In October 2017, a SWAT team descended on Jameson Lopp’s house in North Carolina. Someone — it still isn’t clear who — had called the police and falsely claimed that a shooter at the home had killed someone and taken a hostage. After the police left, Mr. Lopp received a call threatening more mayhem if he did not make a large ransom payment in Bitcoin.

To scare off future attackers, Mr. Lopp quickly posted a video on Twitter of himself firing off his AR-15 rifle. He also decided he was going to make it much harder for his enemies — and anyone else — to find him ever again.

Mr. Lopp, a self-described libertarian who works for a Bitcoin security company, had long been obsessed with the value of privacy, and he set out to learn how thoroughly a person can escape the all-seeing eyes of corporate America and the government. But he wanted to do it without giving up internet access and moving to a shack in the woods.

Many celebrities and wealthy people, wary of thieves, paparazzi and other predators, have tried to achieve Mr. Lopp’s vision of complete privacy. Few have succeeded.

Mr. Lopp viewed the exercise as something of an experiment, to find out the lengths he’d have to go to extricate himself from the databases and other repositories that hold our personal information and make it available to anyone willing to pay for it. That helps explain why he was willing to describe the steps he’s taken with me (though he did so from a burner phone, without disclosing his new location).