A token is a blockchain-based digital unit of value issued by a project, usually on top of an existing blockchain. In everyday crypto talk, “token” can be used broadly to mean a cryptoasset, but more precisely it refers to assets created through smart contracts rather than a network’s native currency.
How tokens differ from coins
A key distinction is between coins and tokens. A coin is native to its own blockchain and is typically used for network fees and security incentives, such as BTC on Bitcoin or ETH on Ethereum. A token is created within a host blockchain’s ecosystem, commonly using standards like ERC-20 for fungible tokens or ERC-721 and ERC-1155 for non-fungible tokens (NFTs). Because tokens rely on an existing chain’s infrastructure, they inherit its security model and settlement layer, while still being programmable through smart contracts.
What tokens represent and how they work
Tokens can represent utility, ownership, rights, or claims within an application. For example, a decentralized exchange might issue a governance token that lets holders vote on protocol upgrades. A stablecoin token can represent a currency value within on-chain markets, enabling trading and payments without leaving the blockchain. NFTs are also tokens, but they represent unique items, such as digital collectibles, game assets, or tokenized credentials. Technically, token contracts track balances, transfer rules, and sometimes additional logic like minting, burning, access control, or compliance checks.
Token categories and why this matters
In practice, tokens are often described by what they do: network or utility tokens for access, security tokens that resemble regulated investment instruments, asset-backed tokens tied to real-world assets, and memecoins driven largely by community dynamics. Understanding what a token represents, how it is issued, and what rights it grants matters for evaluating risk, usefulness, and trust. Tokens are the building blocks of decentralized applications, making them central to how value and coordination work across the crypto ecosystem.