What is cryptocurrency?
Cryptocurrency is a digital or virtual currency that uses cryptographic technology to secure transactions, control the issuance of new units, and verify asset transfers. Its core feature is decentralization; it does not rely on regulation by any central bank, government, or financial institution. All transactions are recorded on a public, immutable distributed ledger known as the blockchain.Bitcoin(Bitcoin) was created in 2009 as the first decentralized cryptocurrency, laying the foundation for the entire industry.
As a subset of digital currencies, cryptocurrencies provide higher levels of security and privacy through cryptographic technology, while ensuring transparency and immutability via the blockchain.
A Roundup of the Top Five Mainstream Cryptocurrency Types in 2026
As of July 2026, the cryptocurrency market has evolved to include a variety of types designed to meet different functional needs and use cases. Below are the five dominant types in the current market and their representative projects.
1. Store-of-Value Cryptocurrencies (Representative: Bitcoin, BTC)
Bitcoin Widely hailed as “digital gold,” these cryptocurrencies primarily function as a store of value and are viewed as an effective hedge against inflation.Following the fourth halving in 2024, Bitcoin’s block reward dropped to 3.125 BTC, and its annualized inflation rate has fallen below that of gold. The ongoing development of Layer 2 solutions, such as the Lightning Network, continues to enhance Bitcoin’s utility for micropayments.
Institutional investor interest in Bitcoin continues to surge; as of July 9, 2026, the total assets under management (AUM) of U.S. Bitcoin spot ETFs had surpassed $120 billion, marking a shift in the market landscape from retail-dominated to institution-driven.At the same time, as of July 9, 2026, the proportion of holdings by long-term investors exceeded 70%, indicating a high degree of lock-up.
- Market Capitalization: Approximately $2.7362 trillion (as of July 9, 2026)
- 24-Hour Trading Volume: Approximately $94.23 billion (as of July 9, 2026)
- Circulating Supply: Over 19.7 million coins mined; total supply permanently locked at 21 million
- Price: Approximately $64,714.09 (as of July 26, 2026)
Numerous institutions and analysts, including Standard Chartered Bank and JPMorgan Chase, are generally bullish on Bitcoin’s performance in 2026, believing that ETF inflows, regulatory clarity, and accelerated institutional adoption will be the primary drivers. Bitwise and Grayscale have predicted that Bitcoin will reach a new all-time high in 2026, breaking the traditional “four-year cycle” logic.
2. Smart Contract Platforms and DeFi Infrastructure (Representatives: Ethereum’s ETH, Solana’s SOL, BNB’s BNB)
These cryptocurrencies serve as the cornerstone of decentralized applications (DApps) and the decentralized finance (DeFi) ecosystem, enabling developers to build and deploy smart contracts.
- Ethereum (ETH): As the world’s largest smart contract platform, Ethereum supports a vast ecosystem of DeFi, NFTs, Web3 games, and decentralized autonomous organizations (DAOs). Its “Merge” upgrade, completed in 2022, transitioned the network to a proof-of-stake (PoS) mechanism, significantly reducing energy consumption and improving efficiency.The U.S. SEC is set to approve the Ethereum spot ETF, which is viewed as a significant signal of Wall Street’s endorsement.
- Solana (SOL): Solana is a modern decentralized network known for its high transaction processing speed (up to 65,000 transactions per second) and low fees. It is widely used in DeFi protocols, NFT marketplaces, Web3 games, decentralized social networks, and payment systems.In 2026, Solana demonstrated strong growth in the number of active addresses.
- BNB (BNB): As the platform token of Binance, the world’s largest cryptocurrency exchange, BNB offers users various benefits, including discounts on trading fees, participation in initial exchange offerings (IEOs), and staking rewards.Binance’s massive business scale and BNB’s deflationary mechanism (regular buybacks and burns) provide strong ecosystem support.
Ethereum Its volatility is typically higher than that of Bitcoin, but it provides a broader platform for on-chain financial activities and the tokenization of real-world assets. Solana, however, needs to continuously monitor and improve its network stability.
3. Stablecoins (Representatives: USDT, USDT, USD Coin, USDC)
Stablecoins are designed to address the issue of extreme price volatility in cryptocurrencies by pegging their value to fiat currencies (such as the U.S. dollar), thereby providing a stable store of value and medium of exchange. They play a key role in cryptocurrency trading, DeFi lending, and cross-border payments.
- USDT (USDT): As of July 30, 2026, USDT remains the stablecoin with the largest market capitalization, boasting extremely high market liquidity and recognition. Tether has launched USAT, a stablecoin compliant with U.S. regulatory frameworks, to meet compliance requirements in the U.S. market.
- USDC (US Dollar Coin): The second-largest stablecoin by market capitalization, issued by Circle. Although it briefly de-pegged following the Silicon Valley Bank incident, its efforts in compliance and transparency have allowed it to maintain its significant position.As of June 2026, USDC had expanded its lead over USDT in terms of on-chain transaction volume.
As of June 2026, the total supply of stablecoins stood at approximately $320 billion. Although the stablecoin market’s total market capitalization declined that month, on-chain activity remained robust, with adjusted trading volume reaching $1.79 trillion.The focus of competition in the stablecoin space has shifted from “who issues” to “who distributes,” with traditional financial institutions and tech giants actively integrating stablecoins into payment networks and corporate financial workflows.
4. Layer 2 Solutions (Representatives: Arbitrum, Optimism, Polygon)
Layer 2 solutions are protocols or networks built on top of Layer 1 blockchains (such as Ethereum) designed to address Layer 1 scalability issues, significantly increase transaction speeds, and reduce fees.They alleviate the burden on the mainchain by processing the majority of transactions on Layer 2 and then batch-submitting the final results back to Layer 1 for settlement.
Optimistic Rollups and ZK-Rollups are currently the mainstream and increasingly mature technical approaches. The emergence of Layer 2 has made Web3 applications such as DeFi, NFTs, and GameFi cheaper, more efficient, and easier to use. The security of Layer 2 still depends on the Layer 1 on which it is built.
As of 2026, the Ethereum Layer 2 ecosystem has seen capital outflows, with Total Value Locked (TVL) slipping to approximately $5 billion—a new low since 2023.Nevertheless, the three major ecosystems—Optimism, Base, and Arbitrum—have a combined TVL of approximately $4.8 billion, accounting for 96% of the total Layer 2 TVL, and continue to hold a dominant position in the market.
5. Privacy Coins and Web3 Infrastructure (Representatives: Privacy coin category, Web3-related tokens)
This category of cryptocurrencies focuses on providing greater user privacy protection and building decentralized internet infrastructure.
- Privacy Coins: Designed to provide greater anonymity and privacy for transactions. In 2026, while the privacy sector faced regulatory pressure, it also witnessed technological breakthroughs such as the next generation of ZK privacy protocols, striving to strike a better balance between privacy and compliance.
- Web3 Infrastructure: This encompasses areas such as decentralized social media, gaming, and data storage, aiming to build a more decentralized, user-driven internet. For example, Sui has demonstrated growth potential in the Web3 social media and gaming sectors. Ethereum Smart contract platforms such as Solana are also major platforms for Web3 gaming and decentralized social networks. Layer 2 technology may become a core technology for gaming, privacy solutions, enterprise-level applications, and even cross-chain integration in the future, shaping a Web3 era centered around Layer 2.
The continued development of Web3 is one of the key trends in the cryptocurrency market. For privacy-focused cryptocurrencies, in an environment of increasingly stringent regulations, striking a balance between compliance and privacy through technological innovation is key to their development.
