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 Probation
Race Lingfield · 15 July 2026 · 17:20
Product Pick Winner (Mr Fox)
Advised odds 11/10
Confidence Medium
Prompt version v3_b557cbd4
Predicted at 2026-07-15T07:06:11.237700+01:00
Cryptographic Seal
Leaf hash
58503a95495de4b264fcf0ec91abc87bc33f6ce9a86836d72a5385901252aee1
Your browser
…
Batch
15 July 2026 · 60 leafleaves
· inspect batch →
Merkle root
e4408eaba1df1a5c38c539864028dfae01482f63ce7383bbf8cabee5597ad9af
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":"2026-07-15T06:06:11Z","issuer":"saturday-racing.com","predicted_at":"2026-07-15T06:06:11Z","product":"pick_winner","product_lane":"","race":{"course":"Lingfield","external_id":"rac_13000000663","internal_id":2903,"race_date":"2026-07-15","race_time":"17:20"},"schema":"sr-pick-v1","selection":{"advised_odds":"11/10","confidence_final":"Medium","confidence_raw":"Medium","horse":"Probation","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
604edbb7587398ed36fd078a83fa81139dd4b170d86910ad39af081e1abda4a2
2
left
0350e9c5481417eec6ad20e1f8501dbdd6e9070a900b4def5149e7962c3a22d6
3
right
c3db23ccec83f56501038c2a5224e18c87202875f467bd49ea0445267cae443a
4
right
8d7283735f6525bb189eabe6ea3605fd6927ad04925a0bbd88fc23578151da2d
5
left
f8e9ed95e02d6eeca5640914127c50ed23974ac9c957b8bc4831b728aababd9a
6
right
ddd2125ac2c0a6a67ecd0d29863265e6b24768d6958939fe937aafeb1b856e90
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