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.

“nutze my Concordia schon lange digital”
Google Play · 5/5 · 2026-09-24

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 3239939960

Proof data

Record hash (SHA-256): a64da05333a014a428c2ff8a3f90c2a5e68de2475c6372e4e8cd164d588ef49c
Signature (Ed25519, base64): 8In75e6aPbzqNRYE8e1VMBybO7Fi1LPhlwRrINANHJpeWUzu2neRpmiWK8bdmmRGA2seOjiZRL32AhyWVUCYBQ==
Merkle root: 954962254ff2eae9503796c02bd08deefa3a5722e4ac0b3981007e2b9ddd84c7
Merkle path: ["a64cb731531f3e3ac41c03f468d106a54e2e516ab4e21b6680e3da332283e567","3d9e73c5161ac6eb275323c75db3704525d2c88d6f8a243c9d417132f90b2441","e657a43c9748b4dcc1b318e49cef876a02020fbe04b40a16e18062d39f16b93f","3c2e5169ed7249da75807838b97887973661010a8feb942cf0c9d8d81b458486","83460cd9bbed8c1e364c3a0a8660512034cbe8635dd0ae55973643f4bc693ce4","c8402336e7b3bae9b15160740b559b9da02207068417d49c69a025caca815e90","aae5023c8825bc849ff41703775184d63895980973e9f589bcf4eb7dfd83e768","97c9c11b1594b8c92e8f4703338b06acf5c30dd5c02c6adf4c0f598722e029b8","40d65d08d48fb5cc07b60d69b6ede68f1d71d19273af38f0cfbd375160e3060d","87b98a2d86478c56ebc7f86f438e6eaec718f72dc5bb0411cf9998d934405e7f","0628828ab48e129fb670263f1a5c40121d22c4752b7f929435bb80716073425c","4116b72b9329da597152a3e89388a1a150a19497f1decb947d3528b9bdc53706","b8cdc2ac259b99ee128446ac841a028c8f1c17c2b2a6f3f4273d47d82eeb36d0","e7bbbee54f729cc449b73bfdd383c96b7b180e618c270037b5697f1fcc75f254"]
Anchored: 2026-10-13
Public log entry: search.sigstore.dev, log index 3239939960 · entry 108e9186e8c5677a0082…
Expected log hash: 28fd9464b857a07e61931e67235e692cb8af33d7541a60ca163756a54a64e9c2 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":"v1791859824762","kind":"published-quote","locale":"de","page":"brand:concordia","quote":"nutze my Concordia schon lange digital","rating":5,"review_date":"2026-09-24","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=ch.concordia.myconcordia","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 (954962254ff2…), 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.