COLDCARD Mk4 v5.4.2 & Q v1.3.2: Co-sign and Key Teleport
The latest firmware updates for COLDCARD devices introduce two major features: COLDCARD Co-sign (CCC) and Key Teleport between two COLDCARD Q devices using QR codes and/or NFC with a website.
https://www.nobsbitcoin.com/coldcard-mk4-v5-4-2-q-v1-3-2/
npub1hx…qagw3
2025-04-19 16:23:59 UTC
Author Public Key
npub1hxjnw53mhghumt590kgd3fmqme8jzwwflyxesmm50nnapmqdzu7swqagw3Seen on
wss://nostr.winePublished at
2025-04-19 16:23:59 UTCEvent JSON
{
"id": "da75137dc527b7b8204d645f2c86e816063e4db42c132dc382188c5e677c77a5",
"pubkey": "b9a537523bba2fcdae857d90d8a760de4f2139c9f90d986f747ce7d0ec0d173d",
"created_at": 1745079839,
"kind": 1,
"tags": [
[
"r",
"wss://relay.nostr.band/",
"write"
],
[
"r",
"wss://ditto.pub/relay"
],
[
"r",
"wss://relay.primal.net/",
"write"
],
[
"r",
"wss://wot.utxo.one/",
"read"
],
[
"r",
"wss://relay.damus.io/"
],
[
"r",
"wss://nostr.wine/"
]
],
"content": "COLDCARD Mk4 v5.4.2 \u0026 Q v1.3.2: Co-sign and Key Teleport\n\nThe latest firmware updates for COLDCARD devices introduce two major features: COLDCARD Co-sign (CCC) and Key Teleport between two COLDCARD Q devices using QR codes and/or NFC with a website.\n\nhttps://www.nobsbitcoin.com/coldcard-mk4-v5-4-2-q-v1-3-2/",
"sig": "4009a6f3489ccaa717bbdef667c10c44f0fe63de4c0a310c1ecf8ed91b63d4279a9ac70751b90b0b4abc54139e6f2ee3f007bfd47de60852aeae4bb3619ca774"
}