VERIFIED · SR-PICK-V1 · SATURDAY RACING · VERIFIED · SR-PICK-V1 ·
SR
AUTHENTICATED
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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 Catalani
Race Killarney · 14 July 2026 · 20:10
Product Pick Winner (Mr Fox)
Advised odds 11/1
Confidence Speculative
Prompt version v3_b557cbd4
Predicted at 2026-07-14T09:28:55.369370+01:00
Cryptographic Seal
Leaf hash
b4ccbc4405c36acfceda232f71dff9ec86b14483d32467b6afd7e4053295b2c4
Your browser
…
Batch
14 July 2026 · 40 leafleaves
· inspect batch →
Merkle root
072e707d9142102581b7395437488a0c34e70eca6717bd16f437ee6a3030212a
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":"llm","prompt_version":"v3_b557cbd4"},"committed_at":"2026-07-14T08:28:55Z","issuer":"saturday-racing.com","predicted_at":"2026-07-14T08:28:55Z","product":"pick_winner","product_lane":"","race":{"course":"Killarney","external_id":"rac_13000001079","internal_id":2860,"race_date":"2026-07-14","race_time":"20:10"},"schema":"sr-pick-v1","selection":{"advised_odds":"11/1","confidence_final":"Speculative","confidence_raw":"Speculative","horse":"Catalani","position_claim":"win"}}
Copy JSON
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
b0e72681a8173939b8e1aae69ac668426164d6d8634a88e7a665fc5ba36de08e
2
right
2886f078cdf4de1bee91e2aa7a11ed025214d6ba3f8edc8187b31297dbe0a698
3
left
7e5481feb57a8ae5f2418fec52e792fbc8764e52733bc1acd27421506e6eee16
4
left
0dbb32fc0313bdcfdf06e77653149784e2d45ca221e21a2f38172bcca09a4a28
5
left
419044a95c8d9b4f7b2aa648c0e3d19dd2fd31b2be497eb6bc5c3e8f15165528
6
right
1172ad24b701d8eee390448495367143c88291d705fba7a117c56c25df2973af
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