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.

“very useful app for study”

Checks (re-run on this request)

Proof data

Record hash (SHA-256)
69dee24d4b7de41a067e9dd89b8684e11170adb3afb294fac12589df67a25a65
Signature (Ed25519, base64)
rINsCL3dEqX3nEIZupKNFr8k1SjbYruV1m8sxiVFUnagsLhdR/hve0GrRgARz19LapV4eDucCr1Al8wLbgqNCQ==
Merkle root
790984da83ec061260aa072fed7636f9dedf91964fe0be93d7a7a622b2b5a92c
Merkle path
["69dcd67c0654bb7cf3b6168e67bf2310c86f82e66d67575621d13dc44c6f1910","e29902703a3bb519e38c90f20d5b3bf28f9ce9f7f1f9b2df806858ee2e502afc","5ab6a2abdcfa86ccd512341da63b9a5583637a9086795bd8932c1622b337361d","c8c1f6f55e4adfc70ead6a49c9b2d644412cefd1c57363aa68d3d67b24a6f852","ca23fc653cb33f310ef85f269d489e6e3b14dd0de25a9015628849022526c655","95e82d44e0df24e800c2b03000765465adde1b5021d230bdbbfb086907e3ab31","1afd298b2de039b1e33b6f0ac345b04b499e07e1d3d04aa2d9337fdaf21bf9b6","ba3426cc3b189d7580db4ade195fb8f177704a631f9af36d419f0c7042cea6c8","b23feb8103f878a4f2ffa8520fe50290e418b550783501a1625542f73f83e317","a71d4d37c4100572ab4d2d2c91c8303d7966b7ce707956f61e07695f69478f79","a0fbbcf462ffc4886579e3dd0ceced43a9ce73cdecfadf6a763b154492128976","90f0a0e3211fc23b1e8db52b76383f6519eac469757414a3b9d5875619fb9c0d","6119aef4031d03205576aa94cf7a51dbc6eedfdd420d909f325579401c8abd0c","19cc354f6573191d4e7914f94cb811eea176897530d869ad83bfe3cb7fd5f206","c7feebd3045cc2c03d87ca1241b2d06259ffad35db645c59ca3c5ee2004a8947"]
Anchored
2026-08-19
Public log entry
search.sigstore.dev, log index 2514496096 · entry 108e9186e8c5677aad27…
Expected log hash
5d2238ef768473286d75355f523ab94503f4ccd3d25e17e9efb265aa0f540183 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":"v1787129810322","kind":"published-quote","locale":"en","page":"theme:xodo/quality/en","quote":"very useful app for study","rating":5,"review_date":"2026-07-26","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.xodo.pdf.reader","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 (790984da83ec…), 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.