You're reading from Blockchain Quick Reference

Product typeBook

Published inAug 2018

Reading LevelIntermediate

PublisherPackt

ISBN-139781788995788

Edition1st Edition

Languages

Solidity

Tools

Ethereum

Concepts

Blockchain

Authors (4):

Mariko Amekodommo

Brenn Hill

Samanyu Chopra

Paul Valencourt

View More author details

The chain between blocks

In addition to the transaction ledger, each block typically contains some additional metadata. The metadata includes the following:

A reference to the prior block
Metadata about the network
The Merkle root of the transactions, which acts as a check of the validity of the block

These basics tend to be common for all blockchains. Ethereum, Bitcoin, Litecoin, and others use this common pattern, and this pattern is what makes it a chain. Each chain also tends to include other metadata that is specific to that ecosystem, and those differences will be discussed in future chapters. Here is an example from the Bitcoin blockchain:

By Satoshi Nakamoto: http://Bitcoin.org/Bitcoin.pdf, MIT, https://commons.wikimedia.org/w/index.php?curid=24542868

If you are asking, What is a Merkle root?, that brings us to our next set of key concepts: hashing and signature.

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Blockchain Quick Reference

Published in: Aug 2018Publisher: PacktISBN-13: 9781788995788

Authors (4)

Mariko Amekodommo

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