Sidechain
A separate blockchain that runs in parallel to a main blockchain and is connected to it by a two-way bridge. Sidechains can have their own consensus rules and are used to offload transactions and enable features not possible on the main chain.
Why It Matters
Sidechains allow for more flexibility in blockchain technology by enabling transactions and features that are separate from the main blockchain. This is important for scalability and can help reduce congestion, making crypto transactions faster and cheaper for users.
Example
For instance, imagine a main blockchain handling digital currency transactions, while a sidechain is used specifically for smart contracts. This separation helps ensure that the main blockchain remains efficient while still supporting innovative features.
Beginner Context
For beginners, understanding sidechains is crucial as they reveal how different blockchains can work together. This innovative technology expands the capabilities of cryptocurrencies and allows users to participate in specialized applications without burdening the main network.
Mike Starr
Founder, CryptoWizardTools · M.S. Organizational Management
Last reviewed: August 2026
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