Bitcoin CANNOT be legal tender because is property, is credit, not debt.

What is "legal tender" ?
A “tender” is the name given to a small boat that “tends” to the needs of a larger ship, usually by transporting people or supplies from shore or another ship.
With the word legal referring to a contract, the term “legal tender” means to “tend” to a debt sometime in the future, by way of contract.
Meaning, by using legal tender the debt is never paid, as the “small boat” never left the “shore” to deliver the “money”.

And govs cannot use Bitcoin, not as money, not as reserves.
https://i.postimg.cc/XqjKHdcp/Darth-sovereign-logo.gif