an EIP can propose any improvement or change to Ethereum. Anyone can create an EIP, which the Ethereum community, a board of editors, and Ethereum developers review. To be included in an update, the EIP must pass the approval process. Each EIP contains the technical requirements for a particular change according to a specific EIP format. We briefly mentioned Arrow Glacier contains only one EIP, in this case EIP-4345. Its only goal is to extend the time before Ethereum’s mining ice age.