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.

“Unverlässliche App, die andauernd laggt und abstürzt.”

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)

c9ece4847dc52b6d1dce7034ecb355bdf3532e80e2904a095b0e87f15c728cde

Signature (Ed25519, base64)

wDq9+TH9r59kq6Sdz/7BY4i4AbyXbhVrLuDbkcpt4uHQB9dTICi5yyrwlEP56Fu6TSRs4TZsXxrHE0f9MOfcCA==

Merkle root

e299bf38720a5a91bdf63bbc0205245bccdf3432ab1652c69342549658b7a9ef

Merkle path

["c9ed2df0d8a5ecb6312d87646266b045225066b31380d0c8bf7152cd0d381eae","f6da02a94db2354326c437b750e11069bd8d3bb912061b8ea451b869376acfb8","61933e6b6922dee61d1f063d7933a95fbbd44e72f116077c820f73b6a29dfae8","45ea5837b15a29c4c4024791fe1375ebbf83d85362c6df88c4304216f7efe139","e7d35ca9ff3c5e5c9829802faa79e345aeed5dbb20a02ecf6b81e2c5a87c9fce","e668890bc896d5f4f477c5f340bd2c7333dc873c4d6c3e6bd901807ee1b73318","8dcb87636452814f9fa1d9d05d455a47227aa7b12a5955bdefd4ca895720ba84","02d6288af7300a5cc8f0ad7e60c18de1a178b03f7f42aaaab2fb2709aa543cac","87fb8ba7816697919a0144c4a25e8e3458668daced16283da7814ebfa6a80a9e","d624bcc827d317825464f2b349a46266f6940373fe2bc1f629939a8c24d75dd8","f88be881ea062cb0d1c908f07c2bc25877d657079958d9ee97dfeb71a5747da7","bf08a7b70abd12d7b26586897b736d1c0404f066aa427e277708a875f0cb6bcb","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/durability/de","quote":"Unverlässliche App, die andauernd laggt und abstürzt.","rating":2,"review_date":"2025-08-01","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.studysmarter","v":1}

Verify in the public log

1. Open the Rekor entry (pre-filled with this proof's log index).
2. 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.
3. Decode spec.signature.publicKey.content from base64: it must equal Citatio's published key at /.well-known/citatio-signing.json.
4. The entry's integratedTime is the independent timestamp: the root, and with it this quote, existed no later than that moment.
5. 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.