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.

“unrechts und böswillig, denn die empfangsbestätigung der Kündigung liegt vor”
Google Play · 1/5 · 2026-02-26

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 2904877428

Proof data

Record hash (SHA-256): c6bf6ee53139413135db0df6142cc651abbe5d822c44a9ba965fa2a84f84c4ac
Signature (Ed25519, base64): MOIWP/KFoJM65ftY7p/cLKogGs1S/UOVsU7hdstxlFb3OHb+IAMU0fExtP7UGBC1sqnvaJZtCEdZdYFDLNzjDg==
Merkle root: e299bf38720a5a91bdf63bbc0205245bccdf3432ab1652c69342549658b7a9ef
Merkle path: ["c6bd0d4178363e049f415c0224f658b460ba66ad751911d5e79f7c79e296f3f5","483a72d04a3fb2fd0768006d9efd5e0a0a4b64e015dc6db067bdf06c8695ac8c","9b2e286fd6a3418a0bceea7251a694053212071928364da14eacaee5af3a121e","38ec2a22c5ad61922733933e7928dc04d9d1dedbd16e533faa512b8176e961e5","69f2d281739c88c283a2280ba6b1e4816bcd6df0a19d5419830cd150432330a9","ece88ac6d1d7d7402db637ead4d98799c91bfcf15bd5e885a4021203eeafefbb","3cde1a8b1bbefa43d74fbf45dd9542e3994260a32558e753b5b51d42d486a313","7102d6c759732b2425d1f379f544225a264b0ead415221bc3a4cf6e1b685270a","731d17162a08ebdd6a432210a53fd6ce353334fa8dd01430baab09d561d4d011","1be6300f4de405a747f7e363d932d28150c92bf4b0e69c1d57aed29293b15db9","c76744f61713b161c2df73a6eec773c0acb500654c459ab09b4f8ebb3ba40f92","1b051bf1ff36589fb2c3614b917f0b7f052e466f644868f148d61dc06ad499eb","06f94171d32c86f72a9e1d984f2a7c3fa7bd9f00a98eabaa3fbd7d57db71aaf2","e3714293de39ce3c6e3cb9d5ea7711343b19d2be532c75504682d8ef52e8f91e","2a462314156907e42d6f0d96eed96123f1d79516aef73ed189d9f5466556b638"]
Anchored: 2026-09-21
Public log entry: search.sigstore.dev, log index 2904877428 · entry 108e9186e8c5677ab408…
Expected log hash: d020708737f55ccdf49203f373fcbcefe8158cc388605556fbfda3c365de7360 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":"v1789881486272","kind":"published-quote","locale":"de","page":"theme:vaia/billing/de","quote":"unrechts und böswillig, denn die empfangsbestätigung der Kündigung liegt vor","rating":1,"review_date":"2026-02-26","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 (e299bf38720a…), 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.