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.

“The GPRH1000 O2 sensor, Nightly Recharge option & solar charger on the watch DO NOT FUNCTION!”
Google Play · 1/5 · 2026-08-08

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 2543025731

Proof data

Record hash (SHA-256): 6f89462b9e6e24a1f1626dec55ae607a2ac116ad789da192e5e9abd3180db06f
Signature (Ed25519, base64): qz+1+eG7odqXEL72ArylOGy30XaWalxsHhxc7T1zTsjiGPXHrCnys+2VdnTrBzd9/Uokj0oliF1N6QkcgW4PBw==
Merkle root: 172a3e0b3c9f8b02f52318e01ba6beb899404e00e91c15eebc4dea38467e1404
Merkle path: ["6f8b4cd365053c74e2554b8404822306b72b9eea10f1697910da46cd2dab3e6e","f4fa11c9c2fd1add825fd562b32558210e160bfb35bed075fdc5ff9ff4a4c8ee","7fcca813a9ea75e1df8626c95a5cc8cccf854b2bd4095eb9572ab5b2b9172c69","6df590180910e9faf85ff083dcc02b2747ffa28a85678a674e1567e51bd0b872","05ea2139be6e0618aa4df694fd684d035add82ce850f02b265449f2602c36cce","6b4add2e714c0b436f92fa30ce6d7cf7b5ac24bfe1afb177841c4a5234541a86","90cebb787d878429b120313b03e4cf2b9e6f56c6728c4d1ef2164eda25fc6f4c","dde7b942f49a51c11fac36713cab2a60782cf44e852c1149899bdab9b70e40b5","6f626ef5d46c6ed358d39ee240c89aae2a35b4278a47aa75363e5c9f34b0f155","05036fa09b9056858e5f1ff790242f4c80a3642df58ed73311281590d5a04bd6","057312bf19bec52eca79696833e9284ad3e97909571c00140a1555d6764df41d","1f567a3fb36c78ae362612f4c99cae95ae4dd4ad0c6c633328b659341fcb6d94","f12a899e5c92b32cfe903fadd591410ed4da016670fe0a40b993afb550e2e37a","cf4d3887edb33be9d7a9e64011338d9abc8444e06d1f5332550f7686a2c1727d","7731d0ded4f51d151ea3e84474d1e27a6279e8756420c93cf5fec0abf7f11add"]
Anchored: 2026-08-21
Public log entry: search.sigstore.dev, log index 2543025731 · entry 108e9186e8c5677a8971…
Expected log hash: 19ecbe4a66d8adbd7c6057dbf6ed9be73485c248dba1e0c595279a908b3e8bea 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":"v1787283443958","kind":"published-quote","locale":"en","page":"theme:casio/quality/en","quote":"The GPRH1000 O2 sensor, Nightly Recharge option & solar charger on the watch DO NOT FUNCTION!","rating":1,"review_date":"2026-08-08","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.casio.wac_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 (172a3e0b3c9f…), 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.