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.

“wichtiges Wissen länger behalten”
Google Play · 5/5 · 2025-08-30

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 3272785693

Proof data

Record hash (SHA-256): 2bf7998da8497b0322445c23536193e2f0154bd4662386926d23beb38fb74764
Signature (Ed25519, base64): 0P8ja7KXgHlFxfUcKHimy6NR34SPzI6sBkk4fjeFVlKRFRVD7lbtrL4fgdSXRxUkj4/aTwy/FKPDerALts+tDw==
Merkle root: 42ee8ba4b974d737f78b7f168d0af8ea0510697ac4ab4c6db44b5522bd195660
Merkle path: ["2bf8bc9e655457232612ed6c528f9e37d1cddec6e4acca0db26aab72807c831d","f16ae70aeec50cf8be8aea23a20da9550e632e9a54754debbaf6763bae4bd87b","dd1ddba3a0f7dbca774ff1a5334f36c58989fb9fab124eca950de10ac8fb9367","d8c2bf91f9613ed281616a2c64aaec0be8e9c9c66f319aa4767900ab1b2ec166","c24014d563622dba8b85743b0899c58b0aa9901876ac06b903d734b095646c54","b24e60fd4f727ea64a90d2cbb9998a581c034a24ba777f37a5e791648d6ba371","7bed0aabecd5b4fc9c64940c893d570e49d9939a9a4d1f91ee60a3754a8c2e53","d86a69f4472602a55660f84140fcb7f1fea83ae2a49b77560bcd0a450cfdcc84","8a2d6d510e0bf68b48b45fba95e3342457d70e9e94793d2472af18519575a9c9","c15bec133dcd4ef10b7c616d24091dc865f2275b937dff526b6f7efb8dae4af2","a2b46a1a793b32df1d1c7215f98613a95eb5843e284cc2bb9a43f7d9bef3a545","5f15fc19c161cf1b078cec1dbb446ebe0ad796b02ab5da46a3b86356dc6581b7","49dd732b74591111793e90f822c8febb6b4e9dba2f427a61f4d9f7035d4c82e9","c77ac7da32c6d4db47aeb73e606322601c1bed1566533de53bf56d1599928d0e"]
Anchored: 2026-10-16
Public log entry: search.sigstore.dev, log index 3272785693 · entry 108e9186e8c5677ad5db…
Expected log hash: 3b93391ec0595ab5c0ff73f2540eb1322f56c3c1302e6789c57b97c74423deaf 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":"v1792118508353","kind":"published-quote","locale":"de","page":"brand:vaia","quote":"wichtiges Wissen länger behalten","rating":5,"review_date":"2025-08-30","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.studysmarter","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 (42ee8ba4b974…), 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.