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.

“Auch auf Tablets ohne Sim-Karte bzw. Telefonnummer nutzbar - das kann sonst keiner!”

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 2543154575

Proof data

Record hash (SHA-256)

6933271d377f2cdd912afff3c50385db0d9c72ce774955a1dccb522cb5cac156

Signature (Ed25519, base64)

NN7BxHl5/QCOm0rQP4kz9KagP8lmwVeTqBXoC0nB4cTBiW0fi90SiJF03o3QsB0tHXet330E+Pu8nWdb1wXCBA==

Merkle root

9ca8f1c1ad15a78206ceaec922c537c0b0ac598e12c9c25877f5e0e19de38c6e

Merkle path

["692da9da02fd8713dac8f21d8e93daa7cbc05f589dfdc3c85def030d19dc82a4","89e577326c363cde5aa93606eda801638107720d9904e09c798ad1a0f400c6bb","d09cfb24e535877e264a25bf8b82c5c3201e2d52ae4abf15f4be2fa093aff3dd","5100de413b46535a74f30d1cb5bf511f2151b13ef8f665bb80dfeee6dda277eb","cd859221866607e384c7fee870bb67b6118a3e11418440adceedda0fa7f7e6a1","08fbddf4896959a5270f67c03453ebf115365bd9efc32dff92697dc8c0431fc2","da798065112c5cd2e900cb0e70e07b434c0827fe32c23c93c7480923e0f43004","788dee361eefc9d1e6e70572297945aaa2ae41d51d0fd2b4fff441312d37f4a0","00431f2bcced25e13dc2cd7625d3436002a56f0831e1f904ece3e8b7502f9b18","51ccd6f0f0b85e1f2698a55bd6971da9fc5a531a40919dc42047a8b8a0288da7","5dabcdb14e83e92f6a4b0a0b6f082dc87d9eb8769967094e0c95e4c11a27f66f","a383dda54097c814975bbe4525893869077a5f762d195960171df04e5dba1c42","969114be98209aceeb13470003a6154b1294d7c8dc772e07d6980600f808e932","bb86c0787e05591c350bbf95c58c2d99f0ba679999db51dee6e8bbec88a42a61","deb69ba818cac6d60ad262ee5febe93ecfd14e4c978778af299f82ef8a69b934"]

Anchored

2026-08-21

Public log entry

search.sigstore.dev, log index 2543154575 · entry 108e9186e8c5677a0eab…

Expected log hash

0099eed9d12aa99aaa44ed875b87ffaf90c46527b61dfd92cdd4db2c148aef65 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":"v1787284115102","kind":"published-quote","locale":"de","page":"theme:threema/fit/de","quote":"Auch auf Tablets ohne Sim-Karte bzw. Telefonnummer nutzbar - das kann sonst keiner!","rating":5,"review_date":"2025-03-08","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=ch.threema.app","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 (9ca8f1c1ad15…), 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.