Vendor log monitor

Every day we check Google's public software logs, and a few others, to make sure nothing in them was rewritten or quietly left out. Last run 2026-10-14 16:35 UTC. Signed results: statements.json.

Logs

LogEntriesSince our last checkLast new entryWitness signaturesCopies seen elsewhere
Pixel factory images
developers.google.com/android/binary_transparency/0
1,192no change7 days ago015 (9 at this size)
Google system APKs (pre-March)
developers.google.com/android/binary_transparency/google1p/0
134no change198 days ago015 (14 at this size)
Google system APKs
gstatic.com/android/binary_transparency/google1p/jwt/0
263no change2 days ago0—
Google APKs, 2026/01 shard
gstatic.com/android/binary_transparency/google1p/apk/2026/0
1,797,152no change34 days ago0—
Google APKs, 2026/02 shard
android.transparency.goog/google1p/apk/2026/1
639,367grew, history intact 604,352 → 639,367today5—
Mainline modules, 2026/01 shard
gstatic.com/android/binary_transparency/mainline/modules/2026/0
818no change49 days ago0—
Mainline modules, 2026/02 shard
android.transparency.goog/mainline/modules/2026/1
418no changetoday5—
log.frem.sh
log.frem.sh
15,879grew, history intact 15,142 → 15,879today1—
notbefore.net
notbefore.net/log
1,244grew, can't fully check 1,198 → 1,244no date served1—

History intact: the log proved today's version starts with exactly what we saw last time. Can't fully check: the log doesn't publish the data that proof needs, so we can only catch it shrinking or showing two different versions at the same size.

Does everyone see the same log?

LogCopies collectedAt the newest sizeTwo versions at one sizeCopies that don't line up
developers.google.com/android/binary_transparency/015900
developers.google.com/android/binary_transparency/google1p/0151400
go.sum database tree16700
tlog.andxor.it15100
log2025-1.rekor.sigstore.dev1100
transparency.dev/armored-witness/firmware_transparency/prod/1151400
Armory Drive Prod 2151500

We collect copies of each log's state from the transparency.dev distributor and witness.gdbsecurity.com. Two different versions at the same size would mean someone is being shown a fake.

Certificate Transparency logs: all 71 that publish their data as tiles match what we rebuild from that data.

Is everything there?

Open problems