TechFlow news, October 20: This morning, Ethereum founder Vitalik Buterin posted an introduction to the GKR protocol. The GKR (Goldwasser-Kalai-Rothblum) protocol is emerging as a core technology for high-performance zero-knowledge proof systems. Recent research shows that by avoiding commitment operations in intermediate layers and only committing to inputs and outputs, GKR can reduce the theoretical overhead of traditional STARK methods from 100x to approximately 15x, and in practical implementations even below 10x. The protocol is particularly suitable for multi-layered computation patterns such as the Poseidon hash function and neural networks. Its core "sumcheck" technique recursively simplifies multidimensional problems via randomized linear combinations. Although GKR itself does not provide zero-knowledge properties, it can be combined with ZK-SNARKs or ZK-STARKs, and has become a key enabling technology for real-time ZK-EVM proofs and verification of large-scale machine learning models.
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