video thumbnail 26:20
But how does bitcoin actually work?

2017-07-07

[public] 9.8M views, 364K likes, 3.10K dislikes audio only

channel thumb3Blue1Brown

The math behind cryptocurrencies.

Help fund future projects: https://www.patreon.com/3blue1brown

An equally valuable form of support is to simply share some of the videos.

Special thanks to these supporters: http://3b1b.co/btc-thanks

This video was also funded with help from Protocol Labs: https://protocol.ai/join/

Some people have asked if this channel accepts contributions in cryptocurrency form. As a matter of fact, it does:

http://3b1b.co/crypto

ENS: 3b1b.eth

2^256 video: /youtube/video/S9JGmA5_unY

Music by Vincent Rubinetti: https://soundcloud.com/vincerubinetti/heartbeat

Here are a few other resources I'd recommend:

Original Bitcoin paper: https://bitcoin.org/bitcoin.pdf

Block explorer: https://blockexplorer.com/

Blog post by Michael Nielsen: https://goo.gl/BW1RV3

(This is particularly good for understanding the details of what transactions look like, which is something this video did not cover)

Video by CuriousInventor: https://youtu.be/Lx9zgZCMqXE

Video by Anders Brownworth: https://youtu.be/_160oMzblY8

Ethereum white paper: https://goo.gl/XXZddT

Timestamps:

0:00 - Introduction

2:25 - Ledgers and digital signatures

7:21 - The ledger is the currency

10:06 - Decentralization

12:26 - Cryptographic hash functions

14:38 - Proof of work and blockchains

19:42 - Double spending

21:41 - Block times, halvenings, and transaction fees

24:40 - Thanks

Thanks to these viewers for their contributions to translations

Italian: @lcl45

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Animations are largely made using manim, a scrappy open-source python library. https://github.com/3b1b/manim

If you want to check it out, I feel compelled to warn you that it's not the most well-documented tool, and has many other quirks you might expect in a library someone wrote with only their own use in mind.

Music by Vincent Rubinetti.

Download the music on Bandcamp:

https://vincerubinetti.bandcamp.com/album/the-music-of-3blue1brown

Stream the music on Spotify:

https://open.spotify.com/album/1dVyjwS8FBqXhRunaG5W5u

If you want to contribute translated subtitles or to help review those that have already been made by others and need approval, you can click the gear icon in the video and go to subtitles/cc, then "add subtitles/cc". I really appreciate those who do this, as it helps make the lessons accessible to more people.

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3blue1brown is a channel about animating math, in all senses of the word animate. And you know the drill with YouTube, if you want to stay posted on new videos, subscribe, and click the bell to receive notifications (if you're into that).

If you are new to this channel and want to see more, a good place to start is this playlist: http://3b1b.co/recommended

Various social media stuffs:

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How secure is 256 bit security? by 3Blue1Brown
/youtube/video/S9JGmA5_unY
Patreon Support on patreon
http://patreon.com/3blue1brown
Protocol Labs Check out protocol labs
http://www.3blue1brown.com/protocollabs
Introduction
/youtube/video/bBC-nXj3Ng4?t=0
Ledgers and digital signatures
/youtube/video/bBC-nXj3Ng4?t=145
The ledger is the currency
/youtube/video/bBC-nXj3Ng4?t=441
Decentralization
/youtube/video/bBC-nXj3Ng4?t=606
Cryptographic hash functions
/youtube/video/bBC-nXj3Ng4?t=746
Proof of work and blockchains
/youtube/video/bBC-nXj3Ng4?t=878
Double spending
/youtube/video/bBC-nXj3Ng4?t=1182
Block times, halvenings, and transaction fees
/youtube/video/bBC-nXj3Ng4?t=1301
Thanks
/youtube/video/bBC-nXj3Ng4?t=1480
3Blue1Brown 3Blue1Brown, by Grant Sanderson, is some combination of math and entertainment, depending on your disposition. The goal is for explanations to be driven by animations and for difficult problems to be made simple with changes in perspective. For more information, other projects, FAQs, and inquiries see the website: https://www.3blue1brown.com
/youtube/channel/UCYO_jab_esuFRV4b17AJtAw
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How secure is 256 bit security? 2,727,439 views
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Support on patreon patreon.com
https://www.patreon.com/3blue1brown