not bruteforce generating and comparing
totally offline no public database needed
there's no other way to do that, and you can do it offline
finding/generating specific public address can only be done
by randomly generating private key and checking the corresponding public address
i am looking for some codes that only use a specific characters not all base58 ?
by adding the -r regex (regular expression) option to the vanitygen
you can set it to find addresses contain only those 22 alphabets
I'm not sure this right but for example, regex ^1crof[0-9].*$
it will find addresses that start with 1crof and followed only by numbers