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.

“Und die Qualität der Karten gefiel den Empfängern.”
Google Play · 5/5 · 2026-04-01

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 2682517241

Proof data

Record hash (SHA-256): 140b2e70397dc0a104ea9f3628f1624020f86caa8f4f8bd5dacb06f27ac7faf5
Signature (Ed25519, base64): +AlXLXUWJnksi6XgJu0TqVpQIdGwbeuNGjAv7NgVhtmq9LVmHs8Ij03lFsBnBUHOSwXKFto0Hv+LPy6HGzlvBg==
Merkle root: c280d9ed12ff4c0b3255dc7898b16f1930cd4119f42946bcb4cd68d076a2b332
Merkle path: ["140dabb7dabcdc3815d5fa38ef5015b17cd62e76e5ed31294e65be3638f89fbd","22faef5fbde464f8388becd424c6f91fc7f1cf40f40dd48cd024dc9fbb639f7c","7c0857dd43d54d28e8b9f6be0dd22af5c4d058d1b04f531d7f581f0ea44d4e73","5015a046c5e4735b07ced649d209c191198098ad238f304566737cf02a5ebf49","acb3a4451a61d4bf74fd57cb4fc219458f585fe86c3f0c9270ca7682204a6a90","f6d72399cd1b1395c18ef6d884401628679207e4e09aadd23c8a2f355f7de1e1","e608218c5b85a1941fb7643ed3f2f14b8a6be0ffa40564aa65b5f90588c64af9","6c13b8b262847dd8d7da63d24e582a5b17890b36e87f236fdc5362e067d6088b","9e1bd4f8fed3c04c1e830963c270ec2b56d7dc1fb02af100732ee833c53fc8d9","a936c478cb006020f4baeb9cb2c7a7724c4ed10cb1a3f8b3ebf23d10a9dfbb90","e3a79915a3879ad8716dc470587747d333f9915bb4463272f8889d94bc3cf160","472a46e5ff22ef13f95849371f5e56cbe4eff8ebf99e8a0d25beb8257d4ebede","420b89a5765bf5e1ee3ca525653a85d95f68d0a5f95e1e3aa883275c5f706eff","1bb9d77697b03c52c52f610920bf29cd71b9d55ec5c24ed66e499e51e9290526","318e458e36dfc92952cbf790d510c87679554507275d835c305b6eafec626494"]
Anchored: 2026-09-02
Public log entry: search.sigstore.dev, log index 2682517241 · entry 108e9186e8c5677ae940…
Expected log hash: 4dd627b405b5e14bbbc331be73be3f78a12bcfd7daf600ed87868080d5d2f664 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":"v1788316240490","kind":"published-quote","locale":"de","page":"product:pixum/fotokarten/de","quote":"Und die Qualität der Karten gefiel den Empfängern.","rating":5,"review_date":"2026-04-01","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 (c280d9ed12ff…), 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.