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The Blockchain & Bitcoin – Computerphile



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: https://youtu.be/GSIDS_lvRv4
The Perfect Code: https://youtu.be/WPoQfKQlOjg

http://www.facebook.com/computerphile

This video was filmed and edited by Sean Riley.

Computer Science at the University of Nottingham: http://bit.ly/nottscomputer

Computerphile is a sister project to Brady Haran’s Numberphile. More at http://www.bradyharan.com

source

Giới thiệuThúy Navi

Thúy Navi 26 tuổi đam mê du lịch, công nghệ,đang sống và làm việc tại Hà Nội. Founder,Blogger tại Website: http://www.internetviettelnhatrang.com/

38 Bình luận

  1. what I dont get is cant people just type out paragraphs or words and then figure out the hash to them? They have hashing online where you jus type something into it and it shows you the hash. I mean there the same every time right? I know one little difference changes the hash but what if you happen to type the exact same word or sentence ?

  2. You know this will come to all know knowledge to "protects data" which dont need to be "protected" since we have manual libraries but I guess the main goal for these people" would be the "burning" of manual libraries eg. destroing manual data -I can see it in this future and I guess the main force would be poiticians and thier holy cow commersialism plus dictarorship and countries with where a careless peron takes power just because he can -much like a psyco

  3. Analysts think Ethereum would explode higher in the weeks ahead as it passes key resistance levels in the high-$400s and enters the $500s. Ethereum is set to move toward the resistances in the $600 range as charts shows $600 is where the next weekly resistance on the macro chart lies, bitcoin also is Surging and has been on a steady increase also. There's no better time to accumulate and stack up because soon enough the price of bitcoin will sky rocket to the moon, there are two approach to increasing your portfolio as an investor first is by buying little bits of crypto periodically (DCA) and the second which is a preferred and a better option is trading because it is less capital intensive and more profitable. I trade daily with trade signals from Ethan McKenzie and I have increased my portfolio from 2 btc to 9 btc in the space of seven weeks. I can attest to the accuracy of his trade signals and he can be reached through WhatsApp (44 7723 042647) and Telegram (ethanmckenzie) for any trader looking to stay profitable.

  4. Just discovered this video, I'm based in the US and about ready to buy my first few bitcoins…I opened an acct on Coinbase but inly able to buy $1k per day from my checking acct, I do have more than $30k in my checking acct, can anyone recommend a SAFE, secured platform that offers customer support (Coinbase doesn't really do that) for Bitcoin investing/trading? Thanks!

  5. Great video here mate. I, speaking for myself still stick to my path which has turned out to be very profitable. It’s cool to hodl but what is even cooler is trading using a well established pattern and this I do using Michael’s signals which has helped me become a better trader and also helped me trade with about 2 BTC to over 5 in just a fortnight. His signals are that accurate and he can be contacted on WhatsApp (+16054677734) or Telegram (@michaeltrading247) for all sort of crypto related assistance.

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