April 2017
Intermediate to advanced
266 pages
7h 4m
English
Content preview from Building Blockchain Projects
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What is blockchain?
A blockchain is a data structure used to create a decentralized ledger. A blockchain is composed of blocks in a serialized manner. A block contains a set of transactions, a hash of the previous block, timestamp (indicating when the block was created), block reward, block number, and so on. Every block contains a hash of the previous block, thus creating a chain of blocks linked with each other. Every node in the network holds a copy of the blockchain.
Proof-of-work, proof-of-stake, and so on are various consensus protocols used to keep the blockchain secure. Depending on the consensus protocol, the blocks are created and added to the blockchain differently. In proof-of-work, blocks are created by a procedure called mining, ...
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