$BTC If you see ETH/BTC as a trading pair, it means you are trading Ethereum (ETH) against Bitcoin (BTC).

The price shown for the pair indicates how much BTC is needed to buy 1 ETH.

For example, if ETH/BTC = 0.065, it means 1 ETH costs 0.065 BTC.

Why It Matters:

1. Price Comparison: It allows traders to compare the value of altcoins directly with Bitcoin.

2. Arbitrage Opportunities: Different exchanges may have slight variations in BTC pairs, allowing for arbitrage.

3. Market Influence: Many altcoins are valued relative to BTC, as it's a major liquidity provider in the crypto market