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.

“it's good to use”
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 3178115911

Proof data

Record hash (SHA-256): 22f68195152992b016cb21a7c53e69546f8b7c690b9322a05d773c086d21bd6a
Signature (Ed25519, base64): YT308/42Qv9cJzUatuQJ4+troN+2fWjLyZJVjbRq/nnZ7fmKMyWdbnQO3HkSHOyHF8ljCeI+ktvg3LkEAQ3xAg==
Merkle root: afb9ffbb4b4e88017e1c868247f919ebcfe69f09127d391e7daa08019eb2b63b
Merkle path: ["22f39216aec78cba15aaff27776123034521625c635d20322cacd1ef5bc373ae","1a001aba7a3a8dce2f7df80f0f67983ac3d12c541535ea1d166788ee5b1fce2c","81284e32b17271a3dcd183092b28c2c686c9f251b3d1258bd28fbd92ae834dfb","7b1b5ce4d8b4389702d7ef714109403eed21dbea84b23f4433e87b48baaa3865","c289de82221ab41b86c2a4502dbb3ef42a01b2f821624e64b5e590c27514f7f8","05b6b81e51a5489d43dac00e0260b51ca5251ccf5d272e9c3307899ca193d97d","efd1263b9c69b29bdebb80902167dba1ac7079123ead707183ea858a6b4ca180","53cca6ed96347a798346cac10bd1d35a27d6ea305067a9280b3a915a881fbd25","d558565b3b4b5acc4a0c1cded786e9d36ada9313371454858331d788eb4488b8","71bd130de45707ab98c550eab03b0447b4b4f0e3ebb413a01e15a5ad1f7620ac","f83944b16fbf43a8904cde916c26d245f82f3fecd41aad7e2fe680a6de8825bf","e7d5f6e88126b47f3ee25c7741cdcaebb40c6bcd9d35a859108e3ac93e8a0b29","09648cb4275ce9eb9f26709778da1b3653a6ea84465537d5f6fe5c1b17d3cea0","15ecb20ce6559654c94b8b858c027c014996a92eb19771813db0b794d6214fb6","72bbc4ee0a973113b1d556f76d02fea2c4704794a0d313a96e49ff7b6174dec2"]
Anchored: 2026-10-10
Public log entry: search.sigstore.dev, log index 3178115911 · entry 108e9186e8c5677a2bba…
Expected log hash: a144ffc32dfaa9fe45b4895b7f4c17280667152868dd8de227ca2811c60c870f 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":"v1791604579182","kind":"published-quote","locale":"en","page":"brand:spotify","quote":"it's good to use","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 (afb9ffbb4b4e…), 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.