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
Bishop's Glory
Race
Wolverhampton (AW) · 7 July 2026 · 17:40
Product
Pick Winner (Mr Fox)
Advised odds
4/1
Confidence
Medium
Prompt version
v3_b557cbd4
Predicted at
2026-07-07T08:01:56.100360+01:00

Cryptographic Seal

Leaf hash
1984ef7f279c709990d2d7007d914bd6215b3719e60260ad8f73645c5b1bb15e
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

#75

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":"2026-07-07T07:01:56Z","product":"pick_winner","product_lane":"","race":{"course":"Wolverhampton (AW)","external_id":"rac_11992149","internal_id":2563,"race_date":"2026-07-07","race_time":"17:40"},"schema":"sr-pick-v1","selection":{"advised_odds":"4/1","confidence_final":"Medium","confidence_raw":"Medium","horse":"Bishop's Glory","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 19b8e998020aef6a18b533d4b105c396d262cb2d827dbdc1f55094874b500a7c
2 right c7eb4ad62fe4efcba66dead8bead8776ddedd280d84af8ef1b0f2e903077dcce
3 left cb01287e1cac739b3825c18bb6bb627d61e0489437b1dc522528f319ad927ccd
4 right 5eaa7643dff9394ac1c02bb346859b698f26933dbe81734f6f7345e93607eec0
5 left 62315c85243320991c5085b922e30fc067435bbc3350b83dd5a5a1778045c268
6 right 9bf4f078d9681658c6a8e3b6821b776c17a3347c9178f3ba02ba1f2792cfe5c4
7 left 0af567e55c1ca3698f0d247913af3961bd1e207eb3c7b8dd318659719ff7e32e
8 right 7f26ee208367c64ad8017566de1de4e6ffc26d447963c5f0ab2e3225cec0656b
9 right a37bae6f6b56af99833b4e131855bb087cd4e3a90918a4dfd59d83ac87f8f303
10 right e25c8d2b935f54f140bee5f6c7b02a176294b2ed6153543d94a92504abeba294

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