Absolutely do not do this. Do not bet against the house inside casino walls.

If you have enough capital to weather potential dislocations, the only real way to play this is to be long off shore (perps, probably) and short CME. This position is long BTC/USDT vs short BTC/USD, the net of which is short USDT/USD. The reason for doing it this way is if it doesn’t play out, or goes to 100k first, you’re just wearing a bit of spread and funding risk, but let’s call it delta neutral. OTOH, if Tether nukes, crypto will explode in Tether terms (since it’s worthless) and implode in USD terms. Now, you won’t actually get paid on your offshore long because the house is bust, so you’ll have a paper cut there (keep as little margin as possible). But your CME short will pay you nice, hard, centrally cleared greenbacks.