  Bitcoin has emerged in 2008, and after decades of development, it has become
the largest trading currency by far. The core of the blockchain is to ensure
the anonymity of user transactions. As more and more analysis algorithms for
blockchain transactions appear, the anonymity of the blockchain is increasingly
threatened. We propose Tomen, an encryption application for the communication
process in the bitcoin transaction process, combined with the encryption
principle method of Tor. The goal is to achieve the application of the
anonymization of bitcoin transaction communication.
