Is it permissible to obtain a deed for a large sum of money won from an online lottery game, where one's name was entered unintentionally, knowing that the website belongs to a non-Muslim country, with the aim of personal or public benefit?

The game of lottery is explicit gambling, and it is not permissible to participate in it or to earn money through it, due to the Almighty's saying: "O you who have believed, indeed intoxicants, gambling, [sacrificing to] stone altars, and divining arrows are but defilement from the work of Satan, so avoid it that you may be successful." It is not permissible to cash the check because it is ill-gotten wealth. Be aware that most of these winning messages are lies and deception to lure people and take their money, and paying fees to claim the prize is explicit participation in gambling.