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.

“One option is ToolsCrush, which lets you merge PDFs in your browser.”
Google Play · 3/5 · 2026-08-07

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 2543154575

Proof data

Record hash (SHA-256): 71032e53f16df96b89a55923693546cd852c287200d529c8b4ffb1a7e7a89bfb
Signature (Ed25519, base64): 83L/jv4cHOG4H3t4R3DUgsl/hlXtLmZavagMwt/XjTYPt6jzUdnMMiz/JmsPJEHapUyA55EiAeTisPXlxhSqCg==
Merkle root: 9ca8f1c1ad15a78206ceaec922c537c0b0ac598e12c9c25877f5e0e19de38c6e
Merkle path: ["7101ea0a173a15b5cc42a90466caddfd6b4b9a5ffca84fae48a82ce5c459d3bb","e29c993c5d2227c9bdbe634de5981e6d2bd41c1eaddef71c32973dcb7061999d","1efa9dd42ce6b9f7925203791133cb36c9d12d7255952d8dbdc198d18a06f2c6","c16fa049c3c9c5f48a2a407f4cdc2da42da64b480ae7635e33e671e333bc8459","2a97937c3f9a3742194d08a4ac65e58b2d9db036e652ba285148577dfdaceceb","3a5483d15587167052b967712a81e5917e210ce17c472a7236fb4d6a25e32716","7626273327521cacda3bbe3a1a05bd064017b4b8d29d557df8821a5773ff716a","e61f45cec7b83857cd46610ce87e90b1b2b0a513d601453cf88f4106484cbece","fda63fccf63f82356ba80f27ab28ddd981652a345733dcc77ed37493f5401db6","21d7039a943c079dc4a5a9b06b1352f3199498e7f8dc9535a8a97e7317813e74","67ded85d4a07062fe8eccc1445510db2ad435d9bde2a0cbef2b0268a7d0c9ff8","a383dda54097c814975bbe4525893869077a5f762d195960171df04e5dba1c42","969114be98209aceeb13470003a6154b1294d7c8dc772e07d6980600f808e932","bb86c0787e05591c350bbf95c58c2d99f0ba679999db51dee6e8bbec88a42a61","deb69ba818cac6d60ad262ee5febe93ecfd14e4c978778af299f82ef8a69b934"]
Anchored: 2026-08-21
Public log entry: search.sigstore.dev, log index 2543154575 · entry 108e9186e8c5677a0eab…
Expected log hash: 0099eed9d12aa99aaa44ed875b87ffaf90c46527b61dfd92cdd4db2c148aef65 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":"v1787284115102","kind":"published-quote","locale":"en","page":"product:acrobat/merge-pdf/en","quote":"One option is ToolsCrush, which lets you merge PDFs in your browser.","rating":3,"review_date":"2026-08-07","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.adobe.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 (9ca8f1c1ad15…), 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.