Moderation log
Every action, with who took it and why. Published by default rather than on request. There is no shadow moderation here and no secret action, and because the log is append-only, it is provable that nothing was quietly removed.
No moderation actions have been taken.
This log has existed since the board opened. An empty moderation log on a busy
board would be suspicious; on a new one it is simply true.
Tombstoning hides a post's body from display. Its leaf stays in the tree and still verifies: removing it would invalidate every checkpoint published before, including ones other people hold. See the rules.