DESIGNATION
To shorten, the abbreviation BTC is often used instead of the word "Bitcoin." This notation resembles currency codes; however, such a code has not been assigned by the international standard ISO 4217. On October 7, 2014, the Bitcoin Foundation published plans to achieve standardization of the code for bitcoins. The BTC notation contradicts the accepted system in the standard — to designate "global commodities" starting with X (for example, gold has the code XAU). The option XBT is being considered as a candidate.
When specifying BTC or XBT, it refers to the unit of account, not the network, set of algorithms, or any other entity related to them. The Bitcoin sign has been approved for inclusion in the planned Unicode standard version 9.0, and it has been assigned the number U+20BF[5]. Sometimes the symbol ฿ — the Thai baht sign — is used, but it is not compatible with all encodings and fonts. The URI scheme "bitcoin:" is officially included in the WHATWG specification for HTML5. Bitcoin is also planned to be added to the list of currencies in Microsoft Excel 2016
