Hynek

Public Key

npub1lz8xv2dnyryrk4vswkcgf52vqqzruqwuyp53s7pvusx4fef9fh2s7hh86s

NIP-05 Address

Profile Code

nprofile1qqs03rnx9xejpjpm2kg8tvyy69xqqpp7q8wzq6gc0qkwgr25u5j5m4gpz3mhxue69uhhyetvv9ujuerpd46hxtnfduqs6amnwvaz7tmwdaejumr0ds0avghn

Publishing to

relay.damus.io

nos.lol

Author Public Key

npub1lz8xv2dnyryrk4vswkcgf52vqqzruqwuyp53s7pvusx4fef9fh2s7hh86s

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Last Notes

2026-10-15 14:03:42 UTC

🍕 You can now pay with bitcoin at Pizza Scuola in Prague! 🎉
Come give it a try — their pizza is delicious!
https://pizza-scuola.cz
https://image.nostr.build/23ea3c2d1dc59653316c6572b6a7b1736c05faebf9c1d925e9807d67cf0b147b.jpg

2026-10-13 17:24:45 UTC

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Merchant by merchant.

2026-10-13 17:12:32 UTC

Another business in Prague now accepts bitcoin 🎉
Flower shop - Libeňská květinka 💐
https://btcmap.org/merchant/43123
https://image.nostr.build/9f4901f8dc4360f481597babfc639f023dd4147b2fe7a2c2fa76623380c9f30c.jpg

2026-10-01 09:18:31 UTC

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@nprofile…w0lp is similar concept

2026-10-01 09:18:02 UTC

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Fair. We didn’t invent proxy.
Payment takes ~2 min. So it’s not usable in a hurry as of now.
However there is an idea to set a personal bot for payer. You give him limited fiat access and it stacks for you within seconds.

2026-10-01 07:00:30 UTC

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Check the video for the proxy payment demonstration:
https://youtu.be/9zRPQu2SOec

2026-09-04 16:09:53 UTC

@npub1jw7…35fg is there an option to use different fiat value than USD?

2026-08-25 06:02:53 UTC

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Just running node has no power.
Power of nodes is in transactions produced by these runners.
And that is yet another reason to utilize bitcoin.

2026-07-09 03:41:52 UTC

Reálně se všichni ještě bank občas dotkneme, ale jde to dobrým směrem. 💪
#nevent1q…l34j

2026-07-08 03:15:57 UTC

Seems like spark is being implemented into many apps these days.
I appreciate their work but still it feels like a vendor lock, since there is basically only one spark service provider.

2026-06-11 08:08:53 UTC

Feels like bitcoiners are finally pushing harder for real world usage of bitcoin 🔥
https://image.nostr.build/8bb7cc9f0a9dd264e3ffd889bcb244d88ed1bb9b7e0c201b1c79a4040c722db9.jpg

2026-06-11 06:57:10 UTC

Let’s meet today on @npub167n…zu3r 🔥
 Today I will have a nice panel session with @npub1864…t2tq master - @npub1cn6…wt8a 🚀
Who knows where the discussion will progress, but I would like to discuss mainly bitcoin adoption. Examples what works and what doesn’t. Hope to see you there 🫵
https://image.nostr.build/a45598deab59d25807dcab817e4bfeae9c31f542b36cbf0b4c41c4c1cefd4962.jpg

2026-06-10 05:44:32 UTC

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Is it really a blocker?
Cashu/lightning seems quite private

2026-06-10 04:04:19 UTC

Why do bitcoiners tend not to pay with bitcoin? Making a bitcoin transaction with an “ordinary” person often seems surprisingly easier to me...
#asknostr

2026-06-08 14:22:18 UTC

Don’t miss the chance to visit Zlaté Sele during your @npub167n…zu3r trip.
https://btcmap.org/merchant/5710
#nevent1q…d9qf

2026-05-30 03:36:45 UTC

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Yes. Execution is the difficult part

2026-05-29 03:35:57 UTC

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True, but it’s more healthy to focus on building 🫡

2026-05-29 03:33:27 UTC

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Real life payments - grass-root adoption.
But if you mean technically then for example:
- cashu in secure enclave
- ark
- utreexo - I wish it could enable true LN in phone and then almost forgotten channel factories
Visit @npub16u0…qpwk if you are looking for more inspiration.

2026-05-24 04:42:18 UTC

@npub1mhc…c226 do you have some plans with npub.cash?
It’s super useful tool, but development seems to stopped?

2026-05-22 13:21:14 UTC

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🎯 Yes.
Graham is well misunderstood.
- It says nothing about preferred money. Only that subjective value beats the nominal. And btw there is also effect of Thiers law which works in opposite direction.

2026-05-22 13:15:53 UTC

Exactly. Most people don’t understand opportunity cost.
#nevent1q…lzxw

2026-05-01 17:35:27 UTC

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Aren’t you describing Numo?
https://numopay.org/

2026-04-30 05:48:28 UTC

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Hopefully someone will raise the flag and vibe code better alternative 🤞

2026-04-30 05:43:41 UTC

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Keep calm and use @npub1v5u…n0v5 ?
Or mp3 for music I guess? 😬

2026-04-22 03:51:01 UTC

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Get rid of fiat

2026-04-21 05:33:15 UTC

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How is active address defined?

2026-04-20 05:53:57 UTC

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Interesting point. I think that it depends on your perception of previous state. If you think it’s evil, you probably want to switch it as fast as possible.
Some people can find evil even diesel cars - I don’t. But fiat system is in my eyes purely evil and therefore I wish bitcoin to voluntarily replace it.

2026-04-19 19:20:50 UTC

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How do you mean that?

2026-04-19 17:31:49 UTC

We are building the best tool for people who don’t even know yet they need bitcoin 😀

2026-04-19 11:55:18 UTC

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Better key storage for cashu wallet - @npub1kkh…jvz8

2026-04-16 07:00:02 UTC

Trezor Suite is introducing Suite Sync. 🎉
Now you can label wallets, accounts, addresses and having that synchronized between various devices without any email. Privately and only based on your hardware device.
https://trezor.io/guides/trezor-suite/suite-sync
And desktop now supports BIP-329 labels exports and imports. Mobile hopefully following next month.

2026-03-22 10:38:30 UTC

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Delivery is still demanding…

2026-03-17 04:34:35 UTC

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You can’t vibe code a plant yet 🙂

2026-03-15 16:01:53 UTC

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Sounds great 🔥

2026-03-15 14:39:17 UTC

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Tech is mostly helping to reveal lies. The future might be very bright.

2026-03-15 14:27:48 UTC

I’m reading Humankind and it’s surprising how good and kind people actually are.
And that only fews are trying hard to turn us against each other.
https://image.nostr.build/b808a559768470d5b680e71d2d0993cea7262f93aec6d6009a803c0d87c9f3ea.jpg

2026-03-11 05:35:11 UTC

Improving app daily. Aim is to build the best tool for onboarding your friends and family into bitcoin.
#nevent1q…hkds

2026-03-11 04:50:37 UTC

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I’m building @npub1kkh…jvz8
Cashu wallet and messenger. Tool for onboarding your friends and family.

2026-03-08 19:57:50 UTC

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Great news. When is the release planned?

2026-03-08 05:38:40 UTC

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Using default relays. Damus, nos, and primal

2026-03-08 05:26:18 UTC

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Now I see 👍 reaction

2026-03-08 05:24:54 UTC

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I don’t see the message from you

2026-03-08 05:17:08 UTC

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Have you received my message?

2026-03-08 04:58:22 UTC

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Does it work smoothly to you?
I’m not able to send a message 🤷

2026-03-08 04:35:29 UTC

Running White Noise

2026-02-19 14:34:19 UTC

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Looks promising, but still missing the top tier models

2026-02-19 13:36:43 UTC

What is the best way to purchase best ai models for sats instead of medieval KYC fiat?

2026-02-11 07:10:51 UTC

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It’s already over

2026-01-08 21:37:32 UTC

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It is interesting direction (meaning the self-custody of commerce), but we all must prioritize

2026-01-08 20:57:50 UTC

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I think that Umbrel is close to that:
https://umbrel.com/

2026-01-08 16:05:30 UTC

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All these harming regulations will push us to find better solutions

2026-01-08 15:32:00 UTC

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Tested.. no additional KYC was requested - only delivery address.

2026-01-08 15:24:42 UTC

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Ok, then it sounds really stupid.. Will need to test it..

2026-01-08 15:08:29 UTC

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Give it a try. 😉
I see no KYC request...
https://image.nostr.build/dd2d43351111bdf377b157119b202003068412b0a4a1a69fb97d6a4ee2facf9d.jpg
https://image.nostr.build/e162673b18ecd8437430547dda33d6e3d8cc9866e8d713bc1a35068ad0d12a91.jpg

2025-12-31 08:23:14 UTC

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This!

2025-12-30 10:57:26 UTC

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Do you like nostr protocol? I think that existing content shouldn’t be the reason to not be here. You can start creating the better one.
And btw nostr is not only social network…

2025-12-27 19:07:53 UTC

Cash mints are charging fees even if you transfer within the same mint?
#asknostr

2025-12-27 11:42:06 UTC

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Nice.. This looks very good 💪
I currently miss only two small things
1) Ability to use same the account on more devices (mobile and desktop). It works with messages (via nostr), but not with cashu balance. It could be implemented with some local-first protocol. I like https://github.com/evoluhq/evolu most.
2) Using `nsec` instead of words is slightly limiting using other tech - like mentioned local storage, but also bitcoin onchain addressed for example. It could be derived probably even from `nsec`, but it’s not standard.

2025-12-26 08:38:24 UTC

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Thx. I’ll have a look 👀

2025-12-26 05:35:40 UTC

I’ve done some more testing and I wasn’t able to find a solid solution for contact payments - ideally combined with messaging. Do I miss something?
@npub1n03…h0ky @npub17fz…9yxv @npub1wht…r3ec @npub1ref…64x3
https://image.nostr.build/a767ae5ec83f6316c48f811759b85a859651862d8dfa12d6fdd1cd4911eade33.jpg

2025-12-23 20:03:57 UTC

Would I be able to interact with @nprofile…sp3z users from its fork?

2025-12-23 19:28:26 UTC

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This always selects Telegram 😞
https://blossom.primal.net/8f8599ecfa4f7becfab5854d6189beaa4373649518d82f612899246df5cf493f.png

2025-12-22 20:21:03 UTC

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OK, it could be.. I just don’t see such option there..

2025-12-22 20:03:00 UTC

What is the meaning of this BTC pill in cashu.me wallet?🤔
https://blossom.primal.net/f3cd171b2d984398692fb546848cf8d1b3c501bcf58faa30ecc581170e0d0fa7.png

2025-12-20 09:04:42 UTC

Finally we have a motivation for upgrade on another level
https://blossom.primal.net/ed285a6eaca450d969c4c7f3ea0bcbd9db36857f49ffb6aedc74685f5fd95264.png

2025-11-19 06:50:12 UTC

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Sorry there is mistake in article. Will be updated soon.
Bootloader is signed with ed25519 not ecdsa

2025-11-19 05:18:09 UTC

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The Trezor Safe 7 boardloader uses a hybrid scheme:
Signed with both SLH-DSA and ECDSA (secp256r1).
The ECDSA signature also signs the SLH-DSA signature.
It is described in more technical details here https://trezor.io/guides/trezor-devices/trezor-safe-7/going-quantum

2025-11-17 08:32:24 UTC

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I made a typo in the link. Here is the correct one..
https://docs.wasabiwallet.io/using-wasabi/RPC.html#payincoinjoin

2025-11-16 18:15:19 UTC

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Ok. Than I will continue reckless 😀

2025-11-16 17:25:04 UTC

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Nice, thx

2025-11-16 16:56:52 UTC

Is there any testnet coinjoin coordinator?
#asknostr #asknostr

2025-11-16 06:11:34 UTC

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Would be nice to have a UI for it.
- Basically send as is - just use conjoin
- Maybe offer rounding of amounts to standard denominations…
Next time I will test batch transaction… 👀

2025-11-16 05:46:41 UTC

Payincoinjoin with Wasabi is nice.. and works 👏
Ihttps://docs.wasabiwallet.io/using-wasabi/RPC.html#payincoinjoin

2025-11-11 06:38:07 UTC

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Great news. We just need more people willing to pay with bitcoin…
#nevent1q…yvv9

2025-11-06 08:16:10 UTC

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This is really great initiative. Do you have some respond from Signal? Are they interested somehow?

2025-11-02 16:35:52 UTC

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You can use @nprofile…fyt7 for whatever you want. Even monero

2025-11-01 10:00:54 UTC

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It was divided in more visits, but basically yes.

2025-11-01 09:40:50 UTC

I’d like to share a story about adoption with you.
Lately, I haven’t been able to find time for meetups because of family and work, so I decided to focus on lunches instead. In a regular local pub, I asked the owner if he’d be willing to accept Bitcoin. He politely declined.
I kept going there about once a week. After a few visits, I made an NFC card and loaded it with 1,000 sats as a tip. I also gave him a leaflet with instructions on how to access the Bitcoin. He’s an older gentleman, not very interested in technology, and doesn’t have much time for experiments while running the place. The following week, I tipped him another 1,000 sats. On the third week, he finally agreed to let me install a mobile wallet app for him.
Suddenly, he had a bit of Bitcoin in his Wallet of Satoshi. I asked him if I could start paying that way — with the promise that if it didn’t work out, I’d exchange it back into cash for him. He wasn’t too keen at first, but since I was a regular, he wanted to make me happy.
From that moment, I announced in the local Jednadvacet (our Czech version of Einundzwanzig) community that we’d meet for lunch every Thursday. A short meetup — a chance to exchange Bitcoin, learn something new, meet people, etc. The only condition: payment must be in Bitcoin.
Two months have passed since then. The group has been growing. At first, there were just three of us. Last time, there were already seventeen. For the owner, it’s become a significant part of that day’s revenue. He’s started treating us better too — now he greets us from afar and even reserves the biggest table for us every Thursday, not letting anyone else sit there.
Every time I ask him if everything’s okay, if he wants to cash out, or needs any help with it. And you know what he told me last time? That he doesn’t need to — it’s growing nicely in Bitcoin. He even recently bought a fridge with Bitcoin. He said he had to use Lightning because he ran into some issues with on-chain. I never even mentioned the word “Lightning” to him. He’s been learning on his own, and now he’s become quite the Bitcoiner.
It looks like the pub might soon turn into a nice little vexl point — a place where people can exchange Bitcoin for dirty fiat and vice versa.
I’m writing this because I think it’s a great blueprint. It’s short, takes me about an hour a week — time I’d spend on lunch anyway — I meet people, and it helps Bitcoin adoption in a very natural way. Hopefully, it’ll inspire more Bitcoiners to try something similar in their own area.

2025-10-22 08:05:25 UTC

Can you type a swear word using swipe typing?
On my iPhone, it keeps autocorrecting everything — in every language.
For example, in English, instead of “fuck,” it always writes “duck.”
And it won’t let me type any word like that at all…
Swear words have their place, and this Orwellian bending of reality drives me crazy — it just makes me need to use those words even more. 🤬

2025-10-22 07:59:40 UTC

Great video.. I would just add few more options
- @npub1mft…rkl3 is the best for P2P - nonKYC bitcoin
- Conjoin works even with the Trezor hardware wallet - you don’t need to use hot wallet
- Wipe code is more straightforward alternative for trick pins
- Multi-share (aka Shamir/SLIP39) offers better options compared to XOR - you can set the required threshold - so it’s fault tolerant
- Be careful with border wallet.. it’s not a good practice.
- More things are in the pipeline….We can talk about them if you are interested.
#note1due…adfh

2025-10-21 15:24:57 UTC

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Don’t blame the tool for stupid action

2025-10-21 08:48:15 UTC

Trezor Safe 7 is here 🔥
https://trezor.io/

2025-10-20 04:38:08 UTC

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kinetictender139@walletofsatoshi.com

2025-10-17 04:23:40 UTC

Bitcoin directly in Signal would be really awesome 🤩
https://bitcoinforsignal.org/

2025-10-13 10:38:48 UTC

Something is happening at Trezor…
https://content.trezor.io/trezor-reveal

2025-09-27 19:14:42 UTC

Few ideas how to improve Wallet of Satoshi:
https://stacker.news/items/1239637/r/hynek

2025-09-16 20:37:33 UTC

🎯 If you are studying economics and they are not teaching Sowell, Friedman, Mises, Rothbard, Hayek and Bastiat, "you are not getting an education: you are getting an indoctrination. And you are being scammed"
https://xcancel.com/ydemombynes/status/1967913195810799650

2025-09-13 05:54:19 UTC

Interesting insight from Nepal:
https://xcancel.com/rachinkalakheti/status/1966314602251301138

2025-09-10 06:40:18 UTC

Lidi sedí ve vězení 8-12 let kvůli tomu že pěstovali pár kytek.. Žijeme v absurdistánu… Soudce taky chápe, že to je barbarství, ale stejně je odsuzuje, protože je prostě takový zákon.
Kdo dává přednost zákonu před morálkou…. ...není morální..
Jak chcete jednou svým vnoučatům obhajovat, že “takový byl prostě zákon”?
https://www.youtube.com/watch?v=wqE3E2eHPpo

2025-09-04 12:23:01 UTC

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He was brilliant

2025-08-31 11:56:53 UTC

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Nothing at shitcoin casino makes any sense (for people)

2025-08-31 09:11:35 UTC

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Přesně tak 😂

2025-08-31 09:00:39 UTC

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Já pamatuju leccos 😂