The math behind cryptocurrencies.
Help fund future projects: https://www.patreon.com/3blue1brown
An equally valuable form of support is simply sharing some 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. Actually it does:
http://3b1b.co/crypto
ENS: 3b1b.eth

2^256 video: https://youtu.be/S9JGmA5_unY

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

Here are a few other resources I would 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 especially good for understanding the details of what transactions look like, something this video doesn't 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 spend
21:41 – Block times, halvings and transaction costs
24:40 – Thanks

Thanks to these viewers for their contributions to translations
Italian: @lcl45

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Animations are largely created using manim, a messy open-source Python library. https://github.com/3b1b/manim

If you want to check it out, I feel compelled to warn you that it is not the best documented resource, and has many more quirks that you would expect to find in a library that 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 would like to contribute translated subtitles or help review subtitles that have already been created by others and need approval, you can click the gear icon in the video and go to subtitles/cc, then to /"add subtitles/cc /". I really appreciate those who do this as it helps make the classes accessible to more people.
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