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 
, but here no one have this for work of months to days
, but here no one have this for work of months to days I've been puzzling over your way of reducing the number of keys to 16/260 and 1/720 for two weeks now)))
You write that for 1 key of 115 bits it takes 7 days for 3090. How much time does it take to compress to 260 and 720 keys?
Thank you