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.

“Spotify is exceptional especially when paid for”
Google Play · 5/5 · 2026-09-20

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 3220562278

Proof data

Record hash (SHA-256): 22f70973e9a68b69b4bb62b01ba2aa0a037ce577a8197c0a63cae3a365126a67
Signature (Ed25519, base64): L5DfS+YlIIBTKULncfPqzROJ17AhNM1M2FoZ8QjWARDX5V3FLTHs/2h0Uvw0dIar4zMYhYTDj8ikn0FDZfsFDQ==
Merkle root: 2d214bb14438515f4bedf5edd9b00a6a5113a016ba9b9fe8160d41d7e6046722
Merkle path: ["22f4eae34c0bb0a6cad5d6dd54a9fb683d792e65e4c5075bea04696c52a381d4","84327431be2c149eb4f265c5dc4a81d1591f335c69dafd854d1135271f8b6e9b","ce190afe423e8cfc49c1841680ac0695297f015776cb55a61a1f96a269131e8f","ef2c2ac75b929e3db34211517bb5ef7c3ebb9f6f04b5f070c2cc3a363606e164","86f642d5872528b678fa3567dd9e53cf30cb7d10b8ed4ae1c624526d1724923f","9c5c5b488ee9b903d202974f1e19319c5d694ca683228a31a2f7eeb4dd8f6a57","afcdc741152be2b96e8558780e18e8a06673f8da6545cca320bb67e61b1d4e89","fe1ca6dcacb4b47c9499af35937e2a12403268a9369f2cfae56dfecbfbf8fcf0","ab4eb941e2ab130733a25104c15e55f30b2723439ac276e335ec4beef963e155","f3cc4b4aee569d06e4a2cd5598187bcac7bd666174164b7e458fbd80db511fb3","6a765946c1eece595050f2a8d4bcb7c1c60c0ac38183d2bdf49521706099e012","98b2364feb69697f9c170c6c8c253e875bd2ca5af1617759a81536a90cf6f664","c8e78357eabd343df2a6d1ad8a9c122f986bc772443ab896b1e0fa855f0ebd28","35ea2df06612b261a549235c4e62b3e1ad1789f05da56f9ca671421e5071b72b"]
Anchored: 2026-10-12
Public log entry: search.sigstore.dev, log index 3220562278 · entry 108e9186e8c5677a2753…
Expected log hash: 13907aa3d3da271016c4b5e75946c4440692c6b4e1684187b965dbb983b157f7 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":"v1791777669660","kind":"published-quote","locale":"en","page":"brand:spotify","quote":"Spotify is exceptional especially when paid for","rating":5,"review_date":"2026-09-20","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.spotify.music","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 (2d214bb14438…), 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.