Join us on Wednesday, 20th May, for a Twitter Space as we celebrate the Q1 Builders Pathways cohorts and explore what it takes to get started in the Bitcoin open-source ecosystem.🎉 We’ll unpack lessons from the pathways, highlight the progress builders have made, and discuss the next steps for anyone looking to grow from learner to contributor. If you’ve been curious about contributing to Bitcoin open source projects, this conversation is for you. Date: Wednesday, 20th May Time: 5pm UTC/ 6pm WAT/ 8pm EAT Set a reminder here and we'll see you then: https://x.com/i/spaces/1dxYljwgedZJX

The first pathways of 2026 are officially wrapped up, and it’s been incredible to see how much this community has grown. 🚀 Over March and April, 265 developers from 24 countries took part in Mastering Bitcoin and Bitcoin CLI; learning together, helping each other, and working through deep technical material. By the end of the cohorts, 37 participants graduated from the live tracks, with many more continuing their journey through the self‑paced pathways. We’ve put together a full recap of what happened this quarter and what’s coming next for the Builders community. Read the full update here: https://blog.btrust.tech/celebrating-the-q1-2026-pathway-cohort-graduation/

Next week, the Q2 pathways are set to begin. 🚀 This quarter, developers will be joining Rust for Bitcoiners and Language Clubs. Rust for Bitcoiners 🦀 is designed for developers who want to deepen their Rust skills. The pathway focuses on building the Rust knowledge needed to engage with Bitcoin projects, with curated resources, structured weekly progress, and support from peers and faculty along the way. Language Clubs focuses on strengthening programming fluency in languages commonly used in Bitcoin development. The pathway helps developers build the language foundations that make meaningful open‑source contribution possible later on. Participants work through curated learning tracks while learning alongside peers in a supportive environment. Both pathways emphasize peer learning, structured progress, and practical skill development. We’ll also be using the hybrid engagement model designed to support more developers without compromising the learning experience. Each pathway will be running in two formats: a live cohort and a self‑paced track, giving developers more flexibility in how they participate while still benefiting from the Builders community. To learn more about the pathways and join our community, start here: https://www.btrust.tech/builders/apply Apply to join the waitlist for future cohorts here: https://btrust.homerun.co/btrust-builders-application/en

We’ve reached the final week of the Bitcoin CLI live cohort, and today marked our last live session together. 🧡 Over the past 6 weeks, participants have been working directly with the Bitcoin command line interface to better understand how Bitcoin works at a deeper technical level. This final week focused on expanding Bitcoin scripts and designing Bitcoin scripts. In chapter 12, participants explored how Bitcoin scripts can include conditions that change how funds can be spent. Instead of having only one way to unlock a transaction, scripts can be written so that different rules apply depending on certain conditions. For example, one spending path might require a signature, while another path could activate after a certain condition is met. In chapter 13, the focus shifted to examples of Bitcoin scripts and how developers actually design them. Participants looked at scripts that act like puzzles, where funds can only be spent if the correct answer or condition is provided, and more complex multisignature scripts that require approval from multiple keys. These examples helped demonstrate how the different pieces of Bitcoin Script come together to control how funds move on the network. Throughout the week, participants reviewed the study materials, met with their partners to discuss the questions, and began working on the technical capstone project, which brings together many of the concepts explored throughout the cohort. 🚀

And that's a wrap for the Q1 2026 Mastering Bitcoin live cohort! 🎉 Over the last 7 weeks, we’ve worked through key chapters of Mastering Bitcoin and built a deeper understanding of how the Bitcoin protocol functions under the hood. This week we wrapped things up with chapter 13: Bitcoin security and chapter 14: second‑layer applications. Chapter 13 focused on how users can safely protect their bitcoin. Unlike traditional financial systems where banks secure accounts on behalf of users, bitcoin gives individuals full control over their funds through private keys. Because of this, security becomes the user’s responsibility. The chapter covered important practices such as protecting private keys, creating reliable backups, and reducing reliance on third parties. It also introduced approaches like hardware wallets and multisignature setups that can help improve the security of stored funds. In chapter 14, we explored how systems can be built on top of Bitcoin to make transactions faster and more scalable. The chapter introduced several building blocks within bitcoin transactions, such as timelocks, multisignature scripts, and programmable spending conditions, which enable more advanced applications. It then explained payment channels, which allow users to transact many times off‑chain while only recording the opening and closing transactions on the blockchain. This concept forms the foundation of networks like the lightning network ⚡, where payments can be routed through multiple channels to enable fast and low‑cost transactions. Throughout the week, participants reviewed the assigned materials, collaborated with their partners, and worked through discussion questions to deepen their understanding. During the live session, participants shared insights with the group, and the faculty guided discussions around key ideas from the readings.

We just wrapped up week 5 of the Bitcoin CLI live cohort.🧑🏾‍💻 This week the cohort went deeper into Bitcoin scripts and explored how more advanced spending conditions are built into transactions. In chapter 10, participants learned how Bitcoin scripts are embedded into P2SH (Pay-to-Script-Hash) transactions. This introduced a new way to lock funds using custom scripts while keeping the transaction itself simple. The cohort explored how P2SH works, how multisig scripts are constructed, and how different SegWit script variations interact with these structures. By the end of the chapter, participants understood how funds sent to a P2SH address can later be unlocked by revealing and satisfying the script. In Chapter 11, the focus shifted to timelocks inside Bitcoin scripts. Participants learned how scripts can control when funds become spendable using two important opcodes: CheckLockTimeVerify (CLTV) and CheckSequenceVerify (CSV). These tools allow developers to create more flexible conditions, such as delaying spending until a certain block height or enforcing relative time delays. Throughout the week, participants completed technical exercises, collaborated with their assigned partners, and prepared discussion responses. During the live study session, participants shared their insights and the faculty helped guide group discussions around the week's topics.