Oddbean new post about | logout

Notes by Hynek | export

 Remember, remember … 
 Looks very stable. Just like all stablecoins.. 
 I'm juggling a dozen world changing cypherpunk products in my mind. 
We need moar devs to build t... 
 Let’s build the idea pool/marketplace 
 Do you know any #bitcoin testnet4 faucet? 
 Poor man's poll: Is it

A) e-cash 
B) ecash 
C) eCash 
D) none of the above 

?  
 ecash is the simplest. Just like internet or bitcoin (not Internet, BitCoin and so on) 
 There are more options to be fair. For example Ark or Channel Factories 
 Good points. This is really challenging topic 
 TOO MUCH CONCERN OVER LACK OF KEY ROTATION.

NOT ENOUGH FOCUS ON HARDWARE SIGNERS AND MULTISIG. 
 Yes, exactly 
 Nice materials to understand technical side of #bitcoin
https://bitcoindevs.xyz/decoding 
 Yes 🙂 
 Now I see that @mempool is already using similar visualization. 

They have it logically at the level of a specific address. I assume it’s correctly because they don't want people shoving xpubs in there. https://image.nostr.build/3abbe5881c96be621192ddaf019b9a32ee11e00ae2e0a731502332aaef5522de.jpg  
 Veliký respekt @Matyas Kuchar  a @owletek  👏

ChainCamp v nejlepším končí. Tak to má být. Ne čekat, až to vyhnije jako některé jiné projekty. Radši pěkně s hrdostí to zakončit a uvolnit tak prostor dalším. Jít se soustředit na věci, kde vidíš největší potenciál. Předpokládám, že kluci se budou soustředit o to víc na @BTCPrague.. Ale kdo ví, třebas nás překvapí ještě něčím jiným. 🤞

https://youtu.be/7L2jH2Yv9ds?si=8C-CcaSK14GVoGnU 
 Here's some sound advice for those wanting to write good software:
nostr:nevent1qqspw54eumwlzqnwx... 
 Smart 
 I wrote a web app that visualizes your bitcoin: 
https://coiner-mu.vercel.app/

There's almost nothing you can do there yet, and you still need to have Trezor to do so, and it's only for Testnet as of now. 🫣

The most interesting feature so far is the ability to merge more of your pending transactions. You can save on fees by doing this, but they're beautifully low right now anyway. #needbettermarketing

Anyway. If someone would like to use it, there are plenty of improvement opportunities. From the visible modifications for example:
- Include foreign child transactions in merging
- Offer the ability to easily merge small utxos
- Add bulk transaction cancellation
- Add #bitcoin mainnet

Let me know if you find it handy… https://image.nostr.build/9eae700ea3b2a366369cdc9dc0fba39b594bd5843dfb3502a816f22292e6a415.jpg  
 Here is the repo including more screens:

https://github.com/hynek-jina/coiner 
 It’s kind of rare.. But the case with child transactions could be quite frequent. (Not implemented yet) 
 Are your transactions confirmed or approved? 
 I'm happy for any improvements to the #bitcoin wallets → But I'd be even happier with common useful applications that utilize the bitcoin.

Likewise, I appreciate every bitcoin conference → But I would be even more excited to attend, for example, a family festival where bitcoin is used for all payments. 
 @Kruw, You are legend 🔥

This interview is really blessing 💪
https://www.youtube.com/watch?v=v952Fd1vmOs

#jesuismoneytransmitter 
 Fiat is good for spending only if you have some (which you shouldn’t) AND others are still willing to accept it.

…see Tiers law and use #bitcoin 💪 
 Pravda, ale zrovna tyhle komentáře mi připadají v pohodě. Když tě někdo musel zachraňovat, tak to zaplatíš. 
 Jasný. Souhlasím. Koncept trestu je dost pitomý. 
 🇨🇿 Kocourkov. Na Facebooku jsem přesdílela nabídky typu "kdo nemá kam jít, zavolejte a... 
 Politik chce mít kontrolu a dobrý PR. Způsobené škody nevnímá 🫠 
 OK friends, I currently have my fortune (lol) parked on #Coinbase .
Is that smart or...??
Getting... 
 Exchanges are trap 🪤. 
Find your peer in local community. See @twentyone.world or use @vexl 
 The advantage of entrepreneurship is you can't be fired.

The disadvantage of entrepreneurship is... 
 You are just closer to your customers. So you receive the feedback more gradually… 
 That sounds terrifying 🫣 
 Is there anyone working on channel factories?

Or do you know about anyone? 
 Maybe we need more demand first 🤔 
 Bitcoin layers overview:

https://www.bitcoinlayers.org/

Most of them are somewhere between scam and useless tool, but probably it’s too early to judge. 
 Quite precise number. So I guess you respect Lightning Network only, right?

You don't give some hope to the Ark? 
 Tohle nejdou altcoiny, ale chápu, ze je to podobný 
 I'm currently on a 1,871 day GitHub contribution streak 🤓 
 Sounds like hardcore version of the Duolingo 
 I appreciate your work, but Liquid is a trap. 
 Thank you for your question. Here is my perception:

Liquid
- 🟠 All fee goes to Liquid Functionaries (15)
- 🟠 Any combination of 5 functionaries can paralyze the Liquid
- 🔴 After two weeks (I think) can Blockstream steal all the Liquid funds
- 🔴  Liquid is vulnerable to governments

Ecash
- 🟢Fees are decentralized
- 🔴 Any mint can steal the funds
     - 🟢But there can be huge competition - anyone can run a mint
     - 🟢 Users can withdraw their funds anytime - immediately → unchain or on lightning
- 🟢 Ecash brings new value → can be shared with anyone - without previous action - for example via message
- 🟢 It enables simple interaction with Lightning Network 
 So it’s not 2 weeks, but 4.032 blocks (circa 28 days)
For more info see: https://help.blockstream.com/hc/en-us/articles/900001408623-How-does-Liquid-Bitcoin-L-BTC-work 
 Simplified view could be that:
- Liquid is like new central banking
- Ecash is like new free banking

Both have advantages and disadvantages. And I’m a strong advocate of free banking in this dilemma. But real bitcoin is best of course. 
 I don’t see the direct link to my points. 

1. Fees go to Functionaries, right? Or maybe to Federation members, but it doesn’t make huge difference..

2. I agree that Liquid federation might be the best federation in the space, but still. Any 5 of them can steal all the funds. If government will push, they can do whatever they want with Liquid - and all the locked bitcoin.

3. Ecash is not that mature and anyone can steal there.. But we can build tools to make it inefficient. And it can be way more resilient. 
 1. I would argue that Liquid fees are not decentralized.
2. Government attacks can be fast without supporting legislation. See samurai or tornado cash cases as an example.
3. True, but I still think that Liquid is more vulnerable. It’s only few entities. With e-cash it can be simply hundreds of thousands. That doesn’t apply to Liquid (it wouldn’t scale than…) 
 Life finds a way.
If you are using @damus on iPhone, you can activate the #zaps with this simple website: https://zap.army/

Damus will behave than just like before the Apple went crazy… 
 KYC as a Know Your Custodian could be actually pretty handy for #cashu Wallets🤔

Proofs of reserves? Reviews on nostr? Something else? https://image.nostr.build/3afa8bcb5448ecab0fe90a855060cbfa99167724903992b7618aa18e4943ed69.jpg  
 I know about these two so far:
https://bitcoinmints.com/
https://cashumints.space/

I just think that more insights are needed and to have it inside the cashu wallet would be pretty handy. 
 Leave the mess where it belongs… 
 První ročník jsem taky vynechal s tím, že to bude určitě o shitcoinech 🫣 
 I'm preparing a workshop for the best local #bitcoin conference @ChainCampCZ . My topic will be `UTXO management`. And here's a rough outline:

- Privacy vs efficiency
- How to save on on-chain transactions
    - Script-type
    - Bulk transactions
      - Plus merging of the following pending transactions
    - Prevent small change
	- Send the change to swap, ln, or just throw in another input.. or use it to migrate to a newer account
- Identify well the size of the fee 
	- check details on mempool.space
	- don't be afraid to offer low fees - can also be used as address verification
- What is the optimal coin size structure?
	- How the coin selection algorithm works?
- Payment via coinjoin
	- BTCPay server
	- how to use Trezor
	- Manual coinjoin via Electrum
	- Manually setting up a transaction with Bitcoin Core 
 Great points! 
Thanks 
 The nostr is bigger than the bitcoin 
 If you have to choose one. Would it really be a nostr? 
 Na @ChainCampCZ je vypsaných spoustu nových workshopů. A mám docela problém. Jednak budou určitě často už obsazený a taky je občas poměrně těžký se rozhodnout, kterému dát přednost..
No a tak než pojedu do Ostravy, tak si jdu kroužkovat jako Jiřina Bohdalová před tím než jde do Penny.

1. Michal Novák - Taproot assets - Stable coins na LN - Stable coiny jsou podle mě distrakce, ale vím, že Michal je hooodně chytrý. Navíc tam můžou být zajímavé informace i o lightningu samotném
2. Tomáš Sušánka - Základy kryptografie pro bitcoin - To doporučuji už jenom proto, že Suši je můj šéf v Trezoru. 🙃 Pokud nevěříte, že to bude skvělý, tak se podívejte na jeho přednášku na podobné téma z letošního BTC Prague 🤯 Velmi jednoduché a užitečné pro chápání souvislostí.
3. iWarp - Cashu a ecash nad LN - Na tenhle workshop bych chtěl hodně jít. Ecash je kontroverzní. Mám k němu milion výhrad, ale zároveň v tom vidím obrovský potenciál. Hlavní problém pro mě je, že tou dobou povedu workshop o UTXO managementu, tak se můžete stavit i za mnou, pokud bude na ecashi plno…
4. Josef Kříž - Nostr - Nostr asi tady na nostru všichni znáte,.. ale Pepa by mohl dát praktický tipy, jak ho použít v dalších aplikacích.. 
5. Michael Haase - Úvod do světa multisig peněženek - Bohužel se to kryje s Pepou, tak nevím kam se budu nakonec snažit dostat víc. Michael to bude mít určitě velmi pečlivě zpracovaný a má veliký přehled.

Spoustu dalších workshopů bych taky velmi doporučil i navštívil.. Záleží, co vás zrovna zajímá - nejde sledovat úplně všechno.. Snažil jsem se jich vybrat jenom pár, aby byla šance, že si to vůbec přečtete..

Co doporučujete vy? https://image.nostr.build/b41bb4995d15690e44ebf2d46149f8b78467b49ba967ae952bbf52bc9401cab1.jpg  
 Mě tohle hodně zajímá. Bavíme se o tom nepřímo mimo jiné s @Michael  a par dalšími lidmi. Pojďme určitě nasdilet myšlenky a poznatky🙏 
 Technically you can coinjoin directly with your Trezor 
 It’s a bit hacky, but life finds a way…

https://wasabi.kravens.nl/#trezor 
 Letošní @ChainCampCZ bude pro mě trochu o návratu ke kořenům. Potkáme se na Technické Univerzitě v Ostravě stejně jako naposledy před třemi lety. Právě tam jsem se Kristiánovi svěřoval, že už nechci jenom celý den v práci mluvit o#bitcoinu, ale aktivně na něm pracovat. A možná i částečně díky ChainCampu se mi to po pár měsících splnilo a nastoupil jsem do skvělé firmy Trezor.

Už před lety mě na ChainCampu fascinovala diskuze s neznámými lidmi - se společným zájmem. Většina obsahu bude letos představena na workshopech. Tam se můžete snadno zapojit nebo si klidně tiše sedět v koutě. Je to velmi inspirativní a dá se jít i víc do hloubky než na velikých konferencích. 

Jediný problém je, že je to velmi náročný a dlouhý den. Doporučuji se dobře vyspat 😉

Potkáme se letos? 
 Looks like you’re missing Trezor Safe 3 in your arsenal 😊 
 Fuck it, I'll write my own lightning wallet.  
 This is the way 
 Skvělá přednáška o vnitřní vs vnější svobodě 

https://fountain.fm/episode/S745LZy4MKTH4THkzI12 
 👍 I did the same months ago and now I’m slowly preparing myself to quit other SM completely nostr:note1wqjz9g6lejjlpre0rlu0k9z24kc4daagnt42lsrys9gv9rnsd9sskest44 
 Beautiful research about #bitcoin scaling. 👏
Eventhough I think we need more than one transaction per user and year.. 

https://petertodd.org/2024/covenant-dependent-layer-2-review 
 ok i wanna know: what’s missing in your bitcoin life?? 
 Adoption and Tools 
 I spent the last two weeks at the camp with about ten other families. Nothing special, but it was nice to see how kids are more independent in such a group than at home.

Of course we paid for our stay with #bitcoin …
https://btcmap.org/merchant/node:12135799173