Yeah, I think this is the most realistic approach for now. There’s no solved key that contains patterns like aaaa, bbbb, 1111, or other sequences I mentioned above. But even after reducing the keyspace by 80%, it's still huge.
From the last discussion on this forum about finding similar addresses, I still don’t quite understand—it still looks random to me 😅.
Maybe someone here has an idea to reduce it even further?
Yes. Zoom in into the key. It's exactly as you said - it doesn't have a pattern. So it makes sense to exclude all patterns, except the key itself, correct? Let's trim the bastard down. Also, all the solved keys have patterns, you didn't look close enough. But those are exceptions. The 68 key doesn't have any pattern. It might not even exist because of this. Otherwise some Python script should have found it by now, due to all of our ideas so far.