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 Linwood
Race Ascot · 17 June 2026 · 17:00
Product Horses to Watch (Sly Man)
Advised odds 11/1
Confidence Medium
Prompt version htw_backfill_v1
Predicted at 2026-07-07T09:56:14.720870+01:00
Cryptographic Seal
Leaf hash
1a5ed17bff3a4091d79f0b0e40d3b03de3c8cf7aa846cafbe44472bf29aafe72
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_backfill_v1"},"committed_at":"2026-07-13T21:10:28Z","issuer":"saturday-racing.com","predicted_at":"2026-07-07T08:56:14Z","product":"horses_to_watch","product_lane":"","race":{"course":"Ascot","external_id":"rac_11947897","internal_id":1742,"race_date":"2026-06-17","race_time":"17:00"},"schema":"sr-pick-v1","selection":{"advised_odds":"11/1","confidence_final":"Medium","confidence_raw":"","horse":"Linwood","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
1a1215cff7ad85914435c3f6ead3075b117293c7ec41e69b7a9ff015f37be320
2
left
41928f9638d5d833b8a4fa111714cf996c407aa24d9110beb81538d660f3c345
3
left
cb01287e1cac739b3825c18bb6bb627d61e0489437b1dc522528f319ad927ccd
4
right
5eaa7643dff9394ac1c02bb346859b698f26933dbe81734f6f7345e93607eec0
5
left
62315c85243320991c5085b922e30fc067435bbc3350b83dd5a5a1778045c268
6
right
9bf4f078d9681658c6a8e3b6821b776c17a3347c9178f3ba02ba1f2792cfe5c4
7
left
0af567e55c1ca3698f0d247913af3961bd1e207eb3c7b8dd318659719ff7e32e
8
right
7f26ee208367c64ad8017566de1de4e6ffc26d447963c5f0ab2e3225cec0656b
9
right
a37bae6f6b56af99833b4e131855bb087cd4e3a90918a4dfd59d83ac87f8f303
10
right
e25c8d2b935f54f140bee5f6c7b02a176294b2ed6153543d94a92504abeba294
Print / save this certificate