Hi there, I tried to withdraw my BTC from coinexchange.io to another wallet. I copied and pasted the wallet address to this field and I think there was a blank character space after the wallet address and coinexchange may have taken this to be a character?! The transaction says completed, does this mean I have lost my BTC or can i get it returned? Surely no I.D is attached to the wallet address. I have not received anything in my wallet. Thanks
Without knowing coinexchange, I don't think that they accepted an invalid address. What most services do is running the address through a trim() command, which eliminates blank spaces at the beginning and end of a string.
After that, the addresses are very likely checked for validity, so you should have received an error if your address wasn't accepted.