August 2018
Intermediate to advanced
90 pages
1h 57m
English
Content preview from Hands-On Bitcoin Programming with Python
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What is a blockchain?
In simple terms, a blockchain is a digital ledger. It's a public record of bitcoin transactions arranged in chronological order. It is a permissionless, distributed database based on the bitcoin protocol that maintains a continuously growing list of transactional data records. It is distributed so that each participant has the copy of the whole blockchain. The blockchain is shared between all bitcoin users.
It is used to verify the permanence of bitcoin transactions and to prevent double spending. It is secure and immutable, and it's also hardened against tampering and revision, even by operators of the data store's nodes.
Each blockchain record is enforced cryptographically, and hosts run machines working as data store ...
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