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 Creative Queen
Race Carlisle · 9 July 2026 · 16:20
Product Pick Winner (Mr Fox)
Advised odds 3/1
Confidence Medium
Prompt version v3_b557cbd4
Predicted at 2026-07-08T18:58:31.458078+01:00
Cryptographic Seal
Leaf hash
700af008f9e1ea5a06fd1c1c333f8b7ee00af2df7bbcecb4a1e9280ab42257c5
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":"2026-07-13T21:10:27Z","issuer":"saturday-racing.com","predicted_at":"2026-07-08T17:58:31Z","product":"pick_winner","product_lane":"","race":{"course":"Carlisle","external_id":"rac_11990407","internal_id":2614,"race_date":"2026-07-09","race_time":"16:20"},"schema":"sr-pick-v1","selection":{"advised_odds":"3/1","confidence_final":"Medium","confidence_raw":"Medium","horse":"Creative Queen","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
6f52ba0da1f44cb4e17e9c7297f8e7ed5014391149acdba8801972bc27b968c0
2
left
b82dcd505b4806ab9e96886c0a46f4bf4b3a07cbff354a66f54d698b695c854b
3
right
cd8e485525486f30da292aa155f1e4f99ec27aff7bd4d9c1038d0a5bb77f6970
4
right
09181a3b616be26fd777ab06f7478c4d61af8911e4c1da467d5c39f85d7f8eba
5
right
c362f8f13d29a49f9fc723913698178dc30b6ecc7c385c0482b3e28c896819f8
6
right
11a3ade288925daffe08c7c49239d533eac4edd4330aa411ec5a586d3ef88887
7
left
b20426c9805bd5f17d7d0c3747a91f6539d868cc80d6de1f3197b66c180d007b
8
right
f1c99ba68a2d45d1bb79f40edc8b534afd41f7a23fe00327643be3c20b514374
9
left
c1144f953d5061b1e3ec979350290e5e7106de524b96bf728133a9efff0efd59
10
right
e25c8d2b935f54f140bee5f6c7b02a176294b2ed6153543d94a92504abeba294
Print / save this certificate