I'm using llravx with app file. After hundreds of tasks done and not a single one invalid, all my tasks keep being double checked. If I remember, not long ago, when not using app_file, the host would be considered trustworthy after a few dozen valid consecutive tasks and would then start getting work with "initial replication 1".
Getting doublechecked does not bother me (besides the increasing amount of pending credit...), but it implies some waste of crunching power. Work that, otherwise, would be run only once is being run twice, at least.
Not trusting "anonymous platform" is intended?