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.

“auf meiner Mastercard 90 Euro "vorgemerkt" für smallpdf”
Google Play · 1/5 · 2026-07-10

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 2621523249

Proof data

Record hash (SHA-256): 09230f6eedd986fab662c04ca126715b99d2d3eac0663860b58039591434a108
Signature (Ed25519, base64): JDzoR9XXaqRih4G3T0lHJJWrlFxF2k4XCRvXqnG2iOa5DDEyaBMB7TsMoFF217hBAE58jbr9mkzfwBmesK2DBQ==
Merkle root: 6471d9991f0d0aacdf442d5cfa660f2886071005e4c3d26a992a3bf38f0a7695
Merkle path: ["0926968aa8e6abf29b9faa49e0f8ed59602eae1a3013ba344b7a323521eed3ab","4624d75a49b8466165217705998c440cd23c7f6e834e7118e0d9d237b3207d62","d015825c9ad0f0107bce50731f26b615cb9f8533a7cacf645a1a061f497dbd7c","3482778326098de0b703e9a10d79e00b8f133cd640626b857c56b199d3bf220a","669420a295f7699e0aea9bcf53ba134b3579cd385ea62ad826d0309be5591065","1e110e2b68dc7f708096d1148a4a7adc98e753347d2825bab690bcc9b3159703","d772109007f4c870021f6a454a4b2ec1a4f3a0cfbf6425d44bc066ca2186691c","80b85f9fd0e23c3de19a22000000dedb1e6e90ab9dd19b6f7e3d6ea90c860dba","15886212464b74dcd197e868117397fd752375a517ec1f6d8e87dc28dab74875","ef8b0691c8db614afb1395e46c51a8282c3bdc9f1ba42a9414e19db77d2c6196","244591618cdbcecf52d02980965107e183669b9ec87e3601c5ba666ffa8e2f4e","3b30f3c4384c8f930b0902f0837c734e0f4d8aafe820711619a733e25c756cca","f3f4254b899098b98c7590d670f5fc0f992a4df0218d6bbab4ffa5ea42255835","930b7277e2ba0f1d182f8e7d0daf885f1526e50b29d8791024858ea5581e285b","a2fa997090d23b1f352d383369eee4da3a6661cb0956969a3a99ec5f82390d95"]
Anchored: 2026-08-28
Public log entry: search.sigstore.dev, log index 2621523249 · entry 108e9186e8c5677ad576…
Expected log hash: 644ce1c7a13e9edd388468f8e29bb74f49a15185930851951709e16eaf23744b 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":"v1787888369667","kind":"published-quote","locale":"de","page":"theme:smallpdf/billing/de","quote":"auf meiner Mastercard 90 Euro \"vorgemerkt\" für smallpdf","rating":1,"review_date":"2026-07-10","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.smallpdf.app.android","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 (6471d9991f0d…), 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.