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.

“very useful app”
Google Play · 5/5 · 2026-02-11

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 3138947147

Proof data

Record hash (SHA-256): 25a80669a31c3d8d55fd665a54b20c1c325d052a1e2fb8bf01109f4f361d8151
Signature (Ed25519, base64): 6Wo/HYnrGhEsOFKGSkPeF1NYbQmOBNHEVU/sAMd/obznIFoROWI6etjDhJNNdsVB6O4JGCk/M3h+QAUlT/qLCQ==
Merkle root: 1b26d1b85473caad1868633ec4c931eb970e81199eea87926818f3f1753af37b
Merkle path: ["25a8c4fa7d750a7295a08e917e28bd43b02566bda967af696acde71a3ee896b7","e00ac6c56446ed1e05c81bcb6ec6eb05a4e69b5120773d806402194bd29433de","7d9bc7f5ceff66547dc219a68ef62d71908c64f3ba3180c1b4b6119f436da2f4","456a4b6ca7f947c14685496f4337c92dcffed63d8ad9a1c618b81469e69b4631","07874a92b067827dbd970c01b9851f974c962e4ca132db9ef1d016c3df43d609","4d8acca83374f2c3aeee7e69b864729cac7984147860a34cfcb15eb5f9899454","64aa3514f94f1a9bf63919f7c906ff327d1b41b891ede1fb616f1c7fd8025908","bde6457012b941ac719d3a1d71c5cef124669e9db12909bd6cadd6542bb9a6e2","9ce70caaf6672b14eed70e97bd1c4f1e8b4a2ef43bd01b0230ebaaf951998873","75bfd415434cf70646b2872c8cdd3bdcf3bd9d05df8b384e5359776c284fd82b","f2f9fce1cbc4bbc7d11040ed36da59170eefe4b491c304fd74a825f660080620","3e245e6d740eb81c4f09792f11d7fdad46833a72e13bd136ecc679eef2e69b63","0a715bd63526388883fdeb099e9129563e4c22e6bfb87e7eb3c16d297d4dcf78","a52caabaaff23a9dd211857be614b6dbb651e724ed1f53485e9621733590c1c2","06054c91b82ccf7b99bb6b4fcb7c60afa97f93295e6829b75e5bf1efe9493e63"]
Anchored: 2026-10-08
Public log entry: search.sigstore.dev, log index 3138947147 · entry 108e9186e8c5677a2712…
Expected log hash: 8f66b765b7efcb11dcdcf57b81c46ed3317a5895f5b870638e23b76f1efbb2d5 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":"v1791425549743","kind":"published-quote","locale":"de","page":"brand:xodo","quote":"very useful app","rating":5,"review_date":"2026-02-11","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 (1b26d1b85473…), 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.