# Blockchain Networks Explained **Networks** refer to different blockchain platforms where transactions and smart contracts are processed. Each blockchain has its own unique currency, and features, serving as the foundation for various applications and ecosystems. Think of a blockchain network as a large, digital database where every transaction and activity is recorded. This database is decentralized, meaning it’s maintained by thousands of computers (called nodes) around the world, making it secure and resistant to tampering. Here are some key concepts to understand about blockchain networks: ### **Transactions** * Each network handles transactions differently in terms of speed, cost, and security. Transactions involve sending cryptocurrency from one wallet to another, and they often come with fees (sometimes called "gas"). ### **Smart Contracts** * Many networks support smart contracts—self-executing programs that run on the blockchain. These contracts allow for more complex transactions, like automated trades or decentralized applications (dApps). ### **Tokens** * Networks can have their own native cryptocurrency (like ETH on Ethereum) as well as other tokens built on top of them (such as ERC-20 tokens on Ethereum or SPL tokens on Solana). Different networks are optimized for different purposes. For example, **Ethereum** is known for its strong developer community and dApps, while **Solana** is praised for its speed and low transaction fees. *** --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.bitfoot.com/new-to-crypto/blockchain-networks-explained.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.