Base launches on-chain identity verification tool to prevent sybil attacks in airdrops and token distributions.
Tech & Launches ·
Base launched Base Verify Onchain on Base Sepolia, an identity verification system that enables smart contracts to enforce single-claim rules per real user and prevent airdrop siphoning by wallet farmers. The tool has exceeded 300,000 uses and integrates verification through Coinbase, Instagram, X, and TikTok accounts, generating a deterministic identity hash that allows a single person to maintain multiple wallets while remaining countable as one claimant. Developers can now implement per-person distribution caps, fair token sales, and one-vote governance mechanisms without maintaining separate claimant databases. Use cases span reward distribution, launches with individual allocation limits, and reputation systems based on verified account credentials like Coinbase One membership or X account age.