how to tell if my 2001 toyota corolla engine is blown ?

From your brief description your timing belt may have broke and the pistons may have collided with the valves resulting in internal damage.
A timing belt should be replaced every 50 to 60.000 miles as a preventative maintenance item
 
made real loud noise then stopped would be a good sign but most likely wouldnt spin any more at all so not getting fire most likely timing chain or belt snap
 
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