SIgned messag OK but you have to say how i have to do that.
Do you use blockchain.info ? Here the "how-to" for sign a message with a bitcoin address : https://bitcointalksearch.org/topic/m.1879587
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 :
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.
This address of yours is something within your post history. You need to find some old post with it show it to the buyer and then send him a 0.000001 transaction with your sign to prove that you were indeed the owner of this account. You understand now?