Intro to Data Analysis Workflows in Python with Pandas
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A blockchain, originally block chain, is a growing list of records, called blocks, that are linked using cryptography. Each block contains a cryptographic hash of the previous block, a timestamp, and transaction data (generally represented as a Merkle tree). By design, a blockchain is resistant to modification of its data. This is because once recorded, the data in any given block cannot be altered retroactively without alteration of all subsequent blocks.
Blockchain is most likely to appear on Data Architect job descriptions where we found it mentioned 1.4 percent of the time.