A Springfield man has pleaded guilty to distributing cannabis on the dark web and laundering his cryptocurrency proceeds, according to federal prosecutors.

The U.S. Attorney’s Office District of Oregon said Robert Kelly O’Neill, 59, waived indictment and pleaded guilty this week to possession with intent to distribute cannabis and money laundering.

Court documents say in 2016, Homeland Security Investigations and the U.S. Postal Inspection Service began investigating the importing and online distribution of controlled substances on dark web marketplaces and exposed widespread laundering of illicit digital currency proceeds in Oregon and across the country.

A dark net vendor, GOLD, received Bitcoin from customers and for a fee would mail or ship cash, according to prosecutors.

Between September 2015 and May 2018, a person using the alias “Resinate” laundered more than $725,000 in illicit proceeds through GOLD and another $167,000 in Bitcoin through a co-conspirator in Springfield, prosecutors said.

Records from the dark websites Silk Road and Silk Road 2.0 also confirmed that in 2013 and 2014, Resinate earned $390,000 in Bitcoin from cannabis sales, according to prosecutors.

In June 2018, law enforcement executed search warrants at residences including O’Neill’s in Springfield. Investigators discovered a cannabis processing and packaging operation in O’Neill’s garage, seized dozens of computers and electronic storage devices and found handwritten notes identifying O’Neill as Resinate, prosecutors said.

O’Neill will be sentenced in April.