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 Happy Banner
Race Epsom Downs · 9 July 2026 · 20:22
Product Pick Winner (Mr Fox)
Advised odds 3/1
Confidence Medium
Prompt version v3_b557cbd4
Predicted at 2026-07-08T19:04:17.741585+01:00
Cryptographic Seal
Leaf hash
9dee4b5fe712816e7e518abd5bac418d8066ea489ee4fdbdce94571f872ed9b4
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":"2026-07-08T18:04:17Z","product":"pick_winner","product_lane":"","race":{"course":"Epsom Downs","external_id":"rac_11990628","internal_id":2627,"race_date":"2026-07-09","race_time":"20:22"},"schema":"sr-pick-v1","selection":{"advised_odds":"3/1","confidence_final":"Medium","confidence_raw":"Medium","horse":"Happy Banner","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
9e042c6182caca3616b8e968858816baf0c32de256cb43c84257a20a690637e0
2
left
0a9cd17b20674a8e56a0bdfe5f62ce9c52c5923daee0b1b7fc8680291cc7fddc
3
right
b1e93f0861f3713de1a9907bad360bdd45bc1a5af1cf180f7260be903f24670d
4
left
29b9329678105f7b94799666df64bff979212f7378d609f460469c33636d7925
5
right
32969f22a66e840a786dccb6b5ee6e302709d53b2206fb9aebccabc2478b63f7
6
right
122ad8c3830c8717ffb38cb520c4f4916841ee7438458e522353d27690ee23f0
7
left
8ecad2493bca745bc0527c62a707de924168e44ffe66dc178ff870ba82aa045e
8
left
9a677d21c2cd9160c97a508996b4307c85b3aa9b95597b3eca8c62f864ebab76
9
left
c1144f953d5061b1e3ec979350290e5e7106de524b96bf728133a9efff0efd59
10
right
e25c8d2b935f54f140bee5f6c7b02a176294b2ed6153543d94a92504abeba294
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