COLDCARD RNG incident the public record, collected and explained
Informational only, and this site never asks for your seed words. details

Informational only. This is an open source collection of what others have published about the incident, together with an explanation of it. It is not financial, security or legal advice, and not a substitute for professional advice about your own situation. It is not affiliated with, endorsed by, or speaking for Coinkite. Material is attributed and quoted as published; where sources disagree their scenarios are kept separate with their assumptions rather than reconciled into one answer. Everything is meant to be checked against the linked evidence rather than taken on trust. Act on your own judgement about a particular situation. Editorial standards and corrections.

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COLDCARD firmware changelog

cc-changelog

https://raw.githubusercontent.com/Coldcard/firmware/master/releases/ChangeLog.md

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continuously updated
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  1. Earliest copy held Current
    seen · Captured here 878 chars
    Extracted text as captured 
    # Change Log
This lists the changes in the most recent firmware, for each hardware platform.
## 2026-07-31 Hotfix Versions: 5.6.0 (Mk4, MK5) and 1.5.0Q (Q1) and 4.2.0 (Mk3)
**Urgent hotfix to correct a limited entropy bug**
Please regenerate seeds only with this new version of the firmware and any
later updates from today onwards.
**Mk3 users must regenerate any seeds** made on earlier versions
as their entropy is critically low at just ~40 bits.
On **Mk4, Mk5 and Q entropy** may be as low as ~72 bits. This is
well below our target of 128 bits.
Follow the steps listed in
[our blog announcement](https://blog.coinkite.com/coldcard-mk3-seed-generation-warning/)
to be safe, and please be careful not to cut corners or rush this process.
# Release History
- [`History-Q.md`](History-Q.md)
- [`History-Mk.md` (Mk4 and Mk5)](History-Mk.md)
- [`History-Mk3.md`](History-Mk3.md)
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