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.

“Must-have tool for handling documents on the go!”
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 2904877428

Proof data

Record hash (SHA-256): 1e921572ec8115b865c0e14786e91502809f6a876c0f50b4b2d0c457050b4176
Signature (Ed25519, base64): mcszhD/lliuCFegvxKPWZQlFmFurA/kFm65zQSW5kDL9dWpAEsKQHm7OfFlfrH5300DacD8PThPMfqudqHCyAA==
Merkle root: e299bf38720a5a91bdf63bbc0205245bccdf3432ab1652c69342549658b7a9ef
Merkle path: ["1e92bbb623edb960876aff96c112af7b46013cc597a94d0e658f564c79c5a364","d59f36d058916911c5c632799678c0cb01bed31d2650aac9513c825eaf9e2add","4bd4757c7d3fe24365dadb3d2342a2f2f7596b68a7fe414287e1a1b21c3a08e1","73a2a892be2006e27e796e39a499f9a9b43ddac21406b801d6d23ca26d938596","f453a07498e31ef272a14f9ff2d00544d66b5980e755738454cfd6d896d05103","014a3328f9171cc78ae0539c3f37c9adf3a77f51c4acd16c4cc5ce3f4a6377e3","e19ac8b0ae1fea12bf742e25157de72f0d1f99e50ac48b186bfd55bfa39a9573","2efaa94dad93f30e5656c53f035af6e0e493acbddc0fc114c92f3574e5982911","e7755079c676d7940f28524caca145fbdfed23cb2b5bf1279233b52d9c87ef3e","194fce6287f6636217967d76a479222fd43cc8e70c19e165a2e9a5c5c64e63aa","4cf64c3b17b250809476ec58bc3e326d674084347904af4393f609765e98f831","31f91261e54510c82e0f505e928dcd01951b5f1b3bd1a4ebc39a5ed954368324","e3c57a8cebd6c96ff44fe2cffa20a59e203e20975780cfe446c93ca7bbe448ac","2e838893ef313b8ef0f87568e1e691fc197dfcee84413640a12968493decac73","bce5d442c07de6307e5ea8947098e74ce88c2246eda5e5fc1015a6d7519228a8"]
Anchored: 2026-09-21
Public log entry: search.sigstore.dev, log index 2904877428 · entry 108e9186e8c5677ab408…
Expected log hash: d020708737f55ccdf49203f373fcbcefe8158cc388605556fbfda3c365de7360 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":"v1789881486272","kind":"published-quote","locale":"de","page":"product:acrobat/sign-pdf/de","quote":"Must-have tool for handling documents on the go!","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 (e299bf38720a…), 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.