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 Oklahoma
Race Killarney · 13 July 2026 · 17:30
Product Pick Winner (Mr Fox)
Advised odds 1/2
Confidence High
Prompt version v3_b557cbd4
Predicted at 2026-07-13T09:34:53.441226+01:00
Cryptographic Seal
Leaf hash
4954b91c938835266466d2ca7eb37cfbc46f304bbfe51010bd8fa7509c2e4ff2
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":"2026-07-13T21:10:26Z","issuer":"saturday-racing.com","predicted_at":"2026-07-13T08:34:53Z","product":"pick_winner","product_lane":"","race":{"course":"Killarney","external_id":"rac_13000000078","internal_id":2814,"race_date":"2026-07-13","race_time":"17:30"},"schema":"sr-pick-v1","selection":{"advised_odds":"1/2","confidence_final":"High","confidence_raw":"High","horse":"Oklahoma","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
49d0e1a1838524ada2611ca851f2f489e3786d97ec66b33b57817155ec3a55f4
2
right
4f6cd58e4343dc8b563dee7f3b00d4967c1a7ee16ea80565d4125c095027e2d2
3
left
6912e91d1ffdcddf323c271f925c51248045ad25e26e396728edee9d8fb60163
4
left
1ceadec64cf7a696853e9b43ad759033614cc53f5f4aa75506d3271fcc825f07
5
right
1a7c6b029f58cae1bf8086ed6fa83e42a03e521eed5dfafe556fe3f16191d19b
6
right
6eaf7a3b4dbf7de787d708e4aeca0643d7190dfd48ea1d758c6741d5876fc46d
7
left
abd1f2af8516869713aed81c9f26f27b73cfb533f542009e428008b662810a09
8
left
258ce92dcccd21d1d3bbbb39ac789ad1349e3db2aadbe660b7ed0a8637d8148f
9
right
a37bae6f6b56af99833b4e131855bb087cd4e3a90918a4dfd59d83ac87f8f303
10
right
e25c8d2b935f54f140bee5f6c7b02a176294b2ed6153543d94a92504abeba294
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