So if BCA gets listed on an exchange now, will the holders of BTC (back dated to the snap shot) on that exchange suddenly find themselves with the same amount of BCA or has that time period past? If so who controls all the un claimed BCA which must be a huge amount, or are they lost forever as not claimed??
if the exchange didn't make a snapshot at the time of the fork, I don't think they would be capable of saying who to grant with what amount of BCA. So the answer is probably no