> On two different occasions I contacted the FBI about the project and offered to provide full sets of data that I had collected. The FBI twice rejecting a set of information that could have reasonably led to the arrest of several pedophiles seems like a big mistake.
"full sets of data" seem to include Tor exit node IP addresses (public information that you can obtain from the Tor directory service) and a few possible real IP addresses—but not ones he can directly tie to any actual CP. As he says, "Admittedly, after introducing the security scanner, traffic patterns changed. Scans on the server dropped and some of the users who opted to run the software appeared to be government or private researchers. Most visitors were reluctant to run the security scanner." Later he says that between 4 and 7 percent of his registered users ran the scanner. He never says how many registered users he had, and never said how many uploaded child porn or could be directly connected to it (and how many of those ran the scanner)
I'm not surprised the FBI turned him down.