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.

“It took me two days to fill out some paperwork using this app.”
Google Play · 2/5 · 2026-08-26

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 2907673729

Proof data

Record hash (SHA-256): 0a9dbba15c48728b13be25e500bb51f1f3e218a77ef027a69dfb31ed7c2235c0
Signature (Ed25519, base64): dbpYdfq/lXTBzH/S96I7wL9pbweg9Ge9bnEgJ3NuQkAFNDGRH6quJ0z3dt0ojtiY2nDhNTXXoivBv1OKw+i7Bg==
Merkle root: b9a08f9d6d76dd148110a496219c42cf3205c6f982800d84d5c85d77e9461e02
Merkle path: ["0a9e7efb2788bb6a91b3d36c0f6b7bf5b23b6eab494303477b7e58ee4b85342b","7829b5952ae3023c56f1e80c02fc3ef30f1e998c88b2748d8da67cbe0039bfb3","a1fcec07581cf43065a37749b257d0f357045fa06e32230c4cb23704bab1739d","24f034ee171283fe0c89169b148174688ca614495e196e7fe3292c1445ffd908","8ada0ba703b9337567711aaee836dc5638468e4741623f69c8e4b846483f1b36","fdf222a36a4f583cead1f20b28cd50b3e2acdf554f9afcd3630cce5b9ea82420","1375492a3814514c545e76403062b6ec26e0fc9b6a1c5ebca5b1b2fc770518b5","8edc855151a3bd643cabf998ca8ba9c1dd422a61d5050345ef12a8d53a15f3a3","ba5763a90d12a099a011e943a792f87b5aedef02535875e5c1c4db030474882f","3a6e995209072b3e1600000c68578eed9a2f9191f024f1c2118a0da8f4e6ec91","d4471b161c87e50fd38951ed2e211fe04e6d9ffdda22d17889f166869c99c4e9","85daadc41544f83be69d5533c0c879f1f8a6b6c7e356bd7472ec3f624cd585ca","38643099e759f6b9db1dc190b469982c0e70d71dc8caac721f2a46ded3b658ea","7a4792c9dcf9466d19ba61ec3efd4f578e21f2d3035e8fa6a6264d3045083f7e","43a562d6822dab12c673c1efa0a3171d1ef69b949f676fb01847e1e5b56274de"]
Anchored: 2026-09-22
Public log entry: search.sigstore.dev, log index 2907673729 · entry 108e9186e8c5677a06ea…
Expected log hash: bf9a74000249ba6e66b1e29aae9d8cb95c3400dc118569a80e5c0949f3e8ac62 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":"v1789969984102","kind":"published-quote","locale":"en","page":"comparison:smallpdf/en/cat-convert-pdf","quote":"It took me two days to fill out some paperwork using this app.","rating":2,"review_date":"2026-08-26","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 (b9a08f9d6d76…), 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.