NIST IR 8202 Blockchain Technology Overview (Oct 2018)
▻https://nvlpubs.nist.gov/nistpubs/ir/2018/NIST.IR.8202.pdf
Abstract
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.