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 3198489507

Proof data

Record hash (SHA-256): 4a55eaf7305fc45111db9bc265573ae66eb97de8fee0df82546e7d2fbce34603
Signature (Ed25519, base64): WFA0403ZynkRSExXJOahYrJ0htXS6BfOPsHHL0PLIRWnD9qvDKFH8r0VU4R0QCw6nIziCQCsE1ZmXfrpnj5DDQ==
Merkle root: 240cb93491796b59a812f7182e64c43781541345e454701e4066e1786c286494
Merkle path: ["4a518adb68ce2efd0767367cacc318804162a47afe43e79bfed583a149e104bb","7f7993ecf517459fc75e3d84d202091eb454353faa6f6560b0e46adc63bccd61","f4b6e7a71f8ee0937d30f3b2e3d34080a510552bf5eb68e801d863146ba29747","696dbf3a60bfd94d28ceb0b87ee3fdfc5b6afb36d2234bb0f438ee00fc70d8ea","0dcafb60ca651911f0820d68c533eb56a6a3ac614b383fc00c9947c7c13e241a","45b2a962b59c1dddb84dd191184c2b87b83c1123c4ed37751cfbefa911b9f3aa","c8789c4b36368807c1d72a48eb19321a8589cebe913f24f1ae3d2833c6f45aa6","8763ab0a7ee30c1b0b219d298e6e4b9ce765d98f3e1e08a0747d646e7d3790ab","9a27d04d796040eaa79b677b3125f5ffbc96c652ab4eb2866a95f7325c8c4020","fdc6acf01eced546f9d2b8658934cc651d62ba2d57e1317249c015401ec0b9a2","5ad3197fefada8823cb614c9da506ee86fb12989dc027331e7ee50856a840f74","74d570f87708582f870a40ca5a8a7690d6274c3d406d2a50e5092b918cceaf30","d18e44bed2d452ffde94f0480bad35bafd04d9a4d8be46c5e3464f257f0111d5","0d65160dee55e809fe06e5334fb3150d04f822ce1cb47b2ae30b5d21efdf0eb3"]
Anchored: 2026-10-11
Public log entry: search.sigstore.dev, log index 3198489507 · entry 108e9186e8c5677ae5cf…
Expected log hash: 50393c13ffd4f8ef4c37424a8293b422d8c3ecaf6b9593225e2bb93e0cf2c210 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":"v1791686710415","kind":"published-quote","locale":"de","page":"brand:vaia","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 (240cb9349179…), 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.