According to
Bpip the account in question was reported and banned after posting malicious link I don't think signing a message would do the user any good if the account is banned and not locked and there no way to verify that the account in question was
According to OP the account was hacked and used to post a malware, so yes signing a message using an old address is a good way of proving if the current person asking the account to be unbanned is the actual owner and not the hacker.
Is there any proof that the said account was really hacked? It's a pretty excuse most of these banned users give after being caught, And, if the password was changed, how did the real owner gain access to the account and discover that it had been banned? I'm not implying that the OP was given a deceptive statement; I'm simply stating facts.
I'm getting a strange vibe about the merits exchange and similar writing style between the Op account and the banned user.
Here you did not give any fact, instead of reading the topic more carefully.
The request to write constructively, and not just write for the sake of the race for merit ... This user was blocked, we are in different cities and are very good friends.
He was banned by a proxy, so he could not write or create a topic on the forum, he asked me to do it. Regarding the exchange of merits, I hope you also have friends who can give you merits, it is normal in society, to give each other gifts.
The fact that the suspicion of alternative accounts begins suggests that the banned Evgenklm account should have created a topic with an appeal on its own.
Nevertheless, without delving into the connection of these accounts, until matches are found that could serve as an accusation, Lafu offered you the most optimal solution.
Since the two accounts are Russian-speaking, the Russian section has a good guide on how to sign a message for an ETH address.
The author of the topic was also banned quite a similar story. He advises on how it was successfully unlocked. You can do the same.
https://bitcointalksearch.org/topic/--5284615Thank you for your advice, it's nice to communicate with experienced and competent users in a constructive way, I will definitely pass this information on to him, have a nice day and great mood.
[moderator's note: consecutive posts merged]