Blockchain Technology Overview
It is an introductory overview for readers seeking to understand blockchain technology, not a research contribution.
This document provides a high-level technical overview of blockchain technology, explaining how it works as a tamper-evident and tamper-resistant distributed digital ledger without a central authority.
Blockchains are tamper evident and tamper resistant digital ledgers implemented in a distributed fashion (i.e., without a central repository) and usually without a central authority (i.e., a bank, company, or government). At their basic level, they enable a community of users to record transactions in a shared ledger within that community, such that under normal operation of the blockchain network no transaction can be changed once published. This document provides a high-level technical overview of blockchain technology. The purpose is to help readers understand how blockchain technology works.