Yes, it is possible to track a private coin or cryptocurrency. However, the level of tracking may vary depending on the specific coin or cryptocurrency. For example, some cryptocurrencies are fully transparent and use public ledgers, which makes it relatively easy to track transactions. Other cryptocurrencies, such as privacy coins, use more advanced privacy protocols to obscure transactions and make them harder to track. In this case, it may be difficult to track the transactions of a private coin or cryptocurrency. Various tools and services are sued to track transactions on the blockchain.