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.

“some books have recently disappeared and become impossible to download again”
Google Play · 2/5 · 2026-07-23

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 3239939960

Proof data

Record hash (SHA-256): 12da55a4c1434dca429603414ad018e270fb7481699f082ad7600700d3074cbe
Signature (Ed25519, base64): isuPgdhtObkCujfDebmGLKy7vwLTcCXJgyBzWDR2gTUmQFju+0w15Pipp35mMF5Ttqth+VGIoLzn+4HpB9odBA==
Merkle root: 954962254ff2eae9503796c02bd08deefa3a5722e4ac0b3981007e2b9ddd84c7
Merkle path: ["12db988aeef3c652f03cf448eea0931cfe2dbf4d9fc844f203c08ea3a44cd36a","9eb1e29fa57632d81d2acf5fdad899c686f615d812ff8d0cba1213e981ff560b","01691d1216b2274175e368172934d5fcb142133e7755ec1ecaa4fad3110434ec","cba4334f9291d9729e20a1b6a25684a07d5b10e0e142cd25408a7369f9b9daac","40a391fa4fac0eea580407a3d49e2f16caaf4a25878f57b150748c20b615fb20","18dff93b46015789741ab9e68a0d6ac1dceb00a82ebb88c7cd4e71edc9178ba7","90cda4de6ba547e1bf94025d395d11fcfa6e219097e6ad7063e4e9baa3df3cc4","b0fb2d2424e0a84f1163ce116db8e696bab3f329bac9a88af8c58dace4a61072","efff4f6b08f2aa71d7c404896cde0165105682ab98ebfc7f19e7ece1ff46a87f","873a5fc80ee5b1be34dd5bc63b4383fc1df58e58069b1615fa2265187a379a79","ae0d02eb4672b68d3bd901c75d5395c5aa8f70e1034007ed320cfbd88eab7b1b","fde62d346ca93fe6ab586e87195f181c2c9b2ffa2c14b8bfe557af9f131263eb","07b2ba787804bc9fbb84c73bed76b7f65ff1b8c1694261a8264cf5f3209f315a","e7bbbee54f729cc449b73bfdd383c96b7b180e618c270037b5697f1fcc75f254"]
Anchored: 2026-10-13
Public log entry: search.sigstore.dev, log index 3239939960 · entry 108e9186e8c5677a0082…
Expected log hash: 28fd9464b857a07e61931e67235e692cb8af33d7541a60ca163756a54a64e9c2 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":"v1791859824762","kind":"published-quote","locale":"en","page":"brand:audible","quote":"some books have recently disappeared and become impossible to download again","rating":2,"review_date":"2026-07-23","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.audible.application","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 (954962254ff2…), 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.