Every hour of tomorrow, for four price areas and ten reserve markets. Issued before the market closes, locked, and scored in public when the real prices arrive.
The forecast exists, hashed and timestamped by an independent authority, before anyone knows the price. Then the price arrives and the score is written next to it. Nothing is re-run.
Each issue for the markets you pick, by email, with its hash and receipt: day-ahead at 11:01, reserves at 00:01 and 17:01. The first 50 on the list get it free while the service is in shadow.
The 11:01 spot issue and the reserve issues for your area, by email, with the same hash and receipt you saw above. The first 50 on the list get it free while the service is in shadow.