Scope fence – read before use A PASS verdict on the manifest proves: the file matches the matter-manifest schema, and its manifest_digest recomputes correctly from the manifest's own content (JCS canon, manifest_digest itself excluded from the preimage). It does not by itself prove any bound artifact is authentic – bindings[] reference existing runs, evidence bundles, approval records, and attested artifacts by hash only (§3 of the spec: never a payload copy), so this page cannot independently check a binding unless you also hand it that artifact's own JSON below. external_reference bindings point at content Helm never verified at all – they render with their own distinct amber label, never green, and are never collapsed into a “matter verified” badge. Nothing on this page ever opens a network connection.
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Step 1 · the matter export (manifest JSON)
Paste or upload the matter export file
Drag a matter export .json here, or click to choose a file
Step 2 · optional, check one bound artifact against a binding
Paste or upload the OCG artifact JSON a binding above references
Only needed if you also received the underlying artifact. The verdict below only ever applies to the ONE bound artifact you supply here – it never speaks for the other bindings.
Drag one bound artifact .json here, or click to choose a file
Step 3 · optional, verify a closeout export's e-bundle PDF and EDRM DAT
Paste or upload a matter closeout export (matter_id / predicate / envelope)
A closeout export is what helmd emits when a matter transitions to closed – the DSSE-signed predicate carrying bindings_export plus the §5.1 e-bundle PDF index and §5.2 EDRM DAT manifest, both derived from the same bindings and signed with the same envelope. This step never trusts the outer JSON's convenience copies – every check below re-derives its answer from envelope.payload, the actual signed bytes.
Drag a closeout export .json here, or click to choose a file