A. A type of cryptocurrency - एक प्रकार की क्रिप्टोकरंसी
B. A distributed ledger on a peer to peer network - पीयर टू पीयर नेटवर्क पर एक वितरित लेज़र
C. A centralized ledger - एक केंद्रीकृत लेज़र
D. A Currency - एक मुद्रा
Blockchain is a type of distributed ledger technology that operates on a peer-to-peer network. In a blockchain network, multiple participants (nodes) are connected to each other, and each node has a copy of the entire ledger. This distributed nature of the ledger ensures that no single entity or central authority has control over the entire system.