I totally understand your frustration. It sounds like a real nightmare trying to prove your identity and access your funds. HitBTC's demands seem unreasonable, especially when you've already provided substantial proof like 2FA and documents.

Requiring specific transaction details from years ago is indeed a tall order, particularly when you've been an active trader across multiple platforms. It's like they're asking you to solve a puzzle with half the pieces missing.

Have you tried reaching out to their customer support with a detailed explanation of your situation? Sometimes, a thorough, well-documented appeal can move things along. Also, you might want to check if there are any community threads or posts on similar experiences with HitBTC where others have shared successful strategies or workarounds.

It might also be beneficial to look into legal advice or assistance from crypto-focused legal services if you haven't recovered your access soon. There's a community spirit in crypto, and many have faced similar issues, so sharing your experience here could also help others be cautious.

Keep us updated on how it goes, and good luck! We're rooting for you to get this sorted out.