How does the iota transaction validation works? When a new transaction is added to the tangle the node adding it is supposed to validate two tips. Is the node suppose to make sure that those tip transactions have indeed the funds they are spending and that they are not double spending them? If that is the case does the node need to check the whole tangle? Is the node also suppose to validate the other transactions down the line(transactions validated by the tips and so on)? In a Blockchain it is relatively easy to understand how transactions are validated but in a tangle it looks very confusing...


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