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.

“drucken wird verweigert”
Google Play · 1/5 · 2026-08-12

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 3272785693

Proof data

Record hash (SHA-256): 0cb17e044ef05eb33cdfcdd25b0b422604e3f9397d82d48ac7dcd5be98dd5d4d
Signature (Ed25519, base64): Lj+uOsc3b6lmd8ajvCV7TSEl65LjMIcvnRrcq52s/Z4DWPch96y7ZWOa+X6VPDiK0xB90Y9TpTRGOWDx3lJ2DA==
Merkle root: 42ee8ba4b974d737f78b7f168d0af8ea0510697ac4ab4c6db44b5522bd195660
Merkle path: ["0cb38cd309e6b89d4aedb326ae3c17ae3eb592ba9d8c2816a6cb4d5bc839524f","d3628108b46964d95945f4b5a7430a20f37209a6a3ffdcf26a2714427ea9348c","0965e91fbb42aefed271a710d6ee0ee57017b1ebcdbb55483f05c819082cb05d","7ec6af296ff5dff4d0cc08c876ab48f46d555a39e72e4b9d59561be1fa859ecf","769a824a9c70b59862a23b7c9d3d5781c18392480c5055fec9a7b85ca5c0ae16","79d205741646ab42ade460d207e154db993c2fcda7d519674646dd7790e80e05","692e126570ef4ae0cd826cfd52b1a189d2bdb905d78f78f6e37979b5bcfbf5a9","65dad6f36bdbc0e68790e15e81204e66f91b9fb9dde8f2ccb8651f1ebb20229e","f4525a467f9c2aa16875c9fd93704226a3a84b790ff34736ab3268ef3e1ac718","e63c273a88d8c08d0d42b4f5545e32cd20a9f2831f036a5044715d4fe8d2df2c","d7d6aa0060ddf43900b4c89a5341fdb8b45cbe3c238096077807e6e2f587a8c3","5f15fc19c161cf1b078cec1dbb446ebe0ad796b02ab5da46a3b86356dc6581b7","49dd732b74591111793e90f822c8febb6b4e9dba2f427a61f4d9f7035d4c82e9","c77ac7da32c6d4db47aeb73e606322601c1bed1566533de53bf56d1599928d0e"]
Anchored: 2026-10-16
Public log entry: search.sigstore.dev, log index 3272785693 · entry 108e9186e8c5677ad5db…
Expected log hash: 3b93391ec0595ab5c0ff73f2540eb1322f56c3c1302e6789c57b97c74423deaf 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":"v1792118508353","kind":"published-quote","locale":"de","page":"brand:acrobat","quote":"drucken wird verweigert","rating":1,"review_date":"2026-08-12","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.adobe.reader","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 (42ee8ba4b974…), 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.