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 Dubai Venture
Race Pontefract · 7 July 2026 · 15:48
Product Pick Winner (Mr Fox)
Advised odds 5/2
Confidence Medium
Prompt version v3_b557cbd4
Predicted at 2026-07-07T08:00:08.613862+01:00
Cryptographic Seal
Leaf hash
754b89b65223a6b6a119bab193735bae4c9b38a60eb374c284d9765f63664586
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":"2026-07-07T07:00:08Z","product":"pick_winner","product_lane":"","race":{"course":"Pontefract","external_id":"rac_11990147","internal_id":2552,"race_date":"2026-07-07","race_time":"15:48"},"schema":"sr-pick-v1","selection":{"advised_odds":"5/2","confidence_final":"Medium","confidence_raw":"Medium","horse":"Dubai Venture","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
74f9b8924205dbd4a85823c6d7d73e416284b39e1a935029f4445cff3aa96974
2
left
098d12984d10bb442438fb9821570c67ccd4d25642c89da8c218b34e0e0a5f8d
3
left
e96714b938835c42161c43cf1af56cc014fb2f9ebcd3041c48cb999d16a86a39
4
right
92f5180577ccd31050b2d74b4414b4d5b9882282cc01cbe86e04c574283dcd01
5
left
200f5868f8605f5ad05cb5d5a0f64bb9ef0d04aa83b4e59e3878109d60cf7510
6
right
11a3ade288925daffe08c7c49239d533eac4edd4330aa411ec5a586d3ef88887
7
left
b20426c9805bd5f17d7d0c3747a91f6539d868cc80d6de1f3197b66c180d007b
8
right
f1c99ba68a2d45d1bb79f40edc8b534afd41f7a23fe00327643be3c20b514374
9
left
c1144f953d5061b1e3ec979350290e5e7106de524b96bf728133a9efff0efd59
10
right
e25c8d2b935f54f140bee5f6c7b02a176294b2ed6153543d94a92504abeba294
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