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.

“An easy-to-use calendar.”
Google Play · 5/5 · 2026-05-31

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 3668908157

Proof data

Record hash (SHA-256): 1b4a92cb15f84bdede50e181c7efe85157f0c4e53fb77d0777e891e9f9d73bf0
Signature (Ed25519, base64): 5oddVW1aBU21POvBEXnMG956ZxFrc8paMDIUxsOHHH56CR0P9omLlPl+oXayn1El57G2TXaWU+2JiIUf0QZGAA==
Merkle root: 05cfc62de4d0c54d5988c234e4de0ad83bfc41ea25849dd9d979eded6f322593
Merkle path: ["1b5abcdf94f52b1211a42660d8c272b54b6a52dafcd907173e3588fb801da8c7","950e5eb0efea4108a7e1955d94f13b0ef39def69d83b4051b9cc234bec0b6572","94b92b9ae98bc1200463e33ceebe25b09656c079b11d301305b9b0c3ad78896a","65e3d9d0dea21afad5aa7ac7d05b4539e22557ba4104530047a31c215592e879","a9061043616fa69b2afd8414500e24eec91c6aba4ba24f6cb9c0c666f7329ab2","0f62c0ccfee67995ec1a7bd5da5409ccecb9f8c08ed53f0cfde079d55285e287","0631978dcbe72885835cecf1b2b0473681fbb80d24fd2220c34a9a4192488ef9","fcf2b9e21f422a8b57391f6dd7b53e64ba9cf48b548d70217601110cbd326cd6","fab8058c5303c2f8f0415dca2153d027fbfe40ba27fd53c201d7e3d561315f08","77c9969f4cafbdabe68ba0823ee22a2b7d8e69e2624dd3da0f6059a81a53b0d8","065729d96395e304fddfe27eeff74b8f1f0d5044a256599a2f899b5336b6cbde","c10e7a497069a8ad0d43c03574ca1525bf4e3c77b72778d80149d53e277da637","63be509b3dc15b74d2801a17187772630297b93244215543f157cb4be936b8ef"]
Anchored: 2026-11-03
Public log entry: search.sigstore.dev, log index 3668908157 · entry 108e9186e8c5677af58f…
Expected log hash: 554a3bd1bf640e4c4cee904a7897bcc74cb572b6d2b741111b4ee09cd6a9dd1c 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":"v1793707394647","kind":"published-quote","locale":"en","page":"brand:tuta","quote":"An easy-to-use calendar.","rating":5,"review_date":"2026-05-31","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=de.tutao.calendar","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 (05cfc62de4d0…), 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.