Zcoin stores its blockchain data on a device known as a Ledger Nano S. This device is similar to a USB drive and allows Zcoin users to keep their private keys offline and secure. The Ledger Nano S can be purchased from the Zcoin website or from any major online retailer.
Other related questions:
Q: Where is the blockchain data stored?
A: The blockchain data is stored on the blockchain itself.
Q: How is data stored in a ledger?
A: In a ledger, data is stored in a sequence of blocks. Each block contains a timestamp and a link to the previous block.