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.

“Meine Mutter mit 85 war zb komplett überfordert”
Google Play · 5/5 · 2026-07-30

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 2514083622

Proof data

Record hash (SHA-256): 5f424f91c5c692058ce141bb0d92f88980cb00e2dabd37d33f32f9bc86c9415d
Signature (Ed25519, base64): PEqGSn6e9SQ5GgLQZ0DvOuvXAOgaL7XyM61DznyXzLrxkrGHunzkTcCMzuQ7BXbKC0MWsm3H41eyX2ZztmanDQ==
Merkle root: c35385e3159410853b606ace3c93abcb561dc35874bbfae2272c5b0050f06a48
Merkle path: ["5f4014daee932592cbb4fed24db8a00178a954bbb8177c1434e873159ef5b78f","0d638d706cbd9ccfa58662d9e947aea18a77d22f8900f16743269f3e347fa815","15a6f71fea79340953447d0bd711706cce4079b02c0957ce11e889e8987def12","be17b1e2e085945729438c91680488d479d5521edee4938cba2c10067cebe2b3","92f3bf8006fdeb4a57e5eede6404b9086428399dc725954ff5c52bcf4e0f1476","8775f44451f83b8fe79654352d1fdb7c377be0634a14ceb42fdad8bcef5999f9","a6be3aaa3f36a506fb8e35154068b69a276328dcb7c490900784114f16a8bdc0","9c9bdf448c7d1b9c1eb31bde55c66091823008e07b8a6afca66abd3dba7593ab","ffa5135832389685d50da407ecd5f3d5be006244a2b7e517923035ceade86736","8f647bf351a9a6d9257c1fab67968757b9ac40cd4eb617f879abd52cbd6b5c8e","02dd5bbcbe0d921f9820e53a4da5ad31635601aa86ed293d10e016200d62f20a","8e5f57c1a2e96cf055d7b9737b78ff93242efff1ec17e65db056e13fb18c4839","6cc2706a4ceb9b9114520cebef77f34a5bff54a2bf14e315fba81a7635eddb21","eb865981e8703d40e97f7a1d500cef5e7bd341c0e720b4ca75d23312d5aa5f63","19399f0af13a2147dd8ceb83692caff2214adce3d49571e366dcfb3633df2667"]
Anchored: 2026-08-19
Public log entry: search.sigstore.dev, log index 2514083622 · entry 108e9186e8c5677a81ef…
Expected log hash: eb47f42546fcc705387579993679cd6250c0b995d01bbd10805cb4c8d66efe2c 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":"v1787123762743","kind":"published-quote","locale":"de","page":"theme:threema/quality/de","quote":"Meine Mutter mit 85 war zb komplett überfordert","rating":5,"review_date":"2026-07-30","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 (c35385e31594…), 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.