区块链（Blockchain）和Web3是当下科技和互联网领域的热门话题。它们不仅影响着科技的发展，同时也改变着我们日常生活中的许多方面。下面用英文详细介绍一下这两个概念。 ### What is Blockchain? Blockchain is a decentralized digital ledger technology that securely records transactions across multiple computers. This means that once information is entered into the blockchain, it cannot be easily altered or removed. It's essentially a chain of blocks, each containing data, with each block linked to the previous one, forming a secure chain. #### Key Features of Blockchain: 1. **Decentralization**: Unlike traditional databases that are controlled by a central authority (like banks or governments), blockchain operates on a network of computers, or nodes, each with a copy of the entire blockchain. This decentralization reduces the risk of a single point of failure. 2. **Transparency**: Every transaction on the blockchain is visible to anyone with access to the network. This transparency builds trust among users, as they can verify transactions independently. 3. **Security**: Blockchain employs cryptographic techniques to secure data. Transactions are hashed (converted into a fixed-size string of characters) and linked to previous transactions, making it extremely difficult for anyone to tamper with the data. 4. **Immutability**: Once data is recorded on the blockchain, it is almost impossible to change. This feature is crucial for maintaining the integrity of the data. ### What is Web3? Web3, often referred to as the 区块链（Blockchain）和Web3是当下科技和互联网领域的热门话题。它们不仅影响着科技的发展，同时也改变着我们日常生活中的许多方面。下面用英文详细介绍一下这两个概念。 ### What is Blockchain? Blockchain is a decentralized digital ledger technology that securely records transactions across multiple computers. This means that once information is entered into the blockchain, it cannot be easily altered or removed. It's essentially a chain of blocks, each containing data, with each block linked to the previous one, forming a secure chain. #### Key Features of Blockchain: 1. **Decentralization**: Unlike traditional databases that are controlled by a central authority (like banks or governments), blockchain operates on a network of computers, or nodes, each with a copy of the entire blockchain. This decentralization reduces the risk of a single point of failure. 2. **Transparency**: Every transaction on the blockchain is visible to anyone with access to the network. This transparency builds trust among users, as they can verify transactions independently. 3. **Security**: Blockchain employs cryptographic techniques to secure data. Transactions are hashed (converted into a fixed-size string of characters) and linked to previous transactions, making it extremely difficult for anyone to tamper with the data. 4. **Immutability**: Once data is recorded on the blockchain, it is almost impossible to change. This feature is crucial for maintaining the integrity of the data. ### What is Web3? Web3, often referred to as the