I just have written in here because i changed the address in my profile.
And i also have written why i changed my Bitcoin address, and it was changed because Hhampuz was asking about it.
Not more not less and if you want you can write Hhampuz a pm and ask.
There is no pk for the old and for the new address because its a Bitcoin address from Bitstamp if you exactly wanted to know.
I dont use or write my private Bitcoin address anywhere because of security reasons.
It is okay as the purpose of changing the wallet is to change the wallet of the signature campaign and there is nothing wrong with it. Staking the wallet serves the purpose you also could just send the wallet to Hhampuz directly. But I think you should create a bitcoin wallet and save the private key of that wallet and stake that bitcoin wallet so that if there is anything wrong eg: a lost/hacked account or something like that then you would be able to proof your ownership. But if you have no private key then you would not be able to proof ownership as a result there will have almost no chance to re-cover your account.