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 Two Commanders
Race Catterick · 15 July 2026 · 15:40
Product Pick Winner (Mr Fox)
Advised odds 2/1
Confidence Medium
Prompt version v3_b557cbd4
Predicted at 2026-07-15T07:03:41.515774+01:00
Cryptographic Seal
Leaf hash
9299df8d2f311d574ffc449440d63a1ee7d673fcfc366c329b8b096c8df8b6eb
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":"2026-07-15T06:03:41Z","issuer":"saturday-racing.com","predicted_at":"2026-07-15T06:03:41Z","product":"pick_winner","product_lane":"","race":{"course":"Catterick","external_id":"rac_13000000624","internal_id":2926,"race_date":"2026-07-15","race_time":"15:40"},"schema":"sr-pick-v1","selection":{"advised_odds":"2/1","confidence_final":"Medium","confidence_raw":"Medium","horse":"Two Commanders","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
90880340a280a42c7145273ff2ab4effb0664c51a8d22df83a4725dff7699f33
2
left
5591b3febfeff827ca71539f876fbf7d74638c875a36c95e26b84130dfa8e8d1
3
left
242dcd4a0435a5e34b3bd9d1d1033129a7de7492ad47e3a89c105ef777fd1baa
4
left
06bf6111858d941a85d3a71acd011426717213c4d844420904a164771112f1a3
5
left
f8e9ed95e02d6eeca5640914127c50ed23974ac9c957b8bc4831b728aababd9a
6
right
ddd2125ac2c0a6a67ecd0d29863265e6b24768d6958939fe937aafeb1b856e90
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