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 is really helpful and give understandable explanation of concepts”
Google Play · 5/5 · 2026-10-06

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 3220562278

Proof data

Record hash (SHA-256): 4fe61fa0fb0e5133b8f612cac2d94198145996a0bf880b95c4636466a899e9b5
Signature (Ed25519, base64): /6Lt4oJnzW2gI8UcaqYIBNShrd0kwYTis94vBrD68SPFXM6vYVM22wVZOgR07Sk3KzGVakzketDa8m7ODDXEBA==
Merkle root: 2d214bb14438515f4bedf5edd9b00a6a5113a016ba9b9fe8160d41d7e6046722
Merkle path: ["4fcf1bf4ba5c3bda3f1a41a00124895080acf8b3222a12623d8550c8a6e3277c","79fc4382d32bf2d053fa98d36e3b32694e4771ec897d24b3bffc9f3d9250c434","d10aa2c91684d9419d1eaed8474431cb2a7ca7d6df9aa030322e8bffb907d430","23b6ed790b2a70bd42626d885bb72e823ac6e8e56cd19f0abcfd70434b31bd1d","be4352ec9ec947bb148badce07f9199accf052dd43076025cd607814b6692d37","7ca5afc0e985bbbe083ac83998dc5a3682a00069de7a249bdd453aad3f6e9c86","ce47651b94c741c004ebfc79b16d53654db95ef7578ac7126e425f079e46ffec","c863094170048e6bc9cb6484817dd5e245e49aae6e8a651ba4962d26eabe7aca","4c934a0518e0d85dcfce994b197b1122b8099886eb4786a36f54027a709360e0","5a7e4e1a963dbccd6dd1255a198cef96d5695bc0e8e7231eff36c8b88b0ff339","99018faa5ad0d28664cdf895a0d291f9e9325e68283ffe73dba89bb27fc962ba","23123a46a6d30e0fa59a691fbe1dcdcf32ad32c111bb8e37438ac91b1152017e","184cc1e2f93da59337f7837161587a67303bd364329773d15b922bec0848e3b3","35ea2df06612b261a549235c4e62b3e1ad1789f05da56f9ca671421e5071b72b"]
Anchored: 2026-10-12
Public log entry: search.sigstore.dev, log index 3220562278 · entry 108e9186e8c5677a2753…
Expected log hash: 13907aa3d3da271016c4b5e75946c4440692c6b4e1684187b965dbb983b157f7 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":"v1791777669660","kind":"published-quote","locale":"en","page":"brand:vaia","quote":"it is really helpful and give understandable explanation of concepts","rating":5,"review_date":"2026-10-06","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 (2d214bb14438…), 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.