A transaction is a signed data package to transfer ether from an account to another account or to a contract, invoke methods of a contract, or deploy a new contract. A transaction is signed using ECDSA (Elliptic Curve Digital Signature Algorithm), which is a digital signature algorithm based on ECC. A transaction contains the recipient of the message, a signature identifying the sender and proving their intention, the amount of ether to transfer, the maximum number of computational steps the transaction execution is allowed to take (called the gas limit), and the cost the sender of the transaction is willing to pay for each computational step (called the gas price). If the transaction's intention is to invoke a method of a contract, it also contains input data, or if its intention is to deploy a contract, then it can contain the initialization code. The product of gas used and gas price is called transaction fees. To send ether or to execute a contract method, you need to broadcast...
Building Blockchain Projects
By :
Building Blockchain Projects
By:
Overview of this book
Blockchain is a decentralized ledger that maintains a continuously growing list of data records that are secured from tampering and revision. Every user is allowed to connect
to the network, send new transactions to it, verify transactions, and create new blocks,
making it permission-less.
This book will teach you what blockchain is, how it maintains data integrity, and how to create real-world blockchain projects using Ethereum. With interesting real-world
projects, you will learn how to write smart contracts which run exactly as programmed
without any chance of fraud, censorship, or third-party interference, and build end-to-e
applications for blockchain.
You will learn about concepts such as cryptography in cryptocurrencies, ether security, mining, smart contracts, solidity, and more. You will also learn about web sockets, various API services for Ethereum, and much more.
The blockchain is the main technical innovation of bitcoin, where it serves as the public ledger for bitcoin transactions.
Related Content you might be interested in
Current Title:
Building Blockchain Projects
Table of Contents (16 chapters)
Title Page
Credits
About the Author
About the Reviewers
www.PacktPub.com
Customer Feedback
Preface
Free Chapter
Understanding Decentralized Applications
Understanding How Ethereum Works
Writing Smart Contracts
Getting Started with web3.js
Building a Wallet Service
Building a Smart Contract Deployment Platform
Building a Betting App
Building Enterprise Level Smart Contracts
Building a Consortium Blockchain
Customer Reviews