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.

“Beste Nutzungsqualität”
Google Play · 5/5 · 2026-07-10

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 2621523249

Proof data

Record hash (SHA-256): 16b29a8355b23bcb834f088e320bb30e7ed03b8ff8cdddb798bd01cfc33c39da
Signature (Ed25519, base64): RHd43RTDAIt2N5nR6v2rnBu7qVNnTkbvdJOU6gzzo0XJqN7KEIDXOvA8H6Qc6Rx4Z9HRCVmvuhFxTwZm8azlAA==
Merkle root: 6471d9991f0d0aacdf442d5cfa660f2886071005e4c3d26a992a3bf38f0a7695
Merkle path: ["16b2a2ff18ef8c6f3e8c191d256f329e6e8f67c0d011b0d5c5b273158c78ddf7","b14e827bfe687213c9a0b7dcecc20bf2453ebc9ffbf19a05ff4b2bb349fbd505","f2c62df399547a33fa06625714425e73f0a541275b5570e59ea7139a5982be3d","74c95dd228f7520296b1ff413a7fb8d347722bf532f7967ff0bc6e736e227969","8985f23248c92a3785a66e44024cc74e45b4278a9a117bba4e51798f959e8ce6","18a5e1d10a34911b664d85037078fe74927cd37fa2feb3d2538127b8d40c4f63","5c9e257964f00e877b0159a9ec645d0d9a4e73c06aadf1c824b2ddf12a388683","39fdaf6330cb184dada0166f881b878620e6b8173adc2b3c5d025355720072ef","32d47a0d58edbeb859c343c898f183fe252fdf1b8d603b23332cfadb78ef9d3d","eaab9df7b4abed3d99ae65879cafa519b5b43091a73ebdb2829169dcd0d1ff6a","39611481640730b1b5b18beb7cf86e0d44eadb01d20ae3ae4c61e20a199593ee","3b30f3c4384c8f930b0902f0837c734e0f4d8aafe820711619a733e25c756cca","f3f4254b899098b98c7590d670f5fc0f992a4df0218d6bbab4ffa5ea42255835","930b7277e2ba0f1d182f8e7d0daf885f1526e50b29d8791024858ea5581e285b","a2fa997090d23b1f352d383369eee4da3a6661cb0956969a3a99ec5f82390d95"]
Anchored: 2026-08-28
Public log entry: search.sigstore.dev, log index 2621523249 · entry 108e9186e8c5677ad576…
Expected log hash: 644ce1c7a13e9edd388468f8e29bb74f49a15185930851951709e16eaf23744b 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":"v1787888369667","kind":"published-quote","locale":"de","page":"product:acrobat/pdf-editor/de","quote":"Beste Nutzungsqualität","rating":5,"review_date":"2026-07-10","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.adobe.reader","v":1}

Verify in the public log

Open the Rekor entry (pre-filled with this proof's log index).
In the entry, compare spec.data.hash.value with the "Expected log hash" above: it is the SHA-256 of the Merkle root string (6471d9991f0d…), which ties this proof's root to the log entry.
Decode spec.signature.publicKey.content from base64: it must equal Citatio's published key at /.well-known/citatio-signing.json.
The entry's integratedTime is the independent timestamp: the root, and with it this quote, existed no later than that moment.
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.