Is there any proof of Karma theory & rebirth? Non Abrahmic religions like Jainism, Buddhism, Hinduism &amp; Sikhism believe in Karma theory &amp; rebirth. 
 
I'm interested in knowing the proofs of Karma theory &amp; rebirth presented by Buddhism.
Buddhism differs from others in that rebirth is not a transmigration of a Soul, nor of any specific entity. It is more of a statement that perceived experience being subject to conditions - finding itself empty of any and all self referential properties - cannot logically be seen to either have a concrete beginning nor a concrete ending, whilst the conditions for the arising of said experience are present.

When the notion of an Essential, Independent and Unchanging Atman/Soul is taken at its word, then at birth and death, that Soul must either appear from somewhere, or disappear somewhere, respectively, as Essentialist religions infer. 

The Buddha's aim was to show that what is directly perceived - impermanence and non-self - does not allow for termination of the conditioned (as that would be a process with a permanent conclusion), nor does it allow for some unconditioned and unexperiancable entity flirting off to invade somewhere else, as that is not directly perceivable by entities that depend on conditions for their perception.. 

The point is that there is no duality of 'cessation of the conditional'+'non-cessation of the non-conditional'. There is simply the continuation of conditionality. Ending the process of rebirth is the act of removing whatever conditions make up the necessary support for some conditionally-defined object: there is no 'rebirth' for my desire to drink, because I have removed the necessary conditions for this conditioned entity called 'me' to lunge for booze - the condition removed is craving for beer. This craving is removed volitionaly - volition being the arbiter of Kamma and its fruit: empty of volition? Empty of Kamma and hence empty of rebirth. 

(I will be the first to say that this logic works a lot easier for 'beer' than for the entity labeled 'me'. But there is no concrete dividing line between the two concepts - as for any two concepts - given that true Independence is not possible within conditionality, so the beer example should be a decent starting point!)