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 Langholm
Race Ayr · 5 July 2026 · 15:50
Product Pick Winner (Mr Fox)
Advised odds 11/4
Confidence Medium
Prompt version v3_b557cbd4
Predicted at 2026-07-04T22:20:14.571080+01:00
Cryptographic Seal
Leaf hash
e920267d76f3a15aaeb00ce1bf4c90661e5d2127c01cf89ee1b4500f539f3017
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":"llm","prompt_version":"v3_b557cbd4"},"committed_at":"2026-07-13T21:10:27Z","issuer":"saturday-racing.com","predicted_at":"2026-07-04T21:20:14Z","product":"pick_winner","product_lane":"","race":{"course":"Ayr","external_id":"rac_11989809","internal_id":2488,"race_date":"2026-07-05","race_time":"15:50"},"schema":"sr-pick-v1","selection":{"advised_odds":"11/4","confidence_final":"Medium","confidence_raw":"Medium","horse":"Langholm","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
e929c3fcd0dcb48a78bc33a9999c5032aa6330b6bd239c6c48fa960d1cf8d280
2
left
4d9fb0f9b976eee9f87f7034fbd610b8e3552c14e630d695b7793cf73b639605
3
left
b9b1badad899c23f3f8a9724e255b468189149c4f6334fe49e2066b15a3bb57c
4
left
f4ba71f6e3bd585f070eb3ac852496e12ab993c7f51cf033f7895aad8996046d
5
right
3e35cbb152ebdc46b7a561064613c01e3e78fc967395af21bb7fe503b0a56b43
6
right
da3d768220597c0636847e1f28e766d918af491f20ffa568c070cdc81dea7c6a
7
right
7b91ffdbc0775ceb1efdc9c047cbf134a340783b2dc1627173e9cef778ec1cf8
8
left
5029b4611810c87e9e04fd3af160ed33fa21436626c66ccbd825c959f40bd90c
9
right
559310ef76957df08e5f62efc49ff6649a36113b72a52a9a4471bd1801615514
10
left
f294ff8c83ee2bf537f6f3a850e09ef12f44b3915f1df793eb9ebfc3a7648f55
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