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I hear them almost used interchangeably, and I was wondering what the technical difference is so that I can use the terms correctly.

From my understanding, a sidechain is a subset of a state channel (just an implementation of a blockchain as the channel), but I'm curious if there are any good resources out there.

marked as duplicate by smarx, Richard Horrocks, Roman Frolov, eth Jan 11 '18 at 21:23

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