Sidechain
A sidechain is a separate blockchain that runs parallel to a main blockchain (like Bitcoin or Ethereum), allowing assets to be transferred between them through a two-way peg mechanism. It enables developers to experiment with new features, such as different consensus algorithms or smart contract capabilities, without risking the security of the main chain. Sidechains are used to enhance scalability, interoperability, and functionality in blockchain ecosystems.
Developers should learn about sidechains when working on blockchain projects that require scalability solutions, interoperability between different chains, or safe testing of new protocols. For example, they are useful in decentralized finance (DeFi) applications to offload transactions from congested mainnets, or in gaming platforms to implement custom rules without affecting the primary network. Understanding sidechains is crucial for building modular and efficient blockchain architectures.