Remy Ma is currently facing up to a year in prison, for allegedly punching her Love & Hip Hop rival, reality star Brittney Taylor.

But Remy is now claiming to have evidence that she didn't do it.

According to Remy's lawyer, they have video evidence that show that Remy was NOT at the scene of the assault, New York's Irving Plaza.  

And Remy's lawyer is also saying that they have video evidence that shows that Brittney may have given herself the black eye.

Brittney filed a police report against Remy Ma, claiming that Remy attacked her. She also plans on filing a civil lawsuit against the female rapper.

Here's What TMZ is reporting:

The rapper's attorney, Dawn Florio, tells TMZ ... Remy has security cameras installed in her house that show she was there at 9:30 PM on April 16 -- the same time "Love & Hip Hop: New York" star Brittney Taylor claims Remy punched her backstage during a concert at NYC's Irving Plaza.

We already knew this, but according to Florio ... prosecutors were "dumbfounded" in court this week when Remy's side claimed to have evidence to support she was nowhere near the spot of the alleged assault.

Remy's lawyer's confident once they review the home security footage, Taylor's case will be destroyed and Remy will be cleared.

There's more -- Florio insists there's NO surveillance footage from Irving Plaza that backs Taylor's claim she was assaulted in the green room area ... AND Florio says she's obtained a photo from the night of the alleged assault timestamped hours afterward that shows Brittney with no visible marks on her face.

Remy Ma is currently on parole, after serving 5 years for shooting a woman in the stomach. If convicted on this latest crime, she faces another year in prison.