Token

What Is a Token?

A token is a digital asset created and managed by a smart contract deployed on an existing blockchain. Unlike a coin, which is the native currency of its own blockchain (Bitcoin on the Bitcoin network, ETH on Ethereum, SOL on Solana), a token leverages infrastructure that already exists. This distinction matters: building a coin means launching an entire blockchain, while creating a token requires only deploying a contract on one.

The concept emerged from the need to represent diverse forms of value on programmable blockchains. Before standards like ERC-20, each token project implemented its own custom interface, making wallets and exchanges incompatible with one another. Standardization changed that: a single wallet can now hold thousands of different tokens because they all speak the same interface language.

Over 50 million token contracts have been deployed across all blockchains. Ethereum alone hosts more than 500,000 ERC-20 contracts, while Solana has seen over 15 million token launches. The vast majority are inactive or worthless, but the infrastructure that makes token creation accessible has enabled stablecoins, decentralized governance, tokenized real-world assets, and entirely new financial primitives.

Tokens vs. Coins

The token-versus-coin distinction is fundamental. A coin operates on its own independent blockchain: Bitcoin (BTC), Ether (ETH), and SOL each secure their respective networks and pay for transaction processing. A token rides on top of an existing chain, inheriting its security and consensus without needing its own validators or miners.

In practice, the line blurs. Some projects launch as tokens on Ethereum before migrating to their own chain. Others, like wrapped tokens (WBTC, WETH), represent coins from one chain as tokens on another.

How Tokens Work

At a technical level, a token is simply a smart contract that maintains a ledger of balances. The contract tracks which addresses hold how many units, and exposes functions for transferring, approving, and querying those balances. Token standards define exactly which functions a contract must implement so that wallets, exchanges, and other contracts can interact with it predictably.

Token Standards

A token standard is a specification that defines a common interface for tokens on a given blockchain. Major standards include:

• ERC-20 (Ethereum): proposed in 2015 by Fabian Vogelsteller and Vitalik Buterin, this standard defines six functions (transfer, transferFrom, approve, allowance, balanceOf, totalSupply) for fungible tokens. Over 500,000 ERC-20 contracts exist on Ethereum.
• ERC-721 (Ethereum): finalized in June 2018, this standard defines non-fungible tokens where each token has a unique identifier and owner.
• ERC-1155 (Ethereum): a multi-token standard that manages both fungible and non-fungible tokens in a single contract, with batch operations that reduce gas costs.
• BRC-20 (Bitcoin): introduced in March 2023 by pseudonymous developer Domo, this experimental standard inscribes JSON data onto individual satoshis using the Ordinals protocol to create fungible tokens on Bitcoin.
• SPL (Solana): Solana's native token program manages all token types through shared Mint Accounts and Token Accounts, avoiding the per-token contract deployment model used on Ethereum.
• Taproot Assets (Bitcoin): developed by Lightning Labs, this protocol embeds asset metadata in Taproot outputs, enabling tokens to be issued on Bitcoin and transferred over the Lightning Network.

Creating a Token

On Ethereum, creating a fungible token means deploying a Solidity contract that implements the ERC-20 interface. A minimal example:

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.20;

import "@openzeppelin/contracts/token/ERC20/ERC20.sol";

contract MyToken is ERC20 {
    constructor(uint256 initialSupply)
        ERC20("MyToken", "MTK")
    {
        _mint(msg.sender, initialSupply);
    }
}

The constructor mints the entire initial supply to the deployer's address. From that point, anyone holding the token can call transfer to send tokens, or approve to authorize another contract to spend on their behalf. Deployment costs vary: $50 to $500+ on Ethereum L1 depending on gas conditions, roughly $15 to $60 on Solana, or under $1 on Ethereum L2s.

Types of Tokens

Utility Tokens

Utility tokens provide access to a product or service within a blockchain ecosystem. BNB pays transaction fees on BNB Chain, FIL pays for decentralized storage on the Filecoin network, and BAT rewards users within the Brave browser. These tokens function as consumable keys to platform services rather than as investments.

Governance Tokens

Governance tokens grant holders voting rights over protocol decisions: fee structures, treasury spending, risk parameters, and upgrades. UNI governs the Uniswap protocol, AAVE controls lending parameters and cross-chain strategy, and MKR directs the Maker protocol's stability fees and collateral types. Voting can happen on-chain (with binding smart contract execution) or off-chain via platforms like Snapshot. As of 2026, the combined market cap of governance tokens is roughly $30 billion.

Security Tokens

Security tokens represent ownership in real-world assets on a blockchain: equity, debt, real estate, or commodities. They carry the rights and obligations of traditional securities and must comply with applicable securities laws (SEC registration or exemptions in the U.S., MiCA in the EU). BlackRock's BUIDL fund tokenizes short-duration U.S. Treasuries with over $2.5 billion in assets under management, while PAX Gold (PAXG) provides 1:1 backing by physical gold bars. The tokenized real-world asset (RWA) market crossed $32 billion in on-chain value by mid-2026.

Stablecoins

Stablecoins are tokens designed to maintain a stable value, typically pegged to a fiat currency like the US dollar. USDT ($188 billion market cap) and USDC ($78 billion) together represent approximately 92% of the stablecoin market. The total stablecoin market cap exceeded $320 billion in 2026. They come in several models: fiat-backed (reserves held in bank deposits and Treasuries), crypto-backed ( overcollateralized by on-chain assets), and algorithmic (using supply adjustments to maintain peg). In the U.S., the GENIUS Act now provides a regulatory framework for payment stablecoins.

Non-Fungible Tokens (NFTs)

NFTs are tokens where each unit is unique, identified by a distinct token ID within the contract. Unlike fungible tokens where any unit is interchangeable, NFTs certify ownership of specific digital or physical items: artwork, game assets, event tickets, domain names, and credentials. The ERC-721 standard defines the interface on Ethereum, while ERC-1155 supports NFTs alongside fungible tokens in a single contract.

Tokenomics

Tokenomics refers to the economic design of a token: how supply is managed, distributed, and incentivized over time. Key elements include:

• Supply types: fixed supply (Bitcoin's 21 million cap), inflationary (Dogecoin adds roughly 5 billion per year), or deflationary (supply decreases via burns)
• Vesting schedules: tokens allocated to teams and investors typically follow a 4-year vesting period with a 1-year cliff, after which 25% unlocks immediately and the remainder vests linearly
• Burns: permanently removing tokens from circulation by sending them to an irretrievable address. Ethereum's EIP-1559 automatically burns the base fee of every transaction, while BNB uses quarterly burns targeting a reduction from 200 million to 100 million total supply
• Emission curves: the rate at which new tokens enter circulation. Bitcoin halves its block reward every 210,000 blocks (roughly every four years), creating a logarithmic curve approaching the supply cap

Understanding tokenomics is critical for evaluating any token project. Supply schedules, distribution allocations, and burn mechanisms directly affect long-term value dynamics.

Tokens on Bitcoin

Bitcoin was not originally designed for multi-asset issuance, but several protocols have brought token functionality to the network:

• BRC-20: uses Ordinals inscriptions to encode token operations as JSON data on individual satoshis. No smart contracts are involved: off-chain indexers track balance states. The first BRC-20 token, ORDI, had a supply of 21 million units.
• Runes: a more efficient protocol for fungible tokens on Bitcoin that uses OP_RETURN outputs instead of inscriptions, reducing blockchain bloat.
• Taproot Assets: developed by Lightning Labs, this protocol stores asset metadata off-chain with only a cryptographic commitment on-chain in Taproot outputs. Assets can be deposited into Lightning channels for instant, low-cost transfers. Tether launched USDT on Lightning via Taproot Assets in March 2026.

The emergence of tokens on Bitcoin is significant for the stablecoins-on-Bitcoin landscape. Platforms like Spark enable self-custodial token transfers on Bitcoin's Layer 2 infrastructure, bringing the speed and low cost of off-chain settlement to multi-asset use cases.

Use Cases

• Payments and remittances: stablecoins like USDC and USDT enable near-instant cross-border transfers without correspondent banking delays or forex spreads
• Decentralized governance: DAOs use governance tokens to coordinate decisions across thousands of stakeholders without centralized management
• Asset tokenization: security tokens bring traditional assets (Treasuries, equities, real estate) on-chain, enabling fractional ownership and 24/7 trading
• Platform access: utility tokens gate features, pay for computational resources, and incentivize participation in decentralized networks
• Digital collectibles and identity: NFTs certify ownership of unique items and can serve as non-transferable credentials (soulbound tokens)
• DeFi composability: standardized tokens can be composed across lending protocols, DEXs, liquidity pools, and yield strategies without custom integration

Risks and Considerations

Regulatory Uncertainty

Whether a token is classified as a security depends on how it is sold and marketed. Under the Howey test, a token is a security if buyers invest money in a common enterprise expecting profits from others' efforts. The SEC has pursued enforcement actions against projects selling tokens that meet this standard. In March 2026, the SEC clarified that most crypto assets are not inherently securities, but the manner of their sale can still trigger securities law. In the EU, the MiCA regulation provides a harmonized framework that took full effect in 2024-2025.

Smart Contract Risk

Tokens are only as reliable as the contracts that govern them. Bugs in token contracts can lead to unauthorized minting, frozen transfers, or drained liquidity. Even audited contracts are not immune: novel attack vectors, logic errors in upgrade mechanisms, and compromised admin keys remain persistent threats. The immutability of deployed contracts means bugs often cannot be fixed without migrating to a new contract entirely.

Scams and Low-Quality Projects

The low barrier to token creation has a downside: the vast majority of tokens launched are low-effort projects, pump-and-dump schemes, or outright rug pulls. More than half of all tokens ever created have effectively failed. On platforms like Pump.fun, which facilitated over 12 million token launches on Solana, the overwhelming majority lose their value within days. Always verify a token's contract, team, audit status, and tokenomics before interacting with it.

Centralization Risks

Many tokens concentrate control in ways that contradict the decentralized ethos of blockchain. Admin keys can pause transfers, blacklist addresses, or mint unlimited supply. Token distribution that favors insiders (large team and investor allocations with short vesting) can lead to sell pressure when unlocks occur. Understanding who controls a token's minting authority, upgrade keys, and supply allocation is essential due diligence.

This glossary entry is for informational purposes only and does not constitute financial or investment advice. Always do your own research before using any protocol or technology.