Michael Conlan has been fined €9,300 by the International Boxing Association (AIBA) - the maximum penalty - for his outburst in the wake of last August's controversial Rio Games loss to Vladimir Nikitin.
Conlan was defeated by the Russian in their bantamweight quarter-final bout after appearing to largely dominate the fight.
It prompted a furious response from the Belfast man, who let loose in a post-fight interview with RTÉ.
"I was here to win Olympic gold, my dream’s been shattered now," he said.
"But you know what, I’ve a big career ahead of me and these ones, they’re known for being cheats and they’ll always be cheats.
"Amateur boxing stinks from the core to the top."
Conlan turned pro after the Games, vowing to become “Ireland’s greatest ever fighter”.
He signed his first pro deal with Top Rank, and will fight his first bout in the paid ranks on St Patrick’s Day in New York’s iconic Madison Square Garden.
Read, watch and listen to the sporting highlights of the last 12 months in '2016 A Year in Sport'