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 Fast Fred
Race Chester · 11 July 2026 · 17:00
Product Pick Winner (Mr Fox)
Advised odds 10/3
Confidence Medium
Prompt version v3_b557cbd4
Predicted at 2026-07-11T07:49:38.405414+01:00
Cryptographic Seal
Leaf hash
15d10118af42fa3afe36fe576bc44f49eff764c4e1aa5af5102163b1f6bd2356
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":"2026-07-11T06:49:38Z","product":"pick_winner","product_lane":"","race":{"course":"Chester","external_id":"rac_11991187","internal_id":2713,"race_date":"2026-07-11","race_time":"17:00"},"schema":"sr-pick-v1","selection":{"advised_odds":"10/3","confidence_final":"Medium","confidence_raw":"Medium","horse":"Fast Fred","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
16127a2e2e528895d7c57ab24a046207b81f7163f6e194382d3938960736868e
2
right
35c69c9688eeafba0157e3d00959ae79e9e9b302abf79e91668baaea9757644e
3
left
9fe14286e961123391a27b454feee3bd24308da2bd7f99bccb85c75901ec9167
4
right
0f583878896b26eb5a38021d5b4a40dab9099d9d5194f70d60a946889f54ac4c
5
right
b40f2a8ff59227eaeeb1227f3171935593453aafb753d3e16182e5c2f0bcab28
6
right
9bf4f078d9681658c6a8e3b6821b776c17a3347c9178f3ba02ba1f2792cfe5c4
7
left
0af567e55c1ca3698f0d247913af3961bd1e207eb3c7b8dd318659719ff7e32e
8
right
7f26ee208367c64ad8017566de1de4e6ffc26d447963c5f0ab2e3225cec0656b
9
right
a37bae6f6b56af99833b4e131855bb087cd4e3a90918a4dfd59d83ac87f8f303
10
right
e25c8d2b935f54f140bee5f6c7b02a176294b2ed6153543d94a92504abeba294
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