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.

“Die App zeigt mir plötzlich für 90% aller Threemakontakte den selben Namen einer einzigen Person aus dem Telefon.”
Google Play · 1/5 · 2026-08-08

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 3198797320

Proof data

Record hash (SHA-256): 15c2f08057f810baf4aa473605610041845fbfde05288f5dbacb18c76c8648e8
Signature (Ed25519, base64): IVZVbP2FYsOF11yB6yOQmeu4wYxw90q7yQeIxcqCCTpIIGjJXn3ox0IbpkDiHKnTrzFnupKVSAyHKHeTE4mWDA==
Merkle root: 199738dc68b66dcf66f6b0cc77e2cba74c3bfda88989684620837b4c4e64818e
Merkle path: ["15c3e555ecec2fdb0de85a6a52b78c3de8b4f103d24e2852bf69976b60c240fb","61c4164aa0b48f7cd4cd3ee88fc298ba6f0ff31375454344100ade975e6f009e","fe391da68d9828016744ef1a9f394769a25addccf643c36c8f33817b40ab6420","b640908868bbdd0e639316118c7513d767894247be7c80908e4d82cf2f7bd2f6","c1a94bf18b0642ab8cac4369d8aab98c7c660abb608717792cd699897c2a5c58","3b2497a204a624ed7515604e18a7ff59544b33ae2e823cb95bd6814dba653dd6","0535145dca59d8cb8c98079855ef66edd29867d0d7ae9c739c2ccbb35528bfff","d284fa2dec46d935a7614217a07f5d3a1be847d2c61fcca4b146f2c0228df8d4","31a525ed3438a8c9b94b2ce3215b132052d3adc41f6bbda660834ef3e22b4ced","e7defa53ab3603b7c4ed675413c2ba2dfd2f2d4cbf1d47965182f3ff1d79f710","237d92539dadc5c229398abd4613f475072d6788bd28bacee8b5bc01f400fb10","86433dc4e5776691731438e65de2d710dae3d65c747d632e0e4f67a92455b646","89c2d1ad10f8da8a1ced326bfbd1f55882866fd705571bc337258b3314dad42f","ddc8a66e59fc8f0934334cf08e419f621290129e658cbc58d8ec27bafd90b0af"]
Anchored: 2026-10-11
Public log entry: search.sigstore.dev, log index 3198797320 · entry 108e9186e8c5677a14ba…
Expected log hash: 46227e67415cdf5b62c43420eb8b7a80b35acaa912410c2711787f678b77c9c9 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":"v1791687727006","kind":"published-quote","locale":"de","page":"brand:threema","quote":"Die App zeigt mir plötzlich für 90% aller Threemakontakte den selben Namen einer einzigen Person aus dem Telefon.","rating":1,"review_date":"2026-08-08","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 (199738dc68b6…), 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.