A proof is the saved result of a completed check. Keep its proof ID so your app can read its current status, share it, or reuse it without repeating the full check.
The API field for the proof ID is qHash.
What to store
Store the proof ID and the fields your product needs for access or display. Read the current proof before a protected action instead of rebuilding the original check.
contentHash identifies the checked content or artifact. It is not the proof ID.
Storage
Proofs are private and offchain by default. A blockchain record is optional and must be requested explicitly with options.publishToHub: true or targetChains.
Wallet-signed creates can also return a portable envelope that another system can check without calling NEUS. See Portable proofs.
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Last modified on August 10, 2026
