A blockchain is essentially a digital ledger of transactions that is duplicated and distributed across the entire network of computer systems on the blockchain.

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Blockchain technology enables a decentralized peer-to-peer network for organizations or apps like Airbnb and Uber.

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It allows people to pay for things like toll fees, parking, etc. Blockchain technology can be used as a secure platform for the healthcare industry for the purposes of storing sensitive patient data.

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Blockchain is a system of recording information in a way that makes it difficult or impossible to change, hack, or cheat the system.

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Blockchain is a combination of three leading technologies: 1. Cryptographic keys 2. A peer-to-peer network containing a shared ledger 3. A means of computing, to store the transactions and records of the network

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Private blockchains operate on closed networks, and tend to work well for private businesses and organizations. Companies can use private blockchains to customize their accessibility and authorization preferences

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Bitcoin and other cryptocurrencies originated from public blockchains, which also played a role in popularizing distributed ledger technology

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Blockchain technology uses hashing and encryption to secure the data, relying mainly on the SHA256 algorithm to secure the information.

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