Zero-Knowledge Age Verification on Midnight: How Compact Enables Private On-Chain Data
How do you verify user eligibility on-chain without revealing sensitive personal identity data? Traditional KYC processes force an unwanted trade-off: transparency versus privacy. Exposing dates of birth or identity credentials directly on a public ledger introduces severe privacy and security risks. Midnight Network solves this dilemma through a clean separation of Public vs. Private State:…
Midnight Network addresses privacy concerns in on-chain data verification by separating public and private states. Public state on the ledger only contains verification status, while private data remains on-device within the user's wallet. The network's Compact language simplifies the creation of zero-knowledge logic, enabling developers to write age verification functions without intricate cryptographic circuits.
For instance, the AgeVerification contract checks if the difference between the current year and a user's birth year is 18, then updates the is_verified status on the public ledger. This process occurs entirely locally, with no raw birth year data ever leaving the user's wallet. Cryptographic proofs prove the verification without revealing sensitive personal information.
By abstracting complex ZK mathematics into straightforward logic, Midnight allows for privacy-first decentralized applications, revolutionizing data ownership on the blockchain.
Written by urgent.news from Dev.to's reporting — not their text. Machine-written — it may contain errors, so check the original before relying on it.
