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 Rappell
Race Limerick · 11 July 2026 · 18:00
Product Pick Winner (Mr Fox)
Advised odds 2/1
Confidence Medium
Prompt version v3_b557cbd4
Predicted at 2026-07-11T07:52:32.455034+01:00
Cryptographic Seal
Leaf hash
2d8f93f92b45ba36fdc0b85658089dd86a0d1b5baf802ba5a4df6d4b32f925a7
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":"2026-07-11T06:52:32Z","product":"pick_winner","product_lane":"","race":{"course":"Limerick","external_id":"rac_12018396","internal_id":2744,"race_date":"2026-07-11","race_time":"18:00"},"schema":"sr-pick-v1","selection":{"advised_odds":"2/1","confidence_final":"Medium","confidence_raw":"Medium","horse":"Rappell","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
2d7d7a47d9c8a2299d90540c42079088d2d0fa2a2e4c76f3c32aad1607d5becf
2
left
fe150c85141c884910375fcb648e53e8c8be1d8d9b2922b2056a804b38a682ed
3
left
ce55ea6b9a1f59c154ed70e883f744e68f6b8823a408cd3d09102e708a56cbfb
4
right
c5cb19c52ac286b7dfac66916c18b3a39c85a6a224be285fe3b4c244bcb0ffa5
5
right
3e0f8231daebd0e796cd717336eb322ee18dc97f3c190073f937036a0fef207f
6
right
7b82e1439f3e2ced375831c6c20f3fbb9f5a25088a3ad284db7ae38222b4fb9a
7
right
5f0f7abcd778c76063fcb7f47d37dd69ca800d95c3310c502cc42ed16873af2c
8
left
258ce92dcccd21d1d3bbbb39ac789ad1349e3db2aadbe660b7ed0a8637d8148f
9
right
a37bae6f6b56af99833b4e131855bb087cd4e3a90918a4dfd59d83ac87f8f303
10
right
e25c8d2b935f54f140bee5f6c7b02a176294b2ed6153543d94a92504abeba294
Print / save this certificate