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.

“the essentials like basic viewing, annotate, fill & sign, even liquid mode are available for free, no ads, no internet, no sign in required”
Google Play · 5/5 · 2026-08-12

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 2542879916

Proof data

Record hash (SHA-256): 14c71b3c6f9ee233c716e264985a34640e8a724e38dd2e8aa6fa1b7e2c8dd73d
Signature (Ed25519, base64): 1Mr/kO8DtHi6/wPrmiluqMl7D8tcO3RjGF3YnKv9qziF/AyH7iaNUe9HhcK+JRgK0lyX30pnJHQbq4BEAtT0BQ==
Merkle root: 681242bb8cfa94d3b60cc06de1bbe3e5e124dc1675276b11df0aaabc9faee58c
Merkle path: ["14c2ce43165156cab88bc886120f5c0d362272ac6a481798793df5822ba8105c","a23ce8cc7a8ed174bd9cb3c78183b9d6ea4179f588af9cf75e60efabac0134a9","2b38dffc7c837f78061dd6914da1a26701b2b174f5ee0ab3170117cb7f6a8338","405c32b592865873f2648a2b3b5d0b99042b39302be347ceeec8d74fd8dd343a","69da51bfe7c37e0b61bb13a146d55fc0a23d8ecb351a40d87e0825a6a3a0894f","daa95a8fa64426134afaff3d148a6043282479f15b015d6d7942fc3bb8f5b2a1","42dd13f114cf354aa1833c2bb997bf8706f6c25ac6e6feb53b94ddd899d6d600","ba6b51b0c9f225ff674ccfc4f2e635f33516ff0243fc8f7f36ce1a893870a360","c25f74d610c2499f020127057efe75dac07ce943d7d1a58fee7278cc5ab74d72","1dedd210e724b223676140649778561e42adbbcefad96bac4e62b4cad0e85d66","b1e3075cf0e6ae7cf171f287e766c9a06a738cacc4a4b50387d8bc7cd16c7ae3","37dd8004f747556e60a45fe69c451d174d47b16914c67cd7925e5ba2b1ebfd55","153ad351563f9e4de319dc32f3ff7774e0dfad0704c150aeeef6359dc7f03444","018848b1e64bb342ebfcf3461012f852a9938ad88239203d89ee764353ea1567","78eca2193b177c5ad7546ff5d365dd6cb79efa278dddff5151740888f319c0e5"]
Anchored: 2026-08-21
Public log entry: search.sigstore.dev, log index 2542879916 · entry 108e9186e8c5677a2329…
Expected log hash: 8337812f20bf1207a3c96eed87ab975d7e92ac1421dcded24507b32e456b788f 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":"v1787282728402","kind":"published-quote","locale":"de","page":"theme:acrobat/price/de","quote":"the essentials like basic viewing, annotate, fill & sign, even liquid mode are available for free, no ads, no internet, no sign in required","rating":5,"review_date":"2026-08-12","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 (681242bb8cfa…), 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.