$BTC When discussing the "BTC coin pair," it generally refers to trading pairs involving Bitcoin on various cryptocurrency exchanges. A trading pair typically involves two different cryptocurrencies that can be traded for each other, and the price reflects the amount of one currency you need to buy a unit of the other. Here are some common BTC trading pairs:

1. **BTC/USD**: Bitcoin to US Dollar. This is one of the most common pairs and is often used to measure the value of Bitcoin in fiat currency.

2. **BTC/ETH**: Bitcoin to Ethereum. This pair is popular within the cryptocurrency market where traders exchange Bitcoin for Ethereum or vice versa.

3. **BTC/USDT**: Bitcoin to Tether. Tether is a stablecoin pegged to the US Dollar, and this pair offers a way to trade Bitcoin with minimal volatility from fiat currency fluctuations.

4. **BTC/EUR**: Bitcoin to Euro. This is similar to the BTC/USD pair but for the Euro.

5. **BTC/BNB**: Bitcoin to Binance Coin. Trading Bitcoin against Binance Coin, the native currency of the Binance Exchange.

Exchanges have various trading pairs depending on their offerings and the demand in the market. When trading these pairs, it's essential to understand the market dynamics, historical trends, and the particular characteristics of each cryptocurrency involved.