The Zero-Knowledge Trap: Why ownPublicKey() Cannot Prove Identity in Compact

📰 Dev.to · Harrie

Learn why ownPublicKey() cannot prove identity in compact zero-knowledge protocols and how to avoid the zero-knowledge trap

intermediate Published 23 Apr 2026
Action Steps
  1. Understand the concept of zero-knowledge proofs and their application in blockchain
  2. Analyze the ownPublicKey() function in Solidity and its intended use
  3. Recognize the limitations of ownPublicKey() in proving identity in compact zero-knowledge protocols
  4. Implement alternative solutions that can effectively prove identity without compromising security
  5. Test and verify the security of the implemented solution using zero-knowledge protocol testing tools
Who Needs to Know This

Smart contract developers and blockchain engineers can benefit from understanding the limitations of ownPublicKey() to design more secure and efficient zero-knowledge protocols

Key Insight

💡 ownPublicKey() has limitations in proving identity, and alternative solutions are necessary for secure zero-knowledge protocols

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🚨 Zero-knowledge trap alert! ownPublicKey() can't prove identity in compact protocols 🚨
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