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.

“der Button zum eigene Sachen hochladen nicht funktional”

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 3199014646

Proof data

Record hash (SHA-256)

2df1643a2805b087f88db88d2c13d153fc0248d03bb44672030c96210a323ccb

Signature (Ed25519, base64)

02LklJhMFjnDBjFV1Q1pdVEiqLE2Ham5RoOPoZPpBmj/oB7m+y1bZ6vHfO6e2XwdRwCOUaVAru1E0oG7mspWAw==

Merkle root

79268b3be1e951447ad916daa23d94d3a225505999279adfec84e5728be030d6

Merkle path

["2df05ca64edd31d0336be31f9ff87657675f3ead9cf8a8816b1dd8d180a87eeb","600cab970d44ee14a8c3e602267b32835561da6f465fce139112e258842ddede","9c2dbc5607c25e73c87ddc2a7a0098a34c933c1995414ad7b9c4c7b932990663","9c28b76d0297f960926089374a47eef0e4609392526de6cdc587066d1027e19c","3cd6d660fbe52a1898c8143899b40fbe5fd281da0175f31887a4ba29bcf75f78","880ce2ec66963f8aa8c86c532e7973d4fd44687277f523e7fb45c3f735bcb559","be79bb92ab5426ad17818ec5f8cd4dc40d73348475fcc8638dad273e4b51d517","27504d597721184d569d96fef36cab41b6a39c9d2a3212937c287e5d13332a5f","d5f2d7ffa49519ef3737c5c67a592a24ea8ac8478db3e1dddba23c5f35040d3f","b68873e9a2a95d4357461d6761c07036150d6d1653187c510af2bee2cb5c5c40","5a1e1b396c4abc5f483318c0b890917f1ead6301ec76c4fabaf6c23b0d600b19","74ec616be75d7ddfa42f796ae5ee64734ee2aef3c18f854d94e8278d3c2de665","ca0926b42bcdad354c17320adc5661c1a0407072f1d5c01424cc2e7f9a3515fd","b8e0a41590cdecf5ee846d5a4dcd3ae91c8a0a052b75fffe7c4c5f4e2ca53884"]

Anchored

2026-10-11

Public log entry

search.sigstore.dev, log index 3199014646 · entry 108e9186e8c5677a77ce…

Expected log hash

55430b734e4d00e4ba9c340c7ab064436f91281dd4cbc27c1ffc37d3e26a0e3e 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":"v1791688566698","kind":"published-quote","locale":"de","page":"brand:vaia","quote":"der Button zum eigene Sachen hochladen nicht funktional","rating":1,"review_date":"2026-07-30","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 (79268b3be1e9…), 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.