Blockchain and distributed ledger technology (DLT) are often used interchangeably, but there is a subtle difference between the two. Blockchain is a specific type of DLT that is characterized by its decentralized, secure, and transparent nature. It uses cryptography to ensure the immutability of the ledger and allows for secure, peer-to-peer transactions without the need for a central authority. DLT, on the other hand, refers to any technology that uses a distributed ledger to record transactions and share data across a network. While blockchain is one type of DLT, there are other types of DLT that may not use the same secure, decentralized methods as blockchain. In short, blockchain is a specific implementation of DLT.

Blockchain is a type of distributed ledger technology (DLT) that records transactions across a network of computers in a secure, decentralized, and transparent manner. In blockchain, data is stored in "blocks" linked chronologically, forming a chain. Each block contains a set of transactions, and once recorded, it is nearly impossible to alter without consensus from the network, ensuring security.

DLT refers to a broader concept where a distributed network maintains a shared, synchronized ledger. Blockchain is just one form of DLT, known for its use in cryptocurrencies like Bitcoin.

Both technologies eliminate the need for intermediaries, reducing costs and increasing efficiency in various sectors, including finance, supply chains, and healthcare. DLT also enhances transparency, traceability, and fraud prevention in digital transactions.