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Crypto
Sidechain
A separate blockchain that's connected to a main chain like Ethereum, built to be faster or do special things.
Sidechains move some activity off the main chain to keep it from getting clogged. Assets can usually move back and forth through bridges. They're great for testing new ideas.It's like a side road that runs parallel to the main highway — same destination but way less traffic and its own rules.
Real world: Polygon is a sidechain for Ethereum where you can play games or trade NFTs with super low fees and lightning speed.
💡 Sidechains give you the best of both worlds — main chain security plus fast and cheap transactions.