Here is a bit of code which should point you in the right direction. Problem could be the response limit, which is 200.
That's why you have to store the responses anywhere to get a full list of all artists (users) on SC.
To get a list of users you can do the following by using the SC JS SDK. May be you can play around with the q parameter.
JS Code:
SC.initialize({ client_id: "201b55a1a16e7c0a122d112590b32e4a"});
SC.get('/users', { limit: 200}, function(users) { console.log(users);});
Example here:
http://jsfiddle.net/iambnz/9kUwq/
Docs: