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
Cilician
Race
Sandown · 3 July 2026 · 15:00
Product
Top Rated Today (Sly Man) · Top Rated — Top Signals
Advised odds
3/1
Confidence
Speculative
Prompt version
top_rated_v1_2026-07-08
Predicted at
2026-07-08T22:13:45.778884+01:00

Cryptographic Seal

Leaf hash
88c2f406f47db0212a19d5eedc2818e31eb23b200ac08a53a419b800751dabe6
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 22:10:28 BST

Certificate reference

#392

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":"2026-07-13T21:10:28Z","issuer":"saturday-racing.com","predicted_at":"2026-07-08T21:13:45Z","product":"top_rated","product_lane":"signals","race":{"course":"Sandown","external_id":"rac_11989354","internal_id":2423,"race_date":"2026-07-03","race_time":"15:00"},"schema":"sr-pick-v1","selection":{"advised_odds":"3/1","confidence_final":"Speculative","confidence_raw":"","horse":"Cilician","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 left 88851cb34be6697f7a8dadf7ffe1c032a621285e52be2b2f984369795c9dc3dc
2 left 2715d284820e28a0abf6666d6de5d2ce6d21d197442cbc6a2a30d40dc869ea0b
3 right 476337b27cfe68c694a5e30006b77bcfbf1bc2d310c177cf9724fc32d0dea09b
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/