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 Ataturk
Race Chepstow · 8 July 2026 · 20:46
Product Pick Winner (Mr Fox)
Advised odds 5/6
Confidence Medium
Prompt version v3_b557cbd4
Predicted at 2026-07-08T07:55:20.220445+01:00
Cryptographic Seal
Leaf hash
a9052daa992044dab526c56b29356967e993d4606f231ea36544106100ddb5b4
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":"2026-07-08T06:55:20Z","product":"pick_winner","product_lane":"","race":{"course":"Chepstow","external_id":"rac_11990264","internal_id":2588,"race_date":"2026-07-08","race_time":"20:46"},"schema":"sr-pick-v1","selection":{"advised_odds":"5/6","confidence_final":"Medium","confidence_raw":"Medium","horse":"Ataturk","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
a8e2694df435321dae66a859109ea5ca739920460ef1ccb377894571b173be1c
2
right
7d30401fe2ef89a9fc2188deff23c77d14ee12b80aa06121947c55fc045ba1b4
3
left
0f96068ab6c2e340a15e811611bea980593f5a45bee15905056d3676bdd0fcca
4
left
5e2c7d57ce0445cdeb1628e9f339941e2a0aa0ab27faf3875e3ba3687f624203
5
right
ab7be46c71776e90ed1be2d05579d318bc824c9a02b32e020e96e77b4dec4ce1
6
left
a0db52a97d82a2741b38fc0eeb784af6793ea6882d82b807019bad2067115cb4
7
left
8ecad2493bca745bc0527c62a707de924168e44ffe66dc178ff870ba82aa045e
8
left
9a677d21c2cd9160c97a508996b4307c85b3aa9b95597b3eca8c62f864ebab76
9
left
c1144f953d5061b1e3ec979350290e5e7106de524b96bf728133a9efff0efd59
10
right
e25c8d2b935f54f140bee5f6c7b02a176294b2ed6153543d94a92504abeba294
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