I guess you mean the t0.com chain, I do agree it's not the common case where you can transfer btc in and out of the sidechain. Would it be considered a complet

I guess you mean the t0.com chain, I do agree it's not the common case where you can transfer btc in and out of the sidechain. Would it be considered a completely separate chain, since it needs to publish the timestamped hashes on the bitcoin blockchain ? (Or any other, sure, but right now bitcoin is the one with the widest adoption)