POPA ReconBase Launches Onchain Anti-Sybil Identity
Base Launches Onchain Anti-Sybil Identity Base, Coinbase's Ethereum L2, has launched Base Verify Onchain: a way for smart contracts to enforce one-person-one-claim and shut out bot farming and duplicate airdrop claims. Instead of judging a wallet's history, contracts check a per-app "identity hash" drawn from a user's verified credentials, such as a linked X account or a Coinbase One membership. The same human gets the same hash across wallets, so they cannot claim twice. It is built on Coinbase-backed onchain attestations, not zero-knowledge proofs, and is live on testnet for developers, w…
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