🏆 BOSS Battle 2026: We have our winners! Four weeks of building, problem-solving, and shipping code. Three tracks. One open-source mission. But first, a thank you to every builder who showed up and made this what we envisioned. You made BOSS Battle happen. 🧡 Meet our winners: 🔐 Cypherpunk | Bitcoin Privacy 🏆 Haystack by Yogesh - Wallet privacy through decoy addresses. 🔗

GitHub

GitHub - yogesh0509/Haystack: Private Electrum Sync

Private Electrum Sync. Contribute to yogesh0509/Haystack development by creating an account on GitHub.

🤖 Machine Money | Bitcoin + AI 🏆 Infernos by Team Nigeria 🇳🇬 - Permissionless AI inference, paid with Lightning. 🔗

GitHub

GitHub - infernos-ai/infernos: Permissionless AI inference, paid with Lightning

Permissionless AI inference, paid with Lightning. Contribute to infernos-ai/infernos development by creating an account on GitHub.

🌐 Freedom Stack | Nostr + Ecash 🏆 EcashMesh by Ayush - One payment layer for different ecash sources. 🔗

GitHub

GitHub - bansalayush247/ecashmesh: Trust-aware routing and interoperability for Ecash.

Trust-aware routing and interoperability for Ecash. - bansalayush247/ecashmesh

Congratulations to our winners! And to every runner-up and participant, thank you for building in the open. Your work matters. Now, let's take this energy to Jaipur. 🔥 BOSS Winter Summit | Oct 27–29 Our last few spots are available at ₹2,499, including BOSS access, lunch, and evening snacks. 🎟️ Get your pass:

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🧡 Bitmela | Oct 30–31 Use code BITSHALA21 for 15% off your pass. 🎟️

Bitmela · See Money Like You

India

Watching from the sidelines and stepping into the arena are two very different things. It's your time to show up, build, and become part of the journey. See you in Jaipur!

🟠 Chennai Meet-up | 17th October | 4-6 PM You press 'Send', your transaction is pending, & then it gets confirmed. But what happens in between? - Who decides which block includes your transaction? - Why do fees matter? - And what happens when a transaction stays unconfirmed? Join Bitshala for a hands-on session using mempool.space to watch Bitcoin transactions move through the network in real time. 🎟️ Register now:

Bitcoin: Watch It Work · Luma

Limited seats on First Come First Serve Basis A hands-on exploration of Bitcoin using mempool.space What actually happens when you send bitcoin? Yo...

Are you certain your hardware wallet is as secure as the manufacturer claims? Bitcoin Hardware & Sovereignty Club | Today · 8 PM IST | 2:30 PM UTC Join host Shivam Gupta for a technical deep-dive into the latest supply-chain vulnerabilities and the critical methods for physical hardware auditing. 🔹The $90M Breach: How compromised resellers distributed tampered devices to execute automated, synchronized wallet drains. 🔹Parasitic Spy Chips: A look at how attackers embedded Nordic cellular modems onto OLED signal lines to intercept recovery phrases in plaintext. 🔹Hardware Auditing: Practical tips for using precision scales and non-destructive X-rays to spot foreign components and verify PCB integrity. 🔹Eliminating Trust: Why multi-vendor multisig (Ledger + Trezor + Coldcard) and direct factor y sourcing are the only ways to ensure true sovereignty. 📍 8 PM. Only on Discord:

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Today’s Bitshala Club How is Bitcoin upgrading its peer-to-peer privacy? Latest in Bitcoin Tech | Today · 8 PM IST | 2:30 PM UTC Today, we’ll dive into: 🔹BIP 324: The v2 Transport Protocol. 🔹v1 P2P vs v2 P2P: A comprehensive overview of the upgrades. 🔹Cryptographic Foundations: The math behind v2 P2P security. 🔹Trade-offs: Analyzing security properties and current limitations. 📍8 PM on Discord:

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🟠 BITSHALA PUNE MEETUP Bitcoin Cryptography: From Private Keys to Digital Signatures This Saturday, 17 October 2026 | 5 - 7 PM How does Bitcoin verify ownership without asking you to 'trust' anyone? The answer lies in cryptography. But understanding it means going beyond the interface and into the mathematics and code that make Bitcoin work. And that's the topic of discussion for this week's meetup. We will dig deeper into: Entropy & Private Keys: How keys are generated and why randomness matters. Digital Signatures: How ownership can be proven without revealing private keys. UTXOs & Transactions: How Bitcoin tracks spendable value and authorises transactions. Network Verification: How transactions are checked against Bitcoin’s rules. If you're a developer, an engineer, or a technically curious builder ready to understand Bitcoin beyond the surface, you'll find your people here. 🎟️ Reserve your spot:

Bitcoin Cryptography: From Private Keys to Digital Signatures | Deccan, Pune · Luma

Ever wondered how Bitcoin actually secures hundreds of billions of dollars without relying on banks, governments, or central authority? It all come...

A few moments from our Mumbai workshop: Privacy on Bitcoin! We explored how on-chain analytics works, how transaction patterns can expose identities, and what tools and practices can help improve financial privacy. Key highlights from the session: Chain Analysis: How transaction patterns and external data can link Bitcoin activity to real-world identities. Privacy Tools: Exploring CoinJoins with Wasabi wallet and Coinswap transactions with OpenSwap. Advanced Techniques: Stonewall transactions, Payjoin (BIP78), and Silent Payments (BIP-352). Identity Protection: Exploring BIP47 and PayNyms to reduce address reuse. Thanks to everyone who joined us to go deeper. More to come! Want to keep learning with us? Join the Bitshala Discord for study clubs, workshops, and updates on upcoming city meetups. ➡️

Discord

Discord - Group Chat That’s All Fun & Games

Discord is great for playing games and chilling with friends, or even building a worldwide community. Customize your own space to talk, play, and h...

Why do global monetary orders rise, dominate, eventually change & what can their history teach us about the future of money? Join Bitshala Reading Club today as we wrap up Part 3 of Broken Money by Lyn Alden, exploring the evolution of the international financial system and the forces that shape monetary power. 📖 Week 4 | Friday, 9 October | 8 PM IST Whether you’ve been with us along from Week 1 or are joining for the first time, you’re welcome to join the discussion. 📍 8 PM only on Discord:

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Last week, we explored Schnorr Proofs of Knowledge. Tonight, we go deeper into ECDSA and see exactly why nonce reuse is so dangerous. A 256-bit private key can be protected by some of the most sophisticated mathematics in Bitcoin. But reuse one nonce & the math can give the private key back. We’ll break down: • Fiat-Shamir: How interactive proofs become signatures • ECDSA: The signing equation, security properties, and its evolution toward Schnorr and Taproot • Nonce Reuse: How two signatures can reveal the private key, step by step Join the Cryptographic Foundations of Bitcoin club tonight at 8 PM IST with host @sha512rma. 📍8 PM only on Discord:

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Discord - Group Chat That’s All Fun & Games

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A Bitcoin transaction. No internet. At our last BOSS Summit in Dharamshala, a builder broadcast a Bitcoin transaction over mesh radio, with no Wi-Fi and no mobile data, live in the room. That demo sums up what the BOSS Summit is for. We bring India's Bitcoin open-source developers, designers and educators together to work on real problems. There's no stage and no sales pitch. Just builders, code and candid feedback. At Bitshala, a Pathshala for Bitcoin, this is our everyday work. We help developers enter and thrive in Bitcoin FOSS through: → Study cohorts, from Mastering Bitcoin to Protocol Development → Clubs for Bitcoin Core PR reviews, Optech, Kernel and reading → A paid fellowship for developers, designers and educators → Bitspace, our hackerspace in Bengaluru → Our incubator, hackathons like BOSS Battle, and the BOSS Summit The next BOSS Summit is in Jaipur. It's invite-only, but we've opened 10 Session Passes for students and developers who want to be in the room. Session Pass, Oct 27–29: • All sessions, workshops and demos • Lunch included • Stay and Bitmela pass not included If you're building on Bitcoin, Lightning, Nostr or eCash, or you want to start a career in open-source Bitcoin development, this is a good place to begin. Get your pass here: luma.com/bitshalaboss Know a student or developer who should be there? Tag them below 👇

Bitshala BOSS Summit 2026 | Jaipur | 26 Oct - 31 Oct · Luma

Bitshala BOSS (Bitcoin Open-Source Software) Summit 2026 | Jaipur Join us for 6 days of fun, work, collaboration, and deep learning at the frontier...

🟠 CHANDIGARH MEETUP | 17 OCTOBER Want to become a Bitcoin open-source developer & go deeper into the software that runs Bitcoin? Bitcoin Wallets: Keys, Transactions & the Mempool 📅 17 October 🕐 12 – 2 PM Understand what happens under the hood, from keys and transaction construction to signatures and the mempool. 🎟️ Register now: https://luma.com/92dic2g8✨ Chandigarh, come learn, build and contribute to Bitcoin. 🟠

What if your Bitcoin wallet didn’t need an app, or even a smartphone? During BOSS Battle 2026, our hackathon for Bitcoin builders, Anipy built DialSats: a Bitcoin wallet you can call. It works from any phone that can make calls and send SMS. Here’s the flow in the demo: → Text “Hi” to the DialSats number → DialSats calls you back → A voice guides you through setup on your keypad → Your Lightning address arrives by SMS According to the builder, it also lets you send and receive, take in dollars, and buy bitcoin with INR peer-to-peer. Why this matters: billions of people still rely on basic phones, patchy data, or no data plan at all. Projects like this ask a simple question: how do we make Bitcoin usable for them, using the tools they already have?

Today’s Bitshala Club: Is your phone ever truly offline? Bitcoin Hardware & Sovereignty Club | Today · 8 PM IST | 2:30 PM UTC With host @EmbeddedSDE, we’ll explore: 🔹OS hardening: Why privacy toggles are not enough 🔹Private replacements: LibreWolf, Signal, Organic Maps and more 🔹Privacy tools: Self-hosted passwords, E2EE notes, private cloud 🔹Financial privacy: Sparrow Wallet + your own node + Tor 📍 8 PM. Only on Discord:

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Discord - Group Chat That’s All Fun & Games

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LIVE NOW: Learning Bitcoin from the Command Line (LBTCL) Cohort - Season 5 for orientation session ✅ Ideal for anyone with basic Bitcoin knowledge and comfort with the command line. 📌 Apply here:

Bitshala

Bitshala App

Structured, cohort-based Bitcoin education. Browse the programs, week-by-week curriculum and cohort outcomes.

📖 Reading material:

Bitshala

Bitshala App

Structured, cohort-based Bitcoin education. Browse the programs, week-by-week curriculum and cohort outcomes.

Want to move beyond theory and work directly with Bitcoin Core? Learning Bitcoin from the Command Line (LBTCL) Cohort - Season 5 starts today. 🟠 LBTCL is a hands‑on, immersive cohort designed for developers and serious Bitcoin learners who want real‑world experience using the Bitcoin CLI. 🔹 Weekly live sessions 🔹 Guided self‑study 🔹 Node management & scripting 🔹 Certificate + proof of work 🔹 Strong builder community 🔹 Potential fellowship opportunities ✅ Ideal for anyone with basic Bitcoin knowledge and comfort with the command line. 📌 Apply here:

Bitshala

Bitshala App

Structured, cohort-based Bitcoin education. Browse the programs, week-by-week curriculum and cohort outcomes.

📖 Reading material:

Bitshala

Bitshala App

Structured, cohort-based Bitcoin education. Browse the programs, week-by-week curriculum and cohort outcomes.

After applying you will receive a mail on your registered email id. Click on "Join Discord Server" to access LBTCL cohort channels and begin your journey

How do you recover a Bitcoin wallet without exposing its keys? Latest in Bitcoin Tech | TODAY · 8 PM IST We deep dive into: • Multisig backups Why recovery is harder than signing. • BIP-138 Encrypted backups for wallet descriptors and metadata, without exposing private keys. 8 PM IST only on Discord:

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Check out the Bitshala community on Discord - hang out with 3290 other members and enjoy free voice and text chat.

⚡ Mastering Lightning Network | Season 5 Want to go beyond on-chain Bitcoin and learn to build on Lightning? Join an 8-week, hands-on cohort covering LN engineering, node operations, channels, routing, security and real-world use cases. Starts 18 Nov 2026 | Wednesdays, 8 PM IST 🎟️ Apply: https://app.bitshala.org✨ Who’s it for? Developers, designers, builders & curious Bitcoiners Prerequisites: Intermediate Bitcoin knowledge You’ll explore • LN engineering & node operations • Channels, routing, liquidity & security • Real-world Lightning use cases • Self-study + weekly live sessions • Group discussions & live Q&A Based on: Mastering the Lightning Network, LND Builder’s Guide & Chaincode resources Reading material:

Bitshala

Bitshala App

Structured, cohort-based Bitcoin education. Browse the programs, week-by-week curriculum and cohort outcomes.

New Bitcoin Talks episode with @Basanta Goswami just dropped. How do we build truly private, self-custodial software for a Bitcoin-native future? In this episode of Bitshala Talks, we sit down with open-source developer Basanta to discover the technical reality of building freedom tech. Key takeaways from the conversation: • Reproducible Builds: Why verifying software binaries from source code is critical for wallet security. • Bull Bitcoin: The philosophy behind self-custodial exchanges & mobile wallet architecture at @BULL BITCOIN • Privacy-First Education: Bringing non-bitcoiners into freedom tech through community initiatives like Cyber Suraj at Bitspace. • L2 Trade-Offs: Breaking down Lightning, @Liquid Network federations, & Arc for scalable self-custody. • Open-Source Dev: How to contribute meaningfully to Bitcoin repositories. Watch the full interview here 👇

How did banking move from free banking toward centralization, and what did Bretton Woods change? Join Bitshala Reading Club today, 2nd October at 8 PM. We’re in Week 3 of Broken Money by Lyn Alden. Today, we’ll cover Chapters 7–10, exploring: 🔹 The transition from Free Banking to Centralized Banking 🔹 The evolution of the modern banking system 🔹 The Bretton Woods System and its role in shaping global money 📍 8 PM only on Discord:

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✨

How can a single reused random number lead to the total loss of your Bitcoin private key?⚡️ Last week, we explored the Schnorr Proof of Knowledge. Today, we move from theory to practice and see how that interactive protocol becomes a non-interactive digital signature scheme. Join the Cryptographic Foundations of Bitcoin club, every Thursday at 8 PM, with host Kartikeya Sharma. We’ll cover: 🔹 Schnorr Interactive Proof: Proving ownership of a secret without revealing it 🔹 Fiat-Shamir Transform: How hashing removes the need for interaction 🔹 Nonce Reuse Catastrophe: How poor randomness can expose a private key 📍 8 PM only on Discord:

Discord

Join the Bitshala Discord Server!

Check out the Bitshala community on Discord - hang out with 3290 other members and enjoy free voice and text chat.

🚀 Bitcoin Protocol Development (BPD) Cohort | Season 3 Want to go deeper into how Bitcoin works at the protocol level? A 6-week immersive cohort designed to take you into Bitcoin Protocol Development through hands-on learning. Built around Bitcoin Protocol Development by Chaincode Labs, the cohort combines coding challenges with weekly question assignments to help you engage directly with the protocol. 📅 Starts 16 October 2026 🕗 Fridays, 8:00 PM IST | 2:30 PM UTC Apply now: https://app.bitshala.org✨ ⚡Who’s it for? If you’ve already explored Bitcoin’s technicalities and want to level up, this cohort is for you. 🎓 Earn a Proof‑of‑Work certificate on completion ✅ Potential fellowship opportunities at Bitshala 📌 Apply here:

Bitshala

Bitshala App

Structured, cohort-based Bitcoin education. Browse the programs, week-by-week curriculum and cohort outcomes.

📖 Reading material:

Bitshala

Bitshala App

Structured, cohort-based Bitcoin education. Browse the programs, week-by-week curriculum and cohort outcomes.

After applying, check your email to join the Discord and get started.