I have seen very painfully long proof of work demands by Anubis on thebrainbin.org.. not sure if that is triggered by a Tor exit node IP. Now I get access denied from Anubis, for the first time ever, when visiting quokk.au. Hope it’s not going to become a trend.
Marketing works wonders on people. My devices are doing a lot of work when Anubis presents, to produce what you claim is not a proof-of-work, that is for some reason a barrier to entry. “Firewall” vaguely refers to perimeter security -- not even web-specific. If you think my browser is just waiting around for for an open slot, this does not explain the time lapse consistency. Please explain why “Calculating...Difficulty: 6,…Speed: …kH/s” is presented, if this is not a proof-of-work. Looks like kilohashes to me.