I can tell you some of the most common altcoin names, but it should be emphasized that the market performance of these cryptocurrencies does not represent future investment returns:

1. Ethereum: Ethereum is a well-known blockchain platform that allows developers to create smart contracts and decentralized applications (DApps). Ethereum's token is called Ether (ETH)

2. Ripple (XRP): Ripple was developed by Ripple to provide efficient solutions for cross-border payments. 3. Litecoin (Litecoin): Litecoin is often called the silver version of Bitcoin. It has similar characteristics to Bitcoin, but with faster transaction confirmation time. 4. Dogecoin (Dogecoin): Dogecoin is a comic-based cryptocurrency that is dog-themed and has gained widespread attention.

5. Cardano (Cardano): Cardano is a blockchain platform designed to solve scalability and security problems. Its token is called ADA.

6. TRON (TRON): TRON is a blockchain platform dedicated to building decentralized content sharing and application hosting. 7. Polkadot (Polkadot): Polkadot is a platform designed to connect different blockchains. It allows interoperability between different blockchain networks.

8. BitShares: BitShares is a decentralized autonomous organization that provides blockchain-based financial products and services.

9. Surfing: Surfing is a platform designed to provide infrastructure for blockchain applications.

10. The Graph: The Graph is a protocol that provides a query interface (API) for blockchain data. Very professional