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 really great listening to music on Spotify”

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 3177778280

Proof data

Record hash (SHA-256)

a157ecfbf9c5c4d38dd58f91a5a76d5233edad3c53f4e8c5b74e71dbfe1dcae4

Signature (Ed25519, base64)

l9ygS5aJ/gs5clKivgEwELRlhR074N2SvQMvev5wpqDx9mmwfg/m+8BenWiY787rfNFbmALOdBiBXXLZdBlvBA==

Merkle root

9bf5e8bc71b8f6d2ce627972b9fb81fedd792f7b02f32eb60fb8da440673ef59

Merkle path

["a15693800dc3c5672fd2d14c7af2dd4ba57e742641113e68ba67e3802b9d8aa5","b20d78d1ab5c9ee2fa12bc8decaaa21dae671ccf4d2c2d11636bb2dfa8db67bb","a904e3624db2d48fa104e75859d1708fa1816a22e9d95dbe8af9b8a7fb83e0a6","851ada8d3d5b01ab92249fa40aebd6ee576bdc4fd76e60e1938c5ff79b172aad","0368ec966e3f1ffc4cf53c694d96677f96f7793075b3b5239cdb6d073fefc7b1","592b03e2a4b3c95bb324354e104b0af1b37327200a33f304d6437e0bd27a7a63","2cbe1ffa886d6e06080d767b87cc8223ba8c2f3b0403cad90c9eb061a4918458","07a179648cbaacb39d5ec62695c9308bc98b09993eae0f0aa8527fab5e73d657","9e17c7b3575537f18826848e4be8179f21b003cf6cfcedbb9df82499ad844072","820966efbf5b5fd2243a8240f84bcecb527685bf13a4c41b8a6c10098516a9ad","07da78a2ceb44d53e2ccdc8b4d4628def1146cac4b1b8712aa7dfff3e5813c61","bb3cc7d40a5a400ff842bd58bee12159fa7fcfa2da3c490fc1bf89e681560ba3","aa0e555b7739d6e04cbb925a0d34787576df4ae9ad90f53f6416ac2f935a93ac","e3d4f74560ebefc008080794ff80cf2bbc3851f4365eda6b2fbf79bf3ad31493","1fa7003be7676d7952d939a45bc47245b2ced828dca06428675c885e312c802e"]

Anchored

2026-10-10

Public log entry

search.sigstore.dev, log index 3177778280 · entry 108e9186e8c5677a59b6…

Expected log hash

6b6bda8efa0d998f344024bc1a70908bd21604d8857c81e0a6e6c5b1de7aa565 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":"v1791603230890","kind":"published-quote","locale":"en","page":"brand:spotify","quote":"It's really great listening to music on Spotify","rating":5,"review_date":"2026-10-08","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 (9bf5e8bc71b8…), 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.