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What is CoinJoin?
CoinJoin is a privacy-enhancing technology that allows multiple users to join their transactions together, making it more difficult to trace the origin of the coins. The idea behind CoinJoin is to break the link between the input and output addresses in a transaction, which makes it more difficult to track the movement of specific coins.
It works by having multiple participants contribute inputs to a transaction, and then creating multiple outputs that are controlled by new addresses. The inputs and outputs are mixed together in such a way that it is difficult to determine which input corresponds to which output. This makes it more difficult to trace the movement of specific coins, providing increased privacy for the participants.