Polygon Labs proposes major upgrade to zkEVM Validium for PoS sidechain

Polygon Labs has proposed upgrading Polygon PoS from a sidechain-like design to a zkEVM validium, a zero-knowledge-secured Layer 2 architecture that would keep the network EVM-compatible while adding validity proofs and stronger security guarantees. The proposal was published first as a Pre-PIP discussion on the Polygon governance forum, with the company saying that if community consensus is reached, the idea would move into the formal Polygon Improvement Proposal process. The core promise is that the change would be largely invisible to end users and developers: Polygon says the network’s fees, smart contracts, validator role, and staked token would not change, and operators would mainly need to upgrade client software. Polygon framed the upgrade as part of its broader Polygon 2.0 roadmap, arguing that it would make Polygon PoS more secure and performant while turning it into a core piece of the ecosystem’s unified ZK stack. The proposal matters because Polygon PoS is one of the network’s most widely used chains, so moving it to a zkEVM validium would be a major architectural shift for a large live network. In the same period, Polygon developers also discussed an interim path to connect PoS to the AggLayer using Succinct Labs’ SP1 and Polygon’s Plonky 3 prover, suggesting the team is pursuing incremental steps toward the longer-term validium design while improving interoperability and liquidity sharing sooner.

✨ AI-generated background, compiled from web sources — not editorial content.

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