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.

“there is a flaw while opening ppt/pptx files”
Google Play · 3/5 · 2026-07-03

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): 7097df2a350fb4faf488c719b5bb848e106d19898ab6c9d61e986c21b9899973
Signature (Ed25519, base64): fqo7Tlyk7qNrMpDsUNc0cd6E/QIFUtPjUa/P0pQfQzIuxDw49AXt8OLZcltK+n5sQ5z6O8EAI+GRyK28dHXuAA==
Merkle root: bdf558524b6fc08556728f259e0f09161d4626349b700d7f30fb50b05a626ea1
Merkle path: ["70966e2a360a247be9bd7e57b903eb820cfe94f77b2cb9e6e8d6ecfc371291ed","5188dc59a67ce1120fb39a4743396abb9c4b6db65ac74c98ac6e069d386a8bfb","abbcc89d5acacb627d6998d549a22bdb9e26ee54538ed7b956c571938fe55303","093abaca08eebe3cad648e84b4f65e9dc9e46355678dd84c3495ca602edac615","1640ed42b846a8e5a286d950eb225f22be3efab782cc3054613cb77782adb3ee","ea0722150deb0e1e49f7e21532e3fec7fc00080a35303275b2f6a830cf358551","80fd3fd5ad14927d302aa09b92fd31d43ebad9cfb0dcf46a743dbb4608888de3","29262d9e0b1efdb7ba3ccca0025abeb00db5d80bcf1eff07446dca807742e03b","0ae794c0ff40250cd653b5ce4fe2fb5dfc40e6f45471f667476dc31e5e183b95","38b66d72dab61ae22f6c29960a623ba2d5214244e874aaa5670f5988940f0397","d3ba1fb06d3b88fb4a3ee519d3aa9764faa1173bcc519c356b442527317fb741","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":"en","page":"theme:xodo/durability/en","quote":"there is a flaw while opening ppt/pptx files","rating":3,"review_date":"2026-07-03","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.xodo.pdf.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.