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 would be spectacular if it were a bit more affordable”
Google Play · 5/5 · 2026-04-30

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): cbee34f8d6519b3125f08ec5652afdb2b5bedc34bd0d06a5760e9e6326a2e26e
Signature (Ed25519, base64): p6VsATSw14gVFiiKVzWEKSbIvEz/yuAzVFjwEvBflMwXlViD5cDx7cZMOYleyPwTQGlJir67MEW47EKpC1S2Bg==
Merkle root: b9a08f9d6d76dd148110a496219c42cf3205c6f982800d84d5c85d77e9461e02
Merkle path: ["cbf10a7d05d3ed1dbf2e8000e52da8e1153227b193fb6d3659228573cb516fad","8d9ebec74a28c8689e013fa0f1d32d691ec8a984f16b18f8aa53307061eaef26","2fcb157325f0838728092ecc0353a970e11cf7bc1e1ab086125f7e369d9d2748","c30be34a49e273f81f7f2495a63cd4cd0b2e3979c5c82d9b20ba60c0d2ef1e92","e82c0b60215029583cb2cef7352920669c3386d35353a2f21ebdac00c5f2b258","8f9c4ac0200380969577d112b5d974a9d7ada1c91820e207d7225ee3b005e340","2ba186666948980545781e2fe5823aa8768ce911fd4c94ce2d29dfdda440e578","a90130d85ad25bbb8dd337b3716e9ba3b6e12e763ba2e53520c8c2fa270f7848","cdb8a258e1b80b3ea1d12753ce407e07e32c702d7fe7a909eea52e6d4f51c823","a42a21c77f0f0d8f54adcb950626a5c44276eef1210ab57b5a18ec668122bdf2","8401b8939dcfb94a48793e7552a885657c9d52892d88c0004505559f51cd6d5a","1324e7f8581b1cc3455b81e88efce3958a5b23eb7205ddfacaf930e32b10bd47","ff0ce3b59f4b6fff6b806e01d20d764fb2b7a5651693c19ab4bf8a8b5ce5f968","05978e8b9ad5fd39833c65b8b951e8c80cf426334c441fa8a8bff8eb8eeaf534","4543e8b9ac7bd077d9526acfdae449f0a0d5517cbb42414f50ef930ecdb9470b"]
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":"theme:vaia/price/en","quote":"It would be spectacular if it were a bit more affordable","rating":5,"review_date":"2026-04-30","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.studysmarter","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.