I don't really get what you are trying to point out here.
The dollar's value ...
You mean the fraudulent Federal Resrve Note here, don't you? Why do you have such a problem recognizing it as the worthess piece of shit it is? Does calling it after something that used to have legitimate value (and still does if you recognize it as the silver coin) make you feel better or more "American" or something? That's the danger, getting into WWIII just to protect thevalue of the worthless piece of shit it is. We already fought the Gulf wars to protect the FRN - how many more you willing to do? Nukes?
in other currencies, commodities and Bitcoin varies all the time. You will need a time stamp of the exchange rate at the time of buying Bitcoin and the time of selling bitcoin.
The difference in dollar value will be taxable.
My point exactly! The difference in value between the FRN and the real dollar is a factor of 20. So, go ahead and give them 20 times more taxes than they are legally entitled to and tell me about your mastery of the English language and semantics. I suggest you do some review of basic grammar and math yourself.
You can argue the semantics of the USD and if it has any value at all, but the IRS won't care. If you feel that it is worth arguing, I would suggest that you don't bring it up with them personally, unless they audit you!
Otherwise I think you might find that they suddenly want to audit you, and may not be too interested in your definition of the USDs value!
So it sounds like we agree that the IRS is indeed hiding behind a veil of FUD (Fear, Uncertainty, and Doubt). While i appreciate your encouragement for me to throw myself on the landmine, I'll pass. I would not wait to the point where I am being audited to bring this up with them (if at all). But if they are suddenly inundated with thousands of requests (any attorneys not afraid of the IRS?) to clarify the legal definition of a dollar so we can accurately determine the value of our earnings in LEGAL dollars (and not in worthless, piece of shit, IOU nothing but shit Federal Reserve kiss my ass NOTES) then we can get on with paying our lawfully owed taxes. Succumbing to the the IRS FUD just opens the doors to even more tyranny than we already have.