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”
Google Play · 5/5 · 2026-08-16

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 2682369737

Proof data

Record hash (SHA-256): 17375991edfbe7115c5acbe51793519f3d3dc996fab5a8c8a0b5f83b595e5418
Signature (Ed25519, base64): cpIlSPAjr8QGRJKGpQDBH4F6th2EDpv8MwQmBCuX1vAIgiP6mOfo9CTql0La2Sse0IMNEEnLIxTMHcbySG3UCQ==
Merkle root: 596f968cccc56e8e000b63b9dd30489d92d97de49657c3c152b38018ff4fca5c
Merkle path: ["173d02ef5ca39d3b9d1958717de38f8cb00ac76970999d9a9044ce8596382a29","5803c5f5f33037b156a9f6980e5cd4c07ef57c6c545f9ed4df4bcf7071582989","cf317ea250cbe1d9af0374aee659f7f58fc843eaa26f83ae11d3cd9c33940b58","3d57315a02b3e30277d0a351129db5d691a80ac915d8a72243711f4911af80d9","6908a42c035020a18fa0cbfb3151713ced93a5d50680f848ffd5f67f2570605d","3a8505543eceadd3d17153c85012d94a79de25c10a635b14f1f009d537336319","06c9e521fc6dd70d27329ef3857a2713c046f11893376dd17a5d02ad69313d3f","635725c0c80688c603ced5b39ee5266eebf1e9e306e7c062b3a8a2e5fffd717a","87c89ce49d18ae57509ccdfbc6025b75086a0de4c23f34d9da6ac73bf542d80e","325b715c28e3cf8372fb66a4896cfa9e37d1b2184f5711311d4f16d4efd615c8","3dd4c2333412ba9cd2092b809450e5c444abbcde28ec07a4270fcc306ee1a1a2","6088269bd2381f7beb53d06702061f26bfb7f7a5cdccd5f4bc49389c7efef48e","8e868d52b37c0ca851c758cff6792552e789a45811741cd2ab35462dd346c599","f34a99bc2eb0f4358a151b675878bdf5ad21628e2f02e9070ad22d026160a11f","1def65a8c7022796c92bf89e3ba0ded5702ff898262447be3bcca696fe961465"]
Anchored: 2026-09-02
Public log entry: search.sigstore.dev, log index 2682369737 · entry 108e9186e8c5677a1ae2…
Expected log hash: 21add9acab3ef5374d6a20f71e18493c941f530ac81d350c83b699eab93536cd 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":"v1788315101182","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

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 (596f968cccc5…), 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.