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 Count Bezukhov
Race Doncaster · 9 July 2026 · 14:45
Product Pick Winner (Mr Fox)
Advised odds 2/1
Confidence Medium
Prompt version v3_b557cbd4
Predicted at 2026-07-08T18:56:44.462952+01:00
Cryptographic Seal
Leaf hash
c83701b34bd9348a9c53065ad9104ae9b5260f52c15092ff6f11b38803da0130
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":"2026-07-08T17:56:44Z","product":"pick_winner","product_lane":"","race":{"course":"Doncaster","external_id":"rac_11990485","internal_id":2617,"race_date":"2026-07-09","race_time":"14:45"},"schema":"sr-pick-v1","selection":{"advised_odds":"2/1","confidence_final":"Medium","confidence_raw":"Medium","horse":"Count Bezukhov","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
left
c819016aa355a7b75adbc76f0434f4a6ee19cc8897ccc1e9012188afcd2f55d8
2
left
3b681aff7dbfa4174a03797c07dbefc9467e6029b64041220cec245980af70d2
3
right
5827dee87b5a18cb9cd3bba08273cceed11f0ea450b6b0e9697de80871e1acd3
4
right
3fcba72da54d2e0c4e2a299d4d179c0d6e529e9699977ed6554f3035b0c3b1d1
5
left
1f43b9fe857f8bff074e76ca1389e5156ba5338ce2270feac8af71847ba29692
6
left
acddd189171186c8bc352e9e4ff896c2fac95bec250bde9a776ff5b7544bdba3
7
right
7b966ba7fb6479ee18f2a8f9b8925b3c3366b9fe81cdbeb08938a02c83890686
8
right
f384b0629d9042022b8062f38497000b02dafa843e81b7fba3c37144f3b49f92
9
right
559310ef76957df08e5f62efc49ff6649a36113b72a52a9a4471bd1801615514
10
left
f294ff8c83ee2bf537f6f3a850e09ef12f44b3915f1df793eb9ebfc3a7648f55
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