Beatdown Promotions is an Australian MMA promotion tied publicly to Damien Brown, who has been identified in interviews and promotional material as the driving force behind the brand. The promotion presents itself as a North Brisbane and Queensland-centric platform for Australian MMA, with a stated aim of helping athletes build toward the world stage. Its focus is straightforward regional MMA matchmaking rather than a multi-discipline combat model. I could verify Brown’s operational role, but I did not find enough high-quality public sourcing to pin down an exact founding date with the level of confidence you asked for.