VERIFIED · SR-PICK-V1 · SATURDAY RACING · VERIFIED · SR-PICK-V1 ·
SR
AUTHENTICATED
Verifying in your browser…
Hashing the pick's canonical bytes with your device's SHA-256.
This is to certify that the pick recorded below was
cryptographically committed to Saturday Racing's transparency
ledger before the race ran . The commitment is a SHA-256
leaf hash of the canonical bytes; any subsequent tampering
breaks the hash and this certificate turns red. The check
runs on the reader's own device — no trust required from us.
The Pick
Horse Sailthisshipalone
Race Pontefract · 7 July 2026 · 16:18
Product Pick Winner (Mr Fox)
Advised odds 13/2
Confidence Medium
Prompt version v3_b557cbd4
Predicted at 2026-07-07T08:00:38.776872+01:00
Cryptographic Seal
Leaf hash
c02fe27501963318f0302cb64f1eaa61575b637f050cbf7eb659f50930bdc5e7
Your browser
…
Batch
13 July 2026 · 709 leafleaves
· inspect batch →
Merkle root
eba1d4cb07b18df5f26ea6211dae664c2a8d9ce7bdcd95a3a7d9da03ed6cf62b
Your browser walk
…
On-chain
Off-chain verified. Anchoring on-chain is a separate, gas-gated step.
Technical appendix — canonical bytes & Merkle proof
The canonical bytes
This is the exact JSON that was hashed. Copy it, run sha256sum on it yourself, and you should get the leaf hash above.
{"attribution":{"pick_source":"llm","prompt_version":"v3_b557cbd4"},"committed_at":"2026-07-13T21:10:27Z","issuer":"saturday-racing.com","predicted_at":"2026-07-07T07:00:38Z","product":"pick_winner","product_lane":"","race":{"course":"Pontefract","external_id":"rac_11990121","internal_id":2553,"race_date":"2026-07-07","race_time":"16:18"},"schema":"sr-pick-v1","selection":{"advised_odds":"13/2","confidence_final":"Medium","confidence_raw":"Medium","horse":"Sailthisshipalone","position_claim":"win"}}
Copy JSON
The Merkle proof
Each hop is a sibling hash. Your browser walks these from the leaf up to the root, hashing pairs at each step.
# Position Sibling hash
1
right
c0a192851db9df35e187e137d07ba5bd8d8e8de520d3dae3c77533adbadf259b
2
right
9b6fdcfc33c6bd746a875060c0698782c7dccc0bcdd7f05f625040a901fb1487
3
right
1d587eaf7be2fbccbc37f2155d48bc99f6494fc7d8341dbd0af6eb264d7f8e0d
4
right
398b1afcd3ced498352d14fcd018a6c0fb47064f8ccd1f05edd17728c41345cb
5
right
14d6aaf0f68c971a9b6476ec0f28f7f4f2c3d186866ab347ea638b2c7c3ceef7
6
left
acddd189171186c8bc352e9e4ff896c2fac95bec250bde9a776ff5b7544bdba3
7
right
7b966ba7fb6479ee18f2a8f9b8925b3c3366b9fe81cdbeb08938a02c83890686
8
right
f384b0629d9042022b8062f38497000b02dafa843e81b7fba3c37144f3b49f92
9
right
559310ef76957df08e5f62efc49ff6649a36113b72a52a9a4471bd1801615514
10
left
f294ff8c83ee2bf537f6f3a850e09ef12f44b3915f1df793eb9ebfc3a7648f55
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