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.

“Für mich die perfekte Lösung Vokabeln zu lernen respektive aufzufrischen und zu "konservieren".”
Google Play · 5/5 · 2026-09-14

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 2907673729

Proof data

Record hash (SHA-256): f28be1aa7b33b223fa74f89abcb105efc3eea485e0bdcdb3a2a14474b3b9f745
Signature (Ed25519, base64): QYYliS0Qjvi1Ju1DpDKTPML5SCykCl2XXu8XHu5SrZVIx71ZxxyyeFXuLjSkB54KfTihZTTn5SPVyo32hq48AA==
Merkle root: b9a08f9d6d76dd148110a496219c42cf3205c6f982800d84d5c85d77e9461e02
Merkle path: ["f28f0860184b82a965f5e933fce3594bfc3ce07e0e271892d76e524e139e3f90","9ee47e6f3a12e731c3da8928c752a9300fffd7b22d18ef1f093c78716884668e","5672d16a02e75fdb6f116217fc41d8c5d1e01d2f9b7601074d83ffdc3d5f607a","3e6484e51cce47a8382ea23b812ec362b827affdc290f92c427190a0de945ea1","7ffbe542b9468d47448a805e4338c2e6a7857416f7734232ff1b554e2a3dbd6f","b78df60ee6285b28f8a6b3e4d75ddf30402815859f8561c09e71e4a5f3ed6039","c161bc538bdc73cc19ccb80f6986763dd451722e9a4b5f9cb66214b87ca04b4c","e18e9744fd0b4529c60993f3a3d7bd589a003db929d0eb3d05b5bd868a3902b5","f3b18e602df6fdc88edf582ea02dea5f20406e3e3fc2e8a60e1918a8c7784312","2ea6bffa9673f3a81bbc868569f3e6ff306870034622c6e56499753f4c5dd170","1ce8185a67fc0f0f175627564ef800e7835dfec27d00240c56e1eaf3b636cfe9","e89b125d6d75a826a464fa50668f6e82a6668dbc929bfd3fce7c23cc14adfdbc","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/quality/de","quote":"Für mich die perfekte Lösung Vokabeln zu lernen respektive aufzufrischen und zu \"konservieren\".","rating":5,"review_date":"2026-09-14","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.studysmarter","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 (b9a08f9d6d76…), 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.