Keystone Hardware Wallet丨Bitcoin-Only

Security and Simplicity on a Hardware Wallet with #Bitcoin Only Firmware.

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[Keystone Hardware Wallet丨Bitcoin-Only @KeystoneForBTC]

Every year, our Bitcoin community retells this story 🍕

This year, we built something to capture its significance.

Pizza Day Limited Edition Keystone 3 Pro for $149 with code 'Pizza'.
Ends by May 24.

Grab yours before it's gone ⏳

[Keystone Hardware Wallet @KeystoneWallet]

Bitcoin had to buy pizza before it could buy everything else 🤤

On May 22, 2010, Laszlo Hanyecz paid 10,000 BTC for two pizzas. Nobody stopped him. Nobody could have.

Every Bitcoin holder eventually becomes a pizza historian. And every pizza historian deserves a wallet worthy of the syllabus.

🍕 Pizza Day Limited Edition Keystone 3 Pro
→ $149 with the code 'Pizza' –— May 18–24 only

Good pizza disappears in minutes.
Good self-custody lasts forever.

Laszlo only got one of those right.

[Keystone Hardware Wallet丨Bitcoin-Only @KeystoneForBTC]

Attending @MadBitcoin_2026 in Spain? 🇪🇸

Stop by @Alvaro_DMaria's BTC consulting booth, and check out the Keystone hardware wallet while you're there.

Got yours already? Tell us what convinced you 👇

[Álvaro D. María @Alvaro_DMaria]

Ya estamos en @MadBitcoin_2026 🫡

4 ejemplares vendidos de Micrópolis antes de abrir el booth 😅

[Keystone Hardware Wallet丨Bitcoin-Only @KeystoneForBTC]

"Bitcoin Under the Worst Possible Conditions."
First Bitcoin Magazine cover.

BTC was $5. The world laughed. A teenage Vitalik and a few believers printed magazines anyway.

14 years later? Still the loudest voice in Bitcoin.
Happy 14th, @BitcoinMagazine 🎂

[Keystone Hardware Wallet丨Bitcoin-Only @KeystoneForBTC]

Your BTC transactions just got safer ⚡️

Keystone v2.4.2 now shows SIGHASH flag details before you sign, including warnings for risky flags like SIGHASH_NONE, SINGLE, and ANYONECANPAY.

More clarity. No more blind signing.

Update today and see exactly what you're approving 💪

[Keystone Hardware Wallet @KeystoneWallet]

Screenshot your seed phrase? SparkCat is coming for you ⚠️

Kaspersky uncovered SparkCat's new tricks: hiding in fake corporate apps and food delivery software, using code virtualization to dodge detection.

Removed from official stores, it's now spreading through shady third-party app stores.

How to stay safe:
→ Never install unknown apps, even from legit stores
→ Avoid third-party app stores entirely
→ Don't grant unnecessary permissions

The real fix:
Generate and store your seed phrase offline with a hardware wallet.

Physical isolation = complete immunity to OCR stealers like SparkCat.

Your crypto. Your responsibility. Protect it right.

[Keystone Hardware Wallet丨Bitcoin-Only @KeystoneForBTC]

@bitcoinpolicy This comes off like recycled FUD.
Bitcoin wasn’t just designed to be decentralized in how it runs, but also in how it’s perceived.
Satoshi Nakamoto stayed anonymous for a reason, removing any central figure that could influence or overshadow the system.

[Keystone Hardware Wallet @KeystoneWallet]

Stop asking "which hardware wallet should I buy?"
Start asking "which attack vectors does it actually close?" 💡

Most hardware wallets leave the same critical gaps open as the hot wallets you're trying to escape.

Going offline solves one problem, but attackers have seven other ways in.

1. Weak entropy breaks everything
Your device generates keys "offline" using predictable algorithms - the same flaw that drained Lubian Mining users for $100M+.
Keystone uses the two secure elements to boost randomness for a strong seed phrase.

2. Blind signing makes you vulnerable
Most hardware wallets can't decode smart contract calls. You're trusting whatever the dApp shows you: one malicious interface and your "secure" device signs everything away.

Keystone decodes transactions on its air-gapped screen before you sign to give you offline safety and signing clarity.

3. Tampered before you open the box
Devices get intercepted during shipping, backdoors installed, then resealed. Keystone ships with tamper-evident packaging and on-device verification to give you the peace of mind and confidence.

4. Closed source = blind trust
Can't audit the code? You're trusting strangers with your life savings. Keystone is fully open-source, making it open to researchers and security experts worldwide for verification and collaboration.

5. Physical threats expose everything
One seed phrase = total loss.
Keystone supports three independent seeds. So, hand over the decoy, protect your real stack and yourself.

6. Single point of failure
One secure element means one vulnerability ends you. Keystone splits seeds across multiple SEs from different makers, making it twice as secure as most hwws.

7. No anti-tamper = silent theft
A physical attacker opens your device, extracts keys, and steals your funds. You'd have a really low window to act.

Keystone wipes data instantly when breached, leaving the attackers with a bricked device.

8. Side-channel attacks bypass everything else:
These attacks push the SE to its limits and expose keys to the attackers. Multi-SE architecture makes this exponentially harder for the attacker and increases your time window to move your funds to safety before it's too late.

If your hardware wallet meaningfully reduces these risks, then you’re not just “offline.”

You’re actually secure.

[Keystone Hardware Wallet @KeystoneWallet]

Happy Birthday, Satoshi ⚡️
51 today (according to his P2P Foundation profile).

Obviously fake. But April 5 wasn't random:
1933: Roosevelt's EO 6102 - the US gov confiscates civilian gold.
1975: Americans regain the right to own gold.

Satoshi picked the date that symbolizes why Bitcoin exists.

A rebuke to government overreach. A declaration for decentralized money.

[Keystone Hardware Wallet丨Bitcoin-Only @KeystoneForBTC]

⚡️ Time to update your BTC-Only Keystone 3 Pro!

The latest firmware 2.4.0 brings critical security improvements to make your Keystone more robust.

Update today, and make sure your circle sees this 🤝

[Keystone Hardware Wallet @KeystoneWallet]

🔐 Important security upgrade for Keystone 3 Pro!

The latest firmware, 2.4.0, strengthens device security across Multi-coin, Cypherpunk & BTC-only versions.

Update yours today, and share this with your Keystone circle 🤝

[Keystone Hardware Wallet丨Bitcoin-Only @KeystoneForBTC]

Most companies keep your shipping data indefinitely, putting it at risk of breaches.

Keystone deletes it permanently, 180 days after your order, or sooner on request 🛡️

Prefer no delivery trail at all? Private pickup is available.
Your data. Your privacy. Your control.

[Fin Creighton @FinCreighton]

Ledger/Trezor leaks turn your personal data into a target as your stack grows.

Non‑KYC equipment + companies that wipe customer records is the move.

Privacy is part of self-custody.

[Keystone Hardware Wallet丨Bitcoin-Only @KeystoneForBTC]

Most Bitcoin retirement takes miss the point entirely!

The conversation always drifts toward massive stacks:
→ How much do you need?
→ How late are you?
→ Why didn't you buy years ago?

It's noise.
And it's keeping most people out.

Bitcoin's fixed supply and halving cycle structurally favor long-term holders. Not just whales or early adopters, but anyone consistent enough to let time do the work.

Dollar-cost averaging isn't exciting.
An air-gapped hardware wallet sitting in a drawer isn't exciting.
A stainless steel plate with your seed phrase stamped into it isn't exciting.

But that's exactly what a real retirement plan looks like: boring, consistent, and fully in your control.

Exchanges are for buying and not for holding.
If your Bitcoin is still sitting on a platform, someone else holds the keys. Your retirement depends on them staying solvent.

Take custody. Back it up properly. Keep buying.

A modest stack built this way beats a bigger one built carelessly, every single time.

[Jason Ai. Williams @GoingParabolic]

Unpopular opinion:

1.6 BTC is going to be enough to retire with.

[Keystone Hardware Wallet丨Bitcoin-Only @KeystoneForBTC]

Bitcoin supply shock incoming 🔥

Exchange BTC reserve just hit a 7-year low: under 2.45M coins.

Less supply on exchanges = higher scarcity = more valuable BTC.

Secure yours off-exchange with Keystone 3 Pro BTC-Only ⚡️

[Keystone Hardware Wallet丨Bitcoin-Only @KeystoneForBTC]

Bitcoin is meant to be secured in cold storage 🔐

If enough people do it, we win ⚡️

[NICO⚡️ @BITVOLT]

Taking Bitcoin into cold storage is a revolutionary act. If enough people do it we win.

[Keystone Hardware Wallet丨Bitcoin-Only @KeystoneForBTC]

🛑 Stop overthinking multi-sig!

@CriptoNovedad made the clearest guide using @nunchuk_io + Keystone Pro(prev. gen), covering everything from setup to signing your first transaction.

If you've been putting this off, here's your sign to finally do it 👇

[Cripto Novedad @CriptoNovedad]

Guía definitiva para crear una billetera multifirma ( @nunchuk_io + hardware wallets) https://t.co/SfpJS4REiJ #coldcard #krux #keystone #passport #jade

[Keystone Hardware Wallet丨Bitcoin-Only @KeystoneForBTC]

Keystone 3 Pro + Bull wallet works like magic 🪄

@UnruggableGG created the PERFECT tutorial, covering everything from firmware updates to transaction signing,

Explained with crystal-clear precision.

If you love clean UX, you need to see this 👀

[BULLBITCOIN.COM @BULLBITCOIN_]

Learn how to connect your @KeystoneForBTC hardware device to the BULL Wallet in 5 minutes.

Install Keystone’s Bitcoin-only firmware, receive and broadcast transactions securely.

Watch the quick tutorial 🔗👇

[Keystone Hardware Wallet丨Bitcoin-Only @KeystoneForBTC]

@UnruggableGG @KeystoneWallet Well-made tutorial, GG 🔥
Love it!

[Keystone Hardware Wallet丨Bitcoin-Only @KeystoneForBTC]

Keystone 3 Pro meets @BullBitcoin_ wallet 🐂

The result?
BTC management that actually feels effortless.

QR signing that works like a breeze.
Security that never sleeps.

Try it out today and drop your feedback below 👇

[BULLBITCOIN.COM @BULLBITCOIN_]

BULL Wallet now supports @KeystoneWallet

• Use Keystone’s Bitcoin-only firmware
• Connect easily with QR codes
• Stack sats directly to your hardware wallet
• Spend securely with PSBT

100% self-sovereignty. No compromises.
Download BULL ↓

[Keystone Hardware Wallet丨Bitcoin-Only @KeystoneForBTC]

Your Keystone just got multilingual.

Our BTC-only firmware now supports Spanish, Japanese & German + @BullBitcoin_ wallet.

Better understanding → fewer errors → safer self-custody.

Update live. Drop your feature suggestion below.

[Keystone Hardware Wallet丨Bitcoin-Only @KeystoneForBTC]

If you use a Keystone 3 Pro, consider this update mandatory.

V-2.3.0 delivers:
• Taproot signing via @bluewalletio
• Faster BTC message signing
• Strengthened firmware security + stability

Update now.
Your wallet deserves its strongest version.

[Keystone Hardware Wallet @KeystoneWallet]

If you’ve ever said, “I’ll buy a hardware wallet later,”
That "later" is today 🎉

Our Black Friday Sale is live with 20% off on everything till Dec 5.

All at the lowest price of the year.

Secure your bags now & remind your hot-wallet friends to grab one!