Oops! I knew that sooner or later I'd embarrass myself by relying on an LLM and not checking, and it looks like the promise on US notes disappeared back when the currency went off the gold standard. Unless I've got it wrong again, in which case, I'll just stop digging.
Will the promise on dollar bills be, I promise to pay the bearer the sum of 0.00001012 BTC?
Oops! I knew that sooner or later I'd embarrass myself by relying on an LLM and not checking, and it looks like the promise on US notes disappeared back when the currency went off the gold standard. Unless I've got it wrong again, in which case, I'll just stop digging.