Ethereum News: Coders Push ZK ‘Secret Santa’ System Toward Deployment

Ethereum developers are refining a zero-knowledge (ZK) protocol aimed at enhancing privacy for on-chain activities, beginning with a 'Secret Santa' style matching system that could be expanded into a broader private coordination toolkit. Solidity engineer Artem Chystiakov highlighted this research, which addresses challenges inherent to transparent blockchains like the visibility of all data, lack of true randomness, and Sybil resistance. The proposed protocol uses ZK proofs to verify sender-receiver relationships without revealing identities, employing a transaction relayer to obscure the link between actions and individual wallets. Participants register via a smart contract, commit to a signature to prevent duplicates, and submit random numbers via the relayer. Receivers then encrypt delivery details using these shared numbers, allowing only the assigned 'Santa' to decrypt and learn the recipient's identity. This work aligns with the broader effort to design privacy frameworks for Ethereum, potentially applicable to anonymous voting, DAO governance, and private token distributions.

(Source：CoinDesk)