What this page covers
C2PA can carry provenance in media. Attesto helps preserve the surrounding approval, custody and verification evidence.
Evidence question
C2PA Metadata Checker answers a concrete audit question: what must be retained so a third party can verify the relevant event chain later?
- Which event happened and which system produced it.
- Which policy, model, supplier or human approval was active.
- Which hash, signature, Merkle root and verifier receipt prove integrity.
Attesto proof layer
Attesto complements GRC, SIEM, storage and workflow systems by sealing selected evidence records instead of replacing the operating system.
- Raw data can remain encrypted or customer-controlled.
- Proof material can be shared with auditors or customers.
- A verifier can test whether a record still matches the anchored root.
Interactive evidence tool
Choose evidence records
Tool result
C2PA metadata is stronger when enterprise approval, custody and publication workflow also remain provable outside the file.
3 evidence area(s) need deeper mapping.
This public tool is directional. The full PDF or technical evidence map can be requested through the wizard.
Legal timing
C2PA is an industry provenance standard, not a general EU compliance law. It becomes commercially important where organizations need to prove how media was created, edited, approved and published.
This page is implementation guidance for evidence planning, not legal advice.
Evidence Attesto AI can preserve
Content Credential manifest
media asset hash
trusted timestamp
human approval or override
auditor verification receipt
Example evidence records
Example proof receipt
Example Attesto receipt
event_type
C2PA_PROVENANCE
timestamp
2026-06-04T10:21:00Z
leaf_hash
sha256:8f41...b19e
merkle_root
sha256:52ac...91d4
anchor_reference
attesto:anchor:2026-06-04:eu-001
verification_status
valid demo receipt, raw data not exposed
Where Attesto fits
If metadata is stripped or disputed, Attesto keeps independent proof that the enterprise workflow happened.
FAQ
How is this different from a normal log?
A normal log asks an auditor to trust the system that produced it. Attesto records hashes, signatures, Merkle proofs and verifier receipts so selected evidence can be checked independently.
Does Attesto need to expose raw sensitive data?
No. Raw records can remain encrypted or customer-controlled while proof material is shared for verification.
Where does C2PA Metadata Checker fit in the compliance stack?
If metadata is stripped or disputed, Attesto keeps independent proof that the enterprise workflow happened.