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 2513802575

Proof data

Record hash (SHA-256): 65f566f67d4654a4a21d0b9f98159ff4389084ac55a0d4d90e4f431b846467b7
Signature (Ed25519, base64): pInIuplxjvBcftNifG2UoMsofpRW2Oo2pshQsGqdyEkwSP1sHgcUTvSGB+dP6xFuTTF82mrfGwAm8FDRTeuWDg==
Merkle root: 80de158564b7616572ca0c0059561f6ec90cd5bce49a388e61df989f3f6f2a86
Merkle path: ["65f5231ca00e01802dc41c0462988c4dcedc2217049993d0d27ab54c2c72f6f0","0383587343dfbb0f055c3b9b42084c46a94d08b401e5c7a9ebca0c49f4153151","1e2879ddf68384d534c219af66e0c6c3cfeb5be93be55438e6776e5585432678","aaea3bc79025208e72640c5d09c6961f548c3f3f40bba4deedd48f7725828b61","408403dad321f7168fdfd9918ece0b18f4311ccf990e7c7d92b3d251740c4f7e","0d3cc477b8e32fc7db29cfb8c23d0af3fea290db7f3de17d8cd91b81305f0af7","15608994f764accfe213aff95fb9a6019ebab406be14d9202bad4b3a887406b4","693f165e1cf01af369d514b6fb053ffa8dcc54ad2ce05e779e75e8033310d15e","40637605fe7527757858bf15e7c00c7dcdda3dae696d0fff2af50242164bd2fa","985a75d818e9245ff6871c39a508f5c104992518a69cd60130670e434fcfda64","b02e4791599e4ed3f86f31fe77c3d89281957363014bfd7cb4bad081366c2891","fb884b13c6c7b6fa45ec692f0cd19450269fcd13629216d89df8f4f8f28f63db","4030647c2ef4f8e3330609d1b1b8f3b58008674f60e870e605f772c875dc6aa9","3492e7b3aa9fff62b956cd07fc3f980ebe20033aec60bffc5a515ff87c949351","68889fd35b89925b8d265e65260618471cd9c2f5458718fde3d6cb3829d8f00f"]
Anchored: 2026-08-19
Public log entry: search.sigstore.dev, log index 2513802575 · entry 108e9186e8c5677a9216…
Expected log hash: 5899b5d0ea18fa3c879147333708054c2e3cd77662f2b6f633aa3b5d5512bbe5 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":"v1787121142818","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 (80de158564b7…), 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.