ZkSync’s airdrop KYC requirements, like linking Google accounts or Gitcoin Passport verification, aim to deter Sybil attacks, ensuring fair token distribution. This enhances compliance with regulations but raises privacy concerns, as personal data collection clashes with crypto’s anonymity ethos. Participants face a trade-off: KYC boosts legitimacy and security, aligning with AML standards, yet compromises pseudonymity. Zero-knowledge proofs could mitigate this, proving eligibility without revealing identities, but legal mandates for data retention limit their efficacy. Balancing privacy and compliance remains tricky, with ZkSync prioritizing integrity over full anonymity.