C2PA’s center of gravity
C2PA focuses on assertions and manifests attached to creative assets — who did what to an image or video, and how it changed along a chain of custody.
ZK-SNAP vs C2PA Content Credentials
C2PA is a strong standard for content credentials on media. ZK-SNAP is a receipt primitive for verifiable machine activity across files, datasets, agents, and infrastructure events.
At a glance
Side-by-side
Educational comparison — not competitive marketing.
Aspect C2PA ZK-SNAP
Primary asset
C2PA
Creative media with embedded assertions and manifests.
ZK-SNAP
Machine actions across files, datasets, agents, and events.
Proof center
C2PA
Content credentials and chain of custody on the asset.
ZK-SNAP
Receipt at accountable-action time with offline verification first.
Verification path
C2PA
Manifest and assertion validation on the media object.
ZK-SNAP
Cryptographic receipt check; optional on-log recognition (S5).
Relationship
C2PA
Strong media provenance standard.
ZK-SNAP
Portable machine-action receipt — can compose via bridge artifacts.
ZK-SNAP’s center of gravity
ZK-SNAP receipts attest to machine actions when accountable events happen: create, transform, approve, command, settle. Verification is offline-first (Sigil S4) with optional on-log recognition (S5) when governed Chain evidence exists.
Composition, not competition
Bridge artifacts can bind C2PA-compatible material, Verifiable Credentials, and DIDs into the same receipt path. The receipt remains the portable proof object; external credentials ride inside it.
How to evaluate in practice
Use C2PA when the primary question is media credentials on the asset itself. Use ZK-SNAP when the question is what a machine did — agent action, dataset transform, command, settlement — and whether that action verifies offline. Many production stacks will carry both via bridge commitments inside one receipt path.