The โ‚ฟOSS Challenge is back ๐ŸŽ‰ Start your career in bitcoin open source software (โ‚ฟOSS) and change your life forever. Serious about a career in bitcoin open source software? Do you dream of professional freedom? Do you want your work to have a profound impact? Are you looking for some of the most challenging engineering problems? Take the โ‚ฟOSS Challenge and start yourself on a new path image - - - - - - - - - - - - - - - - - - - - - - - - - - - - - โ“ HOW DOES IT WORK? โ“ The challenge kicks off the week of January 12 ๐Ÿ—“๏ธ 30 days to complete a series of code-based technical challenges ๐Ÿ›ฃ๏ธ 2 additional months for anyone willing to continue the adventure If you are willing to do the work, we'll give you what you need to get to where you want to go. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ๐Ÿง‘โ€๐Ÿคโ€๐Ÿง‘ LEARNING IS BETTER WITH FRIENDS ๐Ÿง‘โ€๐Ÿคโ€๐Ÿง‘ Thatโ€™s why weโ€™re delighted to announce โ‚ฟOSS Challenge partnerships with: - @Btrust - @npub1m495...u22l - @npub13vk4...m2ah - @BOBSpace_BKK - @Code Orange Dev School - zzmjxy in China - My Satoshis in Burundi ๐ŸŒ Live in one of these regions? Reach out to connect with others doing the โ‚ฟOSS Challenge! - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Funding for bitcoin open source development is earned by demonstrating proof of work. There is no cheat code. ๐Ÿงก Come do the work and good things will happen. ๐Ÿงก The โ‚ฟOSS Challenge gives you structure while fostering the proactive, self-starter spirit that is required in open-source. Join the challenge. See how far you will go. Change your life in 2026. โฐ Applications close: December 31 ๐ŸŽฏ Program begins: January 12 ๐ŸŒŽ Open to everyone. Totally free. Application: bosschallenge.xyz #bitcoin
Well, we finally did it. We got a logo for the Bitcoin Dev Project got a logo and a new website to match it. image For the last few years you have trusted the Bitcoin Dev Project (BDP) to bring high quality, open-source tools and education to the developer community. Today, as a symbol of our ongoing commitment to this mission, we are proud to reveal a fresh look. ๐ŸŒฟ ๐ŸŒฟ ๐ŸŒฟ Letโ€™s start with the pangolin in the room Yes, that is a pangolin. Is this unexpected? Yes. Is it intentional? Very much. Pangolins are solitary, curious creatures known for their armour-like scales and quiet determination. Like the best open-source contributors, they build, explore, and protect what matters. To us, they represent the kind of thoughtful, persistent energy we see in the bitcoin dev community every day. image ๐ŸŒฟ ๐ŸŒฟ ๐ŸŒฟ How it began In 2023, BDP was born from a desire to build for the developer ecosystem. We created efficiency boosting tools like Bitcoin Search and ChatBTC. From there, a suite of educational products and even games emerged with things like Decoding Bitcoin and Saving Satoshi. This past year we rounded our offerings out with the Common Application which helps contributors apply for funding. image BDP has been lovingly designed to serve the developer community in a way that is approachable and encouraging, yet without compromising the hard work and discipline required of bitcoin development. There is much more to bitcoin tech than what is seen at the surface. That is why we created BDP to be a place where you can grow your technical skills without the noise. Anyone in the world should be able to participate in bitcoin development. If you do the work, BDP is there to help you reach your goals. image ๐ŸŒฟ ๐ŸŒฟ ๐ŸŒฟ A reimagined website Youโ€™ve seen the logo but thatโ€™s not all. This makeover goes far beyond that. Instead, the BDP website has been completely reimagined to deliver more moments of delight, improved navigation, and easy access to our tools and resources. The new illustrations, icons, and vibrant color palette are all inspired by the pangolinโ€™s natural habitat. With an earthy, nature-inspired theme, the website is warm and inviting, reflecting BDPโ€™s goal of being a welcoming entry point into bitcoin development. image Despite all the changes, youโ€™ll still find the things you have come to expect from BDP: learning material, developer tools, and funding guidance. BDP provides new opportunities for you to explore and take meaningful steps toward becoming a bitcoin developer. image ๐ŸŒฟ ๐ŸŒฟ ๐ŸŒฟ Design secrets For more on how the logo and website came to life, check out this blog post by our amazing designer Sanya. ๐ŸŒฟ ๐ŸŒฟ ๐ŸŒฟ From the bottom of our hearts, thank you. Weโ€™re deeply passionate about the work we do and grateful for your support. To those that donโ€™t know us: While getting confused with BDK is arguably a good problem to have, we hope youโ€™ll stick around and get to know us. Weโ€™re in this for the long haul and would love for you to join in the adventure.
Reminder that there is still time to apply for the Bitcoin Scholarship! Contribute to bitcoin and get a full year of your college tuition covered in return. Open to applicants anywhere in the world. Sound too good to be true? Meet the 2025 winner, Ishaana Misra. image Ishaana taught herself C++ in high school and became the youngest contributor to Bitcoin Core in the process. She is now a freshman at MIT and president of the MIT Bitcoin Club. Congrats Ishaana! Her story shows that even as a student you can make meaningful contributions to bitcoin. Ready to apply for the scholarship? Click the link below!๐Ÿ‘‡
๐Ÿ“ฃ ICYMI: Chaincode Labs is (again) awarding a scholarship to attract the brightest minds to work on bitcoin. ๐ŸŽ“ The scholarship covers 100% tuition for an undergraduate anywhere in the world. Last year's winner started at MIT last month. Applications close soon. Don't let this opportunity pass you by! More details can be found here ๐Ÿ‘‡
Did you know, the bitcoin-dev mailing list has over 20,000 posts going back to June 2011? If each post takes 30 min to read (on average), thatโ€™s over 400 days of nonstop reading! To be fair, 1๏ธโƒฃ Posts aren't easily searchable 2๏ธโƒฃ If a thread spans multiple months back it can be broken 3๏ธโƒฃ Your inbox probably has enough emails competing for your attention Things can easily go ignored & unread. Few, if any, can say they have read it all. For the rest of us, we started working into a way to download the mailing list straight to your brain. While we havenโ€™t quite figured that out (yet), we've built the next best thingโ€ฆ Meet ๐Ÿ“š Bitcoin TLDR v2 ๐Ÿ“š, a collection of summaries for the bitcoin-dev, lightning-dev, and Delving Bitcoin mailing lists. โžก๏ธ tldr.bitcoinsearch.xyz The mailing lists are known for being some of the best places to get updates on bitcoin development. ๐Ÿ”จ Itโ€™s where the builders go to propose new ideas, gather feedback, and hash it out. Whether you are trying to stay on the cutting edge, or are catching up on bitcoinโ€™s rich technical history, Bitcoin TLDR is made for you. TLDR summarizes every individual mailing list post while also creating summaries at the thread level. With daily updates, thread summaries remain fresh based on new replies so you never miss a beat. ๐Ÿ‘€ Visit the Active Discussions section to see whatโ€™s trending: image If youโ€™re already subscribed to the mailing lists but feel overwhelmed, try out the Bitcoin TLDR newsletter. Itโ€™s got weekly summaries of all the latest activity, providing a manageable way for you to stay on top of it all. image How Does It Work? - The Scraper Repo This scrapes through Delving Bitcoin and the Bitcoin Dev Mailing List, fetches mailing list pages, and stores them locally. A parser processes those files to extract clean metadata and message content. Finally, an indexer pushes the structured documents into an index in Elasticsearch for search and analysis. - The Summarizer The summarizer repo has two main parts. First, it makes sure Elasticsearch always has the latest full thread data by syncing the combined XML files. Second, it adds short AI summaries to posts that donโ€™t have one yet. This way, Elasticsearch stores both the complete thread summaries, and individual post. Third, it creates AI summaries for the full thread, creating a combined summary. - The TLDR Frontend This renders summaries for each thread and post, and displays them with a beautiful UI. - - - - - - - - - - - - - - - - - - - - - - - - - - - - Bitcoin TLDR is completely free and open-source. Itโ€™s designed to help more people engage with high signal bitcoin and lightning tech discussions. Give it a try and let us know what you think! โžก๏ธ tldr.bitcoinsearch.xyz
๐Ÿš€ ICYMI we recently launched a common application for bitcoin grants! Apply for funding once. Reach multiple bitcoin grant organizations. Are you a bitcoin open-source software (โ‚ฟOSS) contributor? Are you tired of filling out multiple applications for funding? Now you donโ€™t have to. The Common Grants App is one application that gets you in front of: - @OpenSats - @Spiral - @npub1353s...gajp - Brink - Maelstrom - - - - - - - - - - Hereโ€™s how it works: 1. Fill out one form 2. Pick the orgs 3. Submit 4. Each org receives your app 5. They contact you if they are interested - - - - - - - - - - Why this matters: โœ… Saves time โœ… Saves effort โœ… Reach 5 bitcoin funding orgs โœ… No duplicate work More time building. Less time on the paperwork. โŒ No chasing 5 different forms across 5 sites โŒ No unnecessary overhead โœ… One unified application flow - - - - - - - - - - Whoโ€™s it for? - โ‚ฟOSS contributors - App builders - Educators - Privacy researchers - Anyone building for Bitcoin - - - - - - - - - - Built with โ™ฅ๏ธ by @Bitcoin Dev Project Big thanks to @npub1smxq...2tda, @npub1w484...lvz2 , @satsie ๐Ÿ‡น๐Ÿ‡ญ ๐Ÿ‡ฑ๐Ÿ‡น - - - - - - - - - - Ready to apply? ๐Ÿ‘‡
๐Ÿงฐ Too much bitcoin tech knowledge is trapped in videos and podcasts If only there was an easy way to unearth those insights and gemsโ€ฆ ๐Ÿค” We wondered that too, so we redesigned Bitcoin Transcripts! ๐Ÿš€ image ๐Ÿ” Bitcoin Transcripts is a filterable library of transcripts from: โ€ข dev meetups โ€ข conferences โ€ข podcasts โ€ข panels Skim talks, quote insights, and search by keyword. All in one place. ๐Ÿ‘‰ โ›๏ธ Missed a workshop or podcast episode? No worries. You can now quickly search by keyword or topic and read the conversation in minutes instead of watching hours of video, Accelerating your speed to insights. ๐Ÿง‘โ€๐Ÿซ Bitcoin Transcripts is perfect for: - bitcoin devs digging into prior research - educators creating content - researchers analyzing protocol history or - enthusiasts who prefer reading over listening Taproot workshops, Lightning panels, itโ€™s all in there. Open-source and built by the community ๐Ÿงก This project stands on the shoulders of contributors like Bryan Bishop () who manually transcribed hundreds of talks. Now, with modern tools, we can scale that effort for the whole community. image Many thanks to our contributors: - Dev: @npub1madm...4djz , Jamal (), Emmanuel (), @npub1w484...lvz2 - Data & architecture: Andreas (), Urvish () - Vision: @npub1dq94...2pg8 - Design: Tobi (), Khush (), @npub1nxy5...lnxl - Product: @npub1a6n3...s58k - Inspiration: Bryan Bishop () Whatโ€™s next? Weโ€™ll keep adding transcripts from upcoming events and backfill any important historic talks we missed. ๐Ÿ” Would love your help editing transcripts as well. Dive in, explore, and let us know what you think! ๐Ÿ‘‡ btctranscripts.com
Slots are filling up fast for our Warnet track at Friday's #MITBitcoinExpo Hackathon! We stand up a network of Bitcoin Core nodes. You use Bitcoin Core's functional test framework to write attacks in Python and take them down. This event is open to hackers around the globe. Participants can be in-person or remote. And did we mention the $3,000 prize from the MIT Bitcoin Club? ๐Ÿ‘‰ Head over to to sign up today! image We'll also have weโ€™ll have additional prizes for Warnet track winners that are able to join in person. These gorgeous coasters by A+ Engrave are just one example! ๐Ÿคฉ
๐“๐ก๐ž ๐๐ข๐ญ๐œ๐จ๐ข๐ง ๐ƒ๐ž๐ฏ ๐๐ซ๐จ๐ฃ๐ž๐œ๐ญ ๐ก๐š๐ฌ ๐š ๐ญ๐ซ๐š๐œ๐ค ๐š๐ญ ๐ญ๐ก๐ž ๐Œ๐ˆ๐“ ๐๐ข๐ญ๐œ๐จ๐ข๐ง ๐„๐ฑ๐ฉ๐จ ๐‡๐š๐œ๐ค๐š๐ญ๐ก๐จ๐ง, ๐š๐ง๐ ๐ข๐ญ ๐ก๐š๐ฌ ๐š $๐Ÿ‘,๐ŸŽ๐ŸŽ๐ŸŽ ๐ฉ๐ซ๐ข๐ณ๐ž! Participants have 30 hours, starting April 4 and are welcome to hack from around the globe. ๐ŸŒ We repeat, you do not have to attend in person ๐ŸŒŽ ๐Œ๐จ๐ฌ๐ญ ๐ก๐š๐œ๐ค๐š๐ญ๐ก๐จ๐ง ๐ญ๐ซ๐š๐œ๐ค๐ฌ ๐š๐ซ๐ž ๐š๐›๐จ๐ฎ๐ญ ๐›๐ฎ๐ข๐ฅ๐๐ข๐ง๐ , ๐›๐ฎ๐ญ ๐ง๐จ๐ญ ๐ญ๐ก๐ข๐ฌ ๐จ๐ง๐ž. ๐“๐ก๐ข๐ฌ ๐ข๐ฌ ๐š๐›๐จ๐ฎ๐ญ ๐›๐ซ๐ž๐š๐ค๐ข๐ง๐  ๐Ÿ”จ For the Bitcoin Dev Project track, the goal is to take down the bitcoin network. We stand up a network of bitcoin core nodes. You and your team take down as many as possible. Whichever team brings down the most in the shortest amount of time wins. Monitor extreme and yet unknown network behaviors, discover vulnerabilities, and build a stronger, more resilient bitcoin. image This track is for hackers with some level of coding skill, & the ability to use the command line interface (CLI). Familiarity with Bitcoin Core, esp. the JSON-RPC interface is useful. A general understanding of how blockchains and distributed networks work will come in handy. Who's ready to win? Sign up below! ๐Ÿ‘‡
New tool in Decoding Bitcoin! REORG CALCULATOR โš’๏ธ Computes the probability that an attacker could reorganize z blocks with a given % of the total network hashrate Hereโ€™s the probability of an attacker reorganizing 6 blocks with 30% of the total hashrate image