@shenzhenwan
A CoinJoin is a privacy technique where multiple users combine their Bitcoin transactions into a single transaction, making it harder to trace individual inputs and outputs. By merging transactions, CoinJoin obscures the link between senders and recipients, as external observers cannot easily determine which output belongs to which input. This collective approach increases anonymity by breaking heuristic assumptions (e.g., "one input → one output") used in blockchain analysis. However, CoinJoin’s effectiveness depends on participant diversity and transaction volume.
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