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 helps a lot with memorization”
Google Play · 5/5 · 2026-09-16

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 3199014646

Proof data

Record hash (SHA-256): 311b100e032581ba230c47cb362506586943962249e927fd0390f247b8814239
Signature (Ed25519, base64): 4xlnPPBpGImEDFrgzmdmc0v7MCOKEzOrgW4CSPeWFLyFtxy0DYl9m0MNeO64R0VWHs0taoBoHXmnWS8UauQEAA==
Merkle root: 79268b3be1e951447ad916daa23d94d3a225505999279adfec84e5728be030d6
Merkle path: ["310b8782a8baddaa5ffb1cca25674d310100a5397ca70d31ca3d322b33cdc25e","c105f3791fa38a3a14b5374209d954c613bfa8112fdd8fedf938429d2a423657","6876655c9151a38ccbcc4148dd07d88f6c9d7b97bd8287ae3ee3fd201ca0eb75","03008a01ed12f50c5df810a245a87f5b0a0bb75bc4d1e74cfd4ed4a181da4106","445cebf3d811eaa0ff5663d1b0b2ceed9e6f0dfa372ef4e37ad268d8e288b30f","94517e072babac9195848bf0d3ddd461b61bfb54263d25edf5a6f42eb1d4bb05","5baf2cea3199adebb36434676728e430e13f2addccc11350cab71e7b57cae340","b061e7ca411c29a2fbf4ebea464c0491a2f22a252a3e86b055a52a4cb4366cd6","d5f2d7ffa49519ef3737c5c67a592a24ea8ac8478db3e1dddba23c5f35040d3f","b68873e9a2a95d4357461d6761c07036150d6d1653187c510af2bee2cb5c5c40","5a1e1b396c4abc5f483318c0b890917f1ead6301ec76c4fabaf6c23b0d600b19","74ec616be75d7ddfa42f796ae5ee64734ee2aef3c18f854d94e8278d3c2de665","ca0926b42bcdad354c17320adc5661c1a0407072f1d5c01424cc2e7f9a3515fd","b8e0a41590cdecf5ee846d5a4dcd3ae91c8a0a052b75fffe7c4c5f4e2ca53884"]
Anchored: 2026-10-11
Public log entry: search.sigstore.dev, log index 3199014646 · entry 108e9186e8c5677a77ce…
Expected log hash: 55430b734e4d00e4ba9c340c7ab064436f91281dd4cbc27c1ffc37d3e26a0e3e 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":"v1791688566698","kind":"published-quote","locale":"en","page":"brand:vaia","quote":"It helps a lot with memorization","rating":5,"review_date":"2026-09-16","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 (79268b3be1e9…), 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.