LAS VEGAS – The referee and judging assignments are set for this month’s UFC 183-headlining superfight.

Veteran official John McCarthy, who’s overseen some of the sport’s biggest fights throughout the history of the sport, will ref the headliner between former UFC middleweight champion Anderson Silva (33-6 MMA, 16-2 UFC) and former Strikeforce welterweight champion Nick Diaz (26-9 MMA, 7-6 UFC).

McCarthy was picked from a pool of officials that also included Herb Dean and Mark Smith.

UFC 183 takes place Jan. 31 at MGM Grand Garden Arena in Las Vegas. The main card airs on pay-per-view following prelims on FOX Sports 1 and UFC Fight Pass.

The five-round middleweight fight will be judged by veteran officials Sal D’Amato, Marcos Rosales and Glenn Trowbridge.

All of the fight-night officials were determined at today’s Nevada State Athletic Commission hearing in Las Vegas, which MMAjunkie attended. McCarthy earns $1,500 for his work. Judges are to be paid $1,200.

In additional administrative actions, both Silva and Jake Shields (30-7-1) were licensed for their upcoming contests (Shields fights at Saturday’s WSOF 17 event in Las Vegas). Both fighters were asked to appear by phone in front of the commission because they are each over the age of 35.

Shields’ license was granted conditionally upon the completion of his necessary medical paperwork.

The complete UFC 183 lineup now includes:

MAIN CARD (Pay-per-view, 10 p.m. ET)

Nick Diaz vs. Anderson Silva Kelvin Gastelum vs. Tyron Woodley Al Iaquinta vs. Joe Lauzon Tim Boetsch vs. Thales Leites Thiago Alves vs. Jordan Mein

PRELIMINARY CARD (FOX Sports 1, 8 p.m. ET)

Sara McMann vs. Miesha Tate Derek Brunson vs. Ed Herman John Lineker vs. Ian McCall Rafael Natal vs. Tom Watson

PRELIMINARY CARD (UFC Fight Pass, 7 p.m. ET)

Diego Brandao vs. Jimy Hettes Ildemar Alcantara vs. Richardson Moreira Andy Enz vs. Thiago “Marreta” Santos

For more on UFC 183, check out the UFC Rumors section of the site.