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.

“A very valid alternative to Google Mail.”

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 3258859570

Proof data

Record hash (SHA-256)

218b6531d2d2e1e84689b5d580b9631d7a2ac833e5ff8b75f6dc8aa87a5af266

Signature (Ed25519, base64)

F8Pp3kZLmXqd421CnsPPkHciXOwefomhp0jPvtdkpQSaFnLGBKHCn6616Lh7Ixgi9yqPml9L3JmnOw0JOo64Dg==

Merkle root

ca3049e83faa90e23a8ee728d82960c74b9da8080000e4c92979853b767b75e4

Merkle path

["218e6d53af2c845002c37c359e1c413260d4df83783d4fb7857673d84031d67f","97d7ec8df67e475a8d13ef34b59ff8f27bda0d9a684bc814e6e8ec458a053680","eb63ab01b359211b261714ac461b6725f6283e70cdc32c158b461227342e4a72","d6b93bc46ef1622590b444e4da6d92f219c0467c2a96579131e155f93c6a7ef9","15adcaf3702c90403d53013665f0aab426c0917aa5e16ded26906d071278d812","c66c3f51b2aa0a6a345cc458698ccb0c67d69a62c806b4e87df3fced7f41f68f","42cabf6ebfadabd00600f1632b4d67c7a691280d17ae6906ef76c925e7b0031f","42084336ea68671c6cdbc64a3256814ce9f7294da996c963b95e1c82cb6410bc","967fb081a396cfbb66bed783bb3ed6fcaf7ac69b9eb2aaa3de2e97982eb61e11","07e33df340bf65f90d7d54b0f16925fa2c94e200ad431c64d867123d98a36a84","3c861171afc1234c13d38e0a9581ac6cb6efc1343332ad0b81835f9345442915","c528a565399f1c43ffb0fc3019a2c2cee2d7413a87787555bb34d4d613541976","3eed51977edad6c2579b7e509587049321fa77487298d3b73535214036c0118d","7614ef067de1e21e5c4ed10ec802ff07f79b9dfb75186edc1d9abf343905b9c9"]

Anchored

2026-10-15

Public log entry

search.sigstore.dev, log index 3258859570 · entry 108e9186e8c5677a8fb5…

Expected log hash

37382a24206a9b79ef105a983cf477ccafc4b4430b1549876c44fbf5fedaafa5 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":"v1792034893828","kind":"published-quote","locale":"en","page":"brand:tuta","quote":"A very valid alternative to Google Mail.","rating":5,"review_date":"2026-07-14","source":"Apple App Store","source_url":"https://apps.apple.com/it/app/id922429609?see-all=reviews","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 (ca3049e83faa…), 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.