[Base Build Launches Verify Onchain to Address Airdrop Sybil Attack Issues] BlockBeats News, July 28: According to official sources, Base Build has announced the launch of Base Verify Onchain to tackle Sybil attack issues in the blockchain ecosystem. This feature has been deployed on the Base Sepolia testnet, allowing developers to implement the rule of 'one real user, one claim' in smart contracts. Base Build stated that traditional airdrop mechanisms are easily manipulated by bulk wallets, with large rewards often captured by professional airdrop farmers, leaving users who genuinely contribute to product development with limited benefits. Base Verify Onchain helps project teams identify multiple wallets controlled by the same user by generating a stable identity hash for each real user, without requiring personal information such as names or account details. Users can complete verification through existing accounts on platforms like Coinbase, Instagram, X, TikTok, etc. The system then returns a verified identity credential to the smart contract, which automatically enforces rules such as claim limits, voting restrictions, or quota controls. To date, Base Verify has been used over 300,000 times and has supported partner projects such as Base App, Cody, Scratch, and Bracket. Base Build stated that Verify Onchain will provide decentralized applications with fairer mechanisms for airdrops, token distributions, governance voting, and user incentives. Developers can leverage this technology to limit the number of claims per real user, allocate rewards based on verified identities, or convert real-world signals into on-chain reputation, thereby reducing the impact of bots and multi-wallet manipulation on the fairness of Web3 applications. [Original Link]