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.

“Der Obulus, den ich damals entrichtet habe, ist es mir definitiv wert gewesen”
Google Play · 5/5 · 2026-08-02

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 3140838741

Proof data

Record hash (SHA-256): 05b02f37d8502ccb785fbc00e2e88fbe044af753a130e02f5d29914ee63a9172
Signature (Ed25519, base64): /HXfIrNKmU02JKsDT1BhPYl8nTs4iHSJcWfbRkmw/qamPS3Rbk7fP+BPYGktGIFQ4sXr9ulO9l6kwG1DjZddDA==
Merkle root: 68ee5f8618d9ce1aa33f2cb5b6f3145b5f909a3c35a03ccc3d10e979b2f81082
Merkle path: ["05b3cda4956992c54e49ba9f8dcaa2e04dad378892408dba8469a7ee61aadab0","c36289551e7fb3aa0745003ceacb7a3b78f67ba0562072b9ab90d2138ccae6f2","241ffaccaf9d5ffc633696b2302bb1d4570aaa4e43ee66d00f85a023c7cfabe8","3b21934ab74044d8b3d58e1c1b6c0a42261c113127af18cc1d70538a68bc15b2","ec1602c57f3fd5ae18d4ff69e30a3b544d110b289585330ff2990463c1dbee41","bf72dfd96c082fe1d4840dd61b2c8136073d0841f9fe9a95f8bcb13568c07425","eb64156cfd45f47979aed5e2a7b02ea7a8cbf01771073701615dbae1b677d543","74d74082e79ea2d079bb3283074daea394e85429f4e6d41762b7d4d1fc98366d","cc82126100fd1b8c5adbcff894cb9e6d161aaf78cfdb7f1e0b2a2189df40bb0d","0d3a96605cff17f301f5dc0d7605b097e2542c3f700ceaf2eb030313642660f6","e9213ada7e329b7ec9e91b5f2b11c05e30a6622d2bd072cf7b5757a128306902","43121300a82da93d01b3fdc8bb17f432c227d8a918d31c79ee0d99fa14f29075","e6960377f92ebdc1b41fb37d3ed0decff1e5fba5b62ad653e7be0f8408d1c6c3","e66299710f80b56c392136748910ac59d79a991f3e479ea8a96c5c23e200aa78","418554fa0ebde54d6cdcc03145c7126505ed96d3734e8e7ae56dc0dfd8ca0a2e"]
Anchored: 2026-10-08
Public log entry: search.sigstore.dev, log index 3140838741 · entry 108e9186e8c5677a4791…
Expected log hash: ca4949400cf2d29b49789563ea2e672fc73762380548d6fd65398e40c0d98728 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":"v1791433229105","kind":"published-quote","locale":"de","page":"brand:threema","quote":"Der Obulus, den ich damals entrichtet habe, ist es mir definitiv wert gewesen","rating":5,"review_date":"2026-08-02","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=ch.threema.app","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 (68ee5f8618d9…), 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.