I don't believe it's possible to copyright node setups unless they are ridiculously complex, and that's a big maybe. bb used to post stuff he made with MatMatic which had highly convoluted node setups, as they were built automatically by scripting - a case could be made for copyright in that scenario as it is vanishingly unlikely that someone else could come up with the same setup independently.

For the rest though, as everyone is using the same built-in nodes it is very likely that different people would come to the same setups for same materials, so copyright would not be possible.

So I would say that EldritchCellar is right ... but I'm no expert ;)

----------------------------------------

Not approved by Scarfolk Council. For more information please reread. Or visit my local shop.