VERIFIED · SR-PICK-V1 · SATURDAY RACING · VERIFIED · SR-PICK-V1 ·
SR
AUTHENTICATED
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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 Klassleader
Race Newmarket (July) · 4 July 2026 · 15:15
Product Horses to Watch (Sly Man)
Advised odds 11/8
Confidence Medium
Prompt version htw_backfill_v1
Predicted at 2026-07-07T09:56:15.795914+01:00
Cryptographic Seal
Leaf hash
b6098eab06977ad45e93580682bcae00afea914ceed663715e54e5368f87d612
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":"2026-07-13T21:10:27Z","issuer":"saturday-racing.com","predicted_at":"2026-07-07T08:56:15Z","product":"horses_to_watch","product_lane":"","race":{"course":"Newmarket (July)","external_id":"rac_11995997","internal_id":2336,"race_date":"2026-07-04","race_time":"15:15"},"schema":"sr-pick-v1","selection":{"advised_odds":"11/8","confidence_final":"Medium","confidence_raw":"","horse":"Klassleader","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
b5eb397f5b627a68569f438446ce11b08a033866bf45280fdee62c34e085d718
2
left
3662683328797dae84b87808a2536cf7eafa1dc9ff5430b0198f8dd063318f12
3
left
9f94e6607270bea03cb4c00dba02beba3a8ac480a21a04363bf3e8872f78955c
4
right
f8c4bc101105bfaa39b7c59eacdd5fb08c4c3413ac394497650689391b07de2d
5
right
cdc43ee135d27ed2e4e2e9c87e3d3d2a18ea09ac1b149404ecdd52998e761386
6
right
204feec8495b2d1b806e60958c15c429141021ee238922bdfcbd4c87367079be
7
right
7b966ba7fb6479ee18f2a8f9b8925b3c3366b9fe81cdbeb08938a02c83890686
8
right
f384b0629d9042022b8062f38497000b02dafa843e81b7fba3c37144f3b49f92
9
right
559310ef76957df08e5f62efc49ff6649a36113b72a52a9a4471bd1801615514
10
left
f294ff8c83ee2bf537f6f3a850e09ef12f44b3915f1df793eb9ebfc3a7648f55
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