Blockstream

Bitcoin is built to last. Keeping it secure is long-term work.

We're excited to share our work this week at Lugano Plan B:

on lessons from the cypherpunk movement, Jonas Nick on post-quantum signatures, and self-custody workshops with our engineers.

The descriptor file is what stops most people from trying multisig.

It lists every signer's public key and the wallet's rules. Lose it and two of three recovery phrases won't let you spend. Jade stores it on device, making more advanced self-custody easier and safer.

https://youtube.com/shorts/PKCM_USH7qo

2FA emails for multisig accounts now arrive from

Blockstream [email protected]

They used to show as GreenAddress. Same address, new sender name. If a code doesn't arrive, check your spam folder.

You can also set up more than one 2FA method: SMS, email or an authenticator app.

With a second method ready, you're always able to authorize transactions and move your funds.

An update from the Liquid Federation on the next stage of the

's recovery.

Multisig is back in the Blockstream app. Create a 2-of-2 2FA Protected or 2-of-3 Bitcoin account today, the same multisig protection we pioneered in 2019. Full breakdown:

https://blog.blockstream.com/multisig-is-back-in-the-blockstream-app/

Core Lightning 26.06.8 is out, and every node runner should upgrade.

This release fixes vulnerabilities responsibly reported over recent weeks. There is no embargo period: the release and fixes are available right now.

A number of tests are being held back temporarily to make the underlying issues harder to reverse-engineer while node runners have time to upgrade.

Please upgrade as soon as possible.

https://github.com/ElementsProject/lightning/releases/tag/v26.06.8

We have published the technical security assessment of the September 6

incident, which details the root cause and mechanics of the exploit, an incident timeline, and the engineering and security changes being implemented in response.

https://blog.blockstream.com/liquid-network-security-incident-assessment/

Run Jade fully air-gapped on your phone. Unlock, receive, and send all pass through QR codes between Jade and the Blockstream app.

Every address and transaction gets verified on screen before you use it.

https://youtube.com/shorts/R5bX31gsihI?feature=share

blockstream.info has been rebuilt, for Bitcoin and

Watch the next block fill. Read real analysis on any transaction. Check Liquid's backing yourself, in one dashboard.

Everything new:

https://blog.blockstream.com/blockstream-explorer-rebuilt/

2% allocation. If Bitcoin doesn't perform, the portfolio recovers. If it continues toward $200T, the effect is outsized.

on why pension funds don't need to form an opinion on how far Bitcoin goes, just stay the course and don't rebalance.

https://youtube.com/shorts/FQgbfKSAxnE?feature=share

Core Lightning 26.06.7 is out, and every node runner should upgrade.

It fixes issues reported over the past three weeks, during a sharp rise in AI-generated reports across open source Bitcoin. No vulnerability is known to be actively exploited. Binaries are out now. Source follows in 14 days.

https://blog.blockstream.com/core-lightning-26-06-7/

Finding the right post-quantum signature for SHRINCS meant testing 25,935 parameter sets.

Blockstream Research built an open-source explorer where wallet developers, protocol researchers, and anyone else set the weights that match their case.

Full post: https://blog.blockstream.com/searching-for-shrincs-parameters/

On 15 August 1971 the dollar left gold, and a savings account stopped holding its value.

walks through what changed that night and why it still matters.

Bitcoin in self-custody with Blockstream Jade is money nobody can dilute or freeze.

Full episode:

Core Lightning has been triaging a high volume of AI-generated CVE reports over recent weeks. Several are real, and a coordinated fix is underway.

What to do now: do not shut your node down. Restart it with --offline.

That flag stops peer connections, so no payments route in, out or through your node. It keeps running, which means it keeps watching the chain and can still act if a counterparty force-closes a channel. A node that is powered off cannot do that, and that is why switching off is the worse option.

On

or

this is a startup setting for Core Lightning, not a toggle in the dashboard.

What happens next: signed binaries will be published. Verify the signatures before you install, then bring your node back online. Source and reproducible builds follow afterwards so anyone can audit what changed.

https://github.com/ElementsProject/lightning

If you run Core Lightning: when the release is published: upgrade with signed binaries, or start your node with --offline.

Details stay under embargo for two weeks. Previous releases, including 26.04, are unsupported.

Full details when the embargo lifts. The 26.09 release is still planned for late September.

You can build a Bitcoin wallet with nothing but a coin and a word list. Jade does the one step you cannot do by hand.

Flip a coin 121 times, find the words offline, and pick your final word from the options Jade calculates. Here is what rolling your own entropy actually looks like.

https://youtube.com/shorts/6P0waV3IP5M?feature=share

Every method written up, coins, dice, poker cards, even tarot, with the binary word tables you need to do it offline.

help.blockstream.com/generate-recovery-phrase-offline

Jade air-gapped QR support is new in the Blockstream desktop app.

Run Jade Plus fully air-gapped and the device never touches your computer. PIN unlock, wallet import, address checks and signing all happen over QR codes, read by the camera on the device.

https://youtube.com/shorts/qsvqLNFjC1k?feature=share

Jade firmware 1.0.41 is out. It contains security updates and every user should upgrade as soon as they safely can.

Jade is not affected by the Coldcard random number vulnerability. The reasoning, and everything we changed, is in the post.

https://blog.blockstream.com/reflections-on-the-coldcard-fallout/

You can now pick up a Jade at a UPS Access Point in the US and Canada instead of having it shipped to your house.

At checkout, choose pickup and select a nearby UPS Store, CVS, or similar.

https://store.blockstream.com/

The official Core Lightning app from Blockstream is a dashboard you host yourself, connected straight to your own node.

Its Volume Chart maps routing traffic inbound to outbound, channel by channel, so you can see which channels earn their capital and which sit idle.

Run a node, route payments, watch it work. One-click on

or

or run it from source: https://github.com/ElementsProject/cln-application

Your Jade never has to touch the computer.

QR Connect and air-gapped signing land in the desktop app, so Blockstream Jade pairs, unlocks and signs entirely over QR codes.

Lightning arrives too, in Beta. Switch it on in settings, no second app to run.

https://blog.blockstream.com/blockstream-app-desktop-3-5-0/

Sync an entire Bitcoin wallet in seconds.

QuickSync is a new open-source wallet scanning protocol by Blockstream that turns hundreds of address lookups into one descriptor request, dramatically cutting sync time when using the Blockstream Explorer API.

Get an API key today: https://dashboard.blockstream.info

"If you can't outperform Bitcoin with a strategy, maybe you should just buy Bitcoin."

Over six-year rolling periods for the last 15 years, Bitcoin has been the outlier asset class.

on why Bitcoin is the hurdle rate for long-term value preservation.

https://youtube.com/shorts/4DQPf01qAzg?feature=share

The hurdle rate is set. Build your allocation in self-custody.

blockstream.com/app

Blockstream Research put post-quantum signatures on Jade Plus and three other wallets. All four signed.

H/t Oleksandr Kurbatov and Dmytrii Kurbatov for leading the work. Reviewed by Jonas Nick.

Also reviewed by Mike Kudinov, Viktor Mashtaliar and Yaroslava Chopa.

Thanks also to Trezor, Ledger and

, who helped the team get this running on their hardware.

https://blog.blockstream.com/hardware-wallets-post-quantum-signatures/

A popular concern says post-quantum signatures cannot run on the hardware wallets people already own.

Blockstream Research implemented hash-based schemes on four popular devices. All four signed. SLH-DSA, the NIST standard, in about two minutes at worst.

https://blog.blockstream.com/hardware-wallets-post-quantum-signatures/

Owning your money outright is a financial edge that's hard to take away.

lays it out in Exit Manual Episode #45, and the Blockstream app makes it real.

Blockstream Jade can hold a duress PIN, a second PIN separate from your real one. Enter it under pressure and Jade erases the wallet, so what's handed over is an empty device.

There is no undo. Back up your recovery phrase first, and choose carefully when to use it.

https://youtube.com/shorts/m4JnjMQO78A

How to enable a duress PIN on Jade:

https://help.blockstream.com/blockstream-jade/add-more-security-functionality/enable-a-duress-pin

Like many open source Bitcoin projects, Core Lightning has received a number of AI-generated CVE reports from multiple sources over the past 10 days. Our small team, together with several invaluable open source contributors, has been working intensively to validate and triage these reports and develop fixes where needed.

We’re now working through a broader remediation strategy. The first step is a point release containing many of these fixes, and we will strongly recommend upgrading. We’re aiming to have an initial version of the point release available within the next few days.

Jade doesn’t use a physical secure element.

We just published a full post on how the Virtual Secure Element works:

https://blog.blockstream.com/jade-virtual-secure-element/

Your recovery phrase sits encrypted on the device. Unlocking it needs the PIN you type on Jade and a key share from a blind oracle. Neither is enough by itself.

The oracle never sees the real PIN or any wallet data. It only gets a scrambled version that includes a secret unique to that particular Jade.

Three wrong PINs and both sides wipe. Device and oracle. After that the encrypted data is permanently unusable without the recovery phrase.

A locked Jade holds nothing an attacker can use alone.

Everything is open source, firmware, hardware, and the oracle. You can run the oracle yourself, or skip it completely and use SeedQR or type the recovery phrase.

The official Core Lightning app from Blockstream is a dashboard you host yourself, connected straight to your own node.

Account Events tracks every sat across every channel, day by day, so you can see exactly where your liquidity has been.

Self hosted, and it talks to your node over an encrypted Commando connection with rune permissions you control. One-click on

or

, or run it from source:

https://github.com/ElementsProject/cln-application

Using LLMs to find bugs is well trodden. Using them to help prove a cryptographic library correct is not.

Proof of concept from Jonas Nick, Director of Blockstream Research, with remix7531.

https://delvingbitcoin.org/t/libshrincs-a-c-implementation-with-a-machine-checked-security-proof/2795

New research from Kyrylo Riabov and Artem Chystiakov.

This Blockstream paper explores enforcing asset rules onchain with a Simplicity covenant on the

. Ordinary transfers need no issuer signature, and the holder keeps their own keys.

https://github.com/Arvolear/research-papers/blob/master/simplicity/DAMP.pdf

A passphrase adds an advanced layer of protection to the Bitcoin self-custody setup you already have, with nothing to buy.

Your existing funds don't move on their own. Back up the passphrase as carefully as your recovery phrase, then send them across.

https://youtube.com/shorts/XdhNn5cIEd8

Lose the passphrase and the funds are gone, even if you still hold your recovery phrase. It isn't a password you can reset, it's part of the key.

Jade shows an 8 character fingerprint each session. If it doesn't match, you've typo'd.

Passphrases are the BIP-39 standard, not a Jade feature, so the same one works on any wallet that supports it. Case and spaces count.

Step by step setup on Jade:

https://help.blockstream.com/blockstream-jade/add-more-security-functionality/add-a-bip39-passphrase-for-jade

Announcing Blockstream Swaps.

Trustless atomic swaps for Bitcoin, Liquid, and Lightning. Hold BTC or LBTC and pay Lightning invoices without managing channels or inbound liquidity. Reach Lightning from cold storage while keeping full control of your funds.

Built as a complementary service to strengthen ecosystem resilience and redundancy. Currently in beta.

Full announcement: https://blog.blockstream.com/announcing-blockstream-swaps/

Beta access: https://blockstream.typeform.com/to/y1L5wyZT

Gen Z is investing earlier than any generation, often into assets they never actually control.

breaks down the trend and the way forward: bitcoin in self-custody with Blockstream Jade, a fully open source Bitcoin hardware wallet.

Your bitcoin should answer to you alone.

Jade builds your recovery phrase from 9 independent sources of randomness, blended so nobody on earth can reproduce it. Watch the full setup: create your wallet, confirm it's genuine, and receive with confidence.

https://youtube.com/shorts/WqQ5nfKlnRI

How Jade generates your recovery phrase:

https://help.blockstream.com/blockstream-jade/faqs/how-does-jade-generate-my-recovery-phrase

Post-quantum signatures aren't one-size-fits-all, and now developers can find the SHRINCS setup that fits theirs.

Blockstream Research's explorer lets you tune signature size, signing cost, and verification cost to match your wallet, node, or miner.

Their sweep of 25,935 candidates found a fallback signature about 2 KB smaller than NIST's SLH-DSA, and 28% cheaper to verify.

https://blog.blockstream.com/searching-for-shrincs-parameters/

Most people carefully back up their multisig seeds… and forget the part that actually lets them reconstruct the wallet.

Without the configuration (descriptor), those seeds are incomplete. Jade can register and store your multisig configs on-device (up to 8) and export them later via QR if you ever need to rebuild the wallet.

Guide: https://help.blockstream.com/blockstream-jade/add-more-security-functionality/back-up-a-multisig-configuration-on-jade

Jade has had Anti-Exfil since the beginning.

A compromised hardware wallet can slowly leak your private keys through the nonces in its signatures, even if the keys themselves were generated securely.

Anti-Exfil stops this by using sign-to-contract: Jade cryptographically commits its nonce to random data from your host computer, fully re-randomizing it so no key material can be smuggled out.

Blog written by Andrew Poelstra: https://blog.blockstream.com/anti-exfil-stopping-key-exfiltration/

More details: https://help.blockstream.com/hc/en-us/articles/9641573399961-What-is-Anti-Exfil-and-how-does-it-work

More from Excellion aka

:

Physical secure elements are closed-source under NDA. Once reverse-engineered offline, every unit is compromised.

Jade's virtual SE (Blind Oracle) encrypts your seed so the locked device holds only ciphertext. The AES-256 key is co-created with a truly blind, rate-limited oracle that wipes after 3 wrong PINs. The attack becomes interactive and remote.

Fully open-source. No proprietary silicon. No NDAs. Anyone can audit the code or run their own oracle.

We don't FUD secure elements, we simply explain why we chose the Blind Oracle path for greater transparency and verifiability.

Video with full details:

Help Center: https://help.blockstream.com/blockstream-jade/faqs/how-does-jade-protect-my-recovery-phrase-with-a-blind-oracle

Set up your own Blind Oracle: https://help.blockstream.com/blockstream-jade/add-more-security-functionality/set-up-a-personal-blind-oracle

Github: https://github.com/Blockstream/blind_pin_server

More from

:

Your bitcoin is only as safe as the randomness your keys are made from.

Jade blends 9 independent sources of randomness, from a dedicated hardware chip to camera noise, into a result that exists only once.

Our code is open-source, so anyone can verify it.

How Jade generates your recovery phrase:

https://help.blockstream.com/blockstream-jade/faqs/how-does-jade-generate-my-recovery-phrase

First and foremost, we wish the

team the very best as they work through this situation.

They are excellent partners to Blockstream and the Bitcoin ecosystem, particularly at the intersection of layer-2 networks like Lightning and Liquid.

To strengthen ecosystem resilience and redundancy, Blockstream is launching a new swaps feature. This initiative was already in development as part of our broader effort to build a more resilient suite of tools for the Lightning and Liquid networks. This system is currently in beta testing with select participants.

This was not an effort to replace any one provider. We see Blockstream Swaps as a complementary implementation that adds much-needed redundancy and diversity to the ecosystem. These recent events have only reinforced that need, and we are accelerating efforts to bring Blockstream Swaps to market.

We welcome conversations with wallets, apps and other potential integration partners.

In-app swaps in the Blockstream app are temporarily unavailable due to a service interruption with our swap partner

.

Only the swaps are affected.

is unaffected, and your funds remain fully secure under your control. Send, receive, and all other core features continue to work normally.

We’ll share updates as soon as swaps are restored.

To Bitcoin community leaders worldwide:

Please message your Telegram, Signal, Discord, Nostr groups: anyone who created a recovery phrase on a Coldcard should migrate: fresh seed, generated on a new device.

If your community needs hardware wallets, get in touch. We're expediting onboarding and shipments for local communities:

https://help.blockstream.com/local#register-your-bitcoin-meetup

Use code JADEPLUSEXPRESS for free expedited shipping.

We’re upgrading as many orders as possible to try and help.

https://store.blockstream.com/products/jade-plus

If you need to move funds fast, do NOT wait for shipping.

Create a software wallet in the Blockstream app and move the funds there. This is temporary while you wait for your hardware wallet from any vendor.

This thread covers creating a software wallet, backing up the recovery phrase, and receiving funds.

Stay calm, but move diligently.

Official guides linked in every post.

Download the Blockstream app

https://blockstream.com/app

Create a new software wallet in the Blockstream app

1. Open the app
2. Select Setup Mobile Wallet (or the desktop equivalent)
3. Secure it with biometrics or set a PIN
4. The app generates your keys. Tap Continue
5. Your wallet is ready

Keys live only on this device until you backup the recovery phrase.

https://help.blockstream.com/blockstream-app/set-up-transact-recover-your-wallet/set-up-a-new-wallet

Backup your recovery phrase

1. In the app go to Security
2. Tap Backup Now
3. Write down the 12 or 24 words offline, carefully, in order
4. Complete the verification check in the app
5. Store the backup securely offline. Never a photo or digital file

https://help.blockstream.com/blockstream-app/set-up-transact-recover-your-wallet/back-up-wallet

Receive bitcoin in the Blockstream app

1. Open your wallet and tap Transact → Receive
2. Share the address or QR code with the sender
3. Wait for the transaction to confirm. Your balance updates on the home screen

https://help.blockstream.com/blockstream-app/set-up-transact-recover-your-wallet/receive-bitcoin

Entire Jade lineup is safe.

Read how Jade generates entropy and recovery phrases:

https://help.blockstream.com/blockstream-jade/faqs/how-does-jade-generate-my-recovery-phrase

Your recovery phrase backs up your bitcoin, so keep it offline. Don't photograph it, don't type it into any website, and don't drop it into your notes app. Put it on paper, or better still, steel.

https://youtube.com/shorts/QxVjXbjWO6g?feature=share

Jade is unaffected by the recently disclosed RNG vulnerability affecting other hardware wallets.

Every BlockstreamJade recovery phrase comes from multiple independent entropy sources.

On an affected device? Here's how to migrate calmly, step by step:

https://blog.blockstream.com/jade-unaffected-coldcard-vulnerability/

The Blockstream Jade lineup (Jade Classic, Jade Core, and Jade Plus) is unaffected by the recently reported RNG issue with another company.

We are preparing a blog post outlining best practices for anyone moving bitcoin to a new wallet, including how to generate fresh keys, verify addresses, conduct a test transaction and securely retire an old recovery phrase.

Frontier LLMs are uncovering previously overlooked vulnerabilities, and Blockstream is using the same tools to strengthen the QA reviews of our product suite.

But AI is not a substitute for open source: transparent hardware and firmware enable independent scrutiny, faster disclosure and quicker fixes. This is why Blockstream Jade continues to champion both open source software and hardware.

Simplicity has been live on

mainnet for nearly a year. Now the full developer toolchain is here.

Build high-assurance Bitcoin contracts in a zero-friction environment with autocomplete, instant testing, post-quantum signatures, and a finalized lending template.

Here's what builders can ship today and what's coming next.

https://blog.blockstream.com/building-on-simplicity-what-ships-today-what-is-coming-next/

Your node's finances, in one place. CLN's Bookkeeper shows invoices received, payments sent, routing revenue, and sats flowing in and out.

Run your own node and watch the books update live. One-click on

or

or run it from source:

https://github.com/ElementsProject/cln-application

The curve behind every Bitcoin signature has a weakness to quantum computers, understood since the 1990s. The only thing missing is the machine.

Quantum is the Bitcoin Security Consortium's first focus, and Jonas Nick explains why we build for that adversary now instead of betting it never arrives.

https://youtube.com/shorts/tPA_e3j2Ugc?si=5Fji3bBFqO2f64gH

Send Bitcoin faster, keep your amounts private, and hold stablecoins and other assets, all on Bitcoin-based rails. That's Liquid, a Bitcoin layer-2. At

Toronto, Pablo Greco explains how it works.

Watch:

Buy bitcoin on an exchange and it sits as a balance on their books. Until you withdraw, it is not bitcoin you hold. In the Blockstream app, every purchase lands in a wallet you control, in self-custody from the first second.

https://youtube.com/shorts/u-op-eChjDE?feature=share

Hold your own bitcoin from the first second. Download the Blockstream app:

https://blockstream.com/app/

Make your Bitcoin ready to spend anywhere it's accepted with the Blockstream App.

Swap into Liquid for fast, Confidential Transactions that can pay any Lightning invoice. When you're ready to go back to mainchain, swap back to Bitcoin.

Lose your phone, keep your 2FA.

Jade Plus now backs up your two-factor accounts. Scan your Google Authenticator export straight to Jade, then generate your codes on a PIN-protected device you control.

https://store.blockstream.com/products/jade-plus

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

on why OP_CHECKSHRINCS proposed by Blockstream Research 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.

https://youtube.com/shorts/_oGgAEfwo-E?feature=share

Core Lightning 26.06 ships with bwatch: a new event-driven, in-memory block-watching plugin.

Your node registers its watches and catches up to the chain near-instantly. Faster startups, lighter footprint, crash-resistant, and built to scale. ⚡

https://blog.blockstream.com/core-lightning-26-06-quantum-resistant-lightning-channel/

Quantum is the Bitcoin Security Consortium's first focus, and Blockstream Research 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. 🧵

OP_CHECKSHRINCS is a proposed opcode for verifying SHRINCS, a hash-based post-quantum signature scheme.

At 7x smaller than the NIST standard, it's small enough to actually work on Bitcoin.

https://blog.blockstream.com/op_checkshrincs-a-hash-based-signature-opcode-for-post-quantum-bitcoin/

Hash-based signatures are the near-term answer. Lattices are a strong potential long-term play: eventually ~50% smaller signatures and faster verification, and unlike hash-based they preserve multisig, threshold, and HD wallets. Here's how they work:

https://blog.blockstream.com/schnorr-but-with-vectors-lattice-based-signatures-explained/

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. Blockstream Research ran the first post-quantum tx on the

in March 2026.

https://blog.blockstream.com/quantum-computing-and-bitcoin-eli5/

None of it works without solid cryptography.

Blockstream Research 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://blog.blockstream.com/blockstream-research-brings-libsecp256k1-zkp-back-up-to-speed/

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.

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

Blockstream Research hired Mikhail Kudinov, 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.

https://youtube.com/shorts/SfiP1Aw7NvM?feature=share

How we are making Bitcoin post-quantum secure:

https://blog.blockstream.com/op_checkshrincs-a-hash-based-signature-opcode-for-post-quantum-bitcoin/

New 0-conf infrastructure for Liquid and other Blockstream Elements - 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://blog.blockstream.com/0-conf-for-elements-and-liquid-a-technical-explainer/

Managing a Lightning node used to mean living in the command line.

The Core Lightning app puts your channels, fees, and peer control in one screen. Your node, your rules.

Core Lightning runs at home in one click on

or

. Run the app from source:

https://github.com/ElementsProject/cln-application

Everyone you've orange-pilled is still leaving their coins on an exchange.

The best way to teach self-custody is to hand someone the keys. Jade Core makes it a five-minute conversation, not a lecture.

Bring someone in this week.

https://store.blockstream.com/products/blockstream-jade-core

Hashcash, invented by

, is cited in the Bitcoin whitepaper.

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

https://youtube.com/shorts/52_LhzOOIIQ?feature=share

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

https://blockstream.com/app/

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.

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

https://blog.blockstream.com/op_checkshrincs-a-hash-based-signature-opcode-for-post-quantum-bitcoin/

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.

https://youtube.com/shorts/692r76qO2oo?feature=share

Take back your privacy. Download the Blockstream app:

https://blockstream.com/app/

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.

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://blog.blockstream.com/blockstream-quarterly-update-q2-2026/

"Buy the dip and hodl. Don't get shaken out."

• npub1qg8j6gd…v024kw

https://youtube.com/shorts/-YdknhWVlY0?feature=share

Most people buy bitcoin first and secure it later. With Jade paired to the Blockstream app, every purchase lands straight in offline cold storage, secured by your hardware wallet from the very first transaction.

https://youtube.com/shorts/YsfXy5Fc1kI?feature=share

Self-custody got a reputation for being hard. Jade Core is here to end it.

Serious protection for your bitcoin, with a setup simple enough that "I'll do it later" stops being a reason.

https://store.blockstream.com/products/blockstream-jade-core

An unconfirmed transaction isn't lost, it's waiting its turn in the mempool, and the fee you paid is its place in line. In a hurry? Bump the fee in the Blockstream app to move up the queue.

https://youtube.com/shorts/XJ8N1IdW2cs?feature=share

Spending on the

is going near-instant.

0-conf brings safe-to-act-on transfers, now in public beta with a full release around the corner. And with the issuance cap removed, issuers can mint stablecoins and other Issued Assets at real-world scale.

The full Liquid roadmap is in our Q2 update.

https://blog.blockstream.com/blockstream-quarterly-update-q2-2026/

Today, losing your hardware wallet is fine.

Your recovery phrase gets you back in. In a post-quantum signing setup, the device also holds state: a running count of how many times it has signed. That state matters for security.

SHRINCS is designed so that if the device is lost, the recovery phrase loads into a new one and falls back to a path that needs no state at all.

The fallback needs no state, so a lost device is never a lost wallet. More expensive to spend from, but always accessible. Blockstream Research Director Jonas Nick on building a post-quantum scheme that stays safe even when hardware fails:

https://blog.blockstream.com/op_checkshrincs-a-hash-based-signature-opcode-for-post-quantum-bitcoin/

Bitcoin is leaving exchanges, dominance is climbing, and institutional adoption is focused almost entirely on Bitcoin.

on why Bitcoin is at a good entry point.

https://youtube.com/shorts/4rWyjFv0Bro

Be part of the bitcoin leaving exchanges. Buy and self-custody in the Blockstream app

https://blockstream.com/app

Getting off an exchange shouldn't be hard. Jade Core is the simplest way to hold your own bitcoin, built for anyone taking self-custody for the first time.

on the thinking behind it.

https://youtube.com/shorts/S4bhcmd4-rM?feature=share

Satoshi chose secp256k1 for Bitcoin’s cryptography.

Jonas Nick and Blockstream Research are among the co-maintainers of libsecp256k1, the library every Bitcoin node runs to implement it. Researching what comes next is a natural extension of that work.

https://youtube.com/shorts/tPA_e3j2Ugc?feature=share

Bitcoin transactions could get cheaper by combining signatures across transactions.

DahLIAS is a new signature scheme being worked on by Blockstream Research, a building block for cross-input signature aggregation (CISA).

Watch Tim Ruffing present DahLIAS in full at EUROCRYPT 2026.

Turns out you don't need to wave a device at a webcam, tape over your laptop camera, or set up in a windowless room to take self-custody of your bitcoin.

Jade Core keeps it simple: plug in, back up, transact, done.

https://store.blockstream.com/products/blockstream-jade-core

The Blockstream Explorer API is home to one of the fastest ways to sync a Bitcoin wallet.

With QuickSync, you send one descriptor and get the complete history back in a single response.

Grab an API key and see it for yourself.

🔗 https://dashboard.blockstream.info/

Supply chain attacks are real. Before you use a new Bitcoin hardware wallet, check the tamper-evident seal, then run a genuine check (if it has one).

Jade performs a cryptographic handshake with Blockstream to confirm it's running genuine firmware. Verify first, full send self-custody second.

https://youtube.com/shorts/4IVYZ6D51Jw?feature=share

Q2 was Blockstream moving from research to release.

Blockstream Research took post-quantum Bitcoin from a live deployment on the

to OP_CHECKSHRINCS, a signature opcode the whole network can evaluate.

Blockstream Jade became a three-model lineup, with the new Jade Core turning self-custody into a five-minute move off an exchange.

Liquid published a roadmap that puts 0-conf and a trust-minimized bridge on the calendar.

Core Lightning strengthened node architecture with bwatch, while the Explorer API kept blockchain data fast and dependable at enterprise scale.

Blockstream's Q2 2026 Quarterly Update is live.

https://blog.blockstream.com/blockstream-quarterly-update-q2-2026/

Bitcoin's neutrality is its edge.

on why a decentralized asset with no company in control wins: rivals won't build on each other's chains, but everyone can build on Bitcoin.

https://youtube.com/shorts/RsSJrYvE_H8

Simplicity's site just got a full redesign.

Simplicity lets you prove exactly how a contract behaves before it goes live. No surprise fees, no transactions failing mid-execution. The security guarantees are part of the language, not bolted on after.

Live on the

mainnet, running real financial contracts, and built for the developers and institutions building high-assurance Bitcoin applications.

https://blog.blockstream.com/welcome-to-the-new-simplicity/

Stateful signatures trade systemic risk for localized risk. The failure mode is confined to individual wallets, not the network. Jonas Nick at the Bitcoin Conference 2026 on why that's the better trade-off to explore.

One field. Every Lightning payment destination. The way it should be.

Bitcoin is money. ⚡️

Buy, swap, pay, and secure your bitcoin in one app, with Blockstream Jade for cold storage.

https://blockstream.com/app/

Bitcoin started as a discovery, not an invention.

explains why on Bitcoin Suisse AG, plus the post-quantum migration and how Blockstream Research is preparing Bitcoin for it with OP_CHECKSHRINCS.

From hardware wallets to enterprise custody, Blockstream covers the full Bitcoin stack.

maps it out Paris Blockchain Week.

https://youtube.com/shorts/GXuri1IYTdk

Start with the Blockstream app.

https://blockstream.com/app/

One send flow. Pay every modern Lightning destination.

✅ LNURL

✅ BOLT12 offers

✅ BIP353 human-readable addresses

All settled under the hood with BTC/LBTC swaps, no Lightning channel management.

Live in Blockstream app 3.4.0

https://github.com/Blockstream/green_qt/releases/tag/release_3.4.0

Building an open ecosystem where participants always understand what they're signing. Blockstream Research maps the way forward.

When Alistair Milne placed a bid for 18.7 million bitcoin,

thought: let's out-bid him.

https://youtube.com/shorts/Wj7q_K6jUDg?feature=share

Under 1 million addresses hold a whole bitcoin.

There are about 59 million millionaires. The math does not allow one each.

Every sat counts when there aren't enough whole coins to go around. Buy and self-custody in the Blockstream app

https://blockstream.com/app

Limited seats left for this one.

Build formally verifiable lending contracts on ‪Liquid‬ with Blockstream and two of Switzerland's banking teams, hands on, July 2 in Zürich.

https://lu.ma/h94asyi8

This Blockstream Jade Core walkthrough with nostr:npub1lr2zzf989mvf393y0tv39ara6a4vddkd6y87z784up9vl6ks6j3qtudl6ais the only setup video you need to start your self-custody journey.

Unboxing, genuine check, recovery phrase, first transaction, it's all here 💪

"Do what you love and save in Bitcoin." Joe Nakamoto leads the way.

Order your Jade Core from the Blockstream store and start your self-custody journey. CHEERSJOE

https://store.blockstream.com/products/blockstream-jade-core

Exchange reserves are at their lowest level since 2020.

The migration to self-custody is well underway. Is your platform ready for it?

Start with a Blockstream Explorer API key.

🔗 https://blockstream.info/explorer-api

https://blockstream.info/explorer-api

Bitcoin’s 200-week moving average just hit $62K, making current levels an attractive entry point for capital.

In a recent interview, Blockstream CEO

broke down why the current market dip is a value trade driven by institutional focus, falling exchange supply, and rising Bitcoin dominance.

As tourists rotate into other sectors, smart money is building a lower cost basis.

Watch the full breakdown below.

Major financial institutions are developing training materials, procedures, and processes to make Bitcoin products available to clients.

explains the set up.

https://youtube.com/shorts/AAlrEbhBSas

Institutions are preparing. Be ready before they are.

https://blockstream.com/app/

Your 2FA secrets can now be stored and accessed on Blockstream Jade, a device built for security and backed by years of open-source scrutiny.

Self-custody your bitcoin and secure your logins on the same device with Jade Plus, in the Blockstream store.

https://store.blockstream.com/products/jade-plus