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Yeah, it will be worth a lot I'm sure. But not sure how much it will be worth in Coinbase. I'm still not clear on what happens if they decide not to participate when the rest of the world is participating. Will that create two types of BTC? Maybe a BTC Version 1 and BTC Version 2 (SetWit)? And how is that traded between exchanges?

I don't know enough of that...so I'm simply not keeping any BTC in coinbase. I'm converting them to Steem for now.