[Vitalik Buterin calls pledge centralization one of Ethereum's "biggest risks" in "scourge" overview] Golden Finance reported that Ethereum co-founder Vitalik Buterin outlined in a recent blog post the methods that the Ethereum community may take to minimize the centralization of proof of stake, which is part of the blockchain's planned "disaster" upgrade. Buterin called this issue "one of the biggest risks" to the Ethereum network and outlined several possible ways to block construction and pledge capital supply to minimize the risk. (The Block)