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.

“The app is very clear”
Google Play · 5/5 · 2025-04-22

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 3140838741

Proof data

Record hash (SHA-256): e9373d12a6de216119bbffe4c01854ba0202e1cfc4e55663be55c702fe3b644a
Signature (Ed25519, base64): Al3E+7+Ql3GFX/nzsCpXHWzMYGYF13nnAADOSSgbGzvKrXyEHLGrHfkucsZyXtnDkOvHvT+Wqh0YF8u7OlabAA==
Merkle root: 68ee5f8618d9ce1aa33f2cb5b6f3145b5f909a3c35a03ccc3d10e979b2f81082
Merkle path: ["e935589e733d0f678fc4e218cb94323776e8d3aba0ab19d409c2daef3ae0bf5c","8bc56a73b5cae765a9d7c027730bb0fa4f855b63084c230fec148d07d34c4c80","c396c09ddc014550b7fed0f7e988bebcbd4fe6e915fa6bbec032250d1d23be7e","d71e6f434266c9c89a140e41cfe06b5989ffff6602cf1c46a4529ab267786933","ff207464aedd78ef7c40a8365600d9277ddb1509f48f9115d82f7ca3e657ef01","3fa5b71b69906eefe2d4d7bc51295af00ff786689fb1d5bced5eef50b5a3e73f","218abc9ffee170f99c5a073ceefa419acb305090cc7982e4c77c6972ef8d3425","daac6123ed00d0278f4690b0bfc29dc0f8a07d9b7638ed2ce46aa69adfc52254","7b96eacdccdcaad84db01a5189e269c0da54abe17c0c8d13bbc9dd196d798b46","94f257be25de8d404a9b9cf3b50c6e342103a7d8707d65174871998218a0fcaa","464a5c9763b083cdb878760bbccf8ce7b3c77eea6088139e0496bfe1ebf8fa85","f406154aae2c44f1794f6b50643080ce6a776c688e18283a272eb008f69d5ee5","662e3ca042b912b1592c5eed9922bd681d278213ed7e0626715348f767464eb2"]
Anchored: 2026-10-08
Public log entry: search.sigstore.dev, log index 3140838741 · entry 108e9186e8c5677a4791…
Expected log hash: ca4949400cf2d29b49789563ea2e672fc73762380548d6fd65398e40c0d98728 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":"v1791433229105","kind":"published-quote","locale":"en","page":"brand:concordia","quote":"The app is very clear","rating":5,"review_date":"2025-04-22","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=ch.concordia.myconcordia","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 (68ee5f8618d9…), 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.