What really happens when you sign a Bitcoin transaction? ⚡️

Join us today, 24th September at 8:00 PM IST | 2:30 PM UTC for The Cryptographic Foundations of Bitcoin club with @sha512rma.

Building on last week’s introduction to Digital Signatures, we’ll unpack the math behind Bitcoin:
• Schnorr Interactive Proof: Prove you own a key without revealing it
• Fiat-Shamir Transform: How hashing turns proofs into signatures
• Nonce Reuse Catastrophe: The one mistake that can leak your private key

📍 8 PM on Discord: https://lnkd.in/dKBd3mGK ✨

TradFi & Bitcoin Club | 8 PM on Discord ⚡

Today, we continue our Early Riders’ Top 50 Bitcoin Companies series.

Join us today, 23rd September at 8:00 PM IST | 2:30 PM UTC as we explore the companies and business models that helped shape Bitcoin’s growth.

We’ll cover:

• Blockstream and the evolution of Bitcoin infrastructure
• How exchanges, custody, mining, and financial services expanded
• The shift from early infrastructure to larger-scale businesses
• How business models evolved as the market matured
• Where companies captured value, and where they struggled
• Why Binance represents an important transition into the next phase of the industry

📍 8 PM on Discord: http://discord.com/invite/STeQFVEWf9✨

🎙️Bitcoin Talks with Balaji Chandra🎙️

siat does it take to go from Bitcoin investor to open-source contributor and hardware builder?

Our latest episode follows Bala’s journey into Bitcoin development, from Bitshala cohorts and transaction introspection to building open-source libraries and hardware at Bitasha India.

We talk about:
- Learning Bitcoin by building and doing, not just studying theory
- UTXO coin selection and open-source Rust libraries
- Transaction introspection, covenants, and scripting limits
- Vaults, timelocks, and better self-custody
- Building miners, SeedSigners and steel seed plates in India
- Fuzz testing and contributing to Bitcoin infrastructure
- Protocol ossification and the future of Bitcoin development

Whether you’re a developer, builder, or simply curious about how Bitcoin gets built, this conversation is worth your time.

🎬 Watch the full episode: https://youtu.be/zywDrwHUToA?si=UBBDCn9rDs5LBmFx

🟠 HYDERABAD Meetup | 26 SEPTEMBER

➡️ Bitcoin Wallets & Self Custody

Your Bitcoin wallet doesn’t hold your bitcoin. It holds the keys that control it.

So what does it actually mean to own your Bitcoin?

- How do wallets work?
- How should you back up your recovery phrase?
- How do you verify transactions without relying on a third party?

Join Bitshala to learn the fundamentals of Bitcoin wallets and self-custody.

📅 Sat, 26th Sep | 5:00 PM – 7:00 PM

🎟️ Register: http://luma.com/wgwgvesb

🟠 BITCOIN HARDWARE & SOVEREIGNTY CLUB | TODAY 8:00 PM

- Are hardware wallets truly secure, or just harder to crack than software?

- What happens when someone attacks the device protecting your Bitcoin?

- And how far can an attacker go with physical access to the hardware?

Today, we’ll explore the security assumptions, attack surfaces, and tradeoffs behind hardware wallets.

We’ll cover:
🔹 Threats: Trezor/Brevo phishing, D’CENT drains, BitBox Lightning, mining updates
🔹 Foundations: Decapping, microprobing, power analysis
🔹 Defenses: Shield meshes, sensor grids, crypto boundaries
🔹 Tradeoffs: Open-source MCUs vs. closed secure silicon

📍 Today at 8:00 PM on Discord Lounge: http://discord.com/invite/STeQFVEWf9✨

Come understand the hardware protecting your sovereignty. 🟠

🟠 CHENNAI | Sat, 26th Sep | 🕐 4:00 PM – 6:00 PM

🟠Understanding Bitcoin Multisig by Building One

What happens when your entire Bitcoin security depends on a single key?

And how exactly can multiple keys work together to secure bitcoin?

Join us for a hands-on workshop exploring how Bitcoin multisig works by building a multisig wallet ourselves.

🎟️ Register now: https://luma.com/bitshala-4v1p

🟠 KOLKATA | Sat, 26th Sep | 🕐 11:30 AM - 1:30 PM

Bitcoin Mining 101: The Thermodynamic Engine of Decentralized Time

How does Bitcoin keep time without a clock?

There is no central server, no trusted coordinator, and no authority deciding which transaction came first.

So how exactly does Bitcoin reach consensus?

Join us for a beginner-friendly workshop exploring how Bitcoin mining turns electricity into consensus.

🎟️ Register now: http://luma.com/bckklxn8✨

Kolkata plebs, come understand the machine that makes Bitcoin tick. ⚡️

Want to move beyond theory and work directly with Bitcoin Core?

Learn Bitcoin from the Command Line (LBTCL) cohort Season 5 is Open for Registration 🟠

📅 Starts 5th October 2026 | 6-Week Cohort

LBTCL is a hands-on, immersive cohort designed for developers and serious Bitcoin learners who want real-world experience using the Bitcoin CLI.

You’ll learn by working directly with Bitcoin Core, exploring how the network works from the command line and building a deeper understanding of Bitcoin’s internals.

🎟️ Registration's open: https://app.bitshala.org✨

🔹 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.

📖 Reading material: https://app.bitshala.org/lbtcl-instructions

Vadodara Meetup #8 | Who creates our money?

Yesterday, we came together in Vadodara to watch Hidden Secrets of Money and discuss the machinery behind modern money, from money creation and debt to inflation and Bitcoin.

A room full of curious minds, honest questions, and good conversations.

Thank you to everyone who showed up. You made it happen.

Until next time, Vadodara. 🟠

What if syncing the Bitcoin blockchain from scratch could be dramatically faster? ⚡️

Join us today, 21st September at 8:00 PM IST | 2:30 PM UTC for Latest in Bitcoin Tech.

Today, we’ll dive into SwiftSync, a proposed method for speeding up Initial Block Download (IBD) using a hints file to reduce the proof data traditionally required during sync.

Bitcoin Optech notes that Utreexo proof data can reach around 1.3 TB, with explicit deletion proofs alone around 200 GB.

📍 8 PM on Discord: http://discord.com/invite/STeQFVEWf9

Come explore the latest ideas pushing Bitcoin infrastructure forward. 🟠

Mastering Bitcoin Cohort, Season 7 Week 1 is Live 🚀🚀

Why money breaks, how monetary systems evolve, and what the future of money could look like.

Join us today, 18th September at 8:00 PM IST | 2:30 PM UTC for the Bitshala Reading Club📚

We’re starting a new book: Broken Money by Lyn Alden.

For our first session, we’ll explore Part I: The Evolution of Money, including:

🔹 The evolution of money
🔹 Commodity Money vs Credit Money
🔹 How different monetary systems emerge and evolve

📍 8 PM on Discord: https://discord.com/invite/STeQFVEWf9✨

Let's read, question & discuss together. 🟠