Python:
math.ceil(6000 / (math.sqrt(2) * 300)) ** 2
# output = 225
The map is 6000x6000 units (let's say meters).
Let's assume streamed-in zone has radius of 300 meters (meaning the square streamed-in zone is
sqrt(2) multiplied by 300 so 424x424 meters).
So you could spawn 225 bots covering the whole map, each bot would send the information to the server hosted by you, the server would send all this info to you.
Imagine this on a server with a typical average of 50 players online xD
You could make the bots move, or teleport as mentioned by user88, this way you'd need less bots but still, not worth the hassle in my opinion