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 Ottoman Chief
Race Doncaster · 9 July 2026 · 14:10
Product Pick Winner (Mr Fox)
Advised odds 15/8
Confidence Medium
Prompt version v3_b557cbd4
Predicted at 2026-07-08T18:56:07.757412+01:00
Cryptographic Seal
Leaf hash
96fae2e75371dbefeb2fde1ac233cd3e0bf39b55538e1198573b77ecd0740c3f
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":"2026-07-08T17:56:07Z","product":"pick_winner","product_lane":"","race":{"course":"Doncaster","external_id":"rac_11990498","internal_id":2616,"race_date":"2026-07-09","race_time":"14:10"},"schema":"sr-pick-v1","selection":{"advised_odds":"15/8","confidence_final":"Medium","confidence_raw":"Medium","horse":"Ottoman Chief","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
9766dd2b74c77f485641107b7753304a3c787dbb0a568aee346f48cd9b7064b2
2
right
c93b78fef6d89209be7e8bd0ea7fff756ae73a24796a8b2e7416746af8143a1c
3
left
638debc4ff74023988ee24da39174f0877c7e02d499108fd17f79e8645833959
4
left
c6abddf7d25c58282b7aa9c8fa00e70cc1043d87f4595a4e82253fc13953ffbb
5
left
ff396369426df07e2cc9d7219a4648a240b65996a5f7ad862260181ed3b5063a
6
left
de4c18b344759b795e65fd7d556764fb84fe70fe3ed694d8fbe24938047d102e
7
right
4c56aa4f1d1039c6ad4821c5c72376f7d1ccb9ab4f942fb7d343352d40712b8c
8
left
9a677d21c2cd9160c97a508996b4307c85b3aa9b95597b3eca8c62f864ebab76
9
left
c1144f953d5061b1e3ec979350290e5e7106de524b96bf728133a9efff0efd59
10
right
e25c8d2b935f54f140bee5f6c7b02a176294b2ed6153543d94a92504abeba294
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