You can track your cryptocurrency transactions by using a blockchain wallet. This is a program or web service that stores the private and public keys needed to conduct transactions on the blockchain. It also displays a record of all your transactions, as well as your current balance. Additionally, there are several online tracking services available that allow you to view your transaction history. You can also use a portfolio tracker such as Blockfolio or Blox to monitor your holdings across different exchanges. Finally, it’s important to make sure you always backup your wallet with secure passwords, in case you happen to lose your device or forget your encryption key.