A coin pair with BTC (Bitcoin) refers to a trading pair where Bitcoin is paired with another cryptocurrency or fiat currency. Examples include:

- *BTC/USDT*: Bitcoin paired with Tether (a stablecoin pegged to the US dollar)

- *BTC/ETH*: Bitcoin paired with Ethereum

This allows traders to exchange Bitcoin for the paired currency or vice versa. Coin pairs are essential for trading and investing in cryptocurrencies.

$BTC