Memberships are valid for one year through the end of the month. For example, a membership purchased July 4, 2019 will be valid until July 31, 2020.
In order for a membership to be considered a founding membership, it must have been purchased prior to April 30, 2018. Founding memberships must be renewed every year or their benefits will lapse. In addition to the prestige of membership in the founder class, founding memberships provide the same benefits as standard memberships.