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.

“Sehr übersichtlich, keine unnötigen Spielereien.”
Google Play · 5/5 · 2026-08-09

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 3240911465

Proof data

Record hash (SHA-256): 13bf3ec238cb8838406f470845f5af9dbbbf1d17fb9763b6b52ad39ea1bacc3a
Signature (Ed25519, base64): JEaLGrttkqCClBF4OuoKGVe4JSRlgWv14UNuTJJZvTYiioX2Gs3bgeCsFOY4NGWWYdjAdtUVim9DacOG4QVRCQ==
Merkle root: 274a7762154bd166543ff3cdffd566852c7127b7d67c5c835965884725fa5b5a
Merkle path: ["13bf9a631003ddd8db9f2310e1ebc34569892e3fb09ecd15b1bbaa5888330eca","6adc047cdd45af9c1b96b72ac923993cf09c48dd5a329f6643ba5051dd973967","f0e11d369aecffa19cd657fc3312479701da627c60d1a7357faf515f45b7a534","c740bf204c1c96e090d1b4150ce03c02755a6601d1ffd4ca9719e1c901b58495","32e33206cf1aa4393ef2fdbebe5e6ac49e12da4f7bacf9143aacd4bbad5af296","ea6789eec4cd94de1aea7b69866e5d213d128bbc368e566a775ca3f99f495ed2","23d1b164f2dd245d632b8fc2fab4a88dfde811220502a6ef0a0b1ed1bd163b50","5073486a6b03561636a0e9fb378ffcd4590a7f45eba95784631a78e3650a224f","a21af4d84ee4c7e593618880dac158282d4f14a4e7b5b24bb33861b4b0b48bfd","fb03c31cd067fe9716c1219d8fd99ce6a51973e6971c08ca69a0b759279055a1","e7ab74a9aede1a4e45c46b0cf42345a6025189eb59192d0ab58a70c0f1fc9ee3","a23f8c34fe7234d1604529397f0f25595125771d2c3bf2e0ea04339b7ae798ca","37e0bacf6aea102741ccf02dcd42b0de6a02c60397ad417aaaf9cff69daaf006","29e5b66d9f235b4df92caf0fbc75cded7863ab76bbe1924bd45c3ed8fea27123"]
Anchored: 2026-10-13
Public log entry: search.sigstore.dev, log index 3240911465 · entry 108e9186e8c5677a3a8f…
Expected log hash: 75e63ac56a22d308ee68ec8d436777d2fa26c934f80384e53bcc94d01475e988 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":"v1791863907329","kind":"published-quote","locale":"de","page":"brand:threema","quote":"Sehr übersichtlich, keine unnötigen Spielereien.","rating":5,"review_date":"2026-08-09","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=ch.threema.app","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 (274a7762154b…), 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.