v

2026-01-19 10:18:05 CET

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Yeah, definitely have to check that out. What's your preferred way of using opencode?

2026-01-18 19:15:10 CET

Today I experimented with agentic development with Cursor after purchasing a Pro+ subscription costing $60 US, which pays for $60 US of tokens. The overall experience was relatively good, but checking the usage list made me think again whether Pro+ would suffice for any large project work.
Claude 4.5 Sonnet is really good, but burns $ at a rather rapid pace. For easy tasks, the custom AI agent Composer 1 by Cursor is rather sufficient.
Also, having long-winded sessions seems to push costs upwards due to ever increasing context.
Letting a second agent review what the first agent did and a third agent implement the requested fixes reduced costs to $0.50 for those steps. Compared to the roughly $20 I spent on the actual coding and debugging, that's a bargain. It was just about refactoring a small project to use a different library as dependency.
In the end, I didn't need to check the documentations of those libraries. But I needed to check the output of those agents very closely. They tend to drop functionality, if they feel it's difficult to maintain it!
#ai #dev

2026-01-18 18:56:52 CET

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This is deeply fascinating! Economics seems to explain even more than just the parts of politics we usually think about. Long read, but really worth it!
#naddr1qv…amuk

2026-01-18 10:45:02 CET

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Hell yeah, why not? I already just followed you recently!

2026-01-14 18:00:53 CET

Wow, finally zapping via Primal (or anywhere on Nostr) via NWC worked for me. The last days I thought I had distributed a dozen zaps or so. I still don't know what the underlying issue was. A combination of creating a new NWC connection, deleting the old one, and opening Primal in a new tab finally did the trick.
I don't know how I should feel about that. My feelings are quite mixed. My general user experience with Nostr has been one of much confusion and frustration. On the other hand, I feel some elation about finally having mastered the basics.

2026-01-14 10:53:41 CET

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It would have been nice to add the URL to the note directly.
For readers: It's https://syncstr.shakespeare.wtf/

2026-01-14 10:26:42 CET

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This technology seems quite useful for many applications running on the #nostr network!
#naddr1qv…ln93

2026-01-13 17:14:15 CET

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The idea of quantifying trust as threshold amount of money you expect someone to embezzle or not embezzle is quite innovative. But in a pseudonymous context large amounts of trust can only be reasonably established via reputation or personal trust.
While the idea of personal trust and its implications of transitive trust are the subject of web of trust systems, I have been thinking about decentralized reputation system for quite a while - shortly after the emergence of Bitcoin in fact.
I have developed a theoretical reputation system called Quantified Prestige, which is based on quantified esteem attributions. Only rather recently, I realized that Nostr provides a suitable basis for this system in a decentralized context. Those esteem attributions can easily be implemented as custom Nostr messages. It's just aggregation across relays and Sybil protection that require some relatively elaborate mechanisms.
The result is indeed "merely" a reputation score, but as a global starting point for interactions with unknown pseudonymous actors that's certainly a good starting point.
Here is a recent introduction to Quantified Prestige: https://yakihonne.com/article/naddr1qvzqqqr4gupzqn3rp2esmvczf7md3vmemc2u82mxwjzsttag8scc0g2myhz9cujfqy2hwumn8ghj7un9d3shjtnyv9kh2uewd9hj7qq4w4352dj2w3gxunm2g364s6zpwfexjjm6tqt2dsd9

2026-01-13 15:05:01 CET

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Linking my #introduction article:
https://primal.net/e/naddr1qvzqqqr4gupzqn3rp2esmvczf7md3vmemc2u82mxwjzsttag8scc0g2myhz9cujfqq25z4632uux26n9ffzhxan5f34rw6r0wpuh5rjm0gn
It seems to me that articles need to get mentioned in notes to reach significant attention. Anyway, the #nostr learning curve is still quite steep in 2026.

2026-01-13 14:28:47 CET

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This approach is similar to the ideas I had for Quantified Prestige. In the basic version of that system there are only esteem points to be allocated to others. But I considered adding "special esteem" to the "general esteem", which would allow for rather specific contextual information about the implied reputation.
Here is a recent general introduction of Quantified Prestige: https://yakihonne.com/article/naddr1qvzqqqr4gupzqn3rp2esmvczf7md3vmemc2u82mxwjzsttag8scc0g2myhz9cujfqy2hwumn8ghj7un9d3shjtnyv9kh2uewd9hj7qq4g9t4z4ecv44x2jj9wdm8gnr2xa5x7ure0gd34djq

2025-12-21 19:42:36 CET

Test. My first post on Yakihonne.