#TradingTypes101 Coin Pair (or Trading Pair):

* A "coin pair" (or "trading pair" or "cryptocurrency pair") is a combination of two different cryptocurrencies (or a cryptocurrency and a fiat currency) that can be traded against each other on a cryptocurrency exchange.

* It expresses the value of one currency in terms of another. For example, BTC/USDT means you are trading Bitcoin (BTC) against Tether (USDT), a stablecoin pegged to the US Dollar. ETH/BTC means you are trading Ethereum (ETH) against Bitcoin (BTC).

* The first currency in the pair is typically the base currency, and the second is the quote currency. When you see a price for BTC/USDT, it tells you how much USDT you need to buy one BTC.

In summary:

* Hash tag (or transaction hash) is about identifying and verifying individual transactions on the blockchain.