Certificate of Pick Authentication #597 · Saturday Racing

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: Almeraq
Race: Newmarket · 11 July 2026 · 16:35
Product: Top Rated Today (Sly Man) · Top Rated — Top OR Ratings
Advised odds: 6/1
Confidence: High (raw 119)
Prompt version: top_rated_v1_2026-07-08
Predicted at: 2026-07-11T08:00:22.730290+01:00

Cryptographic Seal

Leaf hash: 899a7aff1db7e30f47339f39fbfdc9e33a7b7ea585fdda3632c786e312309f3d
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":"2026-07-13T21:10:26Z","issuer":"saturday-racing.com","predicted_at":"2026-07-11T07:00:22Z","product":"top_rated","product_lane":"ratings_or","race":{"course":"Newmarket","external_id":"rac_11947923","internal_id":2727,"race_date":"2026-07-11","race_time":"16:35"},"schema":"sr-pick-v1","selection":{"advised_odds":"6/1","confidence_final":"High","confidence_raw":"119","horse":"Almeraq","position_claim":"win"}}

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	8962c9d7d8cb1de2bab9171968bb744f467c2d9483da0ca7150bb1ca762051aa
2	left	b5a92968f0127d9612e932363e9eae3efc3bcc6ac1609982ec2f335d6c2b7035
3	left	703ba76c4c550261f3984757cd3f43a0d1e5c36fddbf1e0271cca4d305225329
4	left	3c66b199767f094303781e5ce3f08d349d3262094eae7a029e0035ae3fa8ceb6
5	right	eb17e33f2f5cadee3c74fb941d20e5b7162c8357ed519bf251859b425f77bffe
6	right	9cd04c901322f010a3f4b765f8334a04feb06990354fccd9484e7e135228e743
7	right	4c56aa4f1d1039c6ad4821c5c72376f7d1ccb9ab4f942fb7d343352d40712b8c
8	left	9a677d21c2cd9160c97a508996b4307c85b3aa9b95597b3eca8c62f864ebab76
9	left	c1144f953d5061b1e3ec979350290e5e7106de524b96bf728133a9efff0efd59
10	right	e25c8d2b935f54f140bee5f6c7b02a176294b2ed6153543d94a92504abeba294

Server-reported status: off_chain_verified · Ledger overview at /verify/