Once your ticket is purchased, scanned and uploaded into your account that ticket is yours. Legally and in every other sense possible. The same questions always pop up at this stage of the explanation to new time online lottery players and these doubts can be best explained in further detail in the article on the Iraqi Lottery winner but the gist of it is as follows:
Mega Millions' second-largest jackpot, $648 million, was for the December 17, 2013 drawing. Two winning tickets, one each from California and Georgia, were sold. The holder of the Georgia ticket claimed the next morning; they selected the cash option, which amounted to $173,819,742.50 before withholdings. The holder of the California ticket claimed on January 3, 2014. (The California ticket holder received an equal share, but potentially a larger cash-option amount, as California lottery winnings are exempt from state income tax)." 
Due to falling sales of Hot Lotto (whose final drawing was October 28, 2017), a new version of Lotto America became available on November 12, 2017; its first drawing was November 15, 2017. Lotto America is available wherever Hot Lotto was offered at the time of its final drawing (except New Hampshire.) Lotto America is drawn on Wednesday and Saturday nights after 11 p.m. ET/10 p.m. CT. For each $1 play, bettors choose five numbers from 1 through 52, and a "star ball" numbered from 1 through 10, or ask for terminal-generated numbers. For an additional $1 per play, the bettor can add the "All-Star Bonus" option, which multiplies non-jackpot prizes by 2, 3, 4, or 5. The minimum Lotto America jackpot is $2 million; however, the game's initial jackpot was $15 million; the 13 members chose to augment the jackpot with funds from Hot Lotto, whose final jackpot was not won.
The structure of the draw is one which regular lottery players will be very familiar with; players must pick 5 regular numbers from a pool with a total of 69 numbers and in addition to these regular number picks, you also choose one bonus ball (known as the Powerball) from a pool of 26. These two pools of numbers are mutually exclusive and remain completely separate throughout the drawing procedure. In order to jackpot the US Powerball, you need to match all 5 regular numbers and the Powerball. Do this and you are instant Powerball millionaire – it’s as simple as that!