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.

“Account deletion after one week is not being applied”

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 2907673729

Proof data

Record hash (SHA-256)

fcbdcae0692540a6a2ccced105dcf969fe85275d00b570379268fb86346b5498

Signature (Ed25519, base64)

zhHhQ+PFGkDz4oRE39kKCIxxkxrsaSewVkGyX9+L1Hbac2CBXJdAsXhPCM7uT2Hg6Y2MYS5s+xLhMuqJWMJ3Dg==

Merkle root

b9a08f9d6d76dd148110a496219c42cf3205c6f982800d84d5c85d77e9461e02

Merkle path

["fcbe4c455b9116e32ab3301ffb14e1f3521c5afa77ec2893815cda7c4ce9042f","84f6e54a6d6ec39dd2ed0b77dda7107b5bec7d765493cb20380475c693cf81aa","f0846d28abd705dbef2eee4376b6ee60ca74bb4502dc799614ea170f277019ce","d132b51435c5d8bf2bb1c2b26766bbfecd136e654e86595aad418659393c3565","f7fead30c970ae1edffb7262b0030dcb2b0e5fc6cce8a453e2f6899b3f9ad863","c257d752282c8c953d67b5f84f3e09c988fb2deefff2e33e976f8e33da0ecf32","a2703923c1d920356b5e301222f93153466e7c1b7749174db5b3e9507dd95f4d","2dcfbca550f56148f3cb8f3e6ec5d237dd3fa62d55d36f37fadd62b0255885bd","fcf57de0a9a49cca33dd83063b1458d8fb8b87f660f97be895aac16e06246343","e34df4682f1b51d069b490f515c441bcce6394d17d5ce5081e762d6a54690971","58fcebd1d3d07f3a6ba5f31279f2ecf014cdac37bfe65872be1ec5d6a456940d","e89b125d6d75a826a464fa50668f6e82a6668dbc929bfd3fce7c23cc14adfdbc","c975f4076f62a76765a4bc502e988829db65110a1650004b828d2dfb5f90a9da","f92a7fda99af63eb008476cac47b147880eec6868f847624f8b438c917195408","4543e8b9ac7bd077d9526acfdae449f0a0d5517cbb42414f50ef930ecdb9470b"]

Anchored

2026-09-22

Public log entry

search.sigstore.dev, log index 2907673729 · entry 108e9186e8c5677a06ea…

Expected log hash

bf9a74000249ba6e66b1e29aae9d8cb95c3400dc118569a80e5c0949f3e8ac62 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":"v1789969984102","kind":"published-quote","locale":"en","page":"theme:vaia/billing/en","quote":"Account deletion after one week is not being applied","rating":1,"review_date":"2026-07-28","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 (b9a08f9d6d76…), 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.