COLDCARD
@COLDCARDwallet
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Sleep at Night Technology! The best #bitcoin hardware wallet. Ultra-secure. The only dedicated air-gapped. Backup on SEEDPLATE from @Coinkite
Bitcoin
Joined December 2017
#COLDCARD Firmware Update # Shared Mk4 & Q New Features: 📳 PushTX: once enabled with a service provider's URL, you can tap the COLDCARD and your phone will open a webpage that transmits your freshly-signed transaction onto the blockchain. See Settings > NFC Push Tx to enable
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FRESH ICE COLD COLDCARDS ARE BACK IN STOCK! 🥶🥶🥶 Get yourself Coldcard Q or Coldcard MK4 at https://t.co/RODPSgqgpe 🚀
coldhodl.com
COLDCARD Is The Most Trusted and Secure Bitcoin Signing Device (aka. Bitcoin Hardware Wallet)
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It's too easy to self custody, no excuses.
Holding #Bitcoin is one thing. Controlling how it moves is another. COLDCARD’s Spending Policy lets you set the rules: 💸 magnitude ⏱️ velocity 📜 whitelists Your keys, your conditions
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Finished my @COLDCARDwallet Q setup for my buddy. Coupled with @21e15MicroSeed backup. Hope the exchange has his bitcoin today, we will see….. Name a better combo, bet you can’t!
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Holding #Bitcoin is one thing. Controlling how it moves is another. COLDCARD’s Spending Policy lets you set the rules: 💸 magnitude ⏱️ velocity 📜 whitelists Your keys, your conditions
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COLDCARDに2FAが！ これは良アップデート。 Secure Element、Pin Codeと2FAの3of3になった。 Passphraseも入れたら4of4。 こういうのだよ。 こういうの！ 下手したらメタルプレートで保管するより安全かも（オススメはしないけど）。
#COLDCARD Firmware Release 1.3.4Q & 5.4.4Mk4 🍄⏫ 🔐 Single-Sig Spending Policies & 📱2FA! You can now reconfigure your existing COLDCARD with a policy📑, so it will refuse to sign transactions that are too large, too frequent, or sent to an address not on your whitelist 1/3
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If you acquire Bitcoin please understand that you need to send it to cold storage. Purchase Bitcoin from a BTC-ONLY exchange like @Strike or @TheBitcoinWell Invest in a Bitcoin-only hardware wallet like @COLDCARDwallet — or a desktop software like @SparrowWallet Learn UTXO
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Who makes the rules? You do. Who enforces them? Your COLDCARD. COLDCARD's new Spending Policy + 2FA lets you enforce rules before a single sat moves. Magnitude, velocity, whitelists, even 2FA. To celebrate, we're giving away a COLDCARD Q. Like, Comment and Repost to enter.
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When you're taking self-custody of Bitcoin, it's super important that you use a reputable, air-gapped hardware wallet. We're huge fans of @COLDCARDwallet. No affiliation, but we think they're pretty awesome! And, don't forget to back up your seed phrase!
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구글otp나 authy는 오프라인이어도 사용가능하구나,,, 두 기기 간 시간 동기화만 되어 있으면, 해당 시간에 해당하는 숫자를 생성해낼수 있고, 이를 TOTP(Time based one time password)라고 하네ㅋㅋSHA-1 함수 사용! 맨날 쓰면서도 몰랐음ㅋㅋㅋㅋ
#COLDCARD Firmware Release 1.3.4Q & 5.4.4Mk4 🍄⏫ 🔐 Single-Sig Spending Policies & 📱2FA! You can now reconfigure your existing COLDCARD with a policy📑, so it will refuse to sign transactions that are too large, too frequent, or sent to an address not on your whitelist 1/3
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This device does it all…and they keep adding features🤌
Who makes the rules? You do. Who enforces them? Your COLDCARD. COLDCARD's new Spending Policy + 2FA lets you enforce rules before a single sat moves. Magnitude, velocity, whitelists, even 2FA. To celebrate, we're giving away a COLDCARD Q. Like, Comment and Repost to enter.
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Sparrow v2.3.0 released with: Send to Silent Payments Pay to DNS address Min fee rate from server And more:
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Who makes the rules? You do. Who enforces them? Your COLDCARD. COLDCARD's new Spending Policy + 2FA lets you enforce rules before a single sat moves. Magnitude, velocity, whitelists, even 2FA. To celebrate, we're giving away a COLDCARD Q. Like, Comment and Repost to enter.
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Me acaba de llegar mi @COLDCARDwallet vamos a ver qué tal va esta belleza, mejorando la autocutodia de #bitcoin
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Was a game changer for multisig, after many requests; Now a Game changer for single sig too. COLDCARD's Spending policy enforced by hardware is super useful. The 2FA is just icing on the cake.
#COLDCARD Firmware Release 1.3.4Q & 5.4.4Mk4 🍄⏫ 🔐 Single-Sig Spending Policies & 📱2FA! You can now reconfigure your existing COLDCARD with a policy📑, so it will refuse to sign transactions that are too large, too frequent, or sent to an address not on your whitelist 1/3
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This is a big step. Announced like a normal update… We’re expecting hundreds of Qs to be sold before EOY, when plebs understand what is happening on the @COLDCARDwallet side. Interesting is, that competition in a different direction with different trade offs is there, but
#COLDCARD Firmware Release 1.3.4Q & 5.4.4Mk4 🍄⏫ 🔐 Single-Sig Spending Policies & 📱2FA! You can now reconfigure your existing COLDCARD with a policy📑, so it will refuse to sign transactions that are too large, too frequent, or sent to an address not on your whitelist 1/3
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DIGITAL FORT KNOX
#COLDCARD Firmware Release 1.3.4Q & 5.4.4Mk4 🍄⏫ 🔐 Single-Sig Spending Policies & 📱2FA! You can now reconfigure your existing COLDCARD with a policy📑, so it will refuse to sign transactions that are too large, too frequent, or sent to an address not on your whitelist 1/3
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