Certificate of Pick Authentication #706 · 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: Presentandcounting
Race: Newton Abbot · 13 July 2026 · 16:42
Product: Top Rated Today (Sly Man) · Top Rated — Top OR Ratings
Advised odds: 9/2
Confidence: High (raw 117)
Prompt version: top_rated_v1_2026-07-08
Predicted at: 2026-07-13T09:50:10.360415+01:00

Cryptographic Seal

Leaf hash: cd099bc4d1ee8f7dc3eef25d3707f28faad791300dd696d0d50bafbeae18786b
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":"2026-07-13T08:50:10Z","product":"top_rated","product_lane":"ratings_or","race":{"course":"Newton Abbot","external_id":"rac_11998792","internal_id":2804,"race_date":"2026-07-13","race_time":"16:42"},"schema":"sr-pick-v1","selection":{"advised_odds":"9/2","confidence_final":"High","confidence_raw":"117","horse":"Presentandcounting","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	cc4507eb80a9c9049dd2f28252090b96c841ce6fb84d1b1788394b656c5a985c
2	left	db96a5022c7af514df659b87707f5adf4403fddd689125151a2a165440e2672b
3	left	b025175a363176f0669351781be2602edc5003a0632bd8fc4555cbf32c88e905
4	left	e8679a37de4c4ebcd8aba6fef7be63c6847de48d0a11a7add11e7e47a798ec26
5	left	1f43b9fe857f8bff074e76ca1389e5156ba5338ce2270feac8af71847ba29692
6	left	acddd189171186c8bc352e9e4ff896c2fac95bec250bde9a776ff5b7544bdba3
7	right	7b966ba7fb6479ee18f2a8f9b8925b3c3366b9fe81cdbeb08938a02c83890686
8	right	f384b0629d9042022b8062f38497000b02dafa843e81b7fba3c37144f3b49f92
9	right	559310ef76957df08e5f62efc49ff6649a36113b72a52a9a4471bd1801615514
10	left	f294ff8c83ee2bf537f6f3a850e09ef12f44b3915f1df793eb9ebfc3a7648f55

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