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.

“leicht zu merken”
Google Play · 5/5 · 2025-12-11

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 2904877428

Proof data

Record hash (SHA-256): e46039f91d10bbfdac9069a37d12a2986b956d58a6dc1aeab4157aaa4967e987
Signature (Ed25519, base64): Hs/vEeqoicTt7Vkel9NxN3Npihs1HTB1/9DJnNqJBfWGPUe+SCXODLnABqGmAK7Dqt9grgbjtbok+5QVkmP/BQ==
Merkle root: e299bf38720a5a91bdf63bbc0205245bccdf3432ab1652c69342549658b7a9ef
Merkle path: ["e467586dd3b12d09d2f7b15902031c271d50a8d05774da8256d189f309a11ea1","ee2bbd3092e9056387806c4966c35914b537e51bf80372d8ae9f042a24782df6","2e0f1ebeaaef15de5662572948ffbae0e435b32f4294654291f1c6c1ba8fc303","54d9bec4d312efc64b9f03fba7d4ad90726699620816704aa04fcf8bceca43ba","b6168df2ab6cf0a78b3b774e30137532552afd5d51fc1e516fb8c699c6d9f65f","a4887980cb305190504036953b417a52bad54f2a7081e8fccbda7f6920589dd4","8f2fcd324386ceeb0d33943be970bc5f1fa92bbf41fdf6f763343898c4f9bb7c","067789482239bcf5cb3b6ba6e102397bde1b6f4f9bb8d3c78c72310b726ba8fc","56cd36dff9b453c138dea9f8d1f927ea31a5132e8ef1f076632a45c1ef48e891","312a271d0a96a819a67a6e9c1692af1c90f1f1c07453150490779ef12aae4297","61847aed1e15fe38603f3749ed4f967e83902fabcda16f828dbfb3db9a44d565","d28ed21d4373cfe7811429a5d4926ac987665261fca2846c93ddc2c90e391266","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/durability/de","quote":"leicht zu merken","rating":5,"review_date":"2025-12-11","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 (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.