The Internet Archive is back online

It would be better if the Internet Archive was decentralized without a central point of failure, maybe run on something like bittorent.

You say this as if it is an original idea. Of course the IA is working on this and have been for over 6 years. There already is a DWeb version. They have been advancing DWeb infrastructure. The IA hosts all kinds of DWeb developer events.

But it is over 50 petabytes and the IA gets a huge amount of traffic through the regular web that they need to serve quickly and efficiently to their users.

Guess what has happened over 6 years of decentralization of 50 TB? People only seed what they want or care about and there aren't enough seeders to host. They set all this up and nobody volunteers. You're a DWeb advocate and you haven't been seeding. That's a recipe for disaster if they rely on the goodness of volunteer seeders. The IA's mission is broader. DWeb will ever only compliment the IAs mission.

https://blog.archive.org/2021/02/18/behind-the-scenes-of-the...

https://www.bleepingcomputer.com/news/technology/archiveorg-...

If I help seed this DWeb and it turns out it has some copyrighted materials in it, will I be potentially held liable?

You're always responsible for what you, yourself and your computer does. There is a chance EFF/some other organization could help you out in case you end up in court, but that's a maybe, not a guarantee.

Harder to make this argument with encrypted distributed filesystems. If I'm storing a single chunk of an encrypted blob on Filecoin, am I responsible for the entire file even if I don't know what's in it, and I'm only storing a single fragment?