2025-12-04
On this date, while performing production pipeline expansion, we inadvertently
published a test package to the production
transparency log (index 39, with the entire entry cited below).
While this was a process error (which has since been patched), it provided an
unintentional but valuable audit of the log's immutability.
No entries in Android Binary Transparency logs can be rewritten — even to
correct honest mistakes.
Index 39 will remain in the log permanently, serving as a "canary in the coal
mine" that proves our append-only architecture functions exactly as promised.
39
3a1fbc455a2c9ad4930dd266f44ae7f7009a294ec1ad4dfe5c3e3af591fd60c4
SHA256(APK)
com.google.android.apps.internal.release.buster
496557
Note that this APK was not meant to be released to the public and to the best of our knowledge, was never released to the public.