According to AMBCrypto, blockchain developer Danno Ferrin said in an event that Ethereum's implementation of ProgPow upgrade will result in a sharp drop in its hash rate. The biggest reason for this explanation is that the work done in ProgPow is twice as "difficult" as Ethash's work, partly because it is a memory-hard algorithm; the second reason is that different ProgPow cycles are different. Hash rate. He believes that the program that calculates the PoW (work proof) will be changed according to the block number, and a "different random generator" algorithm will be generated every ten blocks. In addition, Ferrin said that the drop in the hash rate will have an impact on the time of the block and the difficulty bomb.