Can someone explain this 'signed message 6m+' and 'private account key' information to me?
I have an older account that I don't use any more, but don't know how to go about selling it. Thanks in advance
Private key is like the key to accessing a bitcoin address. With it you can sign messages, move funds etc. etc.
A signed message basically proves that you're the original owner of the account and the account isn't hacked or stolen.
I have old messages with links to posts from other accounts I own. Could that work? For example, I could edit a twitter post that I linked to months ago