I am consuming services of freelancers. They provide me presentations and narration audios, which I re-use in online courses that I sell over learning platforms. There is clear understanding with the freelancers that I have absolute rights on the work products that they provide me. This is communicated via messaging only.
Should I make it documented, if so how should I do it. Freelancers can be from anywhere in the world.
what can be the format for such agreement?
A signed scanned copy will serve the purpose?
Thanks in advance,