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 Mayaada
Race Salisbury · 11 July 2026 · 18:40
Product Pick Winner (Mr Fox)
Advised odds 4/1
Confidence Medium
Prompt version v3_b557cbd4
Predicted at 2026-07-11T07:53:25.733922+01:00
Cryptographic Seal
Leaf hash
9e7fefbb8dd9863a631743ff928710e5ba0d61c1fb91334a1b872f1f1ac2145f
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":"2026-07-11T06:53:25Z","product":"pick_winner","product_lane":"","race":{"course":"Salisbury","external_id":"rac_11991538","internal_id":2733,"race_date":"2026-07-11","race_time":"18:40"},"schema":"sr-pick-v1","selection":{"advised_odds":"4/1","confidence_final":"Medium","confidence_raw":"Medium","horse":"Mayaada","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
9e64d4b9ddbb58d24a5e1b458229682ffbcd7b5213353db9f99c7dbc9b1caeb6
2
right
60c61ff6ca410356c41535252ea2f621fdd5cf5915ea9d198581f7a1cc490e1c
3
left
d76524049cab9b6144a0db3090c81f7d680043d7a8ee3613af2a7b76dcc57d78
4
left
29b9329678105f7b94799666df64bff979212f7378d609f460469c33636d7925
5
right
32969f22a66e840a786dccb6b5ee6e302709d53b2206fb9aebccabc2478b63f7
6
right
122ad8c3830c8717ffb38cb520c4f4916841ee7438458e522353d27690ee23f0
7
left
8ecad2493bca745bc0527c62a707de924168e44ffe66dc178ff870ba82aa045e
8
left
9a677d21c2cd9160c97a508996b4307c85b3aa9b95597b3eca8c62f864ebab76
9
left
c1144f953d5061b1e3ec979350290e5e7106de524b96bf728133a9efff0efd59
10
right
e25c8d2b935f54f140bee5f6c7b02a176294b2ed6153543d94a92504abeba294
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