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
Flann Sunna
Race
Ascot · 10 July 2026 · 14:35
Product
Top Rated Today (Sly Man) · Top Rated — Top SR Ratings
Advised odds
13/8
Confidence
High (raw 159)
Prompt version
top_rated_v1_2026-07-08
Predicted at
2026-07-10T09:41:59.404187+01:00

Cryptographic Seal

Leaf hash
cacca5edf5e0dc483040662141734c13224bb2d55c7d80ebd40db93abb9542cb
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 22:10:26 BST

Certificate reference

#513

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":"2026-07-10T08:41:59Z","product":"top_rated","product_lane":"ratings_sr","race":{"course":"Ascot","external_id":"rac_11990966","internal_id":2651,"race_date":"2026-07-10","race_time":"14:35"},"schema":"sr-pick-v1","selection":{"advised_odds":"13/8","confidence_final":"High","confidence_raw":"159","horse":"Flann Sunna","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 cae7e7e34379b1a5c035c32dc8ebde9c5018f718e6eba7cfcca80bd60c03da1b
2 left 0fa4654f4682fd0cc3bd0961dc0627a6d800eeaed4e75d0ac7b6848c1f2a0d91
3 right bdd8bc357237777c706a5215bad48fcbfe586819b5efe6fef9afb82bd7772b4c
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/