So, back in 2015, there were multiple groups creating encrypted, anonymizing networks (many of which are still in operation today): #I2P, #Tor, #GNU, #Namecoin.
They went to the #IETF to standardize how browsers would handle their special top-level domains.
(I warned you this was nerdy).
The idea here was that if a user typed domain.i2p or domain.onion into a browser, the browser would leak that request to search engines or DNS servers.
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