From reading previous articles I understand that you can receive bitcoins to an address even if your wallet is in cold storage because the bitcoins sent to this address is recorded by someone on the block chain. Is this correct? and who is this someone?
Now If I have bitcoins stored in an offline laptop (I believe this is called cold storage) is it possible I can create some sort of QR code with my offline laptop and just have my mobile Android bitcoin wallet snap the QR code and wallah the bitcoins are transferred from cold storage to hot? Do I also need to enter my private key to enable this?