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 Yogini
Race Killarney · 13 July 2026 · 20:00
Product Pick Winner (Mr Fox)
Advised odds 15/2
Confidence Medium
Prompt version v3_b557cbd4
Predicted at 2026-07-13T09:38:45.483162+01:00
Cryptographic Seal
Leaf hash
a1bd73dd1f59b899fb89de40429a4f6c4bee835e3a4844b63a794b285cf853b7
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":"2026-07-13T21:10:26Z","issuer":"saturday-racing.com","predicted_at":"2026-07-13T08:38:45Z","product":"pick_winner","product_lane":"","race":{"course":"Killarney","external_id":"rac_13000000143","internal_id":2819,"race_date":"2026-07-13","race_time":"20:00"},"schema":"sr-pick-v1","selection":{"advised_odds":"15/2","confidence_final":"Medium","confidence_raw":"Medium","horse":"Yogini","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
a26d369ec2ed16595bccc5f1e02f0a6c4f096d5571786a970e11e4671d18850e
2
right
feee9eafec510bfbe11af328b0ef3e18174db0255f4855ae0f3f1fff64978129
3
right
2828166431fff0865a695fa97aaf44532295cdadce957fc42f8cd063ecb48e85
4
left
4a5f204509d26a7729f490c413ed3d966174d8484fdaf1680f81ffe7df3b5ea9
5
left
6cc0f6a782452a7dd8bb107d1804797227464bdb24ff97dd4dd25dee595b1bad
6
right
122ad8c3830c8717ffb38cb520c4f4916841ee7438458e522353d27690ee23f0
7
left
8ecad2493bca745bc0527c62a707de924168e44ffe66dc178ff870ba82aa045e
8
left
9a677d21c2cd9160c97a508996b4307c85b3aa9b95597b3eca8c62f864ebab76
9
left
c1144f953d5061b1e3ec979350290e5e7106de524b96bf728133a9efff0efd59
10
right
e25c8d2b935f54f140bee5f6c7b02a176294b2ed6153543d94a92504abeba294
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