Security and Simplicity on a Hardware Wallet with #Bitcoin Only Firmware. Follow us on Nostr: #npub16s4cnphx2k7ndmlt9qmurkdrrulcammg3jxnz0f9c7dhepqg38zqpp4p24
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Buy Keystone Anonymously 💪
The privacy-friendly PO Box delivery option is live now!
No home address needed. Order your Keystone to the nearest PO Box.
No data shared = no leak risk.
Combined with our existing privacy pickup option, this is a perfect addition to your privacy setup.
Your asset safety and personal safety are non-negotiable for us.
A few things to note before your PO Box order:
→ Ensure your PO Box is active and able to receive packages. Double-check the PO Box address before ordering.
→ Once tracking shows "Delivered," the package is considered delivered, and no further shipping claims can be initiated.
Privacy is for everyone 🔒
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Bitcoin natively supports multi-sig. No special wallet needed.
But our BTC-only firmware takes it further, making multi-sig safer and more seamless for serious Bitcoin users.
Here's what that looks like 👇
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When you sign a multi-sig transaction on Keystone, you see everything:
✅ Signing status
✅ Amount and fees
✅ From and To addresses
✅ Full xPub details
Small-screen wallets cut corners. We don't.
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Still using a signing device that's built for everything?
Time to switch to Keystone BTC-only for a rich, distraction-free Bitcoin experience!
Grab one today:
keyst.one/btc-only
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Don't sleep on this firmware update ⚡️
Keystone 3 Pro V3.1.0 is live for BTC users.
→ Better seed backup reminders during firmware updates & seed phrase generation
Skipping your seed backup is not an option in self-custody.
Update today and tell us which feature to add next.
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Multi-coin firmware carries code for every coin it supports, whether you hold them or not 🤦♂️
Keystone's BTC-only firmware drops all of that ⚡️
Separate codebase, smaller attack surface, deeper Bitcoin features.
Full breakdown here 👇
If you only hold Bitcoin, why is your signing device running code written for coins you'll never own?
That's not a philosophical question.
Because multi-coin firmware has to maintain its own protocol logic, cryptographic signing rules, and transaction construction for every coin it supports.
Each addition brings more code that needs to be reviewed, maintained, and kept secure, whether you use those coins or not. You're carrying that overhead by default.
Keystone's BTC-only firmware serves as the best alternative. Not a trimmed version of the multi-coin build, but a completely separate codebase written from scratch for Bitcoin.
When the codebase is smaller and purpose-built, security researchers can audit more of it and audit it properly. Fewer lines of code means fewer places for vulnerabilities to go unnoticed between review cycles, which makes for a structurally sounder security foundation overall.
BTC-only users also get access to advanced Bitcoin features that multi-coin firmware doesn't offer.
All three address formats:
- P2PKH (legacy), P2SH-P2WPKH (nested segwit), and P2WPKH (native segwit).
- PSBT (BIP-174) for air-gapped transaction signing via QR codes.
- Native multisig support, coinjoin, and the ability to connect your wallet to your own Bitcoin node for fully independent chain verification.
Plus, the wallet compatibility covers Sparrow, Electrum, BlueWallet, Specter, and everything a serious Bitcoin setup actually runs on.
Switch to BTC-only, and you're not giving anything up.
You're getting a leaner security foundation and a deeper Bitcoin feature set in the same move.
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Watch out, Bitcoin! event is almost here ⚡️
Oct 2–4 in Madrid, with a stacked lineup of speakers.
Grab your spot before it's gone.
P.S. WOB-branded Keystones are dropping at the event too. Don't miss out.
🔁 EL CARTEL DE WOB! '26
Todos los ponentes anunciados hasta hoy:
· Cris Carrascosa
· Alberto Mera
· Daniel Baeza
· Stark Privacy
· Javier Maestre
· Álvaro D. María
· Nick Anthony
· Karliatto
· Yonat Vaks
· Franco Amati
· Lunaticoin
· Jordi Llonch Esteve
· Guillaume Bajczman
· Chavo
· Luis Miguel Ortiz
· José Luis Landabaso
· José Antonio Bravo
· Laura Guzmán
📅 2-4 oct · Madrid
🎟️ Entradas: wobitcoin.org/#entradas
#WOB26 #WatchOutBitcoin #Bitcoin #Madrid #Ponentes #Speakers
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If you only hold Bitcoin, why is your signing device running code written for coins you'll never own?
That's not a philosophical question.
Because multi-coin firmware has to maintain its own protocol logic, cryptographic signing rules, and transaction construction for every coin it supports.
Each addition brings more code that needs to be reviewed, maintained, and kept secure, whether you use those coins or not. You're carrying that overhead by default.
Keystone's BTC-only firmware serves as the best alternative. Not a trimmed version of the multi-coin build, but a completely separate codebase written from scratch for Bitcoin.
When the codebase is smaller and purpose-built, security researchers can audit more of it and audit it properly. Fewer lines of code means fewer places for vulnerabilities to go unnoticed between review cycles, which makes for a structurally sounder security foundation overall.
BTC-only users also get access to advanced Bitcoin features that multi-coin firmware doesn't offer.
All three address formats:
- P2PKH (legacy), P2SH-P2WPKH (nested segwit), and P2WPKH (native segwit).
- PSBT (BIP-174) for air-gapped transaction signing via QR codes.
- Native multisig support, coinjoin, and the ability to connect your wallet to your own Bitcoin node for fully independent chain verification.
Plus, the wallet compatibility covers Sparrow, Electrum, BlueWallet, Specter, and everything a serious Bitcoin setup actually runs on.
Switch to BTC-only, and you're not giving anything up.
You're getting a leaner security foundation and a deeper Bitcoin feature set in the same move.
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Keystone Hardware Wallet丨Bitcoin-Only retweeted
Happy to support this initiative 🤝
Every time a serious bug surfaces, users' funds and years of builders' work are at stake.
Responsible disclosure exists to protect them, & not just vendors' reputation.
Find it quietly, fix it fast, update users, then talk.
That order saves people.
Glad to make this the industry standard together. We will hold up our end.
Respect to @P3b7_ & all our industry peers 🤝
Keystone wholeheartedly supports this 🤝
We've always believed security is stronger with multiple experts on it, not just one team. That's part of why we open-sourced our code, so researchers worldwide can scrutinize it, find gaps, and help us improve.
It's also how we've built partnerships with @SlowMist_Team, @BlockSecTeam, @Offside_Labs, @zknoxhq & @OneKey_Anzen to harden our codebase, and in every one of those, responsible disclosure made the difference. It gave us time to ship fixes and get our users updated before anything went public.
Now, AI is lowering the barrier to security research, and more people are finding bugs than ever. That's great for the community, but how that information gets handled matters a lot more when people's funds and years of builders' work are on the line.
That's exactly why responsible disclosure is a must.
We're glad to join our industry peers in making this the standard, and we'll hold up our end.
Respect to @P3b7_ for stepping up and leading this 🤝
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Bitcoin replaced trust with math.
Closed-source wallets put the trust back. You're signing with code you can't see, from a company you have to trust.
That's a contradiction.
Keystone BTC-Only firmware is fully open-source. Bitcoin's rules, applied to the device that holds it.
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Your input could shape the next-gen Keystone 🔥
Tell us what worked in the Keystone 3 Pro and what you want to see next.
Share your thoughts and get first access to future testing and interviews.
Take the survey now 👇
docs.google.com/forms/d/e/1F…
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Keystone Hardware Wallet丨Bitcoin-Only retweeted
Every item on this list exists because someone asked "but why should I trust you on that?"
Fair question.
So we removed ourselves from the answer 🫡
Keystone is one of the few signing devices that give you a fully trustless setup 🔐
Code? Verify and reproduce it.
Entropy? Roll dice and generate it yourself.
Signing? QR-based, verifiable on your end.
Seed generation? MCU + 2SE combine the randomness.
Your keys. Your rules.
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You hold the best asset. Help us give you the best self-custody experience!
What feature, integration, or support should Keystone 3 Pro have?
Big or small, drop it below and tell us why.
All the comments will be discussed with our team 🫡
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Keystone Hardware Wallet丨Bitcoin-Only retweeted
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Most people think a strong PIN is enough to protect a hardware wallet.
It's not.
If a determined attacker gets physical access to your device, they don't need your PIN at all. They go straight for the hardware.
We built the Keystone 3 Pro to handle exactly that 🧵👇
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Buy your Keystone 3 Pro with minimal traces:
- Burner email at checkout
- Ship to a PO Box
- Pay with Bitcoin
Less personal data shared = no data-leak worries.
Self-custody your privacy, not just your coins 🛡️
Buy Keystone Anonymously 💪
The privacy-friendly PO Box delivery option is live now!
No home address needed. Order your Keystone to the nearest PO Box.
No data shared = no leak risk.
Combined with our existing privacy pickup option, this is a perfect addition to your privacy setup.
Your asset safety and personal safety are non-negotiable for us.
A few things to note before your PO Box order:
→ Ensure your PO Box is active and able to receive packages. Double-check the PO Box address before ordering.
→ Once tracking shows "Delivered," the package is considered delivered, and no further shipping claims can be initiated.
Privacy is for everyone 🔒
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Excited to be partnering with @Wo_Bitcoin for #WOB26!
To celebrate WOB's 5th Anniversary, we've got an exclusive Keystone 3 Pro heading to Madrid.
Very limited units only.
If you're going, you already know what to do ⚡️
Keystone (@KeystoneWallet & @KeystoneForBTC) nos acompaña como partner.
Seguridad air-gapped, código abierto y transmisión por QR. Tienen un firmware exclusivo Bitcoin-only que reduce la superficie de ataque. Otra gran herramienta para tu soberanía.
🌐 keyst.one
📅 2-4 oct · Madrid
#WOB26 #Bitcoin #Madrid
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Keystone Hardware Wallet丨Bitcoin-Only retweeted
Very cool first step!
Yes, signature grinding is expensive, requiring hours of compute for one tx. Definitely not a sustainable option.
But it proves the point: quantum resistance on Bitcoin is achievable, not just theory anymore.
A protocol-level upgrade is still a must.
And when it comes, the whole stack has to move with it. Signing device included. New signature schemes mean new firmware, maybe new chips, new everything.
Post-quantum readiness is on our radar for sure.
A few months later - a Quantum Safe Bitcoin tx on mainnet: mempool.space/tx/305a24ffea9…
Thanks to StarkWare's @giladi_tom85141 taking this to the finish line and @MARAFoundation_ Slipstream mining this non-standard tx
Also @robin_linus & @Ethan_Heilman on previous work led to QSB
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