Bitcoin Q&A: What is the Role of Nodes?
Channel: aantonop
Date: 2017-05-08

The role that full nodes play in security of the network. People focus a lot on mining, which has a fundamental role in the network but is not necessarily the most interesting feature of the constellation of technologies involved. The Border Gateway Protocol (BGP) is the most essential protocol underlying the world's routing system, and you use it every single day without knowing it, just as you are oblivious to the vast filtration system allowing you to drink clean water from a fountain. A node is a computer that is participating the global peer-to-peer Bitcoin network. They propagate transactions and blocks everywhere. Full nodes act independently as authoritative verifiers. Onion routing. Double-spending protection. Levels of isolation for untrustworthy nodes. Why would you run one? To be in control of your money - your keys, your money. You don't trust anyone else to tell you what the truth is, you cross-check every claim yourself. Be part of the revolution in money.

Chapters
0:00 Can you explain about the role that nodes play in the protocol?
2:16 What is a node?
3:35 Fully validating node
5:19 A node that tries to propagate incorrect information is isolated
5:44 Why would you run a node?
6:33 Nodes decide what the rules are, not the miners

This is part of a talk which took place at the JW Marriott Sahar (International Airport) on March 26th 2017 in Mumbai, India: https://www.townscript.com/e/bitcoin-talk-by-the-world-famous-andreas-antonopoulos-203132

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Innovations in wallet design - https://youtu.be/K5Ei3_D8LQ8
How to get people to care about security - https://youtu.be/Ji1lS9NMz1E

Andreas M. Antonopoulos is a technologist and serial entrepreneur who has become one of the most well-known and well-respected figures in bitcoin.

Follow on Twitter: @aantonop https://twitter.com/aantonop
Website: https://antonopoulos.com/

He is the author of two books: “Mastering Bitcoin,” published by O’Reilly Media and considered the best technical guide to bitcoin; “The Internet of Money,” a book about why bitcoin matters.

THE INTERNET OF MONEY, v1: https://www.amazon.co.uk/Internet-Money-collection-Andreas-Antonopoulos/dp/1537000454/ref=asap_bc?ie=UTF8

MASTERING BITCOIN: https://www.amazon.co.uk/Mastering-Bitcoin-Unlocking-Digital-Cryptocurrencies/dp/1449374042

[NEW] MASTERING BITCOIN, 2nd Edition: https://www.amazon.com/Mastering-Bitcoin-Programming-Open-Blockchain/dp/1491954388

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