December 11th news, Naoki Shibata, an associate professor at Nara Institute of Science and Technology in Japan, recently proposed a new blockchain algorithm, which he called a "proof-of-search" The environmental cost of cryptocurrency mining. Straight hair Naoki said that his algorithm reduces the energy used by the blockchain by distinguishing users. There are three types of users in the "search proof algorithm" blockchain. One type of user wants to use the blockchain as a payment system. One type of user wants to use blockchain mining to earn electronic money. These two types of users are very similar to users of the proof-of-work algorithm; the third type of user wants to use the "search proof algorithm" blockchain as the grid computing infrastructure. However, Naoki Naoki pointed out that there is a problem with his alternative, that is, it will make users lose democracy, which will make them more vulnerable to external attacks.