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 Ottoman Chief
Race Doncaster · 9 July 2026 · 14:10
Product Top Rated Today (Sly Man) · Top Rated — Top Signals
Advised odds 7/4
Confidence Speculative
Prompt version top_rated_v1_2026-07-08
Predicted at 2026-07-09T08:02:17.676209+01:00
Cryptographic Seal
Leaf hash
ab8fd8707e9200f1797583d3bcb83d54b4aa85cec4ec8289c5de5859cfcdafd3
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":"top_rated_v1_2026-07-08"},"committed_at":"2026-07-13T21:10:27Z","issuer":"saturday-racing.com","predicted_at":"2026-07-09T07:02:17Z","product":"top_rated","product_lane":"signals","race":{"course":"Doncaster","external_id":"rac_11990498","internal_id":2616,"race_date":"2026-07-09","race_time":"14:10"},"schema":"sr-pick-v1","selection":{"advised_odds":"7/4","confidence_final":"Speculative","confidence_raw":"","horse":"Ottoman Chief","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
ab327131fb6fc1b95acce2ad4c0ff5711d35c11e6febeaed79d303e5ecd59413
2
left
64278ec1e112a967bda7c72c0313ef27a60f1e6857390249464e94b2495e933e
3
right
cac3f37595b72bcceba3cf23544a237166fdc7fbd158d0f6c35f52ec51ebb703
4
right
0bad6b0ab947ca391c272078326ee8ebfa8c798c05d7b6d79201c0488c3baf4c
5
left
144959ae456bbc727f1991fa893d2e1aef3deb58747954bbd3b01a9d5607bb29
6
left
a0db52a97d82a2741b38fc0eeb784af6793ea6882d82b807019bad2067115cb4
7
left
8ecad2493bca745bc0527c62a707de924168e44ffe66dc178ff870ba82aa045e
8
left
9a677d21c2cd9160c97a508996b4307c85b3aa9b95597b3eca8c62f864ebab76
9
left
c1144f953d5061b1e3ec979350290e5e7106de524b96bf728133a9efff0efd59
10
right
e25c8d2b935f54f140bee5f6c7b02a176294b2ed6153543d94a92504abeba294
Print / save this certificate