Blockchain and Cryptocurrencies
Blockchain and Cryptocurrencies Blockchain: A blockchain is a decentralized and distributed ledger that records transactions across a network of computers. It consists of a chain of blocks, each containing a list of transactions. Transactions are grouped into blocks through a process called mining, where participants in the network solve complex mathematical problems to add a new block to the chain. Once a block is added, it is cryptographically linked to the previous block, forming a secure and transparent chain of transactions. Blockchain technology provides a tamper-resistant and transparent record of transactions, eliminating the need for a central authority to validate and authenticate transactions. Cryptocurrencies: Cryptocurrencies are digital or virtual currencies that use cryptography for security and operate on decentralized networks, often based on blockchain technology. Bitcoin, created in 2009 by an unknown person or group using th