Is llx_blockedlog the immutable log?

I am changing my email address. To verify that I get it changed everywhere I take the backup and grep for my old email in that file. I found 1 entry that I think might be the immutable log is that correct?

INSERT INTO llx_blockedlog (rowid, entity, date_creation, tms, action, …

Is llx_blockedlog the immutable log?