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.

“The backend can only process individual PDFs.”
Google Play · 3/5 · 2026-07-02

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 2893887498

Proof data

Record hash (SHA-256): 9758a29380d91b2a1034b0ff0fa82b1ce1c0966a6818cc5528a7f20b49ccf0f9
Signature (Ed25519, base64): NvwYazLKAyqXkuUBmR76cYecwvcc9JRy1seXMJWAZwtLmRrvud77CbtAGqDXRBnHSm1jHVXe87xcSDL/i3PzCg==
Merkle root: 2f068f3de56bebe7a575ba4a979c9244445d2350140e36238e088fa40fbfdd88
Merkle path: ["97591665bbbd7ecf9637ecf65870e55e7eb49712a923f8e2910540abdc2fe8a3","ceb584a2f5f13ed57350707b9dfddeb3fc9cdf01cee6a2b22d57bbe5f8717ba3","9684edb26b25748f4340bfebf5902a93d91b9c3b9172fe886835d1a337b8e6e2","4d35ae931e5d8d31552f45df226aeb2450b5b20436dfaa9ab244cf71baf8ff65","dfe41b58871d5fe514039dbe769bf0112fd237c7c02f8a2fd7d3642e564fb6f3","61ece28f9ec47b1dc32dcf267c3d4cc12c1f8715e8b41de4838a750dbd3e117d","2a8da3a3673dad5bf3e16a569700894973fbff02fb6380d15f53943224c99c03","8c459771f4df7b8a54e0a6327dff80a9b4a5446a8de7bd167de825e3a8e1f46d","fc3e0b7c62c2e51daf4ac8151c095c0d97d40abb00d4c2cd4b48cfb26f6c5738","d5757b3f14eddec1a63446afba47a4013316446391a57df432171bffea08a3f3","6900195e4203d1c8cd26c13eff44866a664af0e306b06dc11a266a9357e24fbe","c22fe83bd144008efb96895e17f4e6f8919a56dd8220cca85f3aa44cd67de0ee","27978d996981aec54e7305bc9bddff422c8ed02487f8eaef12f84d0b2ba90b9f","537f00dd60bfbd8c049786f7eae4da8a735af5b60dacd3bc1b6054b8ac3175e3","58a3dfc9ad8696e92f5fc9960e9c6bc4cc04e270091b574a948593298b33d1f5"]
Anchored: 2026-09-20
Public log entry: search.sigstore.dev, log index 2893887498 · entry 108e9186e8c5677af79f…
Expected log hash: 90099e0300c6e23b62e79318296ebab91bff130379d248ada57f044f77e72ccd 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":"v1789796056710","kind":"published-quote","locale":"en","page":"theme:concordia/quality/en","quote":"The backend can only process individual PDFs.","rating":3,"review_date":"2026-07-02","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=ch.concordia.myconcordia","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 (2f068f3de56b…), 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.