I found the 2 initials characters that will reduce dificulty to 256/64
This is utter bullshit.
I see this as just a more inventive attempt to scam.
That's very obvious indeed.
not its not, -F compressed -k -Z 000000000000000000000000000000000000000000000003x000000000000000 -l $((256-65)) 13zb1hQbWVsc
first is a 3 the second I wont teach, based on evidence