Everyone thanks for your replies -- actually I didn't expect that many!

Jonathan, cthoman -- yes, from my previous dealings with copyright transfers I know that "work for hire" or "transfer in writing" with accompanying "monetary exchange" are the key ingredients. I was more interested in microstock specifics -- perhaps the industry has an its own established traditions of copyright transfers, and I'd like learn more about them.

Helix, Arena, cthoman -- I know that microstock economy is harsh, and the margins are thin, but I'm willing to give it a try. As they say, "you miss 100% of the shots you don't take".

Leaf -- thanks for the links! The Lookstat offer on keywording, uploading and tracking sounds very interesting. The fact that they're based in Seattle means that they have no shortage of competent native English speakers for keywording, but on the other hand, the same fact means that their pricing is likely not cheap compared to offshore outsourcing options. Unfortunately, their website has no info on pricing, so I guess I'll have to contact them.

Hi everyone!

I'm considering producing a relatively large batch of stock imagery (mostly illustration and 3D) on several selected subjects I'm familiar with. I'd like to outsource the grunt work to freelancers, while producing reference artwork and AI / MAX files myself.

My question is, do microstock agencies accept stock imagery produced this way? What kind of proof should I be able to provide to microstock sites to prove that I can legally sell such stock? Documents, contracts, links to posted projects on freelance sites etc.?

Thank you!
GStocker.

P.S. I'm new here at MicrostockGroup, so I apologize in advance if I used the wrong forum. If there were prior discussions on this, or if there's a dedicated forum for such questions, I'd be grateful if someone pointed me there.