Zhijun Wu, Yiming Yang and Xin Lu, Civil Aviation University of China, China

Blockchain has received widespread attention due to its decentralization, openness, autonomy, information tamper proof, and anonymity, and is currently on the rise. Some fatal weaknesses have been widely criticized in the process of evolution and development of blockchain technology. For example, the blockchain network has a large amount of data, large communication overhead, large storage overhead, and poor timeliness. The causes of these defects are complex, and the increase for data is the most important of many. In order to solve above problems, we research on the self-designed alliance chain that supports deletable ledger function, which can implement the function of searching and deleting ledger transactions. After the deletion request and execution are verified and agreed by the consensus nodes, the blockchain ledger is compressible or deletable. At the same time, the integrity of the forward and backward verification of the corresponding high-level blocks can be guaranteed without affecting the storage and usage of other blocks.

Blockchain, Deletable Ledger, Simulation Alliance Chain, Forward and Backward Verification