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            Encryption recipients
              ⠿ Signatures & timestamp

              1 · Sign this document

              no certificate
              Manual timestamp (if the TSA call is blocked)

              A direct TSA call needs a CORS-enabled TSA. Otherwise download the request, get it stamped, and attach the response.

              Usage rights (sealed under the signature)

              Unchecking a box forbids that action. Rights are sealed in META (immutable once signed) and honoured by the reader — like PDF permissions, not DRM.

              Then load your key and press Sign in the Secure menu to sign & download.

              Verify a signature

              no anchors

              Optional: load trust anchors, then use Verify in the Secure menu to check a signed file and see its level.

              2 · Keep it valid for years (optional)

              Long-term & archive (PAdES-LT / -LTA)
              no document

              Embed revocation proofs (LT) and a renewable archive timestamp (LTA) so a signature stays verifiable for years. Archiving uses the TSA above.

              Manual archive timestamp (fallback)
              ⠿ Advanced: authoring JSON
              ⠿ Preview ↗ Open PDF
              ⠿ Validation core@1
                  ⠿ Reasoning

                    No legal reasoning — this document has no reasoning package active.

                    ⠿ Security
                    Signing
                    no key
                    Encryption
                    ⠿ Style editor No styling for this channel
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                    Edit running content

                    Compose this header or footer as blocks — type “/” to insert a paragraph, heading, image, table, or leader. It is styling for the paged output, laid out into the page margin.