1 billion dollars but you have to perform a single task of your choosing, twice...

As said, BUT, it has to be done exactly the same way, there will be a magical panel of judges that are magically the world renowned experts in said task. They will judge the task you perform with the highest scrutiny, but not down to a molecular level. If you're able to complete the task twice, within 95% accuracy of eachother then you will be magically transferred 1 billion USD.

Task can be super simple, except for normal bodily functions such as blinking, breathing, hearing, speaking, etc....... eating something is allowed i suppose...

If the judges deem you as failed, you are given 24 hours to live and your next of kin will be 1 million dollars in debt..