Bitcoin Ubuntu 🧡⚡🇿🇦

#MaxiMadness Node Region 🧵

Want to contribute to Bitcoin, but don't know where to start? We built contribute.btcpayserver.org 💚 Step by step guidelines and good first tasks to tackle, across our entire organization of 70+ repositories. Start building your Bitcoin career today!

Bitcoin bear markets are telling: they separate tourists from real builders. I'm here for the signal, not mindlessly reposted propaganda or ill-informed takes on the latest "current thing". Unfollowing the easily distracted is doing wonders for my feed.

Kids did it again 🧡 One more Bitcoin node was set up by Kids in a school in El Salvador. Setting up a node is the end of our 7 weeks curriculum but the beginning of their Node runners path 🙏 We're the real proof of results in 🇸🇻, share the news.

BREAKING: SQUARE TO AUTO-ENABLE BITCOIN PAYMENTS FOR MILLIONS OF SELLERS Square will auto-enable Bitcoin payments for all eligible sellers starting March 30, 2026, according to an updated Terms of Service notice sent to users. The change means millions of businesses using Square could soon begin accepting Bitcoin by default, rather than opting in manually. The rollout is part of Block’s broader push to integrate Bitcoin payments across its ecosystem, leveraging the Lightning Network for fast, low-cost transactions. Sellers will still have the option to disable the feature or automatically convert Bitcoin to USD at the point of sale. With Square powering millions of merchants globally, this marks a major step toward making Bitcoin a standard payment method in everyday commerce.

@Pleb_Style Panic buy before it runs higher.

You wake up and you see this. What do you do first?!

Taxation is theft—not metaphorically, but literally. The state takes your property under threat of violence without your consent. And the fact that they call it "social contract" doesn't magically transform robbery into virtue. Private property precedes government.

Bitcoin Optech newsletter #396 is here: - describes a collision-resistant hash function using Bitcoin Script - summarizes continued discussion of Lightning Network traffic analysis - Optech Newsletter #396 Podcast bitcoinops.org/en/newsletters…

Iran just told the world it will reopen the Strait of Hormuz to oil tankers, but only if the cargo is paid for in Chinese yuan. Not dollars. This is the clearest signal yet that the petrodollar system is fracturing, and that bitcoin's value proposition as neutral, non-sovereign money has never been stronger. 20% of the world's oil flows through Hormuz. That's 21 million barrels per day. And now a major oil chokepoint is being used to force a currency switch away from the dollar. 1. Iran is blocking most tanker traffic through Hormuz amid the conflict with the US and Israel 2. China is already Iran's largest oil buyer, a ready-made counterparty for yuan settlement 3. Russia, Saudi Arabia, and Brazil have all been settling energy trades outside the dollar over the past two years The petrodollar isn't dying in one dramatic moment. It's being chipped away, one bilateral deal at a time, by countries that want out of a currency controlled by Washington. But running from the dollar to the yuan is just switching one master for another. The only money no government can weaponize, freeze, or inflate away is bitcoin. 21 million. No borders. No sanctions. No strings.

Our little buddies always ask the same thing: “Where can we get sats?” ⚡ And with that, 2026 begins! 😉Cohort 5 with 29 new Bitcoiners joining the network. 🚀 @MyFirstBitcoin_ @blinkbtc @BitZed_

The only way to defeat the government is to stop using their money.

@BenJustman @BullBitcoin_ Trying to get @ZeusLN to the party in 2026

Why isn't Payjoin the standard? @BullBitcoin_ can't be the only ones

People often ask us, "Why put my seed phrase on a nylon washer?" The answer is: nylon is another option. Passing a border, making a temporary travel wallet you can sew in your clothes, getting past metal detectors...you never know 🤷‍♂️

I was the editor for the finnish translation of this book back in the day This was one of the books that really convinced me that bitcoin is unstoppable A lot of bitcoin books are the same But not this one, this is an unique story and reporting on very specific case, it’s also very well written Read it, it’s very very timely

Jade is the first Bitcoin cold wallet to interact with Lightning. ⚡️ To celebrate, we're giving away $500 in bitcoin. To enter: 🔔 Follow @BlockstreamJade 🔁 RT this post 👍 Like this post Winner announced on Wednesday, March 18th at 2 PM EST.

Yesterday, we dove deep into Chapter 9 – The Technical Side of Bitcoin led by Glenn from @BitcoinUbuntu. We started with the fundamentals of cryptographic identity, exploring how public and private keys create a secure, trustless system for ownership. It’s incredible to see how digital signatures serve as an invisible proof of authenticity, protecting your funds without ever revealing your private keys. Next, we tackled the UTXO (Unspent Transaction Output) model. Unlike traditional accounts, Bitcoin works more like physical cash—splitting and combining "pieces" of bitcoin to form new transactions while meticulously accounting for every satoshi. We then met the gatekeepers of the network: - Nodes: The "digital traffic cops" that validate transactions and enforce the network's rules. - Miners: The "architects of security" who use Proof-of-Work to compete for block hashes and secure the blockchain. From the "waiting room" of the Mempool to the pre-programmed scarcity of the Halving, we saw exactly how Bitcoin remains decentralized and uncorrupted. Key takeaways: - Digital Signatures: Your proof of ownership and authenticity. - UTXO Model: The foundation of transparent, traceable transactions. - Nodes & Miners: The dual force for decentralized security and validation. - Proof-of-Work: The mechanism that makes the ledger tamper-proof. #bitcoin #bitcoineducation #bitcoinCommunity #ProofOfWork

We have finally completed Chapter 8: Introduction to the Technical Side of Bitcoin! ⚡₿ A big thank you to our wonderful tutor, Mr. Glenn Jooste from @BitcoinUbuntu who made these technical concepts simple and easy for the students to understand. The students were very curious, asked many insightful questions, and some even earned sats for answering questions correctly! 🧠⚡💡 Learning Bitcoin is always more exciting when knowledge meets incentives. 😉 See you again next week as we begin Chapter 9. Stay tuned! 🚀📚₿

Jon McAlpine, Antoine Poinsot (@darosior), Mike Casey (@theblackmarble), and Ethan Heilman (@Ethan_Heilman) joined Optech to discuss Newsletter #395: News ● A standard for stateless VTXO verification (1:31) ● Draft BIP for expanded `nVersion` nonce space for miners (1:23:45) Changing consensus ● Extensions to standard tooling for TEMPLATEHASH-CSFS-IK support (13:52) ● Hourglass V2 update (25:40) ● Algorithm agility for Bitcoin (51:15) ● The limitations of cryptographic agility in Bitcoin (1:05:15) Releases and release candidates ● Bitcoin Core 28.4rc1 (1:36:53) Notable code and documentation changes ● Bitcoin Core #33616 (1:38:30) ● Bitcoin Core #34616 (1:42:23) ● Eclair #3256 (1:46:20) ● Eclair #3258 (1:48:34) ● Eclair #3255 (1:50:14) ● LDK #4402 (1:52:27) ● LND #10604 (1:53:56) ● BIPs #1699 (1:55:34) ● BIPs #2106 (1:57:30) ● BIPs #2068 (2:01:28) ● BOLTs #1301 (2:04:54)

As the Btrust Builders program continues to grow, we’ve learned that scale should never come at the cost of quality or faculty well‑being. That’s why our 2026 pathways introduce a new hybrid engagement model designed to serve more developers without compromising the learning experience. In 2026, each pathway runs in two formats: a high‑touch live cohort and an open self‑paced track. This approach allows us to combine structure and flexibility, giving every developer a way to learn that fits their experience, schedule, and goals. 🧵👇