Yeah. alex0jsan stands for alex-ojisan, which means uncle alex. It's all deliberate.
On an older intel laptop with igpu, a 5 character prefix takes < 30 seconds using noclvag. I did several runs. Using rana, it took around 5 minutes for one run and around 30 minutes for another.
this is very impressive sn0wden has 8 letters and it took a long time
im very surprised you got rana working so fast, your "old" laptop much OG π
in any case, welcome to nostr, I'm definitely going to learn and explore what you've done -- thanks for the contribution