The Blockchain & Bitcoin - Computerphile
277,866
Published 2017-03-24
Note1 - At 6:46 when Chris is drawing the Merkle Tree, C would actually be duplicated and hashed with itself not with B. So you would get H(C - C) instead of H(B - C).
Note2 - At minute 17, Christopher mentioned the mining reward halving at 21,000 bitcoins but meant 210,000 blocks.
Public Key Encryption: • Public Key Cryptography - Computerphile
The Perfect Code: • The Perfect Code - Computerphile
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This video was filmed and edited by Sean Riley.
Computer Science at the University of Nottingham: bit.ly/nottscomputer
Computerphile is a sister project to Brady Haran's Numberphile. More at www.bradyharan.com/
All Comments (21)
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This is the best block chain 101 video I've seen. Most often people explaining it don't sound like they understand what they're endeavoring to describe.
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Best, most technically understandable explanation of the blockchain that I have ever heard.
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I salute a fellow stereotypical nerd
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This guy is brilliant. Finally someone who explained so clear with good enough knowledge but accessible for anyone who is not in the world of cryptocurrency and blockchain technologies.
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He looks so nervous I want to give him a hug. Perfectly explained though
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It's interesting that the people criticising this guy's pronunciation can't post simple comment using correct spelling and grammar. Great video. I learned more in five minutes of this description than in a couple of hours worth of other videos.
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I feel this would have been easier to understand if they had gone over version control system before this
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This video actually explained it to me. thank you. many podcasts and blogs have failed, but the whole public private key explanation made it click! thanks
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This is the hardest Computerphile video to watch while eating cereal
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Out of all the vague explanations about blockchains and cryptocurrencies available out there.. this is the best I have seen and most technically explained, and in a very short time.
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Thanks for /finally/ taking the time to make a in-depth video about Bitcoin/Blockchain on Computerphile!
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I have seen multiple simplified explanations of bit coins, the block chain and, mining and never understood it. Thank you Computerphile!
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His shirt is killing the antialias when you play it in a small window
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The block reward is halved every 210,000 blocks (about 4 years), not every 21,000 bitcoins.
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I already understood the components of this, but a clear brain-to-mouth presentation made it make sense (fully-ish). Thanks.
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This is by far the best explanation of the system that I have heard yet. The ending of the video was rather sobering however. An hour or more to have a verified transaction is way too long for much of the world's trading, especially when we still have to pay a fee for the transaction.
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OMG hadn't seen dot matrix paper in more than 15 years, nearly cried :)
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for anyone interesed in learning more about bitcoin the princeton course available in youtube is very well done
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11:23 - Basically, if you mine a block but it ends up on the shorter chain, then you lose your block reward!
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Each block is 12.5 Bitcoins right now, not 6.
