Vitalik Buterin (Blockchain / Web3) at Ethereum — Various, International

Vitalik Buterin proposed Ethereum at age 19 in 2013 and co-founded it in 2014, creating the world's second-largest cryptocurrency and the foundation for decentralized finance, NFTs, and the broader Web3 ecosystem. A prodigious mathematical mind, Buterin continues to be deeply involved in Ethereum's technical evolution, including the Merge (transitioning to proof-of-stake), rollup scaling solutions, and privacy improvements. He donates significant crypto holdings to global health and AI safety causes.