The only way to be sure that what you are buying is “official” is to purchase your tickets from a company that has agents that will purchase in the real world the Powerball tickets online that you have selected. If you are a more trustworthy person and don’t need a scanned copy of your Powerball tickets online then by all means go for an online lottery ticket provider that follows the insurance model. 
Some retailers that sit on state lines often offer both state lotteries with state boundaries clearly marked, since such sales still have to occur in the physical state it is offered. One retailer located along U.S. Route 62that is largely in Sharon, Pennsylvania but has a small portion lying inMasury, Ohio sells both the Ohio Lottery and the Pennsylvania Lotteryat one location. The first modern US joint-state lottery game was formed in 1985 inMaine, New Hampshire, and Vermont. In 1988, the Multi-State Lottery Association (MUSL) was formed with Iowa, Kansas, Missouri, Oregon,Rhode Island, West Virginia, and the District of Columbia as its charter members; it is best known for Powerball, which was designed to create large jackpots. Another joint lottery, The Big Game (now called Mega Millions), was formed in 1996 by six other lotteries as its charter members.
The US Powerball is a standard lottery draw game based and operated from the golden State of California. The US Powerball has been making millionaires and multi-millionaires since its first drawing way back in 1992. With over 25 years of experience in the lottery industry, the Powerball, along with many other State lotteries, has broken through the final glass ceiling and transformed itself from an interstate lottery into a truly international lottery of global reach. 
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