Coinkite on Nostr: #COLDCARD Firmware Release 1.3.4Q & 5.4.4Mk4 🍄⏫ Read the complete release and ...
#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 ▶️
https://www.youtube.com/watch?v=Qd8ymRwrokg 
Published at
2025-09-30 12:19:05 UTCEvent JSON
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"pubkey": "56172b53f730750b40e63c501b16068dd96a245e7f0551675c0fec9817ee96e0",
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"content": "#COLDCARD Firmware Release 1.3.4Q \u0026 5.4.4Mk4 🍄⏫\n\n\n\nRead the complete release and upgrade here 📁 https://blog.coinkite.com/spending-policy\n\n🔐 Single-Sig Spending Policies \u0026 📱2FA!\n\nYou 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\n\nWe 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.\n\nAdded file rename, Explorer is now offered for transactions of all sizes, NFC improvement, Added @BullBitcoin_, and many other fixes and improvements!\n\nWatch the full video ▶️ \nhttps://www.youtube.com/watch?v=Qd8ymRwrokg\n\n\nhttps://blossom.primal.net/8db8960ac03c0cb55dcc988e7096e2473c7cd598acacf1964655d3069fc35624.png",
"sig": "6977565448818bf5b2ea77ebdc065059a92813a38f1e7e5c046c32fb213c5a9d1e0a23af951d06466502e5e144d5c2260d5ad76f211f1657b471532ee224b2b8"
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