ERC-7857 defines private metadata and proof-based data operations for AI-agent assets. It does not inherit ERC-721, although an implementation may add ERC-721; actual functional data stays off-chain while hashes and sealed keys can be on-chain. Transfer, cloning, and usage authorization use verifier proofs and may involve a sealed executor, so access is not automatically owner-only and ERC-8001 integration is separate.
Stages: Specialized Interactions