A $BTC coin pair refers to a trading pair on a cryptocurrency exchange where Bitcoin (BTC) is used to trade against another cryptocurrency or asset.

For example:

ETH/BTC means you’re trading Ethereum (ETH) using Bitcoin.

ADA/BTC means you’re buying or selling Cardano (ADA) priced in Bitcoin.

Why It Matters:

It lets traders measure the value of altcoins (alternative coins) directly in Bitcoin, not just in dollars.

It helps people accumulate more BTC over time by trading into coins they think will rise faster than Bitcoin.

BTC pairs are often used by more experienced traders who think in terms of Bitcoin, not fiat currencies.

So when you see "$BTC coin pair," it means people are talking about trading other cryptocurrencies in relation to Bitcoin rather than in USD or another fiat currency.