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 Spirit Tango
Race Kempton (AW) · 8 July 2026 · 18:03
Product Pick Winner (Mr Fox)
Advised odds 2/1
Confidence Medium
Prompt version v3_b557cbd4
Predicted at 2026-07-08T07:51:48.546833+01:00
Cryptographic Seal
Leaf hash
89b1b2544a5e5d5dec4bd8134461f23dba9352ce733955dd61d1a9b6d576ccdc
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":"2026-07-08T06:51:48Z","product":"pick_winner","product_lane":"","race":{"course":"Kempton (AW)","external_id":"rac_11992188","internal_id":2590,"race_date":"2026-07-08","race_time":"18:03"},"schema":"sr-pick-v1","selection":{"advised_odds":"2/1","confidence_final":"Medium","confidence_raw":"Medium","horse":"Spirit Tango","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
89beee8984e9984a7c13c046992f4e2f41328b1f48bd0865ea95650478c2a0c2
2
right
f8e0630ed35937956e94adea2b7c3d6940042b1e2bea6d215a90a8dce059656a
3
right
90ba3d3224cd74942e3480e89829d3cfdf29c9bb2f1b91d327b0cb51d5cc588f
4
right
d0986b21c8b88d1b93345753607f8d88f454371de7bd1dd950322f7ba0a1fb74
5
left
fd97ad31d6f01aebddc372d49b6d4447ff69649838e727428b09fba1749127fc
6
right
9cd04c901322f010a3f4b765f8334a04feb06990354fccd9484e7e135228e743
7
right
4c56aa4f1d1039c6ad4821c5c72376f7d1ccb9ab4f942fb7d343352d40712b8c
8
left
9a677d21c2cd9160c97a508996b4307c85b3aa9b95597b3eca8c62f864ebab76
9
left
c1144f953d5061b1e3ec979350290e5e7106de524b96bf728133a9efff0efd59
10
right
e25c8d2b935f54f140bee5f6c7b02a176294b2ed6153543d94a92504abeba294
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