World Chain is a Layer 2 blockchain designed to improve transaction efficiency with lower fees and faster speeds, especially for verified humans. The technology is built on Optimism's OP Stack, a blockchain framework that allows for the merging of transactions before they are settled on Ethereum, thereby reducing gas fees and increasing speed.

Sam Altman and his team at Tools For Humanity designed World Chain to prioritize human activity over bots, which currently dominate on-chain transactions. By integrating an identity verification system using Orb technology for iris scanning, only users verified as human will get priority in transactions on this network.