Saturday Racing · The Transparency Ledger

Certificate of Pick Authentication

Issued under schema SR-PICK-V1

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
Roxelina
Race
Wolverhampton (AW) · 6 July 2026 · 19:00
Product
Top Rated Today (Sly Man) · Top Rated — Top SR Ratings
Advised odds
10/11
Confidence
High (raw 159)
Prompt version
top_rated_v1_2026-07-08
Predicted at
2026-07-08T22:13:45.428067+01:00

Cryptographic Seal

Leaf hash
46620664294b00ea90550117e92b88dc305c461b3ac47d793cb61d5c111d2ec0
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.

Signed

Saturday Racing Editorial Ledger

Committed 13 July 2026 at 22:10:27 BST

Certificate reference

#349

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":"2026-07-08T21:13:45Z","product":"top_rated","product_lane":"ratings_sr","race":{"course":"Wolverhampton (AW)","external_id":"rac_11992006","internal_id":2529,"race_date":"2026-07-06","race_time":"19:00"},"schema":"sr-pick-v1","selection":{"advised_odds":"10/11","confidence_final":"High","confidence_raw":"159","horse":"Roxelina","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.

#PositionSibling hash
1 right 46c0f63eb8c90fd2e3968325fe5d4fc0ad8f228ddcd7a901ec6a22e411f95a09
2 right fa4bf1100135f98a11bbad94295eb89162a4d65ecfde08027b119a1398068cbb
3 right e6a8fd43dea4ff72564b170d5e6ee29d5bc1663a4e4454f995665a3407c798e6
4 right e2b7f806ad9a6eba5df0c3eea8f068305d20f2fc50dc409c583ba80dca42441f
5 right 1a7c6b029f58cae1bf8086ed6fa83e42a03e521eed5dfafe556fe3f16191d19b
6 right 6eaf7a3b4dbf7de787d708e4aeca0643d7190dfd48ea1d758c6741d5876fc46d
7 left abd1f2af8516869713aed81c9f26f27b73cfb533f542009e428008b662810a09
8 left 258ce92dcccd21d1d3bbbb39ac789ad1349e3db2aadbe660b7ed0a8637d8148f
9 right a37bae6f6b56af99833b4e131855bb087cd4e3a90918a4dfd59d83ac87f8f303
10 right e25c8d2b935f54f140bee5f6c7b02a176294b2ed6153543d94a92504abeba294

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