It’s never been easier to start exploring multisig. Watch Drew set up a decaying multisig wallet with Liana wallet and back up the descriptor on a Jade hardware wallet.

🚨 Black Friday Alert! 🚨 Starting Nov 29 at 12:00 EST, be online for our biggest sale of the year! Buy two Jades and get the second one for 50% off. Plus, enjoy free shipping across North America and Europe. 🌎🌍 https://store.blockstream.com/

Congratulations to our very own Tim Ruffing and Jonas Nick, along with Yannick Seurin from Ledger, Chelsea Komlo, and Ian Goldberg. They have received the 2024 Bitcoin Research Prize for their work on MuSig2 and FROST!

At Blockstream, we are first and foremost a Bitcoin development company, and are always thinking of ways to improve Bitcoin's security. Recently, our applied research division became the first to formally verify the safegcd algorithm, which is used in libsecp256k1, thereby strengthening the security and reliability of Bitcoin and Liquid, and obtaining the highest possible software correctness guarantees. Read the details in our latest in Bitcoin Magazine:

Bitcoin Magazine

Safegcd’s Implementation Formally Verified

Verifying an implementation of a novel modular inversion algorithm using a proof assistant. How guaranteeing Bitcoin cryptography is handled correc...

It was more than a store; it was a statement. Join @Adam Back for a throwback to the first-ever Lightning store powered by the original Core Lightning team of Rusty Russell and Christian Decker. #Reckless

Blockstream CEO @Adam Back shares his personal stories with NTUT students, recounting when he received his first computer (at age 13) and discussing the low-level programming languages that piqued his interest in university.

Latest updates: Blockstream collaborates with Tether and Bitfinex in establishing a local research lab at the National Taipei University of Technology (NTUT), with CEO @Adam Back presenting five students with scholarships to launch the initiative.

The second day of the Liquid Developer Bootcamp has come to a close. Nearly 40 software developers participated, gaining hands-on experience with the @Liquid Network Wallet Kit, Blockstream AMP, @Boltz - Non-Custodial Bitcoin Bridge swaps, and other layer-2 technologies. A huge thank you to all the local sponsors, attendees and instructors! Onward! 🙏

The @Liquid Network Developer Bootcamp is now in full swing! Engineers from Blockstream and Boltz have teamed up to lead a two-day onboarding session, helping local talent move from EVM to Bitcoin and Liquid to facilitate RWAs in Taiwan.

Another update from the field: @Adam Back spoke to Taiwan Parliament about the opportunity to build a robust capital markets system on Bitcoin technology. He also echoed legislators' positive sentiments on the potential for a Bitcoin ETF. https://blocktempo.com/adam-back-has-speech-on-bitcoin-layer-2-at-taiwan-legislative-yuan/

Blockstream Update: During day two of the Taiwan Blockchain Summit, Blockstream CEO @Adam Back continued Bitcoin activities with a keynote, meeting with members of the media and participating in a panel led by Bitfinex Securities covering the potential of RWAs in Taiwan and Asia.

Montreal, QC, Nov. 19, 2024. We’re thrilled to welcome Sean Bill as our Chief Investment Officer to lead Blockstream’s new Asset Management Division. --- Sean Bill brings over 30 years of experience in traditional finance, including roles as CIO at Prime Meridian Capital Management and Treasurer at Santa Clara VTA. He’s a recognized leader and advocate for Bitcoin adoption in institutional portfolios.

X (formerly Twitter)

Prime Meridian Capital Management (@PMIfunds) on X

Prime Meridian wins another Hedgweek award. @macrocrunch, CIO Sean Bill picked up the trophy in New York.

--- Sean will lead the creation of Bitcoin-based financial and investment solutions, leveraging Blockstream’s technology stack, including the Liquid Network. “Bitcoin is hitting all-time highs and institutional interest is unprecedented.” – @Adam Back, CEO. --- New Bitcoin financial products in development: → Bitcoin Yield Fund: Aims to function like a money market fund for Bitcoin holders. → USD Yield Fund: Offers lending opportunities via bitcoin-backed loans. These products enhance liquidity for Bitcoin holders seeking yield or access to capital. --- These solutions will run on our Asset Management Platform (AMP), enabling tokenized assets on the @Liquid Network . AMP ensures security, scalability, and compliance with AML/KYC standards, bridging Bitcoin and mainstream finance.

Blockstream: Bitcoin and digital asset infrastructure

Blockstream AMP: Digitize your assets

Issue and manage digital assets on the Liquid Network with Blockstream AMP’s flexible API.

--- The Liquid Network already supports $1.8B in real-world assets (RWAs), including stablecoins and securities, representing nearly 15% of the blockchain-based RWA market.

The Liquid Network

The Liquid Network: The Financial Layer for Bitcoin Capital Markets

Liquid is an open-source Bitcoin layer-2 that enables fast, confidential bitcoin payments and secure asset issuance.

--- Sean’s leadership will drive Blockstream’s vision of end-to-end Bitcoin-based financial solutions forward, delivering innovative products tailored to growing institutional demand. --- “I’m excited to join Blockstream at such a pivotal time. Together, we’ll create superior financial products that meet the evolving needs of the market.” – Sean Bill, CIO Full press release:

Blockstream: Bitcoin and digital asset infrastructure

Blockstream Appoints Sean Bill as Chief Investment Officer to Lead New Asset Management Division

Award-winning hedge fund leader to drive Blockstream’s strategic expansion towards end-to-end, Bitcoin-based financial and investment solutions.

Blockstream CEO @Adam Back has officially kicked off the 9th Annual Taiwan Blockchain Summit, alongside Taiwan Minister of Digital Affairs, Huang Yen-nun. Next up for Blockstream: a panel to discuss RWAs on @Liquid Network and a two-day technical bootcamp with local developers. 🌊 ⚡️

With Bitcoin hitting all-time highs, self-custody isn’t just an option—it’s essential. Leaving BTC on an exchange? A risky bet. The real choice: hot wallet vs. cold wallet. Understanding the trade-offs between managing Bitcoin on internet-connected devices or a hardware wallet is key to safeguarding your BTC. 🧵 --- Hot wallets are always connected to the internet, making them convenient for quick transactions but vulnerable to online threats. They include web wallets, mobile wallets, and desktop wallets. While each offers benefits, their constant internet connection exposes them to potential risks. --- Web wallets are the least secure, with private keys stored in the browser or on a web server. This high exposure means your assets are only as safe as the browser’s defenses - high convenience, high risk. Web wallets aren’t recommended for long- or mid-term Bitcoin holdings but are useful for quick payments or connecting to websites. --- Mobile wallets, like Blockstream Green, BlueWallet, and Muun, offer slightly more security, with private keys stored on your phone. Phones generally have secure elements for key protection, but mobile wallets are still online, meaning your Bitcoin remains at risk if the device is compromised. Mobile wallets are great for day-to-day payments and mid-term holdings but aren’t suited for long-term storage of large holdings. --- Blockstream Green allows users to add an extra layer of security for larger or long-term holdings on a mobile wallet by offering 2FA-protected accounts. This enhanced security means an attacker would need both your recovery phrase and 2FA to access your wallet. Setting up multiple 2FA methods is recommended, prioritizing the authenticator app on a separate device, with options like email, SMS, or call as backups. --- Desktop wallets, such as Blockstream Green, Sparrow, and Electrum, run on your computer and store private keys locally. While they’re generally safer than web wallets, desktop wallets are still exposed to online threats. Malware or viruses can compromise your keys, making desktop wallets more secure than web or mobile wallets but not invulnerable.

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--- Blockstream Green on desktop also offers 2FA-protected accounts, adding a strong layer of defense: even if someone gains access to your device or knows your PIN, they can’t spend your funds without your 2FA method. Even if someone has your primary recovery phrase, 2FA is still required for fund access. However, if you lose your 2FA method, you won’t be able to access your funds for ~ 365 days until the CSV timelock expires.

Blockstream Help Center

2FA Multisig protection explained

If you chose a 2FA Protected account (formerly Multisig Shield) as your security policy, the Blockstream app adds an extra layer of security to you...

--- Using a Bitcoin node, like Bitcoin Core, connects you directly to the network, adding control by bypassing third-party servers. However, if private keys are stored on an internet-connected computer, they’re still at risk. Pairing a Bitcoin Core node with a hardware wallet through Hardware Wallet Integration (HWI)—a solution developed by Blockstream Research’s achow101 - significantly enhances security by keeping keys offline, though it requires careful setup.

GitHub

GitHub - bitcoin-core/HWI: Bitcoin Hardware Wallet Interface

Bitcoin Hardware Wallet Interface. Contribute to bitcoin-core/HWI development by creating an account on GitHub.

--- Cold wallets, also known as hardware wallets, are designed for ultimate security. A hardware wallet like Blockstream Jade generates and stores your private keys offline, making them virtually immune to remote attacks. When a hardware wallet is paired with a hot wallet for transaction signing, the hot wallet coordinates the transaction, sends it to the hardware wallet for signing, then the hardware wallet sends it back to the hot wallet to broadcast. --- With a hardware wallet, your keys are generated offline and never touch an internet-connected device. https://store.blockstream.com/jade --- In the end, each wallet type has its role, but for the highest security, an open-source hardware wallet - a cold wallet - is essential for safeguarding Bitcoin. Don’t wait until you have a hardware wallet to start self-custody. A mobile wallet is fine for beginners - practice backing up, sending, and receiving Bitcoin now. As your holdings grow, you can upgrade to a hardware wallet for added security

Learn from our CEO @Adam Back how the @Liquid Network and Blockstream AMP enable Bitcoin like trading, but with assets like Micro Strategy stock for verified participants.

We’re 84,700% sure you should take self-custody of your Bitcoin with Jade and Green wallet today. Maybe even 42,350% sure you should use both together. Don't wait - take self-custody of your Bitcoin today. Download Blockstream Green and get it off the exchange.

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Comfortable using a mobile wallet? It may be time to upgrade your security with a Jade hardware wallet. https://store.blockstream.com/jade

On the blockchain, you can’t sell what you don’t own. Our CEO @Adam Back explains the capabilities of the @Liquid Network at Baltic Honeybadger by @Hodl Hodl.

On the brink of a possible Bitcoin strategic reserve, here’s a reminder to self-custody. Blockstream Green on desktop offers powerful tools for managing your HODL stack: track price, monitor fees, and organize your UTXOs with coin control.

With Bitcoin reaching new heights, there’s no better time to invest in a hardware wallet and secure your assets off exchanges. https://store.blockstream.com/jade

Today marks the release of the #Bitcoin whitepaper in 2008—a bold idea that’s now reshaping finance and freedom for millions. Here’s to the hodlers, haters, and developers who keep moving Bitcoin forward. Share the whitepaper with a friend here. ⬇️ https://blockstream.com/bitcoin.pdf