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. 

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The 2015 changes extended the main ball pool to 69 balls, adding another ten numbers. However, at the same time, the Powerball pool decreased from 35 to 26. This means that although the overall odds of winning the jackpot have increased to 1 in 292 million, the overall odds of winning any prize have decreased to 1 in 24.87. The first draw incorporating the changes took place on October 7th and also saw an increase in the tier three prize (matching 4+1) climb to $50,000.

On Oct 4, 2015, the Powerball format changed again; the white-ball pool increased from 59 to 69 while the Powerball pool decreased from 35 to 26. While this improved the chance of winning any prize to 1 in 24, it also lengthened the jackpot odds to 1 in 292,201,338.[19] The 4+1 prize became $50,000; the 10x PowerPlay became available in drawings with a jackpot of under $150 million.[20] Three months later, the format produced a $1.5 billion jackpot, double the previous record, after 20 consecutive rollovers.[19][21]
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Lottery winners can choose to receive the money in either an annuity — annual allotments over 30 years — or to get it all at once in a single payment for a smaller amount. For example, the lump sum on the $502 million jackpot would be $301 million, according to lottery site USAMega.com. If a single winner takes the single payment, the federal tax withholding would be over $75 million. Then, there are state taxes too.

In spite of the huge popularity of this lottery draw game it is still an unknown to many that you can buy Powerball tickets online, whether you are in the US or not. To be clear, this doesn’t even mean that you have to be a citizen of the US either. No citizenship & not based in the US? You can still play powerball online and buy lottery tickets online for a number of different lottery draw games. 
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