According to @VitalikButerin, a GKR protocol tutorial is now live on vitalik.eth.limo and is presented as an educational post rather than a governance or product announcement. Source: https://twitter.com/VitalikButerin/status/1980063617002426751 https://vitalik.eth.limo/general/2025/10/19/gkr.html GKR refers to the Goldwasser Kalai Rothblum interactive proof protocol for efficiently verifying layered arithmetic circuits via the sum check technique introduced in 2008. Source: https://arxiv.org/abs/0709.0171 https://people.cs.georgetown.edu/jthaler/ProofsArgsAndZK.pdf Zero knowledge rollups on Ethereum use succinct proofs to compress off chain computation and scale throughput. Source: https://ethereum.org/en/developers/docs/scaling/zk-rollups/ Rollups post data to Ethereum L1 and pay fees in ETH, which interact with EIP 1559 burn mechanics and the fee market. Source: https://ethereum.org/en/developers/docs/scaling/rollups/ https://ethereum.org/en/developers/docs/gas/ STARK based systems such as Starknet and Immutable X are built on zk proof technology from StarkWare, with active ecosystems and tradable tokens STRK and IMX that are tied to these networks. Source: https://starkware.co/resource/what-are-starks/ https://docs.starknet.io/documentation/shared/starknet_token/ https://docs.immutable.com/docs/starkex/background/ For traders, the post signals ongoing focus on core zk proof building blocks that underpin Ethereum scaling, but it does not communicate immediate mainnet parameter changes or token mechanics updates. Source: https://twitter.com/VitalikButerin/status/1980063617002426751 https://vitalik.eth.limo/general/2025/10/19/gkr.html