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.

“Es gibt kein besseres Programm um PDFs zu bearbeiten!”
Google Play · 5/5 · 2025-03-16

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 2514967984

Proof data

Record hash (SHA-256): 6314751996339124eee800ade20d9e6476df415ba5ec9ce44cd9bca33d41bebb
Signature (Ed25519, base64): xgoBe6Xd8X78OxFvKsL3bbS6JVK7VVGWteEtyRZTyrlgckzvJ8uw+VoBMGp862v0DH+eId+k42+D3hR31qe4DQ==
Merkle root: 9ddf6b9053b6e5e7a2f15ee7f3bfc8dfb72c48a1917ae5b7e553033e3ded6523
Merkle path: ["630d0013808443d72eefb3b9fe1a501e9ae5c8c54c24e28268a028f220f401dc","a1252cc7c24446dffdc91842354d13ef48a2dae2dceb78987127ad8584496159","87f2bf83fb30d120b1ff52c0c1d87f7e6d6a6919ee12875ec2923776d5a25bea","5ca6c3f4a07463cd679c4c31b8f403f4310e2576e85022a04155e3893948da18","31dabdb7ae6b27cd6ef25753ef697355314fc8879b91982af29ba5cf695c5639","6706c17996472d4b5e1895668c3e761aad14aeb7d5c51b9feea1377b507a66b1","43b44ee9907efcac6fc33d3e18486bf11aa65db1d5ea36b2545b9960713f3537","f420097c884a8afee602055b6ff321be00787d9f1d4691eb514e156167f1840b","713037c0c49b56884dfb7cf0262db32da9774ad01c7a6e8bec6d176b55150643","a49c485edae3f18fc9028799ee439de0c8568b9af9b6a6be3ef3acc9b280d1ca","1c0b25bac6c7fce446c9b131c10096bb54f6a6abf30bed5b4e0c1f9a8f7e073d","2b6dee3749b82f13b3b8a641bbe3341e0b73743d28edcad040b0254dae05ac25","a21260a3b3feca1d6975bcdc8cefc8114d0a842f3a7e63f8b9f1b1daec35bd2a","ea40ae0189ccbe6f115902554a87d5a76ecff9d4f22c2848cf6df598f3744e11","50c4eca268fbb41f8c6bc36d8a5d1b6cc09733d96f0fb33e6cb584096c56f695"]
Anchored: 2026-08-19
Public log entry: search.sigstore.dev, log index 2514967984 · entry 108e9186e8c5677a902c…
Expected log hash: be0cb34bbab326d10b25013c37c9294b14554a6c6e9fac3dc68c06dc2c3c60e7 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":"v1787135269737","kind":"published-quote","locale":"de","page":"product:xodo/pdf-editor/de","quote":"Es gibt kein besseres Programm um PDFs zu bearbeiten!","rating":5,"review_date":"2025-03-16","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.xodo.pdf.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 (9ddf6b9053b6…), 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.