$BTC A BTC pair refers to Bitcoin (BTC) traded against another cryptocurrency or fiat currency (like the US dollar). These pairs allow traders to speculate on the relative value of Bitcoin versus the other asset. Popular examples include BTC/ETH (Bitcoin vs. Ethereum) and BTC/USD (Bitcoin vs. US dollar). Traders analyze market trends to predict price movements and make informed decisions within these pairs, seeking to profit from changes in their relative values.