What changed, and why it matters
This commit only updates the release signature file (signatures.txt) for the COLDCARD Mk4 hardware wallet. It adds SHA-256 hashes for two new firmware files (normal and factory versions of v5.4.4) and refreshes the PGP signature that covers the file. There are no code changes, no bug fixes, and no security-relevant behavior changes in this commit.
No action required. Treat as a routine release signature update. Verify the new PGP signature and hashes through normal supply-chain assurance processes if consuming this release.
Security signals we found
No strong security signals were identified.
Evidence from the diff
The diff is limited to releases/signatures.txt. It appends two new DFU file hashes (2025-09-25T1503-v5.4.4-mk4-coldcard.dfu and the -factory variant) and re-signs the file with an updated OpenPGP detached signature. No source files, build scripts, or cryptographic logic were modified. The change is a routine release-artifact attestation update.
Changed components
releases/signatures.txtInspect captured patch +10 / −8
diff --git a/releases/signatures.txt b/releases/signatures.txt
index cbdd45a..6c98a6b 100644
--- a/releases/signatures.txt
+++ b/releases/signatures.txt
@@ -7,6 +7,8 @@ Hash: SHA256
13569699323108af074af0e9ea478f75d1795ac5f5ebcbd0b988d9db63e86a5d History-Mk4.md
c8ad43b4e3f9d77777026da6d1210c6fc5cfe435bcfcd241c0f67c9392ad7b82 History-Mk3.md
0d7b959813b17adb114a9813bf144a7ab955045084e92c72b708bdccbe7e7619 ChangeLog.md
+a759263bb8b209823a4be0b5022b5943b2a0bddb2059f36bd3ceeaddc3796ee3 2025-09-25T1503-v5.4.4-mk4-coldcard.dfu
+f9e8d697546049a410251bb0861547e7078a8d08eda74037a36a7a95df39ad81 2025-09-25T1503-v5.4.4-mk4-coldcard-factory.dfu
9c42596370df0ad86b7b8bcf9b11b7360212ff6a8082b7fc1f7c0437d98c7c11 2025-09-25T1501-v1.3.4Q-q1-coldcard.dfu
c3508d4cb74e9cc2384e33fad5d4e1e0a955c6c4166220f76cf1b347c15ad55d 2025-09-25T1501-v1.3.4Q-q1-coldcard-factory.dfu
be166b3bb3ec2259991db998c20c3d44e88eeaa73c2b8114f31cb14cab5e66e6 2025-05-14T1344-v5.4.3-mk4-coldcard.dfu
@@ -111,12 +113,12 @@ f05bc8dfed047c0c0abe5ed60621d2d14899b10717221c4af0942d96a1754f33 2021-03-29T192
bea27f263b524a66b3ed0a58c16805e98be0d7c3db20c2f7aab3238f2c6a6995 2019-12-19T1623-v3.0.6-coldcard.dfu
-----BEGIN PGP SIGNATURE-----
-iQEzBAEBCAAdFiEERYl3mt/BTzMnU06oo6MbrVoqWxAFAmjVWWQACgkQo6MbrVoq
-WxDSVgf7B3sDq/uBWHOEiJhRWYQfD+5ULk4O1/5f2ixbaBnPaSNT0pmaZw3NyzmA
-YcJrSu581RG22xSBgPKPEezOtNKtZtXvVg2/AKI4ABKIjctGamPQYs4+pDxRPGyJ
-8qH8Cz65kNT5oVNr4deZcW/ncERsoW166RyP4t1eOXCzrq1ih62euqwDnntD+6l9
-0orjd+XaFLq1eV8CRFHuWXiNPVty1u7IkQnZrmgV6jLEE5t/fzzNTh4GrxtuHG6P
-2bfCmg5VtvcksBTN6QvisUbBOr9aF0FryZUJgErAIIyAHfLbn7beS1m6yUy39Cdz
-fSgcCo7c/7R/VjkYBaKK9bx+ep8k7A==
-=uiBh
+iQEzBAEBCAAdFiEERYl3mt/BTzMnU06oo6MbrVoqWxAFAmjVWboACgkQo6MbrVoq
+WxD5Uwf/XMEl3ZdW2tRIa5zKH41HV8mg6JYTNIYyA3zxUj6MQzy0KElyhzZQrDwx
+FLrIsopz9U9eqd7zllf3qSrEvw8SZYyVdEN1hguAXuIjUfufW66A/6mTuvPHdaG6
+6mF6Rr8dgeEsWtc2Y0358vzGQS8sWXvjUqjyAs8idZiBIDnJW2s17HVBNTz9TuBR
+w/8M6jh6mjjNd0mv5P3FsWXVLmXxGXI0WV54Ql7J6lRFG4v9TZwwqMsoRJV2Tik3
+sDOT8+RN1RtpI+IIec/PmUoJ7uzmtwAtQRuzQ01cYfB3gYfk7vd13UyiCAx4TaMw
+4ci3nHZCeiC3/h2On2pkc60A4f02Mg==
+=iywN
-----END PGP SIGNATURE-----
Why this scored 15/100
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