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.

“Man kann Fotos kostenlos verwenden”

Checks (re-run on this request)

Proof data

Record hash (SHA-256)
d8ea193b88cddd2a0fbc239c3854dff9d65af5c8aa75927941e41c08bf652b77
Signature (Ed25519, base64)
rcjz5bOGZJDfYRS1qc45O8xdvY+iPO9d8M0BOKM1Aw56c5pbxWcj3c7HjfAGz4SZXRgb2/tsQjMiRtenM8dPBA==
Merkle root
b9a08f9d6d76dd148110a496219c42cf3205c6f982800d84d5c85d77e9461e02
Merkle path
["d8eb2980e0b440d6474351b2f31e20882f101e2e6ddaeb418d0a167f445d7c4b","4010fb014c76109905e218c81b6087d636f954ca334d15104ea2e951b033cc4b","a023e99bb8d91f291ad4bfb79b38fd3e3ff93b26c732dcf78cd086588023d8c0","875221cd6f204a6b5fd6052824828cc341e78be0a09a62247df33b4a64ea5144","3285ce5164190fdb40763603ff570f899ac280ab98574402082ac42fc011b572","f9db2906c60cec0f0438899cb12d94f8ff22cb2b6422bb00c32d96dfd06a5ba8","8c7ae55690226c51cb2c0567141d99f5f0eb1dcd0963978910e1387c50d9be16","05ac57803bc5cd9dfc90de0ff44e7504e5b006bd557d1a4bd5c22fcc772ddf31","f7384021a197e13f40259eb4c775c70f45ebff0b746b2dd83fdca9544f4fbfd9","2bb5ff656c7973cdbf520df3c851c90c28841be839fb931187a0faf4b7c86f3b","d724de4db852592012d7e350c865d36fd56f7f3bf918292f4d807bd4b562df22","2d0841904d905b327cb803816e73e56fa86447bd28a90f792c27c874ed9a6b9c","c975f4076f62a76765a4bc502e988829db65110a1650004b828d2dfb5f90a9da","f92a7fda99af63eb008476cac47b147880eec6868f847624f8b438c917195408","4543e8b9ac7bd077d9526acfdae449f0a0d5517cbb42414f50ef930ecdb9470b"]
Anchored
2026-09-22
Public log entry
search.sigstore.dev, log index 2907673729 · entry 108e9186e8c5677a06ea…
Expected log hash
bf9a74000249ba6e66b1e29aae9d8cb95c3400dc118569a80e5c0949f3e8ac62 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":"v1789969984102","kind":"published-quote","locale":"de","page":"theme:vaia/price/de","quote":"Man kann Fotos kostenlos verwenden","rating":4,"review_date":"2026-09-09","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.studysmarter","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 (b9a08f9d6d76…), 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.