Is it real?
Yes, spellchecking is real. ... In some parts of this planet at least.
An so spead 48-50Mkeys/sec!
For that matter already, the LBS also does not find everything, but only from the list given to him. And how much is there given to him? 100K addresses? 200? 300?
I thought I mentioned beyond reasonable doubt: 16M addresses - those that have at least 1 Satoshi on them.
Well, well, you can even specify a couple of millions through the bloom filter. But there are currently about 400 million known addresses!
And to check every address on the block, even if your ABD is raised, then the speed will be completely different, much less.
Last time I checked there were 270M known addresses, but maybe that is bigger now. So?
People usually don't want to search for empty addresses. For the topic of finding collisions, it would actually be preferable to look up all of them (and an instant speedup factor of ~20) and these proposals have been made. Maybe in the next version of LBC.
I don't know what ABD is, sorry.