But, what if an orphaned block is not left orphaned and other miners work on it again to eventually get chosen more? It is highly unlikely that the orphaned chain will out run the current longest chain to take the position as the main chain, but it is still possible. If the main chain is changed, the related transaction history will disappear. If you receive cryptocurrency from someone, and the transaction history you received disappears due to a change in the main chain, the received cryptocurrency will also disappear.