Many colors are starting to run out, take advantage of our biggest sale of the year!
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11/28/2025, 4 engagements
Coinkite
Coinkite: OPENDIME, 1st & only #Bitcoin bearer instrument. COLDCARD ultra-secure open hardware wallet. BLOCKCLOCK. TAPSIGNER. And more! est. block 141,000
Bitcoiners have been waiting for this. Our #BitcoinBlackFriday sale is LIVE 🔥
🔸 25% off when paying with BTC 🔸 20% off when paying with fiat 🔸 $50 off BLOCKCLOCK Mini
While supplies last.
11/18/2025, 17 engagements
#COLDCARD Firmware Release 1.3.4Q & 5.4.4Mk4 🍄⏫
Read the complete release and upgrade here 📁 https://blog.coinkite.com/spending-policy
🔐 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
We have also found a way to support 2FA authentication using the usual phone apps (RFC 6238). If that's enabled, you will not be able to spend using your #COLDCARD unless you also have your phone and provide the correct #GoogleAuthenticator 6-digit numeric code.
Added file rename, Explorer is now offered for transactions of all sizes, NFC improvement, Added @BullBitcoin_, and many other fixes and improvements!
Watch the full video ▶️
9/30/2025, 72 engagements
🌍
10/22/2024, 33 engagements
Good morning! Did you know COLDCARD invented an easy and safe way to help prevent evil-maid and tampering attacks?
We call it anti-phishing words, learn more here.
10/16/2024, 20 engagements
Good morning!
🔒#COLDCARD Ultra Easy Guide; The 5 minutes setup.
Are you just starting out? Need a quick and uncomplicated way to get going with your COLDCARD?
This video shows you the fastest and most simple way to get setup!
Learn how to dispose your COLDCARD Q securely.
9/28/2024, 3 engagements
Learn how to add a nickname to your #COLDCARD
Most of our users have multiple coldcards, labeling devices can be very useful!
Learn how to use #COLDCARD Q's covert calculator mode!
Learn more at coldcard.com
Tapscript is happening
9/6/2024, 18 engagements
🔒🔒🔒 #COLDCARD team takes minimizing supplier trust to the extreme!
We use 2️⃣ different vendors for secure elements, and the COLDCARD architecture requires 3️⃣ different chips to be broken in order to access the seed. 🔒🔒🔒
Learn more here https://blog.coinkite.com/understanding-mk4-security-model/
