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.

“Way too many updates for what is basically a PDF reader.”

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 2515243153

Proof data

Record hash (SHA-256)

fefe0248d87ac10f56e1ea0d0710e758c7c05bf3a4a6080a167be8d33d82690f

Signature (Ed25519, base64)

N48maqhHNw0H+uY5/7VzVyNg/+9q1NbcWoMyTRq/BJBtNqZyyvshdCcLh4oBMRwZi5Cq8wkYDWsY6yOJqAsvCQ==

Merkle root

30b81ce96f52ff8c37a1dce6a2cf1045c2f51663c1ddbd5ca071d040e32c05d6

Merkle path

["fefa87238ec204d93df774820368e1727b3d2fedb22c8feb62bd13d1e36c03b6","25078199099ec4e97f2a5a17f0557b43e9d2ffe22332803ee32d5587e550f8f8","5ea3a7cad018cf0f06bb81b896ba14e7e4a84f7d3806e5f598bc54ce82db8345","08b345e902bd423efc5bda0faabdc8270917a8324fcd40a759183d18947dc352","b6e20706312a2f6da1e9bde8332fac7120f505732c0ecb6fd1d4e5b844f7ce02","bbbb2f0933fa1648d8d1270a50bb9be2d521d50d44b5a789cb6c272283dde99e","927bf893714bd5e6a749916da018531eaed5f48a60aafb38580c2f95f66d04f6","9a84208d31185616d9fd156f63cbca8c8526795b72a70cf1c0976a06feac2efb","7586dc62b129c7d604d63614de71880574cb6a264c2ee3a7540552454b4c8fa9","1b7d75218409e2d057a41d7e603bd8e69b90f1d5e23bcda4b721d2aa8f99df58","ac7da3171de91158bb860ffda57540bb145d87d9e3a1a9e6f74d9fbf7685b1c5","4281a29cfd232d37e0fbfb8aa7c09e8a557b1a863bf1a3c9a19105846e567fa2"]

Anchored

2026-08-19

Public log entry

search.sigstore.dev, log index 2515243153 · entry 108e9186e8c5677a8eb5…

Expected log hash

314ca716b1ad71ca29fff6da960e81a719fe30fa5fc14d8646acca79a7c09353 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":"v1787138594002","kind":"published-quote","locale":"de","page":"brand:xodo","quote":"Way too many updates for what is basically a PDF reader.","rating":1,"review_date":"2026-07-23","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.xodo.pdf.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 (30b81ce96f52…), 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.