in localbitcoins we have address to receive bitcoins.

In Coinbase we can create multiple addresses for bitcoin.

Now which one do I use to receive and which one to transact and sell/trade?

because the address in localbitcoins is shown as invalid at some free bitcoin generation sites/ while the coinbase addresses work

closed as unclear what you're asking by Stéphane Gimenez, Murch, dchapes, Nick ODell, John T Feb 3 '14 at 7:38

Please clarify your specific problem or add additional details to highlight exactly what you need. As it's currently written, it’s hard to tell exactly what you're asking. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.

Browse other questions tagged or ask your own question.