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It is a known fact that Bitcoin in the blockchain is not sure about user’s anonymity since transactions utilize pseudonymous addresses which verify openly. People narrate user’s transactions with his/her transaction history through a simple study of addresses employed in making Bitcoin. In an earlier section, we discussed that once the transaction’s address is associated with real user individuality, which causes the leakage of all users’ transaction records. Mixing is nothing but a random swap of user’s coins with new users’ coins.

1 i. Mixcoin: Bitcoin is designed to avoid passive threats, which intend to produce anonymous payments in Bitcoin and its kind of currencies. Mixcoin offers anonymity similar to time-honored communication mixes; furthermore, it employs a responsibility system to notice stealing.

2 ii. CoinJoin: The usage of coinjoin starts in 2013 as an optional practice for Bitcoin-based dealings. Coinjoin is mostly applied for joint payment, which means if one node wants to make a transaction, it searches or waits for another node interested in making payment. They jointly formulate payment in a single transaction. This will decrease the communication cost, and improperly implemented coin will reduce anonymity.