What do you mean with : "do you use blockchain.info"?
He means what bitcoin wallet are you using. That's to help you on signing a message. You'll also need to have posted a BTC address from the account you're selling.
No, it's not blockchain.info that i use.
If you are interested in the account you can always bid in PM or here.
Can I ask you which wallet are you using for store the address? So we can help you to sign a message, but this is strange because you are saying :
SIgned messag OK but you have to say how i have to do that.
but you don't know how to sign a message from a known/public address that the real owner (
you) have posted in this forum.
First i didn't know how you had to make a signed message until i read the explanation in one of the posts here above;
I think i understand now how you have to do that. However i don't understand why this is?
My BTC wallet is on my PC.
In fact, i'm not an expert in all these things, but found a lot of help on this forum.