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.

“for what it does is worth every penny”
Google Play · 5/5 · 2025-08-29

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 2514383033

Proof data

Record hash (SHA-256): 635b794b9e4b39b67d43a07bca6b9e26de31abd442e340bb395619afc0e7906e
Signature (Ed25519, base64): Q2D7wLlT2lhVAWPomGXbVktnxt+H9V4YXmCEphmgkb0K4dsmvHAt1Z1a+28yPzY3MSUsyzFGzjEL5MrD1hw+DQ==
Merkle root: 197f899fafda406e0c9d0591eaf3664c281655082dfd19c34045187b374127b6
Merkle path: ["635f77b62d7b25375a22af6a93f03cc262ebff8d682d4f19d55685a6ad137b68","01b34a3d6f1193b2e9e5b977c913feec1b55f64d0f6b45b8b3d4f9b83bed4553","83e9d12f7c579421e951d36c5b837edf39521c3ec288f7ead9f204188525da09","87fb13539e6e3e3e7e490909ac05418c1be095e6a08a8195fb3ca00d3e778a3b","e49eb95c74d3ee7c462e0766a39d66c4dd4c388769058acef40a8e02adec93a0","4ba094596738456661c19af94fa91c4d6ba26232f486268e07e03bdf11081bd3","4e2e12f5973e4aad975533d60f8732cae6beba1d484ee574517631ac37fc882f","ae24883fe008f350244805ee375d4999711b81a99cafd155bfa3a98f675bf7a3","40b392b98e59cd0c09cdbbe83f36daf8ead6a242ab85afd02e31b6356d78ed48","20f2c242f24302f3b1cd760eb12c782d3a459375a3ebc5216f2a098c2ee8d747","4e7708a88a8894df209dc83ce410baaa422548ae4ac5590314b8935a7bfec909","5e604b5a5ef639be948323e0c4f5e303b5c481fedb2d584ffe1d863b4c3faed6","b26bec0bf0b0cab86d0ac84c71035185380da1f423e2081c4e404f2e13042a04","d72b61e7a45df808bdf968855d1d129de3ef5b87939ca0a06b3c95e25211241c","7b5d4c2155ce4f6908bf1c61cdd8b51ce48d7dc7c5d7f3bd9a7ce68fedb43f21"]
Anchored: 2026-08-19
Public log entry: search.sigstore.dev, log index 2514383033 · entry 108e9186e8c5677a6078…
Expected log hash: 4e5cbdb3dc34f3dbd6a57b603e905df6c94968b41f5bd83d5c9a25f2ea060d8e 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":"v1787127398505","kind":"published-quote","locale":"en","page":"theme:threema/price/en","quote":"for what it does is worth every penny","rating":5,"review_date":"2025-08-29","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=ch.threema.app","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 (197f899fafda…), 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.