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.

“Can do way more with it than with acrobat reader”
Google Play · 5/5 · 2026-06-16

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 3247778771

Proof data

Record hash (SHA-256): 135caa81ef6aa0c9f8e7b071121a6eef28f874c1a291102064889bb5811dcc34
Signature (Ed25519, base64): SusL/ftK+J9k2E1gQ22FHeO9Q3FPG8Mg9TESJJqzn21O3f8HhW9iMQWfJji0C056TdGstm7sG5BS7fnceHyhAQ==
Merkle root: 85ce153ffacf452dbbce3fe1023cf2b1831b0714a52ddd4756cd932ee6118eca
Merkle path: ["135dd385a5687642fdab2967ee3da60cb4a3b28eddbb6bd356c8b8f82633fa8d","d4e371be9c247de113bd55b94ea9df3bad7619850b41d6cbeffe6d98b6e970c2","853397ce2cf9218c6d3d839c13b4d6b08086705f4e2291014de14039506383be","e1c04c46905213b6f0b877aaade22d73cd82914146e73877eddabcd5037b98a0","36e737d276ba414c9109967cf3a416807dfb5b6ce210111b95f0759169f72c3d","e16a9195e9c6965fa28f668506a27040aa47dbab6983d1e1d1ca7d06f523cbec","7b19550347314f78c08a09ee71bc72083ad63f2fb8301b13211b869d1e2ed48c","0d22f0884b61032ce335f65acf7584e81a8c17a5c339515d810df64b39697771","439ecdd5b7a646dfa199864ed6df87785e188f592e4ef6fb51093fc51e1b5391","68c455ff22a3ccd906997c0b12714017662ce15aea34386d62bdd3b62fc2f81d","4aba4c8ff1de29ad0b7aadee5c2e476818f79748c266e2c70c52fb9d0ff85fe7","6c2e1c6197efd563c8b55fe8aee10bf08687b45dabbbd2a77d804d15e7fc26bf","18b18f071e9c71d8c36d555f1bf037316eae5e015564bc049869377ca5d7af3d","18e09dc9351f249cc916f25a12a638ff411aa18455e8056b5bab6122f75e7984"]
Anchored: 2026-10-14
Public log entry: search.sigstore.dev, log index 3247778771 · entry 108e9186e8c5677a205f…
Expected log hash: d4527e154b8f284d35adc456cc8f260840ef237a57e84e3d79bf64cab7ccc901 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":"v1791943580112","kind":"published-quote","locale":"de","page":"brand:xodo","quote":"Can do way more with it than with acrobat reader","rating":5,"review_date":"2026-06-16","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 (85ce153ffacf…), 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.