Maybe this has been discussed a long time ago. I was able to build such a structure using my software knowledge. My target is only lost wallets.
There is no such thing as a lost wallet. If you have a gold bar stored somewhere around your house that you have not touched for 10 years, does that mean it is "lost" and I can come to your home and steal it?
Apart from "software knowledge" you also need basic understanding of math. 2
256 is big enough that makes searching it to "getting lucky" impossible.