Barcelona Bitcoin Only (@bcnbitcoinonly) header
Barcelona Bitcoin Only (@bcnbitcoinonly) profile picture

🟠 #Bitcoin & #LightningNetwork⚡️ Community in BCN 💬Telegram: https://teapawt.org/t.co/ryeFQmLj7O 🤝 Founding Member: https://teapawt.org/t.co/XIBDgzWiSj 📺 https://teapawt.org/t.co/Pn1Cg5f9d7

Barcelona, Spain
Joined March 2022
Photo by Barcelona Bitcoin Only (@bcnbitcoinonly)Photo by Barcelona Bitcoin Only (@bcnbitcoinonly)Photo by Barcelona Bitcoin Only (@bcnbitcoinonly)Photo by Barcelona Bitcoin Only (@bcnbitcoinonly)Photo by Barcelona Bitcoin Only (@bcnbitcoinonly)Photo by Barcelona Bitcoin Only (@bcnbitcoinonly)Photo by Barcelona Bitcoin Only (@bcnbitcoinonly)Photo by Barcelona Bitcoin Only (@bcnbitcoinonly)
Barcelona Bitcoin Only retweeted
18 years of Bitcoin. Thank you, Satoshi — what an incredible journey.
169
594
76
3,034
116,375
Barcelona Bitcoin Only retweeted
Seriously, if you don't have a trusted HWW, you can use an offline computer instead. Imagine your only HWW is a Trezor and your exchange is Binance 💀 An old PC with thunderden.com as an air-gapped signer, paired with @SparrowWallet, is much safer than this advice.
2
6
21
1,919
Barcelona Bitcoin Only retweeted
1/8 🚨 There's a fundamental problem with how we distribute security updates today. The moment a software patch is released, it can also become a roadmap for attackers. We need to rethink how security updates are delivered. 🧵
3
6
4
35
11,228
Barcelona Bitcoin Only retweeted
Acabo de recibir una llamada brutal de PHISING desde un número de teléfono español, de alguien con acento de España. El tío controlaba. Le he seguido el rollo todo lo que podía aunque me hervía la sangre: 4 o 5 minutos. Se hacía pasar por Trezor. - Tenían mi número de teléfono, mi nombre y mi email. - Desde este numero: 622 748 592 - Al final me hacía ir a trezormanage (punto) io. Supongo q esto acababa con el pidiéndome alguna frase semilla. - Me escribía emails durante la llamada con links desde support@trezor via inbox-management (punto) com - Vamos, q no era desde trezor. Tenía todos mis datos. Me jode pero en algún momento he metido la pata con mis datos, está claro. No tengo ninguna trezor, además. La conversación ha acabado diciéndole que ya paraba la broma y q como podía vivir con la vergüenza de robar a la gente y si puede dormir por las noches. Es increíble que haya escoria de este calibre por el mundo, pero es así. Cuidado si recibís alguna llamada.
47
64
4
484
201,072
Barcelona Bitcoin Only retweeted
𝗕𝗶𝘁𝗰𝗼𝗶𝗻 𝗦𝗲𝗶𝗻𝗳𝗲𝗹𝗱: 𝗧𝗵𝗲 𝗗𝗼𝘂𝗯𝗹𝗲 𝗦𝗽𝗲𝗻𝗱 George likes his Bitcoin friends but he also likes his non bitcoiner friends, can he manage them both?
Bitcoin not Crypto George makes a new friend, or does he?
54
205
30
1,347
129,698
Barcelona Bitcoin Only retweeted
I'm working on this exclusive badge for Bitcoin Amsterdam @bitcoinconfams A complete multifunction badge! - Proof of peer - Zap indicator - Seed generator - NerdMiner Works with battery and has a perfect badge case What do you think? Book here 👇 share.google/galtSkEFoTXtuot…
30
44
9
293
19,207
Barcelona Bitcoin Only retweeted
En remoto funciona y es cuando más importa la conexión TLS. Necesitarás crear un certificado para tu servicio de Electrs (o el que sea), y configurar el puerto 50002. Un ejemplo es el maravilloso servicio del nodo de @bcnbitcoinonly ssl://electrum.bitcoinbarcelona.xyz:50002
1
1
3
150
Barcelona Bitcoin Only retweeted
Tenim un altre BitDevs el dia 27 d'octubre!! bitdevsbarcelona.org/socrati… Recordeu que podeu proposar temes obrint una issue al github del BitDevs: github.com/Bit-Devs-Barcelon…
5
1
7
516
Barcelona Bitcoin Only retweeted
Intentant mantenir el llegat de Satoshi i Hal Finney
3
28
787
Barcelona Bitcoin Only retweeted
Convert an old x86 laptop into a hardware wallet. I've been working on my vision of how this should be done for some time now. It's called THUNDER DEN. - 100% stateless: inspired by @SeedSigner. Boots from a pen drive. - Airgapped by design, with wallet data exchanged through QR codes. - Descriptor-based, including (tap)miniscript. - You can easily audit it before use: it's tiny and only does one thing. Only around 3,800 lines of code, so AI can reasonably help check it. The Bitcoin logic comes from pinned Bitcoin Core, which is widely scrutinized. - Reduced attack surface: the image is only around 14 MB + padding. In those tiny bytes I packed a super stripped-down Linux system and only the Bitcoin Core libraries it needs. No desktop, no GUI. No network stack, block-storage or USB-storage drivers or disk filesystems. The runtime uses RAM-backed filesystems. Check the repo to learn about the other protections included. - Super easy to build your own image. You can also download my prebuilt images, if you trust me (don't). - A laptop gives you a decent camera, a full keyboard and a large screen, making policies and keys comfortable to read and menus easy to navigate. - Go hardcore: get an old laptop and remove its disks and disable radio chips for even better security. - Wallet integrations so far: @lianabitcoin through a current fork, and @SparrowWallet. More are coming. The nice thing is that all the code is Open Source. So if you find a bug or a compromise you don't like, you can submit a PR or fork it. Still in beta. Some pics below. PS: It doesn't generate recovery words for now, so you'll need to import your existing mnemonic. It's coming, though. It's just that I really want to make sure this is properly done before releasing that part :-P
19
14
7
88
10,010
Barcelona Bitcoin Only retweeted
Nou article! El meu veí ha comprat bitcoin, i no s'entera de res. El problema no és ell, sinó la cultura de la immediatesa en la qual vivim. Trobar temps per entendre les coses tranquil·lament s'ha convertit en un acte gairebé revolucionari senyrauxasats.substack.com/p…
3
8
1
28
1,296
Barcelona Bitcoin Only retweeted
Seinfeld Bitcoin Highlights 🎬₿ A montage of all the Seinfeld Bitcoin clips so far! If you’ve been enjoying them, please retweet and follow. More on the way.
155
578
124
2,999
407,647
Barcelona Bitcoin Only retweeted
Tornem de vacances! Com sempre tenim Bitdevs l'últim dimarts de cada mes! 29 de setembre :) bitdevsbarcelona.org/socrati…
2
5
1
12
1,765
Per obrir la temporada arrenquem amb una trobada que sempre ens fa il·lusió recuperar: Bitcoin per a principiants. Què és això de Bitcoin? Per parlar del tema i respondre les vostres preguntes, comptarem amb en Jan Martínez, expert en la matèria. + info: meetup.com/bitcoin-barcelona…
4
11
794
Barcelona Bitcoin Only retweeted
🟥 URGENT: Critical vulnerability in Core Lightning Blockstream developers urge users to shut down CLN Lightning nodes right NOW! Please let everyone know!
165
775
184
1,973
442,798
Barcelona Bitcoin Only retweeted
Habemus post! 🇬🇧 (ENG) How to use Bitcoin Core in an air-gapped setup to build, sign, and broadcast transactions. pesvi.xyz/posts/bitcoincore_… |Català| Com utilitzar Bitcoin Core com a dispositiu "air-gapped" per construir, firmar i transmetre transaccions. pesvi.xyz/catal%C3%A0/posts/…
I am seeing a lot of people talking about Bitcoin Core only setups. I am writing a blog post, soon to be published, with a guide on how to build that step-by-step. Credits to @402PaymentReq as the guide is a slight modification of his guide in YouTube.
4
16
2
32
2,711
Barcelona Bitcoin Only retweeted
gained a ton of new insights working in bitcoin red team 🟥 that i wish i could share without vague posting. but this is what i got anon. - we’re experiencing a massive collision between decades of human open source slop against 2 weeks of kimi k3 (not good) - everything is broken, bitcoin is burning - bitcoin is becoming stronger through this - bitcoin is the obvious first target but the rest of the world will follow shortly - sometimes old things need to burn so new things can grow on healthy soil - humans should never code in c (just stop) - lightning is complicated and is more broken than the average (sorry) - verification is free. we used to complain about slop PRs. then about slop security audits. if you can’t handle the information overload, stop complaining and use AI to sort through it. - those projects that started AI audits months ago are in a completely different position than those who didn’t - projects need their own AI audit pipeline going into the future - the burden for a developer to keep software safe and secure is pretty stressful and not for everyone. it has become a lot more stressful now. - unmaintained projects are most probably broken, don’t rely on them. i’d rather one-shot it myself with a modern AI - multiple concurrent, diverse human approaches have proven to be the best vulnerability search method - external red teaming will probably have to continue forever - we’ve basically completed a basic scan of virtually the entirety of bitcoin open source. the low hanging fruit is done. - we’ve reported a ton of real critical and high vulnerabilities. project maintainers across the board have validated our findings. - response speed is very different across projects and shows how healthy each project is. i recommend acting fast these days. - red team etiquette matters. if you don’t disclose responsibly, boast on twitter about your findings on a particular project, or make indications about the nature of particular findings, you’ve disqualified yourself as a serious security researcher. trust is the most important factor in this game. if you lose it, it’s very hard to win it back. - did i mention that humans should not code in c? love you all.
211
560
99
3,459
375,924
Barcelona Bitcoin Only retweeted
There is a critical vulnerability being actively exploited on BTCPay Server, which can result in the loss of funds. Please update your BTCPayServer to 2.4.2 by going to Admin Dashboard -> Server -> Maintenance -> Update & verify the 2.4.2 version string in the footer. If you are unable to update right away, turn off your BTCPay Server to prevent unauthorized access until you can update.
215
1,350
519
2,549
1,618,823