btw i can offer 115bit range only 1 key, for make this key i need 0.75btc for buying 3090rtx gpu's for my calc fast to within 7 days Smiley, but here no one have this for work of months to days Smiley
For me, to even consider it, I'd have to know your method/how you cut it to 115 with only 1 key. I don't doubt you can, just never seen it.
Best I did once was to cut it down to 108 bit, with 1 out of 2048 keys being in the range.
And couldn't do it for less than .50 btc
if 115 could be only 1 key, then is there any delay for 40bit for 1 key ?

and do you think july 2021 status at blockchain for 120 puzzle is solved and transfered

Yeah I don't know riddler.
I know you think outside the box, and I like that.
I was messing with division and addition today and there were some keys that I could not find after reducing. Kinda scary. I was using BSGS to search for them (all were 52 bit and less.)
If you can get it down to one key, down to a 40 bit, then the btc will be yours soon!
I got it down to 104 bits today, but with 32,000 pubkeys; better than the normal 2^16 normally required, but I can't figure out a way to shrink it down to one key...