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.

“€36/year is a fair price for this.”
Google Play · 5/5 · 2026-08-15

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 2789279696

Proof data

Record hash (SHA-256): af39a67f4ad5ce6ffb2694137586dc771b34b73a0e3438bad7172310213778fd
Signature (Ed25519, base64): WlHzK5MRg81tMYCnDjlvLilS4OHPLeHvX2EvJr7hXgngSw8+2SvPSenFXQCS/dlfIbaql39ilmhkvlPF0IedAQ==
Merkle root: 97eb1062a862b99998bef0a84476eb3c3812bb77c2cb927f4fd2933b59da9e3d
Merkle path: ["af3e3b9e415edd6b9625fe7518c0b0efb41aa6d2a97b8943e0213104726102f9","c313d2e2ac3440d544e54c3b5831cf4340e06906151da4aaabf66d9bd4262213","d82e726ebd7c65f3a65176e3dee1e187da5cf516b55e67548a89374f56d559b8","c72c29669c926c4db3a2342e3659e2d5000318484a50f22ad7dea289f76d167b","977337087dae23448974bbd02387770add37548a34943263c9d003ea40fa6971","b6b812fbf3cbec6ecd14f384c50efb7358338ff9dd03294a3c704f46258d02c5","aeb127546a5c4064a129216a988a21674cfb5918a0b214b355dcd71227af5587","dc7f64f5280635596badb0a857b0e641661ba09d9e7a373e00fabb933c3bc23a","83a8c379054d3fd63522cd86bedd1bcb2831775bd85b83988aba3f92d556ef5d","a53c88522dff89f27e041ce0d0d2a83c52e1a0574bdfffb16228a21a10bd8378","46b9b279b944ab74dcd8719347239c10a7c86b6f847fbc5b238defdb13a666d3","f331b9b7b0f816973fc5999e2ac6d8d10c8908961884acb0adfaef58ea6e81a0","054c6c39d1f97397366b9a1b659a373f0607ed1b3f28fe998d444aa71461fa00","fb01c9b29e184d558c43a512ba05af475ec20eceeace4dde365559da92299892","46bcfbc656e0e2a380a8a94cdc0be3d8b4c668e5f9e54a10ba396a45b371339b"]
Anchored: 2026-09-11
Public log entry: search.sigstore.dev, log index 2789279696 · entry 108e9186e8c5677a3885…
Expected log hash: 05c7009ecf7ce5cf315c252c2a1dd135e64989a02cacdaaa3c5a87412a2e921c 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":"v1789017464005","kind":"published-quote","locale":"en","page":"theme:tuta/price/en","quote":"€36/year is a fair price for this.","rating":5,"review_date":"2026-08-15","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 (97eb1062a862…), 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.