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.

“Very poor customer service.”

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 3198797320

Proof data

Record hash (SHA-256)

3e9d345b56819ece0467097ebb74c003ed15638c7823fac5b11896bfd9ce1d6f

Signature (Ed25519, base64)

NllFG5MfuZ1/CwY4rdOTs6l7FszUxu4D0vj5ggdqvni3Mb+jD8Xx0DpYh5jPwGgQmh9DaxfXHJmsBY7VaSBcAQ==

Merkle root

199738dc68b66dcf66f6b0cc77e2cba74c3bfda88989684620837b4c4e64818e

Merkle path

["3e8d9d071f61a2b88ec518eb7da4529d9c5592c0a5217ee1114581e2c1938e1b","051afe7b48eedf91a1aa52e90592039c5f288ce524b261b16afbb4c4cec9190f","5449f7f1e1aea59915031847626f0c7c989db3ea1b3ad1335887e87a0e9fa92e","cab3dad981d1d6f2b5ad43f5da7329edaf22cdb73c49e57bb66e9fedbf60a6dc","16c9895e8275bef855fca54eaae5787b1164559d33123db9f96283b67b8450f2","55af2c1919c5574042122388e5dee9770b0f44ba3e84129e6b1c3c8b2ad6b920","f6b6944bef23b00f22dedad30d3b6d912e1736fcf6d27db44367968591b1f4c8","a2652a6ed25e881df9f98695f6a7ccfea5d21d6d532f06aefe28873df959d710","ac7f13134fc5db9ca83d3a1f22a9fc101e9185c187eaa3f6cdc7a6cbe95249d8","8293318547411a11b30a1a0bba2556bfdc840f7cc646fe10e8d7279258655cda","044d29ea84c64121195ee0232cedf7d4633096d16816562b08b68059aad62a3d","c2efc19050cd51016477281115d61ba0bc460759f5adf7f1bbe5ac7cd5d2bcae","89c2d1ad10f8da8a1ced326bfbd1f55882866fd705571bc337258b3314dad42f","ddc8a66e59fc8f0934334cf08e419f621290129e658cbc58d8ec27bafd90b0af"]

Anchored

2026-10-11

Public log entry

search.sigstore.dev, log index 3198797320 · entry 108e9186e8c5677a14ba…

Expected log hash

46227e67415cdf5b62c43420eb8b7a80b35acaa912410c2711787f678b77c9c9 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":"v1791687727006","kind":"published-quote","locale":"en","page":"brand:vaia","quote":"Very poor customer service.","rating":1,"review_date":"2026-08-31","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 (199738dc68b6…), 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.