Quote verification

This proves the quote below is recorded by Citatio exactly as displayed and has not been altered since it was committed and anchored. It documents Citatio's crawl observation; it does not imply endorsement by the source platform. The quote links to the original review.

“Pass it on”

Checks (re-run on this request)

• ✓ Signature — Ed25519 signature over the record hash, verified against the public key at /.well-known/citatio-signing.json
• ✓ Merkle inclusion — Leaf recomputed through the sibling path to the anchored root
• ✓ Public transparency log — Sigstore Rekor log index 2670985056

Proof data

Record hash (SHA-256)

1124077c5557980ea3c25205cd7255135af74d0e9f2f289026222ca305328f69

Signature (Ed25519, base64)

bYpJ8v2k/B5NpzH3JpMItiB8KSAX6hUQz5KnQRo4cdAdToXZtHpkicSd+9LLyTFoj/Q17u86gdRJDoktOzOICA==

Merkle root

fe68a9ec2e6207dd1414683dd183944f75125b6c2562f0a23abbd81e00bcd90b

Merkle path

["1122da2ce19a87bda9882d603ea372abb0840a45d2f4ef842c98f303f47cc180","1574bae779b07a52f3331954223f51f6a0175c77b0dc87f25c91abbf4972a8f0","060f83520f03ae5d41ee4f120fa997c91dd6630a9bd7f61084bf543facbc0de2","0373a9df3609dcdf01c8590b43a68893d7f65dfda40957d91b6de14285572edc","114199b68ad5612bf0466343460d9fc09adc552af068d7a6aa244ab66af1fc60","27a7dfff3a99fac97e439f1e38a06a2456fb0792e9a75cfcf2baf549ff968ff8","e6ec4998b0581742ddd2889ba27ccf94a64e48f6da97a0071c1a0edad18df0c6","831e8420547d70db5990fa8f557b1cb0bfb73e757c5d1f9246d53768532a866f","63243d3dee2b65f81cd8c905bcac5b2b64e26fe7b066bc43f59419eb33611835","593e19f49413a34f9a1161b07d46c88a1c7460fe5e4bced4d72dfe4533694af9","89ce748d7575f44903fbea34de8090fa3345d207393470593ebe98cdba7c774f","45dd706bac2cc0332dcbe46778f23659c357900b7b4e37efa0060c038e10718a","93f00b982f24a21c93ad94f3b06a01239412d63557bf3cc0fc81e8815ff01fc5","6964472ff8161cf1d11ff1df4f1d4b619de3c1f553b29120f683f51838cd8531","eeb1d944996c95773acfae0ab38890a16747a23a572977c9c76e24b2581f0338"]

Anchored

2026-09-01

Public log entry

search.sigstore.dev, log index 2670985056 · entry 108e9186e8c5677a5868…

Expected log hash

a3256450b43380deb044f5248848190a4a97d9fd95427998eba3c6ad83d6bee1 The log entry's spec.data.hash.value must equal this value: the SHA-256 of the Merkle root string above. Recompute it yourself from the root to confirm.

Canonical record

{"dataset_version":"v1788232129626","kind":"published-quote","locale":"en","page":"theme:smallpdf/communication/en","quote":"Pass it on","rating":1,"review_date":"2025-09-17","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.smallpdf.app.android","v":1}

Verify in the public log

1. Open the Rekor entry (pre-filled with this proof's log index).
2. In the entry, compare spec.data.hash.value with the "Expected log hash" above: it is the SHA-256 of the Merkle root string (fe68a9ec2e62…), which ties this proof's root to the log entry.
3. Decode spec.signature.publicKey.content from base64: it must equal Citatio's published key at /.well-known/citatio-signing.json.
4. The entry's integratedTime is the independent timestamp: the root, and with it this quote, existed no later than that moment.
5. Locally, without any Citatio infrastructure: SHA-256 the canonical record (must equal the record hash), verify the Ed25519 signature against the public key, and fold the hash through the Merkle path (sorted-pair SHA-256) to reach the anchored root.