Hi, citb0in! i think stupid you are, because JavaSandcrawler sad nothing about hashing, only prefs, why he collecting them you don't know.
I've been working on the solution for about two years. this year I found ~2000 prefixes 13zb1hQbW.
13zb1hQbWV 50 pieces.
13zb1hQbWVs 2 pieces.
This is probably very stupid, but ...
Yes, absolutely! That
IS stupid. I don't understand why so many people in here insist and keep trying to find similar strings whose hash value only approximates the target hash value. This is a pure waste of time, nerves and resources as it does not contribute in any way - not even in the slightest - to speeding up or even impairing the solution finding process.
The following two strings demonstrate the avalanche effect. Even if you add the punctuation "." at the end of the sentence and thus changing the string slightly, it'll produce a complete different hash.
This is stupid
f061b6de6d36df2330b1ba15dca3cf858c7e20a2935e453668c6b7124e58d80b
This is stupid.
dbf61110bee7b482f8b5536d4996effaae1de69fcd5e132c0d3af1ebf7146b3d
Imagine you find the string of the hash f061b6de6d36df2330b1ba15dca3cf858c7e20a2935e453668c6b7124e58d80b
f061b6de6d36df2330b1ba15dca3cf858c7e20a2935e453668c6b7124e58d80
cnever ever it will be similar to the real string "This is stupid". The string for this hash could be "something completely different in ch4rs and s!ze"
Please stop looking for prefixes, suffixes or parts of hashes because it's a waste of time. Instead, invest your strength and energy and read about the
avalanche effect.
There were a lot of ideas, and a lot of wasted time. I also tortured the IBM quantum machine and got some research results.
So true ...
But I still haven’t solved 66.
puzzled? no, huh?
Also please forgive me, I am using a translator.
anyone's welcome here despite of their origin and native language. Have fun and enjoy and last but not least ... Good luck!

Cheers