Bitcoin Cash has implemented two way replay protection so any transactions created with a Bitcoin Cash wallet (e.g. Bitcoin ABC) will be invalid to the Bitcoin network and anything created with a Bitcoin wallet (e.g. Bitcoin Core) will be invalid to the Bitcoin Cash network.
You just mean if any new address is generated after August first or any address generated on a bitcoin wallet at all will be invalid to BCC after August first?
I'm going to be dumping mine asap too, I will gladly be the first one to test the transactions
.Not addresses, but transactions. Let's say you have 1 BTC at address 1Addr.... After the split, you have 1 BTC on the BTC network at address 1Addr... and 1 Bitcoin Cash on the Bitcoin Cash network, also at address 1Addr.... What this means is that if you were to have a transaction that spends 1 Bitcoin Cash to address 1Xyz..., a type of attack known as a replay attack would't be possible. A replay attack is an attack where someone copies your transaction exactly, and uses it on the other network. In this example, if the replay attack was performed (it can't because BCC has features to prevent it), then your 1 BTC on the Bitcoin network would also move to 1Xyz... (BTC address), even though you only intended to send BCC to 1Xyz...