Blockchain is a decentralized digital ledger that records transactions across many computers so that the record cannot be altered retroactively without the alteration of all subsequent blocks and the consensus of the network. This technology underpins cryptocurrencies like Bitcoin and has applications in numerous fields such as finance, supply chain management, and healthcare, due to its transparency, security, and resistance to fraud. For a more comprehensive understanding of blockchain technology and its potential impacts, consider this detailed guide: https://paybis.com/blog/glossary/what-is-blockchain/. It explores the fundamental concepts of blockchain and its transformative potential.