Tecmobile/ECB - thanks for the quick replies, I guess this means if I have unspent output X on main BTC branch, and I create transaction Y (BCC) using output x and also another transaction Z (BTC) using also unspent X, that I have effectively spent output x on both branches?
If you use something like the blockchain wallet you will send BTC but if you used electron cash for example you will send BCH
If you had 1 BTC before the fork and use electron cash to send 0.5 you will now have 1BTC and 0.5 BCH
If you had 1 BTC before the fork and use blockchain wallet to send 0.5 you will have 0.5BTC and 1BCH
Can someone not create 2 separate transactions, one from electron cash and one from blockchain wallet, that use the same unspent output (UXO),therefore kind of double spending the unspent output. Seems to me this is perfectly possible, and that both the BCC network and the BTC network will consider the transaction as valid.