A record of what happened
Progress you can inspect.
Open a work record to see its outcome, verification label, and limits. A failed check belongs in the record too.
Your work records are private.
Sign in to inspect your work. Public research and historical receipts are available separately.
Sign in to your workExplore public evidence
A record has a date and a scope.
Historical runs show what was observed at the time. Check their limits before applying the result to today's product.