Vitalik Buterin

▸ Vitalik Buterin: Ethereum co-founder; Pectra upgrade live; $200B+ network value; 1M+ daily active addresses

Co-founder of Ethereum — the programmable blockchain powering DeFi, NFTs, and the onchain economy. Lead researcher and philosophical voice of the Ethereum ecosystem. 2025 milestones: Pectra upgrade expanded blob capacity, gas limits increased toward 60M, zkEVM proving times improved 60x. Proposed replacing the EVM with RISC-V architecture. Prolific blogger on cryptography, mechanism design, AI, privacy, and decentralized governance. CoinDesk Most Influential multiple years running.

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Sandeep Nailwal@sandeepnailwal

Co-founder and CEO of the Polygon Foundation — one of Ethereum's most widely used scaling networks. Became CEO in June 2025, taking unilateral control to refocus strategy. Sunsetting Polygon zkEVM in 2026. Doubling down on Polygon PoS (GigaGAS upgrade: 100K TPS target) and AggLayer cross-chain interoperability. 1.4B stablecoin transactions in 2025, 14M monthly users. Mastercard, Stripe, and Revolut integrations live.

Polygon Foundation CEO since June 2025; 1.4B stablecoin txns in 2025; 14M monthly users

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Varun Srinivasan@varunsrin

Co-founder of Farcaster alongside Dan Romero. Built the protocol stack and technical architecture that enabled decentralized social on Ethereum. Farcaster sold to Neynar in January 2026. Now at Tempo as CTO — building a fast, transparent global payments network on stablecoins.

Farcaster co-founder; Tempo co-builder ($5B valuation)

EthereumBase

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Devin Finzer@dfinzer

Co-founder and CEO of OpenSea — the largest NFT marketplace, now pivoting to become a "trade everything" onchain platform spanning 22 blockchains. $13B valuation at peak. In 2026 OpenSea is evolving from NFT marketplace to a full-stack token trading platform with perps, cross-chain aggregation, and the SEA token launch. $2.6B in monthly trading volume in late 2025.

OpenSea: $13B valuation at peak, $2.6B monthly trading volume

EthereumBase

Both building infrastructure on Ethereum