The Bottled In Bond Act of 1897 was written to ensure the consumer was informed the contents of that bottle were of quality standards and made in compliance with industry standards. In modern times, this ensures the consumer knows three major things: It’s at least 4 years of age and all the whiskey is harvested from the same season, it is bottled at exactly 100 proof, and perhaps most importantly, the labelling states where it’s made and who bottled the whiskey inside.