What changed, and why it matters
This commit only updates a release signature file. It adds two new official firmware file hashes for COLDCARD Mk devices and refreshes the PGP signature covering the file. There are no code changes, no bug fixes, and no security-relevant behavior changes in the firmware itself.
No action required; this is a routine release signing artifact update. Verify the new hashes against published release assets if performing supply-chain validation.
Security signals we found
No strong security signals were identified.
Evidence from the diff
The diff modifies releases/signatures.txt, appending SHA-256 hashes for two new Mk firmware binaries (v5.6.1-mk-coldcard.dfu and v5.6.1-mk-coldcard-factory.dfu) and updating the detached PGP signature block. No source code, build scripts, cryptographic routines, or configuration logic are changed.
Changed components
releases/signatures.txtInspect captured patch +10 / −8
### releases/signatures.txt
@@ -9,6 +9,8 @@ de6e4d9ea237300cebe7d83510507c76feb2633a39ff22771b5bd64226399f75 History-Mk4.md
a8b437624c9ac551b3be2161879a697bfc606ced856926a37e21fefeed8f570c History-Mk3.md
de6e4d9ea237300cebe7d83510507c76feb2633a39ff22771b5bd64226399f75 History-Mk.md
854ba833ca061ab31c545b2886e9822a7b4ec7f0bdbfffcc24b86435e0a7d105 ChangeLog.md
+dc0edc4ac90570b615e790d32dcd68069ed1f61e61f69a1573a5eb888fb9dd0c 2026-08-20T1336-v5.6.1-mk-coldcard.dfu
+e5ff683d4dba7ce9d14ca1fd8ae214efcd426365adbed52ed79fd291dfe4bb74 2026-08-20T1336-v5.6.1-mk-coldcard-factory.dfu
082bf50a453b2b9f23ef439261cafafa646f944e1c9f725d2584a75598cde9c2 2026-08-20T1335-v1.5.1Q-q1-coldcard.dfu
71507052094e4e8dd14df93167858a7a0b41e2986ef63dd75f84b682cb46fb46 2026-08-20T1335-v1.5.1Q-q1-coldcard-factory.dfu
7926e52df838f643bb201a5e4be52a3644c0ed78f1708c1ac231a224eaf34a12 2026-07-31T1608-v6.6.0X-mk-coldcard.dfu
@@ -142,12 +144,12 @@ f05bc8dfed047c0c0abe5ed60621d2d14899b10717221c4af0942d96a1754f33 2021-03-29T192
bea27f263b524a66b3ed0a58c16805e98be0d7c3db20c2f7aab3238f2c6a6995 2019-12-19T1623-v3.0.6-coldcard.dfu
-----BEGIN PGP SIGNATURE-----
-iQEzBAEBCAAdFiEERYl3mt/BTzMnU06oo6MbrVoqWxAFAmqHAqMACgkQo6MbrVoq
-WxC8lAgAlIQttlG1I1qjgFv4iQMihbYFi9l/vWg7oC5IaK/jErxpQ2tDA7y93QNq
-2j/Dfe+/evLSYVOftTQlpUu3f9V2j7f8boQM04Mfm+vx6kvMJ/P0TdfcrW/svi12
-EQpBC+iYXrvImheCQcqJ4lqeGhRgpzg4scinfWoaR9HW0QWFt3QZ/kn2S/lKyt7f
-Hv0oRcIaQUc0/h1OtKak8zN+YCWoxZ5mhr+dlVzpk+N/yziUtk8GIWSAbJq7004I
-/zpvpHPDggdGN0DrMIf0KA2EFsoBmfpikdy+eGrtw7WUQrut2GkPjklsW9SatAtt
-zrMLdl/nlNqjLGvA5GUllAxUI3ov2A==
-=7eBF
+iQEzBAEBCAAdFiEERYl3mt/BTzMnU06oo6MbrVoqWxAFAmqHAvkACgkQo6MbrVoq
+WxD4+wf+JqntNMNNSqMFfhRPKH6fhENBncN9WAlT+UubrhJuuj3Zc6UMgnsaoY7w
+PSKFxrFsy4RkGdgUngEJd3HGMt3KKphhD9/22LXQjXSKD5ZBIjCxPO+AFLdznkIY
+Xz0kG7F5dazc8+Iypt1qQkWgM0ZaKMnuYqFuKcOoPkJg9O2173HKaImnPugSXm8N
+431XYg0UhepAdGVHqjNT604NuNxPyAHtfCZziRInKrXfjf98UOgglgxvVWCJlOw1
+zUTGDphWXxdfeWECSletUCK/0wqlt98vHj83+4H4cxEMI1m1movLpctLfVURQJ7+
+dvtrcXVMfw3dskr1c49vTE4CG4WK2A==
+=ZWGS
-----END PGP SIGNATURE-----Why this scored 15/100
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