That's why our Bitcointalk Show's handle is @btctalkshow. The original was already taken by this 2014 project. [...]
I have a solution... and I've already managed to get the desired username this way
[This is just an example, but I hope it helps] 
- Fill in the form - https://help.twitter.com/forms/trademark
- Fill in all free fields ….
- The text of the message is presented below

I run a non-profit channel youtube.com/c/BitcoinTalkShow/ that represents the public interest, as evidenced by the lack of tweet protection (username @btctalkshow). The @BitcoinTalkShow profile uses my handle, but the account owner can't be contacted due to long period of inactivity (last tweeted Feb 5, 2014). In accordance with Twitter's Inactive Accounts Policy and that the account has been inactive for more than 6 years, I would like to ask you to consider deleting @BitcoinTalkShow. In this case, I would like to take this username to represent the youtube.com/c/BitcoinTalkShow brand on the Twitter platform.
I am using the email address of the official domain as the verified email address for the @btctalkshow account and currently have access to that email (here it would be nice to have an email BitcoinTalkShow@'bitcointalk.org). Youtube.com/c/BitcoinTalkShow/ contains contact information and links to Twitter, Facebook and Discord accounts. These accounts are linked to the same YouTube channel added to my twitter/@btctalkshow bio. Let me know if you need more information.