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 Supreme King
Race Chepstow · 3 July 2026 · 17:43
Product Horses to Watch (Sly Man)
Advised odds 9/4
Confidence Medium
Prompt version htw_backfill_v1
Predicted at 2026-07-07T09:56:15.732556+01:00
Cryptographic Seal
Leaf hash
6637d68c77fac3dbcae79c4c7a11d03dad12d39284c0d52ae0a9b0a14020d967
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":"2026-07-07T08:56:15Z","product":"horses_to_watch","product_lane":"","race":{"course":"Chepstow","external_id":"rac_11997297","internal_id":2403,"race_date":"2026-07-03","race_time":"17:43"},"schema":"sr-pick-v1","selection":{"advised_odds":"9/4","confidence_final":"Medium","confidence_raw":"","horse":"Supreme King","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
658dedd26d7d2fcf4578c72b66a99d4ae8e9ad79f8087d0908b6147b38f2db4c
2
right
3c5ad88e2afbaab42d878159324b006f74008621bc7b4de70dd963de5446fe97
3
right
c49cfef2362febe64b5179fe26c1fda0682cccda4bcc86e9af3bd3bfc6b2e476
4
right
ea105fe4592ceec53f0d382aeb6b1891be1217905259d9adef8c1cb9383bc5ed
5
right
2a8e4c62bd3660bc06e50dba5a98fbb2b0eca3a11ede89b08ddb5647c2c2f034
6
left
a328e066f90b70a2e880de9d27268241c8a61a11737844302019638d7064d37b
7
right
2cc9e7f1f0b7c3ec0e9bb3fdcf68995f9a6e05667eb83c69c735851531edb0da
8
right
f1c99ba68a2d45d1bb79f40edc8b534afd41f7a23fe00327643be3c20b514374
9
left
c1144f953d5061b1e3ec979350290e5e7106de524b96bf728133a9efff0efd59
10
right
e25c8d2b935f54f140bee5f6c7b02a176294b2ed6153543d94a92504abeba294
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