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 Lacrima
Race Worcester · 10 July 2026 · 19:51
Product Pick Winner (Mr Fox)
Advised odds 10/11
Confidence Medium
Prompt version v3_b557cbd4
Predicted at 2026-07-10T09:31:22.324879+01:00
Cryptographic Seal
Leaf hash
76780f6b7bcfc6583c16096385dbd1ab2a4ee0dc602e173f921bada776ca1d1c
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":"2026-07-10T08:31:22Z","product":"pick_winner","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":"Medium","confidence_raw":"Medium","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
right
774337e90873c5c2b2f735a5d2074ea5ca987edfa870e89708ef9302c7e5e968
2
right
2ac4e9c8ff82125ffc6e717734b3ed0ef8a061df002e116d5a40db169f3b016e
3
left
fa6b3839eebf0acc6b29d83030ff202c827739fdaca619d6b436e1283426fb47
4
left
fa8d66fb4a16e5a39f9e86f04dd9d89e049a328c3dd225052cf06e1276099ae2
5
left
200f5868f8605f5ad05cb5d5a0f64bb9ef0d04aa83b4e59e3878109d60cf7510
6
right
11a3ade288925daffe08c7c49239d533eac4edd4330aa411ec5a586d3ef88887
7
left
b20426c9805bd5f17d7d0c3747a91f6539d868cc80d6de1f3197b66c180d007b
8
right
f1c99ba68a2d45d1bb79f40edc8b534afd41f7a23fe00327643be3c20b514374
9
left
c1144f953d5061b1e3ec979350290e5e7106de524b96bf728133a9efff0efd59
10
right
e25c8d2b935f54f140bee5f6c7b02a176294b2ed6153543d94a92504abeba294
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