I always thought futures contracts were settled in cash rather than the underlying asset--in fact, I'm almost certain that's the case with typical commodities.
I think I have explained in my
futures thread I have already linked above: BAKKT futures are a first in bitcoin futures because they settle physically.
Contrary to what you said, usually commodity futures settle physical: the infamous negative spike in oil futures a few months ago was also due to the fact that the "tanks'' in Cushing OK, where the futures has to be delivered, were already almost full, so there was no way to do de delivery. Coffee, copper and other commodities have their own physically settled futures.
Of course in the realm of cryptos the delivery itself has a novelty to be managed, so this is why BAKKT futures are so important.
Regarding the "bitcoin exchanging hands", I might have misunderstood. Anyway when dealing with futures, bitcoin exchanges only at the expiration of the future, with the final settlement of the Open Interest.
I think it is natural this thread was bumped again after BAKKT broke twice in two days his ATH on Traded volume:
Tuesday's Bakkt Bitcoin Monthly Futures:
Chart with upwards trend Traded contracts: 12214 ($137.83 million, +42%) (New ATH Rocket)
Rocket All time high: 12214 (7/28/2020)
Money bag Open interest: $14.43 million (+83%)
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