November 2018
Intermediate to advanced
528 pages
13h 21m
English
Content preview from Blockchain By Example
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What is blockchain?
Often confused with bitcoin, blockchain is the underlying technology used by bitcoin to operate. Concretely, it's an append-only and chronologically (timestamped) growing database, which harnesses basic cryptographic measures to protect stored transactions from being tampered with (in other words, data can't be deleted or altered).
This database, or ledger, collects and records monetary transactions validated by the network in elementary units called blocks. Once validated by the network consensus mechanism, these blocks are added to an existing sequential chain of cryptographic hash-linked blocks, to ensure the integrity of the data—hence the name blockchain.
If a single bit changes in one of the linked blocks, the hash-link ...
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