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A blockchain, originally blockchain, is a growing list of records, called blocks, linked using cryptography. Each block contains a cryptographic hash of the previous block, a timestamp, and transaction data. By design, a blockchain is resistant to modification of the data.
How does blockchain work? It works with Blocks, where a spreadsheet works with “rows” and “columns.” A block in a blockchain is a collection of data. Blockchain is a distributed ledger, which means that a ledger is spread across the network among all peers in the network, and each peer holds a copy of the complete ledger.
Blockchain is a global online database that anyone with an internet connection can use, but it doesn’t belong to anyone. CNBC’s Tom Chitty explains. If you’ve heard of bitcoin, you’ve probably also heard of the technology underlying it: The blockchain. A blockchain is a global online database that anyone with […]
By using math and cryptography, Blockchain is challenging the status quo in a radical way. Will governments and financial institutions embrace it?