This is standard language in every state. My state has it, too. But, let's actually cite it:
11.1(3) By submitting a claim, the player also agrees that the prizewinner’s name may be used for publicity purposes by the lottery.
Note the terminology: prizewinner's name. Let's go back to a previous section:
11.1(1) A prize claim shall be entered in the name of a single individual or organization.
If an organization (which is subsequently defined as a "legal entity", like a trust) is the name. Therefore, for advertising purposes, the trust is the prize winner.
Talk-radio program I’m listening to right now had a lottery official on that also said that state law requires disclosure of trust beneficiaries when a trust is claiming a lottery prize.
Did he cite the law, or did he just claim it like you did -- and then realized that the Lottery Code didn't say that?
I don't mean to disparage the official, but I've caught officials telling half-truth's and sometimes outright untruth's to media. I got an apology and a correction from a university police chief after I pointed out his incorrect interpretation on the use of deadly force in self-defense.
There is a possibility, which maybe you can find: some states require it in order to confirm that the beneficiaries don't owe back taxes, student loans, or child support. But, I didn't find anything like that in the Iowa Lottery Code.
To comply with state law, the names and addresses of beneficiaries of trusts must be collected to ensure compliance with state law and administrative rules to ensure that persons receiving winnings are not among those who are prohibited by state law from participating in the lottery, and persons subject to liens, judgements, and other garnishments comply with said liens, judgements, and garnishments.
The code section pertaining to exemptions from Open Records specifically states that winners names and addresses may not be withheld.
All is in the Iowa Code, section 99G.
This “Trust” forfeited their claim. All your arguments are MOOT.