you say we could calculate a specific search space when we know the pub key from these addresses.
but why are the BTC still there ?
is it also impossible with the specific search space ?
We can't "calculate" a specific search space, we need to know the specific search space before starting the computation. That's the reason why those btc are still there, because nobody (except the btc owner) knows the specific search space for those private keys.
OK so the possibility that the addresses are in the 250 - 256 space is high.
When we take one of these space and make this with the baby step giant step?
Or do I understand something really wrong?