There have been some interesting DEFCON talks on the subject.

DEFCON 19: And That’s How I Lost My Eye: Exploring Emergency Data Destruction (w speaker) / Invidious: Nadeko or instance selection

DEF CON 23 - Zoz - And That’s How I Lost My Other Eye…Explorations in Data Destruction (Fixed) / Invidious: Nadeko or instance selection

Some of the Invidious instances are busted due to recent changes but Nadeko seems to be working for now.