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.

“Pay $10.99 its well worth it”
Google Play · 5/5 · 2025-10-01

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 2542751096

Proof data

Record hash (SHA-256): 687c7392107060aa323df2b5499b73b35ddbc1272fcc0960b427bf9cb1f6e091
Signature (Ed25519, base64): r6DD72o0yb1N2Inwkf/k2+/ZusBzuVPbDWipQrLUMvBCTUwleb3HunCar5v5I5GDsdd3d9Uv6/b+q0+PgNj8DA==
Merkle root: cc9af896bdf0beb88857e1dcc841c404ccd4c59cbcb6932f17077fc8aa87fc23
Merkle path: ["686a60991e88b5654730709ee2f0283f545d319d4dbe1796b30704b89bbfb8cf","4306af8ef5a20142d727ca14e53b8c3d2014b2cc6770177361d5a85737275aea","a5197dcb43809001d8e0fad8d0f4203999b5d3705546cf97999519346094427d","264298d012528472d759bd62e8e452a27b8b4a2edae3d32d3de3fc5474132250","11494bd4e0572f4acbb6960a821288ae035efce490b0c3ef158ca13674d9e6b2","621e10157dffa2227c761dd63615ab9e15fc1bccfb1dcbab3c25a55b0d30f33c","80e5117479ac09d7f2e444d34faf8967476a2df70ea00637bfda1b25f3b49cef","1e7cd2f98e0ef26b0cf2aff532e5466108bfd0494bab837216e643472c2e7f76","532e3b116eef91bccf2f8c4978cb5271c922529308f348a447966996a5a3e293","583c460de83a84c94963914c9bf1002ef0dcce9303aeb3e1f7fb268a9145b324","30644cd4d4baf1494f3006f280381dd84f4043211b5ec1d3eadec81cade21db8","d29846d305ca93ba91cb7154854585f35334e65b72562e64a3ca2a46c183180d","58b1aaf4ff68687e7006533ee52afa6414f635ffd828ae73a306f5f050aad891","c7065531c3e7c4c7309e4efe4674330d1f0c5150d728171b8966a352ede62d5a","7e6c62c2991c7cac05134c9f9e2ab89c75f6106f706f524eb2e9fa9f554216f5"]
Anchored: 2026-08-21
Public log entry: search.sigstore.dev, log index 2542751096 · entry 108e9186e8c5677aaab3…
Expected log hash: 8251ea19feed4cbe325f48ba93f0e47294878633f5d43178e4a3a023547e795b 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":"v1787281943761","kind":"published-quote","locale":"en","page":"theme:threema/price/en","quote":"Pay $10.99 its well worth it","rating":5,"review_date":"2025-10-01","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 (cc9af896bdf0…), 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.