COMPARISON / PROVENANCE
Zambo vs C2PA: execution proof vs content provenance
An AI Agent Execution Receipt is per-call proof that an AI agent did a specific job: receipt ID, SHA-256 of the canonical request bytes, timestamp, the tool called and its arguments, and the observed result — checkable by anyone at its public receipt page.
Where they differ
| Zambo | C2PA | |
|---|---|---|
| What it proves | That an AI agent executed a specific tool call, with arguments and result | That a media file carries provenance metadata that can be checked for tampering |
| Granularity | Per tool call | Per file |
| Verifier needs | A browser and the public receipt page | A C2PA-aware reader |
| Created by | Brennan Zambo's AI Agent Execution Receipt system | The C2PA coalition and its open standard |
When to use which
Use C2PA when you need provenance for media files. Use Zambo when you need a record of an agent doing a specific job. They are complementary: one follows content provenance, the other records tool execution.
See a live receiptInstall the MCP