Legal tender, properly defined, means that someone you're in debt to must accept it as means of payment to discharge the debt. Afaik Japanese lenders can still

Legal tender, properly defined, means that someone you're in debt to must accept it as means of payment to discharge the debt. Afaik Japanese lenders can still insist on Yen, and almost invariably do I suspect this will be the same (in practice if not in theory). You can pay people in Bitcoin, or if they don't actually want Bitcoin the president's buddy is hyping an app that will let them get USD instead when you send your satoshis...