Check out Kraken adoption of XBT and what is xbt guide and how it has managed to has change the market on their official website. As we have mentioned earlier ISO has a huge impact in determining the naming and influence of a ticker. Some ticker icons that are not aligned to a specific country assume the emblem X, for example XAU for gold and XPT when you are referring to platinum. However, X is not only used in those lines because they can be used when referring to Ripple as XRP and XLM for Lumen. So keep it on check that X works as an identity for currencies that have no country code.