the two bounties are not duplicates, just about the same, but different types, TCC is a token and ETCC is a coin, and if you want to follow the bounty for ETCC, then you must have an address for ETCC, you can find out the wallet info in the ETCC announcement
But Twitter account (and not only him...) one on two bounty campaigns and you can get a double reward for the same action.
Interface justwallet fully copied from the interface myetherwallet and after registration I received the wallet address which is similar to the address of Ethereum, I'm not an expert but I do not understand why all this, why not use myetherwallet?
I would be grateful for clarification. Again, I'm not an expert and this is all my subjective vision of the situation.