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IRS & FinCEN have already declared it money. Treat it like CAD or EUR or GBP and you'll be fine. Same with Steem & SBD.

FYI the Judge didn't rule on it's legitimacy as money, he ruled that the statute under which he was charged left the definition too vague and broad as to be enforceable. Basically he's saying if Bitcoin is money than so is just about anything else. The bigger news is the judge tossed out a whole lot of Florida's ability to fight money laundering over this. Now it's pretty much all on the feds.
He essentially just castrated the Florida equivalent of the FBI over this.

Le Bitcoin n'est pas considéré comme une monnaie dans la législation actuelle. C'est une bonne nouvelle car cela prouve que l'état et la justice considère que ça n'appartient pas à l'état. ;)