Just FYI:
Wayback machine is currently deleting ALL archives of 9ch.net after a few days
Right now the QR catalog has only been archived 2 times, on 2 December days. Everything before that is gone.
Same is true for thread archives, but also and especially for files that have been archived.
It seems they wait a few days and then purge all successful archives.
8kun.top archives still exists, I don't know for sure if they delete new ones on there too, but you can't properly archive via 8kun.top, because of DNS poisoning.
Therefore archiving via wayback machine is COMPLETELY POINTLESS.