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.

“die App ist sehr übersichtlich”

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 3163352270

Proof data

Record hash (SHA-256)

8cf09a99b52f3b481232c955e71365848bb5ef4b17a29f60ed67613a9d796c7b

Signature (Ed25519, base64)

JOyDefLUtvS8Lc806YhO4b5o3cHxrShSMH57ExYnMl/7Uhke/wwflGo3WEunAB1E8PyEf/WKxGv9wEJUcpWdBg==

Merkle root

784ff8fc3c42eac43c7d399f0d67bba55d28073a7e106789ae0c6c3f5ac9dcc8

Merkle path

["8cea4738e2b452b052ea5920cd336fb13e821ba1e2e969adf4ea0ca39cae2450","aa17f2f690b0c9ff0e1a708fffb6b5970caf307456eb2ed94586efe0ef50ba95","ccc0adf9d01b5dba9efece8f4bc13ad0c9591fbc2af39572d8fe6c2915875f24","048e5ad5827e8268177e9ad56d46c114e9526c7a5dfb326ade8aa419d2150055","7ec0992f0921323741a2b223050ff5e745221bec04d0c59e7a496758f4d9eb68","8651f8c0f6deccad0a8920c7ccc336109122eda3b42864b0173c1bb513b58b82","6698beceb7b6511b95a7a8ae5938560cc69b793061d5af1c5dc6a4b85eae16c5","1513ac8d09d8a592210ae1d96713b50ba781e25cd43ce2d0daed18f255be78ad","17bff105ae0527bb3bfd58a3e5aa7ac306af6fdaddcf7e12f2fd6903d582067c","7f198ff58e037820d3ac4efaf9c7ece0b9cfbaf9ac97fad001eff21c29567ea0","91386c95ee0f1b5506ac5a51064a524e2d9a77e4c6bdc2ef064c6879e4bcb402","134cf62fa4457be90fad52ade3693090dc3bbf86989804f0dd255432e5eaf7ff","76d400188c58a939fb5674b0c9b84ba0bb8d5bb91a670efe6d7087f7cfcad90b","c0acf811319c30afcbe8b77293e97c6cc46544f39bfd9b01931c88a06aefa19f","5fa09e3847513934bffaf71960ac2a100e20422698698ab1e19a4fe8ac133514"]

Anchored

2026-10-09

Public log entry

search.sigstore.dev, log index 3163352270 · entry 108e9186e8c5677ad020…

Expected log hash

a3ae0badac804d14d314abd0e71726d06a96c43a3840dc1d63acded9268c461e 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":"v1791543790412","kind":"published-quote","locale":"de","page":"brand:concordia","quote":"die App ist sehr übersichtlich","rating":5,"review_date":"2025-04-22","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=ch.concordia.myconcordia","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 (784ff8fc3c42…), 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.