How did you get these ready for release on Public Domain Day without breaking copyright law during the production process? I am not a lawyer, so I have only a surface understanding.
I’m not based in the US and have no intention of travelling there, so I don’t count myself in much danger for US copyright law.
Regardless, my understanding of copyright is that people broadly get annoyed when you infringe by distribution. In this case the distribution didn’t happen until the copyright had expired. People preparing these projects for later launch do it purely on their own machines, and nothing arrives at Standard Ebooks until the day of release.
It would be close to impossible to demonstrate loss, which is always highly relevant in copyright suits (not a lawyer, but I have scanned and digitized hundreds of thousands of pages at https://CatholicLibrary.org and read up on the topic over the years).
