Most smart contract exploits share a root cause: contracts that can't be formally proven before they execute. Gianmarco Guazzo, PM for Enterprise, is running a 40-minute workshop on what a more rigorous framework looks like for institutional deployment at the ⁨Crypto Valley Conference. Gianmarco focuses on institutional-grade financial products built on Bitcoin rails. This workshop is built for teams that need to move beyond trust assumptions and build with real confidence. May 28, 9:20 CET. Register to attend.

Smart Contracts Without Security Risks · Luma

Workshop Description Smart contracts have unlocked powerful new financial primitives. They have also introduced a class of risk the industry has be...

Your bitcoin lives on hardware. But your 2FA accounts still live only on your phone? Jade Plus can now back up your authenticator accounts too. Keep using your phone authenticator, but now you have a PIN-protected offline copy that doesn't disappear if your phone does.

Bitcoin infrastructure for the next era. @Adam Back on institutional adoption, quantum resistance, and the Blockstream Jade Core hardware wallet with Scott Melker on The Wolf Of All Streets.

"Bitcoin is more a discovery than an invention. People had the rough idea of how a decentralized electronic cash could work. Satoshi figured out the rest.” - Blockstream CEO @Adam Back on Fox Business with Liz Claman

The results are in from the Blockstream Turin Simplicity Hackathon. 20 developers spent a weekend building real smart contracts on Simplicity covenant DEXs, inheritance tools, post-quantum wallets, and more. First place goes to: PQ Liquid Wallet, taking home $3,000 in bitcoin: PQ Liquid Wallet is the first wallet to test Blockstream's research on protecting Bitcoin from future quantum computers. Second and third place each take home a Blockstream Jade for every team member. Full breakdown of all six submissions on the blog.

Blockstream

Simplicity Developers Show Off at the Turin Hackathon

Six teams built real smart contracts on Liquid in one weekend at the Blockstream Turin Hackathon. Here's what they made.

Thanks to Blox Space Turin and Liquid BTC for making it happen.

Blockstream

Simplicity Developers Show Off at the Turin Hackathon

Six teams built real smart contracts on Liquid in one weekend at the Blockstream Turin Hackathon. Here's what they made.

On May 22, 2010, Laszlo Hanyecz bought two pizzas for 10,000 bitcoin. It's the most celebrated transaction in Bitcoin history. To mark Bitcoin Pizza Day, we built a game. Play Pizza Runner and win L-BTC, a Blockstream Jade Plus, or a Blockstream t-shirt. 🔗 pizzaday.blockstream.com Three ways to win: 🎲 Play for random L-BTC, Jade, t-shirt drops during gameplay 📸 Share a screenshot of your score for a chance to win a new Blockstream Jade Plus hardware wallet 🏆 Get on the leaderboard — top 10 players over 7 days split $1,100 in bitcoin You'll need a @Liquid Network bitcoin address to compete for the leaderboard. Download the Blockstream app on iOS or Android to get started.

As presenting partner of the Crypto Valley Conference 2026, we're excited to host the CVC Sunset Boat Cruise on Lake Zug. May 28, 19:00 sharp. Open to all conference attendees with a valid pass. We can't wait to meet you on the water. After a full day of the highest-caliber Bitcoin and institutional finance discussions in Switzerland, the CVC Sunset Boat Cruise is your chance to continue the conversation with the Blockstream team, speakers, and fellow attendees on the waters of Lake Zug. Get your tickets:

Crypto Valley Conference

Crypto Valley Conference | The building block of Swiss Crypto DNA

Join the Crypto Valley Conference in Switzerland — where industry leaders and academia shape the future of blockchain and digital assets.

“There was some point where I was like no no what counts is how many bitcoins you have and I just didn't care about the rest of it at all.“ - Blockstream CEO @Adam Back Start measuring your savings in bitcoin. The Blockstream app makes it easy to stack, secure, and manage your bitcoin in one place. http://blockstream.com/app

Ten years. Every Bitcoin wallet on the market. @Julian Figueroa finally found one worth recommending to everyone. https://store.blockstream.com/products/jade-plus

Jade Plus: air-gapped QR signing, camera, SD card. Built for bitcoiners who verify everything. Jade Core: USB-C + Bluetooth, color display, 5-minute setup. Built for the person who hasn't started yet. Same firmware. Same Blind Oracle security. Same open-source codebase. Two devices. One architecture. Every level of self-custody covered. Full story →

Blockstream

Introducing Jade Core: Your First Step to Bitcoin Self-Custody

We’re thrilled to announce the newest member of the Blockstream hardware wallet family: Jade Core. Jade Core is the easiest way for anyone to ta...

Optimized stateful hash-based signatures can offer better trade-offs than the standard schemes available today. SHRINCS is live on the @Liquid Network in production today via Simplicity. Jonas Nick at OPNEXT on why this may allow Bitcoin to operate in a post-quantum world without betting on specific future software. Full technical writeup:

Blockstream

OP_CHECKSHRINCS: A Hash-Based Signature Opcode for Post-Quantum Bitcoin

OP_CHECKSHRINCS is a proposed Bitcoin opcode for post-quantum signatures whose security rests on SHA-256, the hash function Bitcoin already uses.

There is no concrete post-quantum signature scheme for Bitcoin today. But over the last year Blockstream Research has been working on exactly this. Director Jonas Nick lays out the proposal: OP_CHECKSHRINCS, a hash-based signature opcode for post-quantum Bitcoin. SHRINCS reaches up to 3 TPS on the compact path. 580-byte signatures from a dedicated signing device. A stateless fallback always available. Already demonstrated on the @Liquid Network . The C++ implementation, Simplicity verifier, and draft spec are all on GitHub.

Blockstream

OP_CHECKSHRINCS: A Hash-Based Signature Opcode for Post-Quantum Bitcoin

OP_CHECKSHRINCS is a proposed Bitcoin opcode for post-quantum signatures whose security rests on SHA-256, the hash function Bitcoin already uses.

The next bull run isn't waiting for you to get your self-custody sorted. In the latest Exit Manual, @Julian Figueroa brings a message from the future explaining where we are in the cycle and why you'll need a Jade in your hands.

Blockstream is in Miami for day 1 of Consensus 2026. @Adam Back and Phil Barkett, Blockstream's VP of Enterprise Products, joined Casey Craig to talk Bitcoin infrastructure.

Running Simplicity. Andrew Poelstra, Simplicity Lead at Blockstream Research, Scott Millar, CEO of Side Swap, and @ODELL on trustless on-chain prediction markets at the @Bitcoin Magazine Conference 2026.

Day 3 at the @Bitcoin Magazine Conference. @Adam Back at the Blockstream booth 2:15–3:15 PM. Come meet him and see the new Jade Core in person.

Day 2 at Bitcoin Conference 2026. ✅ @Adam Back with media ✅ Blockstream Jade Core announced ✅ @niftynei() 🇺🇸💸🧡 on Bitcoin education ✅ Andrew Poelstra on Simplicity-powered prediction markets on the @Liquid Network ✅ Bitcoin art bought with the Blockstream app 🟠

Blockstream is at the Bitcoin Conference 2026. Find us at booth 1538. @Adam Back onsite today, Liquid bitcoin promotion live, and Jade has something for Bitcoin self-custody you'll want to see.

Simplicity is powering non-custodial, Bitcoin-native prediction markets on the @Liquid Network . Find out how with Blockstream Research Simplicity Lead Andrew Poelstra and Scott Millar, CEO of SideSwap, the team behind [Swaption.io](http://swaption.io/), moderated by @ODELL. Open Source Stage, The Bitcoin Conference. http://swaption.io/),

Long-time Core Lightning contributor, creator of the Bookkeeper plugin, and the mind behind Liquidity Ads on the Lightning Network, Lisa Neigut (@niftynei() 🇺🇸💸🧡) is at the Bitcoin Conference next week. Founder of @btcplusplus and Base58 School Nifty is one of the most impactful builders in open source Bitcoin. ⚡ Tuesday April 28, Lisa Neigut joins the Bitcoin Conference Genesis Stage for Interactive Strategies to Improve as a Bitcoin Educator alongside Arsh Molu of Human Rights Foundation, Satsie from Bitcoin Dev Project, and John Dennehy of My First Bitcoin. 11:50AM PDT. Wednesday she's back twice. Keynoting the Bitcoin Conference Open Source Stage on the Bitcoin Developer Ecosystem at 11:00AM PDT, then moderating Hands-on Bitcoin Transactions on the HRF Freedom Go Up Stage at 12:30PM PDT.