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ok. That's good to know. I mean it makes sense.

But what is if the case is not 25% disappear instead 35%. At this point, no blocks would be produced right?

Default minimum participation is 33% so if 35% disappear then it keeps going but if 70% disappear then most witnesses would stop producing. Meeting would have to be called and chain restarted (by resetting minimum participation lower temporarily until issue resolved some other way).

Thank you!

Learning new things these days :)