What the developer wrote
Authored by scgbckbone
bump ccc_min_block
What changed, and why it matters
This commit simply updates a date-based block-height threshold in the COLDCARD firmware from a November 2025 value to a March 2026 value. It appears to be a routine scheduling change for a feature tied to a specific Bitcoin block height, not a security fix in itself. There is no evidence in the commit of a vulnerability being patched.
No immediate security action required. Review the feature documentation for 'ccc' to confirm the block-height schedule is intentional and consistent with product plans. Treat as a routine maintenance commit unless additional context emerges.
Security signals we found
No security-relevant code change: single constant update only
No mention of vulnerability, CVE, bug, or security issue in commit message or diff
Change is forward-dated, suggesting feature scheduling rather than incident response
Evidence from the diff
The change modifies ccc_min_block in shared/chains.py for BitcoinMain from block 922061 (commented as Nov 3/2025) to block 939464 (commented as Mar 5/2026). This is a one-line constant bump. The acronym ‘ccc’ likely refers to a COLDCARD-specific feature with a time-gated activation or deprecation. The commit contains no logic changes, no bounds checks, no cryptographic changes, and no explanation of security relevance.
Changed components
shared/chains.pyBitcoinMain chain configurationccc_min_block activation thresholdInspect captured patch +1 / −1
diff --git a/shared/chains.py b/shared/chains.py
index ac4ea67..1a9a7e8 100644
--- a/shared/chains.py
+++ b/shared/chains.py
@@ -313,7 +313,7 @@ class BitcoinMain(ChainsBase):
# see <https://github.com/bitcoin/bitcoin/blob/master/src/chainparams.cpp#L140>
ctype = 'BTC'
name = 'Bitcoin Mainnet'
- ccc_min_block = 922061 # Nov 3/2025
+ ccc_min_block = 939464 # Mar 5/2026
slip132 = {
AF_CLASSIC: Slip132Version(0x0488B21E, 0x0488ADE4, 'x'),
Why this scored 19/100
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