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.

“Tolle freie Gestaltung von Fotobüchern direkt vom Handy aus”

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 2594412582

Proof data

Record hash (SHA-256)

133cc88e3f0795c9b19b9e96cf0d6095fb40331d98d2341e63fd5c2198bfeee4

Signature (Ed25519, base64)

KsJR5/gPl4sDp796gAsH2T9D8gPRJSk9DKaUGMw1Px3v5mGQUuDHANMo9A0+enWv6iSezPyiuVvlSugGgS14Cw==

Merkle root

d414e521fef9d6d099989fa0d693684c20b42a89a12033fe1adae5ceadc28160

Merkle path

["133dbb410786046fe6d61e6cc9d324abe3df8840826dbf8b2e16ef65b8dddaa3","8d83edcfbc4d8282f71dad3472122c7fb53c457a2999973a2b21be2d6c9dc663","baced2ef1e507806ea30ce04eeff9fc1116ba75450f13290ca55cb8d300e8ec5","2ba822583e10c5e1a69b69011c5c5ec3aaa3144805f2687ce9eee75fd273f526","6084f34a75fe76cd7a4f12756e089dd44f6644062cd931661ee06a27f6203b45","fcf9f6e6d1c88203d8037f9f0fde3d36f567cdf4a9b8316815aba2ea4a646e98","97aeb4909c08fc9c9a54786be373b3c0425f14cdb6d167b275b57e1e6f1b0f13","6ac1cda0bdf9fdc88a64ed584d5aea85820275c6481cf31a773356e8639baf8c","bf474c1e055dfd77594e61cdee37d32b259eee4e7c44aa482ffc13862d1b1736","105dd290a52e0b7e236ce257fbd239734ab7d8558a31c7d0e75c8c45092723c1","42e7f0dee6bf395a8b5dc7e30b49ab5e3f2abe6507684358ff96452a664444e8","8fae7514a4924bfe0cf5e60743f69291a922a54a6ba19c537fba85dd4397db12","f77efd58ae82cd437163ba9ab021e9fb524c058feb0d1f3bc5d429c056be2720","dd85a03194c1b09d93a4be119d3146825d20c9e375d143636eff256904ff3e25","d9bed3bb20fbc734967be09c1cd24ec9d5bb72fd1e4fdf84e6057ce858f8bc78"]

Anchored

2026-08-26

Public log entry

search.sigstore.dev, log index 2594412582 · entry 108e9186e8c5677aea33…

Expected log hash

b1897d255cf944fc063c3044a4546ab02c40327197d891ce843dc1c45c2dff03 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":"v1787713855428","kind":"published-quote","locale":"de","page":"product:pixum/fotobuch/de","quote":"Tolle freie Gestaltung von Fotobüchern direkt vom Handy aus","rating":5,"review_date":"2026-08-16","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.pixum.android.photoworld","v":1}

Verify in the public log

1. Open the Rekor entry (pre-filled with this proof's log index).
2. In the entry, compare spec.data.hash.value with the "Expected log hash" above: it is the SHA-256 of the Merkle root string (d414e521fef9…), which ties this proof's root to the log entry.
3. Decode spec.signature.publicKey.content from base64: it must equal Citatio's published key at /.well-known/citatio-signing.json.
4. The entry's integratedTime is the independent timestamp: the root, and with it this quote, existed no later than that moment.
5. 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.