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 Park Hall
Race Newton Abbot · 13 July 2026 · 17:15
Product Horses to Watch (Sly Man)
Advised odds 10/11
Confidence High (raw 20)
Prompt version htw_v2_2026-07-06
Predicted at 2026-07-13T09:50:46.191696+01:00
Cryptographic Seal
Leaf hash
8224041ebe23e0886cccf2795f027141f4b60b291b0a1af114783241c02b6b4a
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":"story_score","prompt_version":"htw_v2_2026-07-06"},"committed_at":"2026-07-13T21:10:26Z","issuer":"saturday-racing.com","predicted_at":"2026-07-13T08:50:46Z","product":"horses_to_watch","product_lane":"","race":{"course":"Newton Abbot","external_id":"rac_13000001898","internal_id":2805,"race_date":"2026-07-13","race_time":"17:15"},"schema":"sr-pick-v1","selection":{"advised_odds":"10/11","confidence_final":"High","confidence_raw":"20","horse":"Park Hall","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
824c5d1cbdb898b4d3c1e12a317d879f790c93fde471536723f382fc55336b8c
2
right
b31cd9e21ab283fcaaa2cce95086801d0715558ff2125fca719729ffd45748d7
3
left
8fe617fdf95dc3150c7e4d538f9eee04935afbfd3d802cfb096fe05bb1e73359
4
right
e1a58408f4b742fc467a0c54cdb516dc6e0b8fc324cb984a63bcdf9c56ffa73f
5
left
a28a6c373bbfec5b760df86c1f341027d939b8fc52996d217566314b9c0345d5
6
left
55948f4e8e29440793f46045b1f25282558c5bbca3cffc7780c2a3c54ca6d6ec
7
left
b20426c9805bd5f17d7d0c3747a91f6539d868cc80d6de1f3197b66c180d007b
8
right
f1c99ba68a2d45d1bb79f40edc8b534afd41f7a23fe00327643be3c20b514374
9
left
c1144f953d5061b1e3ec979350290e5e7106de524b96bf728133a9efff0efd59
10
right
e25c8d2b935f54f140bee5f6c7b02a176294b2ed6153543d94a92504abeba294
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