They have a kickstarter [0], which they apparently blew past their funding goal on their first day [1]. They also have a github [2] but it doesn't look like anything is published there yet. They mention Q4 2021 release.
Destin is a wonderful person, and I love the vision, but the details are pretty sparse so far so it's hard to judge based on merit. Their website is basically a list of their goals and a link to the video and the kickstarter is the same, ideally it would say everything that was said in the video and more. Hopefully they can flesh out all of their public surface area soon.
I look forward to reviewing this from a technical perspective once they've actually published the code. I would be interested in hearing the reasoning around their choice of technologies: C++, OpenSSL, mobilie-first, etc, and which other technologies they evaluated and compared, Signal, Mastodon, Matrix, Rust, etc.
Honestly I think the legal side (i.e. expanding the 4th amendment's meaning of "effects" to include owned digital assets and metadata) will be the bigger lift. Whether this means suing the government and getting the supreme court to judge on the right side, or the nuclear option of passing another amendment, we need to start down the legal path ASAP since it will take the longest. Like, we could develop 20 technical solutions to this problem of the same caliber as Signal or 4Privacy in the time that it would take to solve the legal side.
[0]: https://www.kickstarter.com/projects/4privacyapp/4privacy-ap...
[1]: https://www.kicktraq.com/projects/4privacyapp/4privacy-app/
[2]: https://github.com/4PrivacyEngine/4PrivacyEngine-Core
