What Is the ‘CoinJoin’ Technique and Which Privacy Coin Uses It?
CoinJoin is a technique that combines multiple users' transactions into a single large transaction. The inputs and outputs are mixed, making it difficult for an outside observer to determine which output belongs to which input.
It is a form of transaction mixing to enhance privacy. Dash, a cryptocurrency, utilizes a service called PrivateSend which is based on the CoinJoin principle to offer optional transaction privacy.
