Do the admins accept signed ETH messages as proof of ownership of BT accounts? I think they only accept signed BTC messages, anyone knows?
No, because they only accept bitcoin signed messages. This thread isn't made for that reason like a proof of ownership on lost bitcointalk accounts but it's a proof of ownership of your ERC20 wallet address. I just want to defend this thread of mine about signing of message.
You made a great guide, but it does not relate to account recovery procedure in the forum. I still don't know the purpose of secure, and prove ownership of Ethereum address in the forum, if you simply want to prove it for use cases outside the forum space.
Anyway, I thank you for this great guide for community.