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.
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
The fallback needs no state, so a lost device is never a lost wallet. More expensive to spend from, but always accessible.
@blksresearch Director @n1ckler on building a post-quantum scheme that stays safe even when hardware fails:
Spending on @Liquid_BTC 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
Selling Bitcoin is typically dangerous.
The price runs out of reach and you end up buying back higher.
Or out of the market entirely.
@adam3us on why Bitcoin investors are survivors.
Satoshi chose secp256k1 for Bitcoin’s cryptography.
@n1ckler and @blksresearch 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.
Bitcoin transactions could get cheaper by combining signatures across transactions.
DahLIAS is a new signature scheme being worked on by @blksresearch, a building block for cross-input signature aggregation (CISA).
Watch @real_or_random present DahLIAS in full at EUROCRYPT
Excited to share that our DahLIAS paper has been accepted to Eurocrypt 2026! 🎉
DahLIAS enables cross-input signature aggregation (CISA) on Bitcoin’s secp256k1 curve.
See you in Rome, May 10–14!
Thanks to @yannickseurin (@Ledger), @real_or_random & @n1ckler (@blksresearch)!
Full aggregation for BIP340 signatures, now as a draft BIP.
It specifies DahLIAS, an aggregate signature scheme and can serve as a basis for future cross-input signature aggregation (CISA) proposals.
Thanks to @fjahr for the spec work.
More background on DahLIAS 👇
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.
🔗 dashboard.blockstream.info
Bitcoin's neutrality is its edge.
@adam3us 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.
Q2 was Blockstream moving from research to release.
@blksresearch took post-quantum Bitcoin from a live deployment on @Liquid_BTC to OP_CHECKSHRINCS, a signature opcode the whole network can evaluate.
@BlockstreamJade became a three-model lineup, with the new Jade Core turning