Check a delivery record

Drop in the signed .json file from a Delivery Proof or Receipt. This page checks the record and explains every result in plain language. No account is needed and the record is not stored.

No accountAnyone can check a record
Hash, signature and timestampAll three are checked
No record lookupOnly the file you provide is read
Nothing storedThe upload is discarded after the check

Choose the signed record

Use the JSON export, not the PDF. The PDF is a readable rendering; the JSON carries the signature and timestamp.

Maximum 1 MB

Checking…

Checking

Checked in this browser

Your browser independently recalculates the SHA-256 hash and checks the Ed25519 signature against the published key.

Complete record check

The hosted verifier checks the same record plus the RFC 3161 timestamp and signing-key service window.

Record ID—

Schema version—

Record SHA-256—

Signing key—

Timestamp authority—

Timestamped at—

A pass means the record is authentic, unaltered and was seen by the named timestamp authority at the time shown. It does not identify a named human; recipient verification proves control of the recorded mailbox only.

Verify without this website

For disputes, audits or long-term evidence, use the standalone verifier. It is one Python file, needs no packages, makes no network requests and produces the same check-by-check verdict.

Works offline

1
Save the recordDownload the signed JSON from the Receipt or Delivery Proof.
2
Save the public keysDownload the key history and keep it beside the record.
3
Run the verifierPython 3.9 or newer is enough; nothing is installed.

python3 verify_delivery_record.py record.json --keys keys.json

Download the offline verifier Download the public keys

Keep the record, public-key history and verifier together. The hosted page is the convenient check; these three files are the durable, independent one.