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.

“only problem is the app size is too large for its purpose but OK”
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 2525257308

Proof data

Record hash (SHA-256): 6a89b68526fb512335b85c2bee7bdfc2365b2e36ad751057733e42d359ee9969
Signature (Ed25519, base64): eJM4DO/O8pBQrtUxTTX2bOlt4oTkL3JB9GbwdrwT6OW3ZLOlXqXJeqMgpeLrfAsFdvDnN3Ivp5jM06o5TSMpCA==
Merkle root: bdf558524b6fc08556728f259e0f09161d4626349b700d7f30fb50b05a626ea1
Merkle path: ["6a84d2f61b1efc4f185efe6f9aab584e28eb951ee452fd26d461d03f8e292785","f601e71090d2706d0a09df613fe76697dae2e38902c57b56ada32d25f69c6f20","f0ba6ec6b1738a887361472fb2094cc28408db30a1c2563e02980b20f0e55036","41ced7916bcac123c20e8025078ee115372daa50d22f7a3b3d6b7053af29edcb","239377a9c09a2dc5159b0cbc87f7a57a424d1a7efcea998d2886f8c49faccbb8","2e8fa67c1ca80ec9be8ce6c2e08ce8445bff491a7b75592809d9a544a066ef85","fe64218ff7737feab603faa594e6541916f0a452d7924f081ee2a3a53d5c9959","445587ccfd813a294d9f62d815993124844466d5db7ef5292d49554fad152d17","7a7957d9df10a67f66806fc9c095786c2488f5966bcf5a2437854f76a0fa472f","f679fec89017fa50f6bd83229aa5054a291879be9abb011f3b75408b6936d686","b994b3415d0a593a0297e4582c9b84775751e393fe5643dc7ea40b2437cf92b9","079d9cbb614502c91ae64f6b44133b3654a69b7111651c8521775e87805a3bf9","eb1cf819ce45c15462a4daee7cea14e45935677491385f66e3842a303f17a540","8e9594a285d2d4b46501008fca51e6cb82167cdc77c21a7232826a5a1f448c83","7c1f9829e354481f51c5a693ce64e17eb8bee61cee659bdf8b794fb330eb29d9"]
Anchored: 2026-08-20
Public log entry: search.sigstore.dev, log index 2525257308 · entry 108e9186e8c5677ae552…
Expected log hash: c7cb1a1a9418331323cc64d3f101e644ce5e79412d6e55a22a9342e33025b7dc 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":"v1787195935480","kind":"published-quote","locale":"de","page":"theme:acrobat/quality/de","quote":"only problem is the app size is too large for its purpose but OK","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 (bdf558524b6f…), 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.