The Blockchain & Bitcoin - Computerphile

Поділитися
Вставка
  • Опубліковано 23 бер 2017
  • Blockchain is the underlying technology behind cryptocurrencies bringing together Merkle trees, Hashing & Distributed Architecture. Christopher Ellis explains.
    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 Cryptograph...
    The Perfect Code: • The Perfect Code - Com...
    / computerphile
    / computer_phile
    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

КОМЕНТАРІ • 469

  • @Jasruler
    @Jasruler 3 роки тому +32

    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.

  • @AlexBerg1
    @AlexBerg1 7 років тому +251

    Best, most technically understandable explanation of the blockchain that I have ever heard.

  • @Taulussa
    @Taulussa 7 років тому +765

    I salute a fellow stereotypical nerd

  • @JohnnyThousand605
    @JohnnyThousand605 6 років тому +7

    It's interesting that the people criticising this guy's pronunciation can't post simple comment using correct spelling and grammar.

  • @BorjaTarraso
    @BorjaTarraso Рік тому +4

    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.

  • @pedrodevoto
    @pedrodevoto 7 років тому +98

    He looks so nervous I want to give him a hug. Perfectly explained though

  • @Theraot
    @Theraot 7 років тому +46

    I feel this would have been easier to understand if they had gone over version control system before this

  • @bigbossmatt
    @bigbossmatt 6 років тому +5

    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

  • @PixelPhobiac
    @PixelPhobiac 7 років тому +4

    Thanks for /finally/ taking the time to make a in-depth video about Bitcoin/Blockchain on Computerphile!

  • @Hslifelearner
    @Hslifelearner 6 років тому +1

    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.

  • @HisDivineShadow
    @HisDivineShadow 7 років тому +94

    Each block is 12.5 Bitcoins right now, not 6.

  • @madfury3179
    @madfury3179 7 років тому +11

    His shirt is killing the antialias when you play it in a small window

  • @ATB000ATB
    @ATB000ATB 7 років тому

    I have seen multiple simplified explanations of bit coins, the block chain and, mining and never understood it. Thank you Computerphile!

  • @MatthewHarrold
    @MatthewHarrold 7 років тому +1

    I already understood the components of this, but a clear brain-to-mouth presentation made it make sense (fully-ish). Thanks.

  • @nyx211
    @nyx211 7 років тому +6

    11:23

  • @vtatai
    @vtatai 7 років тому +13

    OMG hadn't seen dot matrix paper in more than 15 years, nearly cried :)

  • @nyx211
    @nyx211 7 років тому +44

    The block reward is halved every 210,000 blocks (about 4 years), not every 21,000 bitcoins.

  • @spacedd0006
    @spacedd0006 7 років тому +231

    Omg, you have no idea how useful this video is and how perfectly timed it is. I am applying for an apprenticeship at IBM and I researched Blockchain as it is one of their big things at the moment. This is exactly what I needed to learn further about it. THANK YOU!

  • @BobClemintime
    @BobClemintime 7 років тому +2

    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.

  • @BitcoinBitz
    @BitcoinBitz 7 років тому +1

    This guys is very good at explaining the system Good job!