No you haven't. Where? How? People have posted bounties for anyone able to show demonstrable proof that they've successfully had Tether exchange their USDT for

No you haven't. Where? How? People have posted bounties for anyone able to show demonstrable proof that they've successfully had Tether exchange their USDT for USD. No-one has claimed them. Last I saw, two things, 1) Tether's TOC said they had no obligation to redeem, and 2) in the hypothetical event you wished to, it was an onerous situation requiring holdings of six digits, being non-US, and requiring "90-180 days" of processing time.