Polygon @0xMiden, the fourth chain in the Polygon ecosystem, has positioned itself as an "Edge ZK-Rollup" to compete with zkSync and StarkNet. This innovative chain decentralizes execution and state to the client side, allowing users to generate recursive zk-STARK proofs locally, which are verified on-chain only once, balancing high throughput with privacy. The platform features Hybrid Notes, combining account and UTXO models for assets that can be both contract-invoked and anonymously transferred. It also supports Rust to WASM contracts and native account abstraction, enhancing security and usability with features like multi-signature and social recovery. In April 2025, Polygon @0xMiden secured $25 million in seed funding led by 1kx and Hack VC, with participation from a16z and Polygon Ventures. The mainnet launch is pending, with a token generation event expected in Q1 2026. Polygon @0xMiden aims to seamlessly connect with PoS and zkEVM through the Polygon bridge, addressing privacy gaps in the ecosystem. It complements existing Layer 2 solutions by forming a "low-cost-compatible-privacy" triangle, marking a crucial piece in Polygon's multi-chain strategy.