What is the block chain?

  • Somayeh Khajehasani
  • Ali Hadadi
  • Louiza Dehyadegari Sirjan University of technology
Keywords: Block chain, Decentralized office, Encryption keys, Distributed networks


In this paper, we examine the Chinese block technology. First, we will define block Chain, and then discuss how the block chain provides access to a large decentralized office so that there is no possibility of achieving it anymore. Furthermore, we will discuss the two technologies used in block chain, encryption keys and distributed network, as well as the problem of the confidence of transactions. We show that each member uses one of the consensus algorithms to update the data and explain the types of consensus algorithms, each containing the advantages and disadvantages.


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