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.

“I was charged TWICE for my premium subscription”

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 3273174405

Proof data

Record hash (SHA-256)

1ff41547977f348facb64d622ecdbc23f4b7c5efbad02bb696484588f8daa76c

Signature (Ed25519, base64)

TC4W5MV8GUv5IIBi5jpULudyDe970JwQEWyyaYuTkFM0tBcoin6NCTv8mJ8QwOd+6rZ5ToABZRXLjUKgDinqBQ==

Merkle root

a69839899d35e428e965dda22faa8c37ab9f1f9e8354c5c301a0cc1dd97ec994

Merkle path

["1ffd714fb374fb4345ba5a554f0bd9fe334ca84bc1012b1f55188138cbe46c90","f3f8cb2fd692f17dfa6b01436c93cc8a41bda6985ab9e079dbda120bb43b13d8","54826e81752ac596a9da30f0f9b1343cd72cf84fd605d0c442119cc672aae5b0","77e0b8690a7c43c58960bbcea839cdc033f923b36ca19561d3ab693a3a0cea51","793a566f0f5b0347e00fc7e4eaa5438287cfaa6244c7589266ee95aea564fdc6","afc49c762f633d54fc379e206d2a612f06206b9d46113666e2d782aad057ae63","8b61f105221fb5d035611ef59d178877f8a80b4071bc58f1817a8ce3b94a5855","a58788b252bfbbfb80df72aadf55de453c546fd1835eed87370cfb9f868fe73c","cc8346aae7c7121dda9e61e8a8e3c6905d4c3a519c55d3f58afa26797e0a45de","00a8ae3dbef283f1f2ff2ceb33124ea1e51cf34bf52bd8f7e4e06cfc1e910923","ff7277eab9fccc1be5838f9d5ebcf9f1572e84dffe953d855ef70fe521412a13","48072dccf34406d20883cec701fce66bc2705f5d4c15636c2ca8b10cf03adeb2","c91b6bd41b0d77873850967d2a33b58afe5c9b2077c41a3bc5e3eb1e0269e91c","baf50621c43237ae6460207428b54bf7432b36069b72ded7c303da6c80c67c5e"]

Anchored

2026-10-16

Public log entry

search.sigstore.dev, log index 3273174405 · entry 108e9186e8c5677afa7d…

Expected log hash

a8603da072baf84665c1f8a43f623ad1abcc708773f195fc7b697ae45f09c136 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":"v1792120797404","kind":"published-quote","locale":"en","page":"brand:spotify","quote":"I was charged TWICE for my premium subscription","rating":1,"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

1. Open the Rekor entry (pre-filled with this proof's log index).
2. In the entry, compare spec.data.hash.value with the "Expected log hash" above: it is the SHA-256 of the Merkle root string (a69839899d35…), which ties this proof's root to the log entry.
3. Decode spec.signature.publicKey.content from base64: it must equal Citatio's published key at /.well-known/citatio-signing.json.
4. The entry's integratedTime is the independent timestamp: the root, and with it this quote, existed no later than that moment.
5. 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.