I know what ecash is, thx 😉 When the miner does work (submits shares), the pool/mint credits him with eHash tokens in his book. They remain in the pool's book (custody), until the miner withdraws them; that can be once a day, once an hour, whatever. My question was/is, how would the miner be able to trade this eHash token *when it is still in custody with this pool*?? He has nothing in hand, other than a promise (which he can't even prove). Who would trade for this?? They would trade for an IOU (from the miner) of an IOU (from the pool)