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 Safe Harbor
Race Wolverhampton (AW) · 6 July 2026 · 20:00
Product Horses to Watch (Sly Man)
Advised odds 5/2
Confidence Medium
Prompt version htw_backfill_v1
Predicted at 2026-07-07T09:56:15.914606+01:00
Cryptographic Seal
Leaf hash
94b5ecdf62f26340cb8f64b8bb584a2b1eeb1d0ebe6aafc334b8f14638865bfc
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":"story_score","prompt_version":"htw_backfill_v1"},"committed_at":"2026-07-13T21:10:27Z","issuer":"saturday-racing.com","predicted_at":"2026-07-07T08:56:15Z","product":"horses_to_watch","product_lane":"","race":{"course":"Wolverhampton (AW)","external_id":"rac_11992045","internal_id":2531,"race_date":"2026-07-06","race_time":"20:00"},"schema":"sr-pick-v1","selection":{"advised_odds":"5/2","confidence_final":"Medium","confidence_raw":"","horse":"Safe Harbor","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
94a511832f5305f221d91dff8100dd559c43cfb85c0a4b2f06b034a51b0c9087
2
right
ebc87738e7455be08ee264e4e7fa4db7a1b3d6dbd41bafbd0f416b991ba3b783
3
left
2b231416bb1128c823ed9fbfe58344c3356854f8fb8072369ac38a6d9d9181cf
4
right
5a048f78e22603bd447f1bb0a0cd4fc6a15466f4f3da16b67aa1766675181b70
5
left
ff396369426df07e2cc9d7219a4648a240b65996a5f7ad862260181ed3b5063a
6
left
de4c18b344759b795e65fd7d556764fb84fe70fe3ed694d8fbe24938047d102e
7
right
4c56aa4f1d1039c6ad4821c5c72376f7d1ccb9ab4f942fb7d343352d40712b8c
8
left
9a677d21c2cd9160c97a508996b4307c85b3aa9b95597b3eca8c62f864ebab76
9
left
c1144f953d5061b1e3ec979350290e5e7106de524b96bf728133a9efff0efd59
10
right
e25c8d2b935f54f140bee5f6c7b02a176294b2ed6153543d94a92504abeba294
Print / save this certificate