VERIFIED · SR-PICK-V1 · SATURDAY RACING · VERIFIED · SR-PICK-V1 ·
SR
AUTHENTICATED
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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 Lacrima
Race Worcester · 10 July 2026 · 19:51
Product Horses to Watch (Sly Man)
Advised odds 10/11
Confidence High (raw 21)
Prompt version htw_v2_2026-07-06
Predicted at 2026-07-10T09:43:03.094727+01:00
Cryptographic Seal
Leaf hash
08bc3433a5f14eb21176021b7f21bd770d9e69aaef4b3c70c9a968a45a99534b
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_v2_2026-07-06"},"committed_at":"2026-07-13T21:10:26Z","issuer":"saturday-racing.com","predicted_at":"2026-07-10T08:43:03Z","product":"horses_to_watch","product_lane":"","race":{"course":"Worcester","external_id":"rac_11987755","internal_id":2676,"race_date":"2026-07-10","race_time":"19:51"},"schema":"sr-pick-v1","selection":{"advised_odds":"10/11","confidence_final":"High","confidence_raw":"21","horse":"Lacrima","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
086852dd788239ece1a3f0d21c60f704ae37ed555273a41d2b32ab849b9db82d
2
right
409d54dc51f5581982b9a41557e5ecb1a63ac1e636227fb2066e7ab54e466f8d
3
right
aaae7107f2ff179564814889369c06f8422261ab2ae0b88acbc4941bdddd62c0
4
left
b993b25146a2ccafeb295db73d44aed2a6886818a58dd431a2cd09e33d5dcde8
5
left
397481a13fc9f952f7171371b43350cc56a626159dd2a62c532b87e7335a7e82
6
right
176dfb74ea168aed799314f1c1366361f5a82fdfca5ef82a72a3c3a04d0a9176
7
right
a1446b8f053c3881b7e667ad2875514c1369218939a0da4c16d065175c0bd80d
8
right
7f26ee208367c64ad8017566de1de4e6ffc26d447963c5f0ab2e3225cec0656b
9
right
a37bae6f6b56af99833b4e131855bb087cd4e3a90918a4dfd59d83ac87f8f303
10
right
e25c8d2b935f54f140bee5f6c7b02a176294b2ed6153543d94a92504abeba294
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