Decentralized Web Technologies

1. Introduction

The decentralized web, often referred to as Web 3.0, represents a paradigm shift from the traditional centralized web model. This lesson will explore the foundational technologies, key concepts, and best practices associated with decentralized web development.

2. Key Concepts

3. Key Technologies

• Blockchain platforms (e.g., Ethereum, Solana)
• Decentralized storage solutions (e.g., IPFS, Filecoin)
• Decentralized identity protocols (e.g., DID, Self-Sovereign Identity)

4. Code Example

Below is a simple example of a smart contract written in Solidity for Ethereum:

pragma solidity ^0.8.0;

contract SimpleStorage {
    uint public storedData;

    function set(uint x) public {
        storedData = x;
    }

    function get() public view returns (uint) {
        return storedData;
    }
}
            

5. Best Practices

1. Always perform thorough testing for smart contracts to avoid vulnerabilities.
2. Use established libraries and frameworks (e.g., OpenZeppelin) when developing decentralized applications.
3. Implement proper security measures for user data and identity management.

6. FAQ