Proof reports & the preservation certificate
Export an auditor-ready certificate whose proofs anyone can re-check on-chain.
A preservation certificate is the artefact you hand to an auditor, insurer, or board. It states what is preserved and lists the on-chain proofs behind it, and crucially, it can be re-checked without trusting Velic.
Generate a report
On the Reports screen, choose Generate report for a master, then Open it. The certificate, titled Certificate of continuous preservation, lays out:
- Identity: master title, file, stored-since, and copy count.
- Headline stats: share of proofs passed, duration, and proving cadence.
- Recent proof records: a table of date, epoch, and proof hash.
A footer notes that each record is an on-chain Proof of Data Possession taken against the master's PieceCID, and that anyone can re-verify it on the public Filecoin chain.
Download the PDF
Download PDF produces a self-contained certificate document. In addition to the fields above, the PDF embeds everything needed to verify independently:
- the chain name and chain ID,
- the PDPVerifier and Filecoin Warm Storage Service contract addresses,
- explorer links (Filfox and Beryx), and
- step-by-step verification instructions.
That makes the certificate self-describing: a recipient can follow it straight to the chain. See Verify it yourself for the full method.