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COLDCARD

@COLDCARDwallet • 64,809 subscribers

Sleep at Night Technology! The best #bitcoin hardware wallet 🙌 Ultra-secure.The only dedicated air-gapped. Backup on SEEDPLATE from @Coinkite

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Most people make self-custody harder than it needs to be. COLDCARD keeps self-custody simple. We’re giving away a COLDCARD Q to help someone do it right. 🧡 👉 Like 🔁 Repost 💬 Reply with one COLDCARD feature you couldn’t live without

Most people make self-custody harder than it needs to be. COLDCARD keeps self-custody simple. We’re giving away a COLDCARD Q to help someone do it right. 🧡 👉 Like 🔁 Repost 💬 Reply with one COLDCARD feature you couldn’t live without

42,732 просмотров

Give your COLDCARD a nickname. It’ll greet you every time you power on, proof it’s the real deal. We’re giving away a COLDCARD Q. To enter just repost + reply with your best nickname idea (the funnier, the better 🤣)

Give your COLDCARD a nickname. It’ll greet you every time you power on, proof it’s the real deal. We’re giving away a COLDCARD Q. To enter just repost + reply with your best nickname idea (the funnier, the better 🤣)

16,542 просмотров

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Checking the balance of an OPENDIME on a BLOCKCLOCK never gets old. Plug it in and watch the sats appear. Physical Bitcoin. Physical display. We’re celebrating 10 years of OPENDIME with 10% off all products at 🎉

Checking the balance of an OPENDIME on a BLOCKCLOCK never gets old. Plug it in and watch the sats appear. Physical Bitcoin. Physical display. We’re celebrating 10 years of OPENDIME with 10% off all products at 🎉

14,582 просмотров • 2 дней назад

The COLDCARD Mk5 is here. 🔥🔥🔥 Big Screen, Fantastic Keypad, Fast NFC, Backwards Compatible for seamless upgrade. Quantum Bitcoin Awesomeness

The COLDCARD Mk5 is here. 🔥🔥🔥 Big Screen, Fantastic Keypad, Fast NFC, Backwards Compatible for seamless upgrade. Quantum Bitcoin Awesomeness

130,118 просмотров • 2 месяцев назад

Self-custody shouldn’t feel difficult. COLDCARD keeps Bitcoin security simple without sacrificing advanced features. Easy to use, Hard to outgrow. We’re giving away a COLDCARD Q! To enter: • Like this post • Repost • Comment, why self-custody is a non-negotiable

Self-custody shouldn’t feel difficult. COLDCARD keeps Bitcoin security simple without sacrificing advanced features. Easy to use, Hard to outgrow. We’re giving away a COLDCARD Q! To enter: • Like this post • Repost • Comment, why self-custody is a non-negotiable

11,057 просмотров • 7 дней назад

The COLDCARD Q is built for Bitcoiners. Clean QR signing, airgapped security, and a focus on simplicity. We’re giving one away. To enter: • Like 👍 • Repost 🔁 • Comment why you want a Q 👇

The COLDCARD Q is built for Bitcoiners. Clean QR signing, airgapped security, and a focus on simplicity. We’re giving one away. To enter: • Like 👍 • Repost 🔁 • Comment why you want a Q 👇

23,494 просмотров • 28 дней назад

“What if someone forced you to unlock your hardware wallet?” That’s where COLDCARD Trick PINs come in. Different PINs. Different outcomes. We’re giving away a COLDCARD Q 👇 To enter: • Like • Repost • Comment how COLDCARD would level up your Bitcoin security

“What if someone forced you to unlock your hardware wallet?” That’s where COLDCARD Trick PINs come in. Different PINs. Different outcomes. We’re giving away a COLDCARD Q 👇 To enter: • Like • Repost • Comment how COLDCARD would level up your Bitcoin security

17,111 просмотров • 21 дней назад

#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

#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

111,231 просмотров • 8 месяцев назад

SATSCARD makes Bitcoin feel physical It’s simple: - Load sats onto the card - Tap to check the balance - Pass it along What’s the perfect moment to pass along a SATSCARD?

SATSCARD makes Bitcoin feel physical It’s simple: - Load sats onto the card - Tap to check the balance - Pass it along What’s the perfect moment to pass along a SATSCARD?

13,715 просмотров • 22 дней назад

MicroSD 2FA on the COLDCARD adds a physical second factor. Pair it to a specific microSD card and it won’t unlock without it, even with the correct PIN. No card or wrong card = seed wiped. We’re giving away an Mk5. To enter: Like, repost, and comment why you want to win one.

MicroSD 2FA on the COLDCARD adds a physical second factor. Pair it to a specific microSD card and it won’t unlock without it, even with the correct PIN. No card or wrong card = seed wiped. We’re giving away an Mk5. To enter: Like, repost, and comment why you want to win one.

19,828 просмотров • 1 месяц назад

#COLDCARD Q final tease before we start shipping🔥🔥🔥🔥🔥 Are you ready for this? Volume up 🎧

#COLDCARD Q final tease before we start shipping🔥🔥🔥🔥🔥 Are you ready for this? Volume up 🎧

274,267 просмотров • 2 лет назад

It’s never been easier to broadcast a transaction. PushTX lets you broadcast signed transactions directly from your device using NFC. Just tap and broadcast.

It’s never been easier to broadcast a transaction. PushTX lets you broadcast signed transactions directly from your device using NFC. Just tap and broadcast.

13,331 просмотров • 23 дней назад

#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 and select service provider, or your own webpage. More at pushtx org. You can also use this to broadcast any transaction found on the MicroSD card (See Tools > NFC Tools > Push Transaction). 🕵️‍♂️ Transaction Output Explorer: allows viewing all output details for larger txn (10+ output, 20+ change) before signing. Offered for large transactions only because we are already showing all the details for typical transactions. 🏷️ Setting to enable always showing XFP as first item in home menu. Enhancement: ⏫ When signing, show sum of outgoing value at top. Always show number of inputs/outputs and total change value. ⏫ Add Sign PSBT shortcut to NFC Tools menu ⏫ Stricter p2sh-p2wpkh validation checks. ⏫ Show master XFP of BIP-85 derived wallet in story before activation. Only words and extended private key cases. ⏫ Add Theya option to Export Wallet ⏫ Mention the need to remove old duress wallets before locking down temporary seed. Bugfix: 👨‍🔧 Fix PSBTv2 PSBT_GLOBAL_TX_MODIFIABLE parsing. 👨‍🔧 Decrypting Tapsigner backup failed even for correct key. 👨‍🔧 Clear any pending keystrokes before PSBT approval screen. 👨‍🔧 Display max 20 change outputs in when signing, and max 10 of largest outputs, and offer the Transaction Output Explorer if more to be seen. 👨‍🔧 Calculate progress bar correctly in Address Explorer after first page. 👨‍🔧 Search also Wrapped Segwit single sig addresses if P2SH address provided, not just multisig (multisig has precedence for P2SH addresses) 👨‍🔧 Address search would not find addresses for non-zero account numbers that had been exported but not yet seen in a PSBT. ## Mk4 Specific Changes 5.3.2 - 2024-06-26 👨‍🔧 Displaying change address in Address Explorer fails if NFC and Vdisk not enabled. ## Q Specific Changes 1.2.2Q - 2024-06-26 ⏫ Coldcard multisg export/import format detected in Scan Any QR Code. ⏫ Support newer-version QR scanner modules. 👨‍🔧 Exporting BIP-85 derived entropy via NFC was offered even when NFC disabled, leading to a Yikes error.

#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 and select service provider, or your own webpage. More at pushtx org. You can also use this to broadcast any transaction found on the MicroSD card (See Tools > NFC Tools > Push Transaction). 🕵️‍♂️ Transaction Output Explorer: allows viewing all output details for larger txn (10+ output, 20+ change) before signing. Offered for large transactions only because we are already showing all the details for typical transactions. 🏷️ Setting to enable always showing XFP as first item in home menu. Enhancement: ⏫ When signing, show sum of outgoing value at top. Always show number of inputs/outputs and total change value. ⏫ Add Sign PSBT shortcut to NFC Tools menu ⏫ Stricter p2sh-p2wpkh validation checks. ⏫ Show master XFP of BIP-85 derived wallet in story before activation. Only words and extended private key cases. ⏫ Add Theya option to Export Wallet ⏫ Mention the need to remove old duress wallets before locking down temporary seed. Bugfix: 👨‍🔧 Fix PSBTv2 PSBT_GLOBAL_TX_MODIFIABLE parsing. 👨‍🔧 Decrypting Tapsigner backup failed even for correct key. 👨‍🔧 Clear any pending keystrokes before PSBT approval screen. 👨‍🔧 Display max 20 change outputs in when signing, and max 10 of largest outputs, and offer the Transaction Output Explorer if more to be seen. 👨‍🔧 Calculate progress bar correctly in Address Explorer after first page. 👨‍🔧 Search also Wrapped Segwit single sig addresses if P2SH address provided, not just multisig (multisig has precedence for P2SH addresses) 👨‍🔧 Address search would not find addresses for non-zero account numbers that had been exported but not yet seen in a PSBT. ## Mk4 Specific Changes 5.3.2 - 2024-06-26 👨‍🔧 Displaying change address in Address Explorer fails if NFC and Vdisk not enabled. ## Q Specific Changes 1.2.2Q - 2024-06-26 ⏫ Coldcard multisg export/import format detected in Scan Any QR Code. ⏫ Support newer-version QR scanner modules. 👨‍🔧 Exporting BIP-85 derived entropy via NFC was offered even when NFC disabled, leading to a Yikes error.

210,951 просмотров • 1 год назад

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.

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.

78,521 просмотров • 8 месяцев назад

Your Bitcoin should only move on your terms. COLDCARD’s Spending Policy + 2FA makes that possible: rules for magnitude, velocity, address whitelists + extra security with 2FA. We’re giving away a COLDCARD Q so you can set up your own policy. Like + Repost + Comment to enter 🎉

Your Bitcoin should only move on your terms. COLDCARD’s Spending Policy + 2FA makes that possible: rules for magnitude, velocity, address whitelists + extra security with 2FA. We’re giving away a COLDCARD Q so you can set up your own policy. Like + Repost + Comment to enter 🎉

63,254 просмотров • 7 месяцев назад

The COLDCARD Mk5 in action. 🚀

The COLDCARD Mk5 in action. 🚀

25,386 просмотров • 2 месяцев назад

The difference between buying Bitcoin and owning Bitcoin is self-custody. We're giving away a COLDCARD Q to help someone take that step. 🔐 To enter: - Like - Repost - Comment your favorite thing about the COLDCARD Q.

The difference between buying Bitcoin and owning Bitcoin is self-custody. We're giving away a COLDCARD Q to help someone take that step. 🔐 To enter: - Like - Repost - Comment your favorite thing about the COLDCARD Q.

26,305 просмотров • 3 месяцев назад

Bitcoin self-custody made simple. COLDCARD + @BullBitcoin_ = serious security with a simple flow. We’re giving away a COLDCARD Q so you can try it yourself. To enter: - Like - Repost - Comment why you’re bullish on Bitcoin 👇

Bitcoin self-custody made simple. COLDCARD + @BullBitcoin_ = serious security with a simple flow. We’re giving away a COLDCARD Q so you can try it yourself. To enter: - Like - Repost - Comment why you’re bullish on Bitcoin 👇

49,693 просмотров • 7 месяцев назад

🚨GIVEAWAY 🚨 📈 Bitcoin hit ATH this week. Your security should be at an ATH too. We’re giving away a COLDCARD Q to help you with that. To Enter: - Follow COLDCARD - Retweet - Comment the worst way to store your Bitcoin (for laughs)

🚨GIVEAWAY 🚨 📈 Bitcoin hit ATH this week. Your security should be at an ATH too. We’re giving away a COLDCARD Q to help you with that. To Enter: - Follow COLDCARD - Retweet - Comment the worst way to store your Bitcoin (for laughs)

63,658 просмотров • 10 месяцев назад

COLDCARD + Cove makes self-custody extremely simple. Quick setup. Clear work flow. No guesswork. This walkthrough shows how it works. We're giving away a COLDCARD Q to help some upgrade their self-custody. To Enter: - Like - Repost - Comment why self-custody matters 👇

COLDCARD + Cove makes self-custody extremely simple. Quick setup. Clear work flow. No guesswork. This walkthrough shows how it works. We're giving away a COLDCARD Q to help some upgrade their self-custody. To Enter: - Like - Repost - Comment why self-custody matters 👇

18,299 просмотров • 2 месяцев назад

If your hardware only works with one app, that’s not self-custody. COLDCARD lets you build the setup that fits you. We’re giving away a COLDCARD Q to help someone upgrade their #Bitcoin security. To enter: - Like - Repost - Comment why you want to win a COLDCARD Q

If your hardware only works with one app, that’s not self-custody. COLDCARD lets you build the setup that fits you. We’re giving away a COLDCARD Q to help someone upgrade their #Bitcoin security. To enter: - Like - Repost - Comment why you want to win a COLDCARD Q

34,986 просмотров • 6 месяцев назад

🚨 GIVEAWAY 🚨 We’re giving away a COLDCARD Q, the most advanced Bitcoin hardware wallet. Featuring: ✅ On-device co-signing ✅ Custom spending policies ✅ Secure multisig with CCC To enter: 1 - Like 2 - Repost 3 - Comment your favorite COLDCARD feature

🚨 GIVEAWAY 🚨 We’re giving away a COLDCARD Q, the most advanced Bitcoin hardware wallet. Featuring: ✅ On-device co-signing ✅ Custom spending policies ✅ Secure multisig with CCC To enter: 1 - Like 2 - Repost 3 - Comment your favorite COLDCARD feature

43,562 просмотров • 10 месяцев назад