r/coldcard is a subreddit with 6k members. The community frequently discusses coldcard, wallet, crypto, security, and seed, and the most common flair used is support, security, coinkite news, help, and coldcard q.
SECURITY ADVISORY ⚠️ check blogpost.
Official COLDCARD subreddit by Coinkite. Help with COLDCARD Q, Mk5 and Mk4; Bitcoin self-custody, air-gapped signing, PSBTs, multisig, NFC, Seed Vault, BIP-85, firmware, and security. Never share a seed phrase, private key, backup, PIN, passphrase, order details, or personal information. Staff will never contact you first or ask for secrets.
Popular Topics in r/coldcard
#1
Coldcard
172 posts
#2
Wallet
54 posts
#3
Crypto
37 posts
#4
Security
28 posts
#5
Seed
21 posts
#6
Q
13 posts
#7
Passphrase
13 posts
#8
Cold Card
13 posts
#9
Sparrow
12 posts
#10
Multisig
12 posts
Flair Used in r/coldcard
#1
Support
: "PSA: Coldcard Mk4 BRICKED by the new emergency firmware hotfix (seed.py crash). Irony at its finest."
40 posts
#2
SECURITY
: "Coinkite is done for - Here is why"
26 posts
#3
Coinkite News
: "Mk3 Security Advisory"
15 posts
#4
HELP
: "What are the best hardware wallet options now?"
11 posts
#5
COLDCARD Q
: "Do you guys still trust Coinkite?"
6 posts
#6
SHOW & TELL
: "Coldcard Hacker discovered mixers and is doing a terrible job"
5 posts
#7
Wall of Love
: "Big ups to this sub, you all saved my stack."
5 posts
#8
Feature request
: "Coinkite next steps"
4 posts
#9
SETUP
: "Dice Roll Users"
4 posts
#10
WALLET SOFTWARE
: "Coldcard MK4 - are wallets generated with 100% dice at risk?"
3 posts
Member Growth in r/coldcard
Yearly
+1k members(27.2%)
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Last updated: September 23, 2026