Don't tell a soul
The ticket would go in our safe deposit box, and the only person I'd tell is our attorney. I'd have him set up a revocable trust, with him as the trustee, and my family as beneficiaries. When all is ready, he would go claim the prize.
In my state, the ticket can be claimed by a trustee, on behalf of a trust. For publicity purposes, only the trustee would be identified. The only one knowing my family would be the IRS, and briefly the lottery commission: they are required to check if winners owe back taxes or child support.
The trust would quickly be dissolved and the proceeds transferred into a family limited partnership (for protection of assets). A substantial part would go into a charitable gift fund. We would set up distribution of the maximum allowable amount per year free of gift tax to extended family members. Currently, it's $13,000/year, and if both my wife and I make the gift, each person would receive twice that amount, each year.
However, educational expenses and medical expenses are not included in the annual gift limit, as long as we pay the provider directly. So, we would arrange a way to pay medical bills and send the children of our extended family to college, if they want.
Then, we would resign our jobs, hit the road and see the world. We only travel a few times a year now, but this would be a permanent vacation.
I'd probably never tell anyone we won the money, aside from our lawyer, accountant, and financial manager. If anyone asks where the money comes from, I can always say that I bought lots of Apple stock back in 2003.
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Most states if not all have rules that the winners names must be made public. Just a little FYI to all those who plan on winning and not telling anyone.
In some states, there are ways around this. In others, it won't work. Check your state laws or ask your lawyer.