Background & Purpose: On the Internet of Things (IoT), the anonymity and availability of nodes and the security of the exchanged information have paramount importance. To solve these problems, the combination of methods and technologies introduced in other networks can be used. In this paper, the mechanism of Delay Tolerant Networks (DTN) will be used in order to always save the availability of information. In the next step, in order to ensure anonymity, an improved combination of blockchain technology and anonymous onion routing methods will be used to protect the privacy and security of the information.

Methodology: The present study is presented using methods based on simulation and its implementation in the laboratory environment.

Findings: The proposed method uses the existing infrastructure in the network, as well as to tolerating delays, completely preserves the anonymity of the nodes. The proposed method reduces the computational overload on nodes by promoting onion anonymity methods, and also leads to complete anonymity and direct use in DTN by improving the method of using blockchain technology.

Conclusion: The proposed method, using environmental infrastructure, can be used in DTN and increases the availability of nodes. In addition, applying the mechanism of blockchain systems using the methods of combined services and shared wallets increases the security of data and information measured by IoT equipment and devices.