Can some briefly explain how Dash's instant transaction work?
Does the receiver get the "same" Dash that are sent? Or does someone else give the receiver "other" Dash from "somewhere else"? Or do they get a credit awaiting confirmation?
The simple explanation, you pass someone a dollar bill, and the receiver gets that note.
The quick and easy way to explain it In Dash: you make an InstantSend transaction, the masternodes lock in the transaction, and it gets a number of confirmations to prevent double spending. The receiver get the coins put in to their address and by the next block the miners reconfirm the transaction and it gets written to the blockchain.