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.

“Im Grunde wurden mir 95 Dollar für einen Dienst berechnet, den ich nie genutzt habe.”
Google Play · 1/5 · 2026-01-11

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 3082153890

Proof data

Record hash (SHA-256): d91c7ac0efa4b14a4aa7df15966409a6bdc1ead4f0231f3807c151ee1d8de703
Signature (Ed25519, base64): cl5e1ElVttOirU2ktEf8e7Bd0MAvoPagepgBVNCafZTz9F9dejWRyDkqk0S2H2G281nHVmFJ5QfThcarcXm4Dw==
Merkle root: 400ee8bc8bb6e48ec8bd5ac7598e893e5cb7545daceec4f0578b6b1d061e7911
Merkle path: ["d91c94ccc17ecf571794357131b3e6588be5036e0ab6789c83512eb187cf4933","d52f3772e18d570d0d48bf93261b9f30dc54f2635d71d0d5b0bff4cabd19250e","59bba3e8241a5011cd6677853cba454cec0c278bd9decfaaac63caee84169e5c","87870f56d740506650beab5524c4bc0126cd5a2947aaad32ae133ad5d63ff8b9","bfc612eecc951c3fa1c234247d2ad96bc608b3e435fa4a9fd3bbc6938eef16f3","c8ab23e8b952e07b238a11b699e345362295927f6d0f2d5863a384d12a64b215","80d53ff870f4fb2d1eee5b4240ec9cd0480a669bad51a97350851a991252cd9f","2370a5ab5e3127d4159b4c36f5abe02167ca236b71c2cc10dc24dfdfe0d31389","80eed91f58b6c31a6b706f0057519e1fa7d4a9114861186c6be6bb9a088e3cd0","96849a2aa2b5c2a9343e9b72ca5c60942a2368120177ec1a4767a125c5325ac4","4939b74045bf3efef68eedf01bebd65808527cd8e8f55bb4673dc8df748fafac","400fbbf73610e84d2f0e149326e87d0a812b2ad4ae0713aa5111d8f7646194e8","ed96bacb6a753568e65408a83a42ffd2ff7e7b32430b79135ee948fb395ae60f","5b29d93873c30f07ca2c717da52ee52806856b3ee1063db3f502e4e0b241fd1e","02d2fd729874a4045685c92de04d21af3989963c78ad36afea7dd3264421abb8"]
Anchored: 2026-10-05
Public log entry: search.sigstore.dev, log index 3082153890 · entry 108e9186e8c5677a31d2…
Expected log hash: cff4076b1696aa395d1840cc38c433580d1b7821d298d64e1adff5db6503370b 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":"v1791175845570","kind":"published-quote","locale":"de","page":"theme:vaia/billing/de","quote":"Im Grunde wurden mir 95 Dollar für einen Dienst berechnet, den ich nie genutzt habe.","rating":1,"review_date":"2026-01-11","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 (400ee8bc8bb6…), 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.