#coldcard
What if you could secure your Bitcoin without ever worrying about a seed phrase? Bitkey's Clay Garrett explains how it works — even if you lose your phone and the device. Plus: what Block's engineers found investigating the #Coldcard attack, and whether the hacker left a trail. Get 10% off Bitkey using code STORIES at *I do NOT earn commissions from sales of Bitkey with this code Shout out to Joel Bomgar at the end! TIMESTAMPS: 00:00 Intro 00:46 The Bug Behind the Coldcard Hack 4:15 Finding Another $40M in Stolen Bitcoin 5:18 The Clue That Could Identify the Hacker 9:12 How Bitkey Avoids Entropy Risk 10:31 Using AI to Find Wallet Weaknesses 13:38 How Bitkey’s 3-Key Security Works 18:39 Why Bitkey Doesn’t Use a Seed Phrase 22:56 How Bitkey Keeps Your Bitcoin Safe 26:55 Why Bitkey Added a Screen 29:26 What If You Lose Your Phone AND Bitkey? 32:21 Passing Your Bitcoin to Your Family 34:19 Protecting Against Copy-and-Paste Scams 36:25 Common Misconceptions About Bitkey 38:39 Why Self-Custody Matters 40:48 Automatically Buying Bitcoin to Bitkey 43:42 Block’s Bigger Bitcoin Vision
Natalie Brunell ⚡️152,513 görüntüleme • 18 gün önce
Jonathan Goodman lost more than 18 bitcoins he was saving for his family in the #Coldcard hack. He shares why he isn’t angry, whether he’s joining the lawsuits forming, his opinion now of self-custody, and the lessons he took from the experience. He’s also treating what happened as a test: “It’s lit a fire under me to rebuild the savings for my children….Prove yourself. You did this once. See if you can do it again.” TIMESTAMPS: 00:00 Trailer & Intro Jonathan Goodman 🇨🇦 00:37 The moment he found out he lost his Bitcoin 3:06 Why he trusted one device 4:33 Three backups, one flaw 5:56 How the company Coinkite responded 8:22 An hour on hold with police 13:52 What detectives told him 14:35 Telling his family 17:30 The critical error that caused $100 million losses 20:17 Class action lawsuits coming? 30:26 The risk nobody thinks to plan for 31:52 Watching the hacker move the coins 35:30 The strangers who showed up to help 38:43 Writing a book about the loss and lessons 41:11 To everyone else who lost coins 43:06 What he'd say to the founder 44:28 Will he hold his own keys again? 45:50 Why he never bet it all
Natalie Brunell ⚡️126,590 görüntüleme • 25 gün önce
#COLDCARD Q final tease before we start shipping🔥🔥🔥🔥🔥 Are you ready for this? Volume up 🎧
COLDCARD275,272 görüntüleme • 2 yıl önce
#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
COLDCARD111,310 görüntüleme • 11 ay önce
#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.
COLDCARD211,534 görüntüleme • 2 yıl önce
🔒🌱Learn more about #COLDCARD's unique seed management tools. There is no other hardware wallet like it! With Seed Vault & Temporary Seeds (read-only) you can make your setup as simple or as complex to match your needs. Load temporary seeds to sign, choose to store them, store pass-phrases or even SeedXOR parts for later combine.
COLDCARD10,596 görüntüleme • 2 yıl önce
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