Taxpay

If he chooses not to bottle in bond, he taxpays the spirits in bulk at 100° proof and then, after taxpayment, reduces the product with water to any proof down to 80° (usually between 86° and 80°).

[…] affix to each package one or more internal-revenue stamps of the proper class and denomination as will fully taxpay the contents of such package, unless such stamp or stamps shall have been affixed abroad […]