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 has disappeared from the list of extracts”
Google Play · 2/5 · 2026-04-07

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 2515282333

Proof data

Record hash (SHA-256): 552ff0cc238efa97420e90904412f4c9da69f8d7a9873d30ec11594e94b69f88
Signature (Ed25519, base64): T+RTg9DRlyyiU9jD3egUxoQpw6cRYW4kbdZ2BRxCQlNjWm+ecbS9BtcX19GUQDy3Az1I5KxSCHc9b6EK7jaFDw==
Merkle root: ccae92ceb3dcfba104788424188fa34a8cb1410075ff6c1a21fa513e89f0c4fe
Merkle path: ["553310f15aa9d363a00a130b885ef6ed70a99c7cf9d8f4dc383f199d38950855","38fb7b2c6c581aa37aad91790c29c0f3ce9b05ea3ecd14393eb95c41566cd873","d4cebd7bf5f0d2eab345c6d2c3d2557bd1512c6800fa7991f9747362c03c6441","1450602af438d02017a6808db5a8a887910d3816dac551cef858f14ebefd5656","05d307fcf95aa9fde67d97dd1bc374b887657aed98a3a788244a13c64cc4377b","f71b0de7feb8cd36d673505718300fd48b708fc9fe6b970c6adc390a77cd46db","44eb9c97f5e416c2c1d65d016af4afc16bc73536c8d2b5fedeaf3163700c40bc","d885ec861c2fac385be6343d3c8b698f60d4027a4002190f58d116d17144016b","763c3f27097d7e0678e3420ae677aa91232eaf55c5a4f1240e67cbc20004a4c0","40093f61be686fcf48f485ab7e753e028433dbed944eb7e89a063e23613ae081","eb04dd4ceb9cf8f61254599672ffaeb6e65a3858818d1255d89ab344fb15d319","a65e1fff59bbca0acaa1928e3d506a68b31fa5241a153b5534e630145031559e","f7990b6d58a0125e363e1c2ccaf33e30b0b4839c002a218db24fff9488bf159e","818afa9b60a40d27c2e88a8e5f62585c079335588148aef8eef246906a1d9ee6","f73291c2ca924ce4b3764e4b6ff1da65a701069f04fad47c52c8b693a0ec7e41"]
Anchored: 2026-08-19
Public log entry: search.sigstore.dev, log index 2515282333 · entry 108e9186e8c5677a6652…
Expected log hash: af455e73500113c158c8df9793eab703ff863c9c98fe38560752c9a1772810a8 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":"v1787139531268","kind":"published-quote","locale":"de","page":"theme:xodo/ordering/de","quote":"it has disappeared from the list of extracts","rating":2,"review_date":"2026-04-07","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.xodo.pdf.reader","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 (ccae92ceb3dc…), 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.