So generating just an address and a key on paper will be enough for someone to go to an exchange and start to trade in those two currencies right ? No large "chain" needs to be downloaded, correct me if i'm wrong.
What do you mean?
If you have an address, you can send and use it to receive coins.
But you don't know if the transactions are processing or not without downloading/accessing the blockchain
Thanks for reply! wow. instant.
Er....what i mean is when i looked at some of the alt currencies sites they seemed to want me to download something substantial probably like you say the block chain. But at this stage all i want to do is generate some addresses and keys for currencies safely off line. After that i don't mind dowloading blockchain if that's needed to check transactions. I guess i'm taking it one step at a time at the moment focusing on creating some addresses. Is it possible for now just to create alt currency addresses and later to download the chains when required ?
J