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IMO, the current way that works is a pretty massive vulnerability which this completely solves. I'd rather they deal with that rather than fretting about some off-by-one error which they managed to make in the linting tool too. It's software. We know it's screwed up like that.
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Most people checking CT are just going to see a bunch of Let's Encrypt, nothing else, and call it good because they trust LE. Meanwhile, they verify domain control via ~2x unauthenticated HTTP requests happily hopping between a bunch of servers / domains to find the challenge.