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.

“Jedes Mal, wenn ich versuche mich zu registrieren, stürzt die App ab.”
Google Play · 1/5 · 2026-06-09

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): fda21b4dcb2f654e037c290bf86a12055e4aa8f47f0fcbc9f806f14ec8f4f9a8
Signature (Ed25519, base64): k/HRvbsQJGmoYhPf5J7wSpQ7jXxVhdHR2kblYqdJs0hmTgHRRBwJnCCa5jsZ0opkAoIoqmPrItWe6ybYHMgyDQ==
Merkle root: e299bf38720a5a91bdf63bbc0205245bccdf3432ab1652c69342549658b7a9ef
Merkle path: ["fda293846656059cc4d01be44e605596b1561b5e7dc67cb5424233b593c957cf","46bac3e32423fdb74a77a7de83de106fc30c639cc41cdd33dd5ed5329857646e","704fb1f9aca55d2f4282e0701bce7f395f9e49c5f3905b6036a3e4588494bec7","21cdf2fc2aa245c04a030790bb0d23eb32effdbb5a51c6aff7232eed010cadf2","f2ffcf6cb92fcacb23c712c19d95b69a89f5cccc40eb198923573adf9277c7bb","ec7ff54f42040f99ba3e7fbd0cedd9d35565a309f827f0dc818c3a03056b9063","7e4fbe417948449573fc77800e3ad16ad3ec0aff2cd3ee851e7efbcec538b2a0","8e7ffde51b05b936a7eb5389106835ad100c18f24562e695d35767305911431f","3de80eaaf2dca32356abbcc46c47132e3d244da28ac1803f90c0600bb4f0836e","810c2b483236c5da900ac0ee9beef62cec7dbd9d526189df63678c5b7243b882","a3cd6a309f10748c6992d7d249a79b7e2e2669fa48a49dd673039acab527d8fa","b382aebc31acbad71afb3ae06e4e6f9b354e9da57050f36d03bb1ef97dab503a","f95e3a68f572f5650a4093453e2bf28168547fa91a01ce08e539b3d7016a3f80","53a8a23597d45564e495678bf6125e41ef42f347693c924494330dab53ea1e2d","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/ordering/de","quote":"Jedes Mal, wenn ich versuche mich zu registrieren, stürzt die App ab.","rating":1,"review_date":"2026-06-09","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.