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.

“Professionell, sehr hilfreich, übersichtliche Hilfefunktionen.”
Google Play · 5/5 · 2026-08-12

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 2515243153

Proof data

Record hash (SHA-256): 7cbd1821e28b8bedede4c7d63ce6957da529da5df9d6fc8dca1d276fe37643ea
Signature (Ed25519, base64): ifRx+LDs8sHYxGVOzsSjPgLBrV1W2x6bwNwe11dCYGKwbUQ76IxjUF15ODKl7bWc0ZbepIi39HpVndgxJqCRAA==
Merkle root: 30b81ce96f52ff8c37a1dce6a2cf1045c2f51663c1ddbd5ca071d040e32c05d6
Merkle path: ["7cc2167e5b0570d7baaf8493a0278c4980c2d2000b26e2eb74c75f3747a1aec6","acc65c31f486861673d24af8d6cdb7c021c4a177d9df3fb1c22a24f5230673cd","7ecec83915cff9e6dd8d513d6c1005e605085875ad4d698c28cd705a1669eae9","715af1f5230fb210ed9d98bcd6ea0a2bf642245eff383aa1654f3ba12b50b2d2","b707b271ecaa150f75188342886a95f75a8874b1aff7132d5fd31cff840f2c22","f92477c6e3108294f8e0ab8c9294880370ea51ede4aa69c1559a4ecb4dab351f","44124f9666a0791a4ede621346de445ce43c8623f371fc81a31ddde85e2aeed0","91b67dbc1f7f359fb7e65e4456417fa601ec06bc34e9b106b7f8f2e33f11b895","8fb2752a09e65714e51fdbf0a228c7aa179397cfb1d55aedf396a3cea93b2e2f","a7a7fcd3e7dc708a275116d624fa79fbf68f86e87428ea6f6708e14c7ce95d36","0b89138ed4561a66410079dfb0dc2aecd27a87bba165207ef1134d2212325f30","0872621d16210dafd55ebc910beb30ac16999c23b17abbae8f9cebf9760862c1","0afb56aa9b1dab269e4d7e686a093b4dffdbb488bafce3fcc9dbafc5813d2f51","7b80345d7bd213081fa8cbef47938ae80dfc899b90d35aad15f2a6c5e9b16063","dd9b0a9d584b044c4116e1c10c4b8cf4a06383a771a07c9f3d39f998f23cf36d"]
Anchored: 2026-08-19
Public log entry: search.sigstore.dev, log index 2515243153 · entry 108e9186e8c5677a8eb5…
Expected log hash: 314ca716b1ad71ca29fff6da960e81a719fe30fa5fc14d8646acca79a7c09353 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":"v1787138594002","kind":"published-quote","locale":"de","page":"theme:acrobat/service/de","quote":"Professionell, sehr hilfreich, übersichtliche Hilfefunktionen.","rating":5,"review_date":"2026-08-12","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 (30b81ce96f52…), 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.