Bitcoin is not a property, is not gold (no gold 2.0), is not a national/foreign currency. it is a digital currency, period. If we find a way to teletransport things from a point A to a point B, only politicians will be discussing if the teletransporter shold be consider a train, an airplain or a car. It is just something new that doesn't fit in preexisting categories.
Because then you open yourself to getting audited by the IRS as soon as you barter.
If you can do something to start using promissory notes and implement it into the bitcoin protocol somehow. Obviously, I have no idea how to do this then you open yourself up to the courts.
Historically, promissory notes have acted as a form of privately issued currency. Flying cash or feiqian was a promissory note used during the Tang dynasty (618 – 907). Flying cash was regularly used by Chinese tea merchants, and could be exchanged for hard currency at provincial capitals.[9] According to tradition, in 1325 a promissory note was signed in Milan. There is evidence of promissory notes being issued in 1384 between Genova and Barcelona, although the letters themselves are lost. The same happens for the ones issued in Valencia in 1371 by Bernat de Codinachs for Manuel d'Entença, a merchant from Huesca (then part of the Crown of Aragon), amounting a total of 100 florins.[10] In all these cases, the promissory notes were used as a rudimentary system of paper money, for the amounts issued could not be easily transported in metal coins between the cities involved. Ginaldo Giovanni Battista Strozzi issued an early form of promissory note in Medina del Campo (Spain), against the city of Besançon in 1553.[11] However, there exists notice of promissory notes being in used in Mediterranean commerce well before that date.
Then you have a legal means to start challenging government rulings on the currency in the court system.You don't set something like this up and I'm afraid. It's whatever the hell they say it is this day of the week. Don't you get what I'm saying. You would have a chance in common law court where a jury deliberates a verdict with a third part observent judge. This is in contrast to a system where a judge or officials tell you what the verdict is.