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.

“This document cannot be converted because it is too large”

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 2582664613

Proof data

Record hash (SHA-256)

137a7819857377bdd72b54cbe6ef9694a1d2c628695c5e21199a6ca27c069a4d

Signature (Ed25519, base64)

7q7tJ3z7oDzZquDi0Eyli+vDHSztd3Ae0ELNFkxWJGrcpA/DCJBqVrNqYcbJrbLAtvDN68Nw/MxPQNL7XkBNCg==

Merkle root

6eb5f0de999e332d4ff1f5a17c7cbc64ff4572acff20a9a333a7379bc9cd8f77

Merkle path

["137a03b08f93a648645f9dc2241145bb7f09fd3306d687cac9e21583d27ce993","9c62ab1a7dcee9bb554cf65ac9f82a66d1b6b01ae82b60b2419ea0879e997e06","cc4975f4657d2643b97ea971b21934d78817efb7bdfbc058c3a74c0cd6710036","a51680cabbcd547ce33e6f5945895aa53a73980f65e92f70c80a844a2ee52967","90b363cb9a698cff195678b118ded4c8d939a6ffc85b05dbb27b180dfe1725d8","ee5aeb3055eeaa3c1b002953a630a1dc8a5df6b898c7726739919cd92a0e6629","ace109d4143e65334d94138bc8e203dc00d8802d3634a11394fc3efc94a453cf","30f29ff1f5536527efc375a498dc06694c4ae2a275eae03e53e3fc61d5dacf16","a5c42be8d7adef8b4ee7ec5d2dba8ccfa4df182a51b39736d3ae67fb65bcfe4e","d1bd46042120f0ff41873c155e5e21c0ea142aa14e1535d7aff7947e40a9edb9","7afe894391858c80cb03b8a16a11194bd93d6217e097412fb96d211822fb34a6","9337e940b7f8709548c4fe6a97db0e6d1456cbc8d635ace7649844bd1ab52675","84fafb1938dc12085d21bc69181bbfe988045a5a52e2d14f590f330785efc31d","3636da53ddee26549db9323e33a1dcd5168c1910fb5b849a7eaca6270f850dfb","f4ae9615440dda9b622f189073164d60d1c018e361cea2376abc66c14ec3a790"]

Anchored

2026-08-25

Public log entry

search.sigstore.dev, log index 2582664613 · entry 108e9186e8c5677a71d5…

Expected log hash

8093bd44cdbad53d6d80012df9deb710fa18f2cfeb1b8cd0e55864446ecfd9f2 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":"v1787630263994","kind":"published-quote","locale":"en","page":"product:acrobat/convert-pdf/en","quote":"This document cannot be converted because it is too large","rating":4,"review_date":"2025-09-23","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.adobe.reader","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 (6eb5f0de999e…), 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.