I tried to sign my wallet using block chain instructions, man I tried all ways... cannot fathom it out.
Is a step by step guide available, anywhere?
I'm interested too, because i use blockchain.
Sure here is my guide:
Login to your blockchain.info wallet. Go to the 'receive' tab, you'll see a list of all your addresses (if the address you need to sign with is in the archive tab then please unarchive it). Then click the actions button to the right of one of the address lines. Select 'sign message'. Then copy the address, message and signature when you need to prove that you control that address.