On November 27, news reported that Shea Ketsdever, a researcher at Flashbots, an Ethereum infrastructure service, announced on social media the launch of BuilderNet, a decentralized Ethereum block building network that operates on a Trusted Execution Environment (TEE) and shares MEV (Maximum Extractable Value) with the community. BuilderNet aims to neutralize exclusive orderflow deals, enhance Ethereum's censorship resistance, and accelerate the decentralization of Rollups and application layers.