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 Cougarontheloose
Race Uttoxeter · 15 July 2026 · 14:18
Product Pick Winner (Mr Fox)
Advised odds 10/3
Confidence Medium
Prompt version v3_b557cbd4
Predicted at 2026-07-15T07:01:44.942963+01:00
Cryptographic Seal
Leaf hash
457cd9ed4e85effe6a0d73d3dabf58c71e295ad1f6d17fcd888ab8f1b38102b7
Your browser
…
Batch
15 July 2026 · 60 leafleaves
· inspect batch →
Merkle root
e4408eaba1df1a5c38c539864028dfae01482f63ce7383bbf8cabee5597ad9af
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":"2026-07-15T06:01:44Z","issuer":"saturday-racing.com","predicted_at":"2026-07-15T06:01:44Z","product":"pick_winner","product_lane":"","race":{"course":"Uttoxeter","external_id":"rac_13000000741","internal_id":2927,"race_date":"2026-07-15","race_time":"14:18"},"schema":"sr-pick-v1","selection":{"advised_odds":"10/3","confidence_final":"Medium","confidence_raw":"Medium","horse":"Cougarontheloose","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
46463e209694793ab2d2377cd62d46fc55a7af04f183d516d13948100c22b366
2
right
6839773507016271313ae7985dc64dd457794683e5007a87dd15a332af2d999b
3
left
30f2d260a7148459a3b3f715683dd10ee6f4840ecb90e4275118a38f6100431e
4
left
bd979cab238f16cea2cb4a7cd3baf27cd8d3128e0a2db45fd3fb8dd6dac0ba50
5
right
ecc115ab520d84fdc82f866f4bc64f7386a1ee51628574c7ee8665a71024bd8a
6
right
ddd2125ac2c0a6a67ecd0d29863265e6b24768d6958939fe937aafeb1b856e90
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