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 Mai Dahlia
Race Killarney · 13 July 2026 · 18:00
Product Pick Winner (Mr Fox)
Advised odds 4/1
Confidence Medium
Prompt version v3_b557cbd4
Predicted at 2026-07-13T09:35:40.205924+01:00
Cryptographic Seal
Leaf hash
520c590a1c2a41d64b36645d96c66103696417c745cc6efe42c890b778d9535f
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":"2026-07-13T08:35:40Z","product":"pick_winner","product_lane":"","race":{"course":"Killarney","external_id":"rac_13000000091","internal_id":2815,"race_date":"2026-07-13","race_time":"18:00"},"schema":"sr-pick-v1","selection":{"advised_odds":"4/1","confidence_final":"Medium","confidence_raw":"Medium","horse":"Mai Dahlia","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
5256d7190e998b7d299c7dfe85fafa6ae236a14cdcc7f8f5539d0d4274495647
2
right
bdc052ea301a068de352d509b1f33859595516fac4924a211c20d7a3c6a1ae27
3
right
c3658028465abd4e247a5b649c025a9305e8d896e21720a895b93f07f346de0a
4
right
e7fad4010f0684750d1619edc79e768e7ad13ddfb734e7cbdf18b8837e8c4367
5
right
8482e981bcd79800d8fe2d1ac2fc4e783eb3f5a068d13e0f7b209a25cf2a3317
6
left
fc52f76fefc833e1107b03796f834d4ba1336aeb1778053c068d9688bda96b1d
7
left
abd1f2af8516869713aed81c9f26f27b73cfb533f542009e428008b662810a09
8
left
258ce92dcccd21d1d3bbbb39ac789ad1349e3db2aadbe660b7ed0a8637d8148f
9
right
a37bae6f6b56af99833b4e131855bb087cd4e3a90918a4dfd59d83ac87f8f303
10
right
e25c8d2b935f54f140bee5f6c7b02a176294b2ed6153543d94a92504abeba294
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