A Little Help Please—Am I Being Scammed?

The initial contact was followed up with another email detailing the legal specifics about granting Facebook the right to use the video in addition to an offer of $1000 for its use. (Page 1 and page 2.) In a follow-up correspondence, he stated that all they needed from me to proceed was a digital file of the video which they now have. I was told that I'd be contacted by another person who would arrange for me to be paid.
I received an email today from the person responsible for making the payment to me. One of the things he's asking for is a filled-out W9 form for the IRS and I assume I would obviously need to provide my SSN. Maybe this is how it has to be but I'm a little concerned about giving out this information. I did a search for Kapsized, Inc. and all I could come up with is this link to two videos they've produced.
I dunno. It seems legit but it could also be a scam. Thoughts? Please share them here or on Facebook. Thanks!
Comments
I'd never give out my SS# even though it's already been compromised by an IRS scam.
We sell our art here in town but never end up paying taxes as the individual amounts received don't ever reach that threshold.
For me it's just as fun to see my work being use.
I have no doubts that our SSN have already been compromised many times over. Still, it's a tough call.