Blockstream

Building the rails for Bitcoin finance. Enterprise, consumer, asset management.

The future of finance runs on ₿.

Support: @BlockstreamHelp

[Blockstream @Blockstream]

Post-quantum research for Bitcoin is well underway @blksresearch. Get the full picture, and what we’ve been up to:

⚛️ https://t.co/l8wxW04qTa

[Liquid Network 🌊 @Liquid_BTC]

See it in action at Simplicity Office Hours, Tuesday July 28, 15:00 UTC:

🔗 https://t.co/BpU8WW61Yx

[Blockstream @Blockstream]

Post-quantum signatures aren't new, they've existed for about 45 years.

@adam3us on why OP_CHECKSHRINCS proposed by @blksresearch is designed as a minimal, provable change to Bitcoin, and why starting the migration now means more real-world data before it's actually needed.

[Blockstream @Blockstream]

None of it works without solid cryptography.

@blksresearch are key contributors and maintainers of libsecp256k1, behind every Bitcoin signature, and libsecp256k1-zkp, powering Confidential Transactions on Liquid.

Let us proceed together apace. Onward.
https://t.co/FC0VS4Bpvo

[Blockstream @Blockstream]

Quantum is the @BTCconsortium's first focus, and @blksresearch has spent the last year working toward a quantum-safe Bitcoin.

Check out the thread below to learn about some of our initiatives, starting with OP_CHECKSHRINCS. 🧵

[Blockstream @Blockstream]

How worried should Bitcoin holders be? Today's best quantum hardware can barely factor 21.

Taproot already has a quantum-safe path built in via its script tree. @blksresearch ran the first post-quantum tx on @Liquid_BTC in March 2026.
https://t.co/EfnwwPycm0

[Liquid Network 🌊 @Liquid_BTC]

New zero-confirmation (0-conf) infra is now available, giving enterprises near-instant, privacy-preserving acceptance flows on Liquid.

It’s part of Liquid’s 2026 roadmap, alongside a quantum-ready testnet and BitVM whitepaper by year-end.

https://t.co/1MRa05mlda

[Blockstream @Blockstream]

How we are making Bitcoin post-quantum secure: https://t.co/VXaptFV383

[Blockstream @Blockstream]

Today, the best quantum hardware can just about factor 21 (3 x 7).

@blksresearch hired @kudinov_mikhail, one of the cryptographers behind NIST's post-quantum signature standard, and we have already proposed OP_CHECKSHRINCS, an optimized hash-based signature opcode for Bitcoin.

[Blockstream @Blockstream]

Proud to be a founding member of the @BTCconsortium.

Bitcoin’s long-term security has always been core to what we do, from open-source research to practical post-quantum work like OP_CHECKSHRINCS.
Supporting the independent developer community that keeps the network resilient is a natural extension of that mission.

[Bitcoin Security Consortium @BTCconsortium]

We're the Bitcoin Security Consortium: leading financial institutions and Bitcoin companies supporting Bitcoin's long-term security.

Members have pledged $15 million to Bitcoin security research and development over the next three years.

[Blockstream @Blockstream]

New 0-conf infrastructure for Liquid and other @BlksElements -based deployments is here.

Swap services, exchanges and other applications that accept Liquid payments now have access to near-instant transfer times.

More in the technical explainer. 👇

https://t.co/AA4zeJ1MtD

[Blockstream @Blockstream]

Own your bitcoin from day one. Download the Blockstream app:

https://t.co/XP92bBspjt

[Blockstream @Blockstream]

Hashcash, invented by @adam3us, is cited in the Bitcoin whitepaper.

Yet in 2013, watching bitcoin pass $100, he thought he had missed the boat.

[Liquid Network 🌊 @Liquid_BTC]

High-assurance Bitcoin contracts are here. Simplicity is a next-generation smart contracting language for Bitcoin, built for verifiable security and financial correctness.

Simplicity Office Hours is your direct line to the @Blockstream team building it. Bring your questions.

Every Tuesday 08:00 PT.

Recent sessions have covered covenants, prediction markets, lending tools, and trustless swaps.

https://t.co/JVuiEudzYZ

[Blockstream @Blockstream]

Take back your privacy. Download the Blockstream app: https://t.co/XP92bBspjt

[Blockstream @Blockstream]

Reusing a bitcoin address links your transactions and weakens your privacy.

The Blockstream app gives you a fresh receive address every time, and your funds stay in self-custody from the moment you buy.

[Core Lightning ⚡️ @Core_LN]

We're excited to see Clams v1 from a team that's been building alongside us for a while, now shipping!

The new interface integrates with Core Lightning, so Lightning node operators get audit-ready, self-hosted books with their data on their own machine.

[Blockstream @Blockstream]

Taking bitcoin off an exchange into hardware-secured self-custody is now easier, faster, and still as secure as ever.

Jade Core walks a first-time owner from exchange balance to their own keys. $99, free worldwide shipping, fully open-source.

More in our Q2 update.

https://t.co/TLuDTrKPuP

[Blockstream @Blockstream]

Read about the OP_CHECKSHRINCS opcode put forward by @blksresearch and what it means for Bitcoin's post-quantum security:

https://t.co/VXaptFV383

[Blockstream @Blockstream]

OP_CHECKSHRINCS uses one public key with two ways to spend.

The first path keeps signatures small by having the device track how many times it has signed.

The second path doesn't track anything and is always available as a safety net. If your device is lost or replaced, you restore with your recovery phrase and fall back to that second path.

It's more expensive to spend from, but you are never locked out. This is how SHRINCS works.