What is blockchain technology?

Learn more about blockchain technology. Blockchain is a digital ledger database whose recorded contents are encrypted into a sequence of blocks and distributed throughout a network of participating computers (nodes). Blockchain is a distributed ledger database system whose technologies can change the way businesses and governments operate.

What is a blockchain node?

Nodes in public blockchain networks are referred to as miners; they're typically paid for this task -- often in processes called proof of work or proof of stake -- usually in the form of cryptocurrency. A blockchain ledger consists of two types of records, individual transactions and blocks.

What is a private blockchain network?

A private blockchain network, similar to a public blockchain network, is a decentralized peer-to-peer network. However, one organization governs the network, controlling who is allowed to participate, execute a consensus protocol and maintain the shared ledger.

What is IBM Blockchain for Dummies?

Now in its 3rd edition, IBM’s Blockchain for Dummies has introduced blockchain to more than 68,000 readers. Blockchain defined: Blockchain is a shared, immutable ledger that facilitates the process of recording transactions and tracking assets in a business network.