Coin

A coin is a cryptocurrency that belongs to a specific blockchain. Bitcoin is the coin of the Bitcoin network, while ETH is the native coin of the Ethereum network. Coins are typically used to transfer value, pay network fees, reward miners or validators, or support activity on their own blockchain. A coin is different from a token, which is usually built on top of an existing blockchain through a smart contract. Still, many people use the word “coin” to casually describe any crypto asset, but in a glossary context it refers to a native blockchain asset.

BTC is a coin because it runs on the Bitcoin blockchain. ETH is also a coin because it is the native asset used to pay gas fees and support activity on Ethereum.