BTC

BTC is the ticker symbol and standard unit abbreviation for bitcoin, the native asset of the Bitcoin network. One BTC divides into 100 million satoshis, and the protocol caps total supply at just under 21 million BTC, of which more than 19.5 million had been mined by 2024. Some platforms also use the alternative ticker XBT, following the ISO convention that non national currencies begin with X.

Why it matters

A ticker seems trivial until an asset trades globally around the clock, at which point a shared symbol becomes the unit of a worldwide price. BTC pairs are the reference market of the entire cryptocurrency industry, and BTC denominated pricing is how bitcoiners measure other assets, asking whether something is gaining or losing value in bitcoin terms. The abbreviation also does distinguishing work: BTC refers specifically to the original chain, separating it from forks such as BCH that carry the bitcoin name but different rules and separate markets.

In the gold vs bitcoin debate

Gold trades under the ticker XAU, from the Latin aurum, and the parallel naming is telling: both are treated by markets as currency like assets rather than ordinary commodities. The comparison usually runs through the XAU and BTC prices in dollars, but partisans of each asset prefer the direct ratio, how many ounces one bitcoin buys, as the cleanest scoreboard of the debate. That ratio has moved from effectively zero in 2010 to tens of ounces per coin in the 2020s.