According to @VitalikButerin, Polygon hosts Polymarket and he called it probably the single most successful example of a not just boring finance app that has actually been successful and provided value, as posted on X on Oct 21, 2025. According to @VitalikButerin on X on Oct 21, 2025, Polygon has also hosted many applications requiring high levels of scalability. According to @VitalikButerin on X on Oct 21, 2025, Polygon invested early in ZK-EVM proving by bringing in Jordi Baylina's team and through other efforts, which he said greatly helped move the space forward. According to @VitalikButerin on X on Oct 21, 2025, Polygon built infrastructure for proof aggregation via AggLayer and other components. According to @VitalikButerin on X on Oct 21, 2025, he hopes Polygon can adopt off the shelf ZK technology to upgrade the PoS chain to full stage 1 and later stage 2 security guarantees from the Ethereum L1. According to @VitalikButerin on X on Oct 21, 2025, proving costs are around 0.0001 USD per transaction, ZK tech has improved substantially, and projects like Lighter_xyz show viability beyond Ethereum L1 scale. According to @VitalikButerin on X on Oct 21, 2025, the market structure has split into L2 teams and ZK teams as separate entities, citing examples such as SuccinctLabs, RiscZero, and brevis_zk. According to @VitalikButerin on X on Oct 21, 2025, he also highlighted Sandeep Nailwal's work with CryptoRelief in India, noted that Sandeep returned 190 million USD worth of SHIB to him enabling the Balvi open source anti airborne disease biotech program, added that CZ donated 10 million USD in BNB, and said he recently added about 20 million USD of his own funds without selling ETH.