At this point they aren't entering home submissions - if you have a Rygar PCB, you can submit it to Twin Galaxies however, but you have to match the settings they require...so when you record your run and you happen to break the world record you will at the end have to show the board and the dip switch settings to the camera so it's undisputed.

I used to be able to post live stream scores on Aurcade, but not any more.

As for official Aurcade scores either me or a person with my credentials would need to be standing next to you to visually verify the score.

Once upon a time though, there was a section under your profile marked "Personal Scores" where users could submit their own unofficial scores of games.  There was a disclaimer associated with that though saying that scores posted there were based on the opinion of the gamer and not officially recognized.  They also don't take into account possible settings differences.  But it certainly made it a lot easier for a gamer to say they got a certain score.  Don't know if it ever got off the ground though as I could certainly claim that I scored 43,000,000 on Revolution X, but this was before I joined Aurcade and I have no evidence of it.