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.

“Threema ist der beste Messenger den ich kenne.”
Apple App Store · 5/5 · 2026-06-02

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): 687701b6bfbc4f98656645b6fcb02b088c7822ad4b1e18850ce711c2a6795e9e
Signature (Ed25519, base64): u+5RTVkeawUfqot45ZvUwjD/mTmpsOoXYkuwWDwOw0iwyAPKFp8aJ9NIMmVPLwv4ZI+DG8J/HC0iQlU5jkMKDw==
Merkle root: 9ca8f1c1ad15a78206ceaec922c537c0b0ac598e12c9c25877f5e0e19de38c6e
Merkle path: ["68788e6b3423ce61387dde5b25773a28cc8e20fc5572aae2b502048a681fa7c4","78b2d369b40afd08f1fcb1da45a7ce56a1f7389c3ea0e123252e2243e7dabd09","413556d5c70d9118de8ee90342602c3f475b9799fe545fe56ebbdc6bf8a91106","eda1a5c85e68563632971d20bfc63046d1101a9c1947dacbb9dcdb51b3f5b8d5","f0a45d8742cdfd4a4e8e2e88316232286693fe98b1e512ada1073f9c6242b27d","a9c6d77026b9a01850bdf58eb9b54152cdc9c7399ffc939fd80d3d24eba73793","fb4b9c784efcb74dfda518d90d433698ccee75bc53bc5f5c4b3cf6df32b38d7d","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/delivery/de","quote":"Threema ist der beste Messenger den ich kenne.","rating":5,"review_date":"2026-06-02","source":"Apple App Store","source_url":"https://apps.apple.com/de/app/id578665578?see-all=reviews","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 (9ca8f1c1ad15…), 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.