• Bitcoin - Transaction block chains

    The mechanics of a bitcoin transaction block chain, which is a construct that is generated by bitcoin miners and functions as a global ledger for recording and validating bitcoins. More free lessons at: http://www.khanacademy.org/video?v=QzDO44oZWtE Video by Zulfikar Ramzan. Zulfikar Ramzan is a world-leading expert in computer security and cryptography and is currently the Chief Scientist at Sourcefire. He received his Ph.D. in computer science from MIT.

    published: 02 May 2013
  • E675: Adam Ludwin CEO Chain on creating his tool for top financial firms to use blockchain; DAO hack

    Entrepreneurs are driving all of the innovation today, and this episode's guest is no exception. Adam Ludwin, CEO & Co-founder of Chain created a tool that's helping top financial firms (NASDAQ, CapitalOne, Citi, Fidelity, Visa & more) deploy the blockchain. Adam demos his technology, and offers a fascinating and super clear explanation of how/why bitcoin & the blockchain were developed, how it works, common misperceptions, how the DAO hack happened & long-term effects, and how he got that insanely amazing domain name. Jason and Adam venture deep into other tech & culture territory, including whither Apple, who will buy Twitter, Snapchat v. Instagram, religion, oppressed societies, Hamilton (The Musical), and the hardest part of a startup (hint: it's not the starting up). Click to tweet "...

    published: 20 Sep 2016
  • How the blockchain is changing money and business | Don Tapscott

    What is the blockchain? If you don't know, you should; if you do, chances are you still need some clarification on how it actually works. Don Tapscott is here to help, demystifying this world-changing, trust-building technology which, he says, represents nothing less than the second generation of the internet and holds the potential to transform money, business, government and society. TEDTalks is a daily video podcast of the best talks and performances from the TED Conference, where the world's leading thinkers and doers give the talk of their lives in 18 minutes (or less). Look for talks on Technology, Entertainment and Design -- plus science, business, global issues, the arts and much more. Find closed captions and translated subtitles in many languages at http://www.ted.com/translate ...

    published: 16 Sep 2016
  • How the blockchain will radically transform the economy | Bettina Warburg

    Say hello to the decentralized economy -- the blockchain is about to change everything. In this lucid explainer of the complex (and confusing) technology, Bettina Warburg describes how the blockchain will eliminate the need for centralized institutions like banks or governments to facilitate trade, evolving age-old models of commerce and finance into something far more interesting: a distributed, transparent, autonomous system for exchanging value. TEDTalks is a daily video podcast of the best talks and performances from the TED Conference, where the world's leading thinkers and doers give the talk of their lives in 18 minutes (or less). Look for talks on Technology, Entertainment and Design -- plus science, business, global issues, the arts and much more. Find closed captions and transla...

    published: 08 Dec 2016
  • How to Make Money with Bitcoin and the Blockchain

    I am receiving countless requests for information concerning how to get into BitCoin, how to make money off of mining and a constant need for more information. I am no expert so I would like to present someone that is. For more information on BitClub click below http://bitclub.network/koreyrowe1 This is Joby Weeks. “In the last two years my wife and I have visited 400+ cities and over 100+ countries. We basically fly around the world on private jets selling machines that print money. Would you like a machine that prints money?” Meet Joby and his wife Stephanie Weeks, entrepreneurs, investors, the front-line soldiers in a battle to change the way you spend and save your money. Except the money they want you to use is this NEW magical Internet money called Bitcoin! By now you have...

    published: 12 May 2017
  • Why the blocksize limit keeps Bitcoin free and decentralized

    The blocksize limit is what ensures everyone can participate in the Bitcoin network, and it ensures everyone can participate anonymously should they choose too. Some people want to remove this protection to make Bitcoin scale, but we can have the best of both worlds: high transaction volume and true decentralization with off-chain transactions. Learn more at http://keepbitcoinfree.org Anitmation produced by Stone Canoe (http://www.stonecanoe.ca)

    published: 16 May 2013
  • How To Transfer Bitcoin from Coinbase to Your Blockchain Wallet

    http://somethingverycool.com/how-to-transfer-bitcoin-from-coinbase-to-your-blockchain-wallet/ How To Transfer Bitcoin from Coinbase to Your Blockchain Wallet The popularity of bitcoin is gaining more and more, and Coinbase is a very popular and trusted website to initially purchase bitcoin. Once purchased many people like to move their bitcoins to their Blockchain wallet, one of the most secure wallets available. The first step is to generate a 'Receive' bitcoin address from your Blockchain wallet. Then once that is copied you simply paste the bitcoin address into the 'Send' field in Coinbase. Then enter the amount of bitcoin that you wish to transfer and enter a short description to remind you of the purpose of the transaction, i.e. moving bitcoin from Coinbase to Blockchain. And that...

    published: 14 Feb 2017
  • 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 https://twitter.com/computer_phile 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'...

    published: 24 Mar 2017
  • Introduction to Bitcoin, Blockchain and Decentralized Technology

    I'm excited to announce a new course available at pluralsight: https://app.pluralsight.com/library/courses/bitcoin-decentralized-technology?utm_source=youtube&utm_medium=video&utm_campaign=authordemo Outline Module 1: Bitcoin Concepts and Basic Use - Demo: buying a digital video online - What gives Bitcoin value? - Big Ideas: openness, privacy, decentralized, cryptocurrency, programmable - Basic structure: a collectively maintained ledger - Transactions: how money is sent in Bitcoin - Smart Contract example: crowdfunding - Getting Bitcoin: exchange, ATM, in person, pros / cons - Demo: buying Bitcoin on an exchange - Wallets: How to store and use Bitcoin, mobile, online, hardware, cold storage - Demo: using a hardware wallet - Bitcoin mining - Demo: accepting Bitcoin on a website with Bi...

    published: 21 Jun 2016
  • Blockchain Technology Explained: What is a Blockchain?

    This video https://youtu.be/eXJHPDs4M3Y provides an easy to understand introduction to Blockchain Technology. Please leave comments and questions below the video. Here is the full transcript for your convenience: What is a Blockchain? A Blockchain is a distributed database that multiple parties share and everyone can trust. A Blockchain network provides a mutually trusted, transparent way of sharing and transacting. Each party participating in a Blockchain network maintains their own copy of the database. What makes Blockchain secure? Transactions on the database are atomic (this means that they're processed one at a time). The next transaction will be a different write or a read, but only after the preceding transaction has completed (or failed). Each write to the database is consider...

    published: 12 Mar 2017
  • DIY Post Puller made with a chain hoist - remove metal or wood fence post w/o digging

    The beauty of this setup is that the entire post is usually able to clear the bottom of the hole, except in this case where I stopped it just shy of ground level. After many years of attempting to pull posts with levers and bottle jacks, I decided to build a portable solution for one man operation. Initially the tripod had a fixed top plate with 3 1" square tubes welded on with a large d-ring loop welded on for the chain hoist or come-along. At some point, I decided to shorten the entire apparatus and go with d-rings as a common top connector. This enables the legs to be articulated individually which can be useful in tight situations. This rig is constructed entirely with cold connections - a few holes to pin the d-ring shanks to the end of the poles. I have pulled up a double pos...

    published: 22 Jul 2015
  • Chain Hoist Disassembly for Maintenance - Oz Lifting Products

    Click http://goo.gl/ghrXG9 to learn more about the Chain Hoist. ABOUT: In this video you will learn how to re-assemble a chain hoist after maintenance. FEATURE and BENEFITS: Overload Protection - This is standard on all hoists and is factory set. The overload is integral with the hoist and prevents the operator from overloading the hoist. When activated, the overload will not allow hoist operation. When the overload is activated, lower the load, if lifting, or release the load, if pulling. Then select a larger capacity hoist, or consult a lifting specialist for another means of operation. Unique Hand Wheel Design - This feature enables the hand chain to successfully feed directly into the wheel sprocket from many directions and angles. Thus, the operator can use the hoist while standin...

    published: 11 Jun 2014
  • IBM and Maersk Demo: Cross-Border Supply Chain Solution on Blockchain

    Demo of how IBM and Maersk are digitizing and simplifying global trade to create trust and transparency in the supply chain using blockchain technology--a distributed, permissioned platform accessible by the supply chain ecosystem designed to exchange events data and handle document workflows. The example shows how shipping flowers can create trust and security in a digitized workflow while improving efficiencies of global supply chains. Learn about this solution: http://www-03.ibm.com/press/us/en/pressrelease/51712.wss Visit https://www.ibm.com/blockchain/

    published: 15 Mar 2017
  • De Uber voor de Verzekeringsbranche met smart contracts en block chain!

    De impact en mogelijkheden van sociale innovatie, peer-to-peer platforms en blockchain. Klik hier voor een eerder filmpje waar Justin het basis concept van de blockchain doorneemt : https://www.youtube.com/watch?v=f9oEE5Qf0Co Voor meer informatie : j.schlee@anva.nl of @justinschlee

    published: 03 Oct 2016
  • The Blockchain and Us (2017)

    A film by Manuel Stagars http://www.blockchain-documentary.com In 2008, Satoshi Nakamoto invented bitcoin and the blockchain. For the first time in history, his invention made it possible to send money around the globe without banks, governments or any other intermediaries. The concept of the blockchain isn’t very intuitive. But still, many people believe it is a game changer. Economist and filmmaker Manuel Stagars portrays this exciting technology in interviews with software developers, cryptologists, researchers, entrepreneurs, consultants, VCs, authors, politicians, and futurists from the United States, Canada, Switzerland, the UK, and Australia. The Blockchain and Us is no explainer video of the technology. It gives a view on the topic, makes it accessible and starts a conversation...

    published: 04 Apr 2017
  • Block Chain Land Registry & Burst Mining

    Burstcoin is at a penny which is super interesting as this is a cryptocurrency that can be mined on the extra space on your computer harddrive, check it out! https://www.youtube.com/c/GbonikzBits?sub_confirmation=1 Thank You for Watching! I really appreciate it, Please feel free to Like | Share | Comment | Subscribe | Hit The Bell | Turn On Notifications If you Subscribe & upgrade with my code I will upgrade with yours. I'll be upgrading almost everyday! Just reach me on any of my socials with your code, having used mine. Subscribe & use my code, I will use in return! https://www.genesis-mining.com/a/681410 Genesis-Mining Upgrade Code : 7yMUI3 to get 3% off. The views and opinions on this channel are collected researched and express with the aim of informing anyone willing ...

    published: 14 May 2017
Bitcoin - Transaction block chains

Bitcoin - Transaction block chains

  • Order:
  • Duration: 11:25
  • Updated: 02 May 2013
  • views: 144576
videos
The mechanics of a bitcoin transaction block chain, which is a construct that is generated by bitcoin miners and functions as a global ledger for recording and validating bitcoins. More free lessons at: http://www.khanacademy.org/video?v=QzDO44oZWtE Video by Zulfikar Ramzan. Zulfikar Ramzan is a world-leading expert in computer security and cryptography and is currently the Chief Scientist at Sourcefire. He received his Ph.D. in computer science from MIT.
https://wn.com/Bitcoin_Transaction_Block_Chains
E675: Adam Ludwin CEO Chain on creating his tool for top financial firms to use blockchain; DAO hack

E675: Adam Ludwin CEO Chain on creating his tool for top financial firms to use blockchain; DAO hack

  • Order:
  • Duration: 1:26:02
  • Updated: 20 Sep 2016
  • views: 2365
videos
Entrepreneurs are driving all of the innovation today, and this episode's guest is no exception. Adam Ludwin, CEO & Co-founder of Chain created a tool that's helping top financial firms (NASDAQ, CapitalOne, Citi, Fidelity, Visa & more) deploy the blockchain. Adam demos his technology, and offers a fascinating and super clear explanation of how/why bitcoin & the blockchain were developed, how it works, common misperceptions, how the DAO hack happened & long-term effects, and how he got that insanely amazing domain name. Jason and Adam venture deep into other tech & culture territory, including whither Apple, who will buy Twitter, Snapchat v. Instagram, religion, oppressed societies, Hamilton (The Musical), and the hardest part of a startup (hint: it's not the starting up). Click to tweet "thank you" to our partners (can edit before sending): http://ctt.ec/57e3f Timestamps 00:29 Welcome from Jason. Only entrepreneurs can solve problems & innovate in technology these days. 01:51 Was introduced to bitcoin back in 2011. Thought this was dangerous, destabilizing, and transformative. Hasn't been any of these things and mostly been a disappointment to VCs. 04:05 However: out of this Blockchain has emerged as the underlying architecture of cryptocurrency, and the true innovation, here to stay. Introduces guest Adam Ludwin, CEO & Co-founder of Chain. 05:38 Adam explains origins of company as a bitcoin API. Early customers (NASDAQ, Fidelity) didn't at the time understand the mechanics of bitcoin. Adam explains the difference between digital copying (email) and digital transferring (money). 12:06 Partner break - Thank you, Braintree. 15:53 Adam tells the story of how he got the amazing domain, Chain.com. 17:54 Further debate on bitcoin, use cases. It's like bittorrent. It will always be used by people who are off the grid, or want to be. 19:55 Discussion on ethereum, the number 2 cryptocurrency behind bitcoin. Segue into the DOA (Decentralized Autonomous Organization) project. 25:35 Partner break - Thank you, Squarespace. 28:02 Back to ethereum, and its vulnerability. Its smart contract is written by a program. On to the DOA hack & fall-out. (Two ethereum networks now.) Long-term repercussions on financial institutions. 35:37 Example of The Pudding Guy, accumulating many frequent flyer miles by taking advantage of a promotion by Healthy Choice Foods in 1999. Healthy Choice Foods awarded him 1,253,000 frequent flyer miles. 37:46 Financial infrastructure is so broken. Fintech startups are trying to patch up current systems. We are rewiring the underlying system. 40:53 Adam does a Chain demo, with wallet-to-wallet transfers of different kinds of digital currencies, including reward points, $, also showing the underlying blockchain architecture. 48:21 Remind Jason of Justin Timberline's sci-fi movie "In Time" and his arm code with a bitcoin balance. 49:28 Chain business model. Expensive and scales with volume. We did first production network with NASDAQ. For private market security. Their entire cap table is on blockchain. 51:28 Theory that in the future, company stock will move as freely as public company stock. Jason asks, if you could buy only three stocks and hold them for the rest of your life? 52:56 Discussion about Apple. Still innovating? They break it down. Versus Tesla, Uber, Google, Amazon, Square. 01:00:00 Onto Twitter. It's a mess, and will it ever go away as a product?Who will buy it? (Google or Facebook/) 01:07:33 Onto to Instagram v. Snapchat. Facebook just straight up copied Stories, and is unapologetic. Debate: Jason is disgusted, Adam thinks it's good for users. Other examples of copycats. 01:14:52 Example of Theranos and people should start calling b.s. more. Who is candid in Silicon Valley? Segue into Sapiens book and the thesis that indigenous not necessary better, there is such a thing as progress. Onto globalization and the need for some states/religions to evolve. 01:19:40 Chain is hiring! Who are they looking for? What is the culture like? Be interdisciplinary. 01:20:26 How hard it is to be a founder and one of the most important lessons of entrepreneurship.
https://wn.com/E675_Adam_Ludwin_Ceo_Chain_On_Creating_His_Tool_For_Top_Financial_Firms_To_Use_Blockchain_Dao_Hack
How the blockchain is changing money and business | Don Tapscott

How the blockchain is changing money and business | Don Tapscott

  • Order:
  • Duration: 18:50
  • Updated: 16 Sep 2016
  • views: 394201
videos
What is the blockchain? If you don't know, you should; if you do, chances are you still need some clarification on how it actually works. Don Tapscott is here to help, demystifying this world-changing, trust-building technology which, he says, represents nothing less than the second generation of the internet and holds the potential to transform money, business, government and society. TEDTalks is a daily video podcast of the best talks and performances from the TED Conference, where the world's leading thinkers and doers give the talk of their lives in 18 minutes (or less). Look for talks on Technology, Entertainment and Design -- plus science, business, global issues, the arts and much more. Find closed captions and translated subtitles in many languages at http://www.ted.com/translate Follow TED news on Twitter: http://www.twitter.com/tednews Like TED on Facebook: https://www.facebook.com/TED Subscribe to our channel: http://www.youtube.com/user/TEDtalksDirector
https://wn.com/How_The_Blockchain_Is_Changing_Money_And_Business_|_Don_Tapscott
How the blockchain will radically transform the economy | Bettina Warburg

How the blockchain will radically transform the economy | Bettina Warburg

  • Order:
  • Duration: 14:58
  • Updated: 08 Dec 2016
  • views: 321567
videos
Say hello to the decentralized economy -- the blockchain is about to change everything. In this lucid explainer of the complex (and confusing) technology, Bettina Warburg describes how the blockchain will eliminate the need for centralized institutions like banks or governments to facilitate trade, evolving age-old models of commerce and finance into something far more interesting: a distributed, transparent, autonomous system for exchanging value. TEDTalks is a daily video podcast of the best talks and performances from the TED Conference, where the world's leading thinkers and doers give the talk of their lives in 18 minutes (or less). Look for talks on Technology, Entertainment and Design -- plus science, business, global issues, the arts and much more. Find closed captions and translated subtitles in many languages at http://www.ted.com/translate Follow TED news on Twitter: http://www.twitter.com/tednews Like TED on Facebook: https://www.facebook.com/TED Subscribe to our channel: http://www.youtube.com/user/TEDtalksDirector
https://wn.com/How_The_Blockchain_Will_Radically_Transform_The_Economy_|_Bettina_Warburg
How to Make Money with Bitcoin and the Blockchain

How to Make Money with Bitcoin and the Blockchain

  • Order:
  • Duration: 37:49
  • Updated: 12 May 2017
  • views: 13672
videos
I am receiving countless requests for information concerning how to get into BitCoin, how to make money off of mining and a constant need for more information. I am no expert so I would like to present someone that is. For more information on BitClub click below http://bitclub.network/koreyrowe1 This is Joby Weeks. “In the last two years my wife and I have visited 400+ cities and over 100+ countries. We basically fly around the world on private jets selling machines that print money. Would you like a machine that prints money?” Meet Joby and his wife Stephanie Weeks, entrepreneurs, investors, the front-line soldiers in a battle to change the way you spend and save your money. Except the money they want you to use is this NEW magical Internet money called Bitcoin! By now you have probably heard of Bitcoin, but still have no idea what it is. “Isn’t that what was used to, you know, buy drugs off the internet?” With a shaky start, one Bitcoin has now skyrocketed to now being worth more than an ounce of gold and continues climbing fast. If you haven't invested you may have missed the boat but you haven’t missed the cruise. Tag along for the ride of a lifetime as filmmaker Korey Rowe follows Joby and Stephanie Weeks around the world for 12 months! Starting in Rancho Santa Fe, California, we meet up to race Ferraris before jumping on a private jet to Vegas and spending a few days in a penthouse on the strip. All while meeting the true movers and shakers in the Bitcoin financial universe. Joby and Stephanie never stop moving. They call themselves Perpetual Travelers! On a perpetual workcation, promoting and living off of Bitcoin wherever they go… Back on the Jet to Miami, St Kitts and then off Jeeping around Europe before swinging south for some dirt biking in the Sahara. Come crash at Richard Branson's pad in Marrakech, before skipping off to Necker Island for the Blockchain Summit Conference. Find out why all the Billionaires think Bitcoin and the Blockchain are the next big thing! See the underground mining pools of Iceland and learn everything you need to know about this evolving currency and others like it. Korey will get never before seen access to people and places fundamental to the development and evolution of Bitcoin. This will include interviews with the movers and shakers of Bitcoin, the Master and Monster Builders behind the infrastructures supporting the blockchain. Hear the stories of fortunes both made and lost, instant millionaires and instant failures. Tag along as we witness the future of money blossom to new heights or crash and be forgotten as a passing fad. Follow Joby and his wife as they struggle to fight the international banking cartel, hackers trying to steal their wealth, dodging liars and scammers, while trying to bring Bitcoin to the world. Meet the Founders of the Global Network of Bitcoin enthusiasts and miners called “The BitClub” Get up to date on current technologies from some of the richest investors in the world, and get inside knowledge of the next big thing before it happens. All this and more, filmed over 12 months from behind closed doors and in the wildest places on earth. See a world you only hear about in whispers, the world of Bitcoin. This is, “The Bitcoin Revolution.” www.koreyrowe.com
https://wn.com/How_To_Make_Money_With_Bitcoin_And_The_Blockchain
Why the blocksize limit keeps Bitcoin free and decentralized

Why the blocksize limit keeps Bitcoin free and decentralized

  • Order:
  • Duration: 3:04
  • Updated: 16 May 2013
  • views: 12755
videos
The blocksize limit is what ensures everyone can participate in the Bitcoin network, and it ensures everyone can participate anonymously should they choose too. Some people want to remove this protection to make Bitcoin scale, but we can have the best of both worlds: high transaction volume and true decentralization with off-chain transactions. Learn more at http://keepbitcoinfree.org Anitmation produced by Stone Canoe (http://www.stonecanoe.ca)
https://wn.com/Why_The_Blocksize_Limit_Keeps_Bitcoin_Free_And_Decentralized
How To Transfer Bitcoin from Coinbase to Your Blockchain Wallet

How To Transfer Bitcoin from Coinbase to Your Blockchain Wallet

  • Order:
  • Duration: 5:08
  • Updated: 14 Feb 2017
  • views: 13769
videos
http://somethingverycool.com/how-to-transfer-bitcoin-from-coinbase-to-your-blockchain-wallet/ How To Transfer Bitcoin from Coinbase to Your Blockchain Wallet The popularity of bitcoin is gaining more and more, and Coinbase is a very popular and trusted website to initially purchase bitcoin. Once purchased many people like to move their bitcoins to their Blockchain wallet, one of the most secure wallets available. The first step is to generate a 'Receive' bitcoin address from your Blockchain wallet. Then once that is copied you simply paste the bitcoin address into the 'Send' field in Coinbase. Then enter the amount of bitcoin that you wish to transfer and enter a short description to remind you of the purpose of the transaction, i.e. moving bitcoin from Coinbase to Blockchain. And that is pretty much it. Here are the top 3 search results on Google for how to transfer bitcoin from coinbase to your blockchain wallet: blockchain.info - Sending from Coinbase to Blockchain wallet ... http://bitcoin.stackexchange.com/questions/41976/sending-from-coinbase-to-blockchain-wallet-numbers-explained Dec 21, 2015 - Sending from Coinbase to Blockchain wallet. ... Therefore I assume that you had a single UTXO of the size 0.90130821 BTC in your wallet. coinbase.com - Is it possible to transfer BitCoins from BlockChain to ... http://bitcoin.stackexchange.com/questions/16848/is-it-possible-to-transfer-bitcoins-from-blockchain-to-coinbase Nov 18, 2013 - I have BitCoins in BlockChain - is it possible to transfer these into ... If there is any chance your coins will be sent back by the receiving wallet, ... Coinbase | Wallet Services https://support.coinbase.com/customer/en/portal/topics/601112-wallet-services/articles If you are receiving bitcoin or ether from another Coinbase customer, you can have them send bitcoin to the email address you used when creating your account. How To Transfer Bitcoin from Coinbase to Your Blockchain Wallet https://www.youtube.com/watch?v=IWhNzn4hb6Q
https://wn.com/How_To_Transfer_Bitcoin_From_Coinbase_To_Your_Blockchain_Wallet
The Blockchain & Bitcoin - Computerphile

The Blockchain & Bitcoin - Computerphile

  • Order:
  • Duration: 17:46
  • Updated: 24 Mar 2017
  • views: 130858
videos
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 https://twitter.com/computer_phile 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
https://wn.com/The_Blockchain_Bitcoin_Computerphile
Introduction to Bitcoin, Blockchain and Decentralized Technology

Introduction to Bitcoin, Blockchain and Decentralized Technology

  • Order:
  • Duration: 7:29
  • Updated: 21 Jun 2016
  • views: 22928
videos
I'm excited to announce a new course available at pluralsight: https://app.pluralsight.com/library/courses/bitcoin-decentralized-technology?utm_source=youtube&utm_medium=video&utm_campaign=authordemo Outline Module 1: Bitcoin Concepts and Basic Use - Demo: buying a digital video online - What gives Bitcoin value? - Big Ideas: openness, privacy, decentralized, cryptocurrency, programmable - Basic structure: a collectively maintained ledger - Transactions: how money is sent in Bitcoin - Smart Contract example: crowdfunding - Getting Bitcoin: exchange, ATM, in person, pros / cons - Demo: buying Bitcoin on an exchange - Wallets: How to store and use Bitcoin, mobile, online, hardware, cold storage - Demo: using a hardware wallet - Bitcoin mining - Demo: accepting Bitcoin on a website with BitPay Module 2: How Bitcoin Works Under the Hood - Bitcoin software universe: from wallets and libraries to full nodes - Demo: Installing Bitcore, javascript Bitcoin library, create Bitcoin address - Digital Signatures, - Bitcoin addresses - Transaction structure, UTXOs, scripts - Demo: creating and sending a transaction on testnet with Bitcore - Ledger consensus (voting) & security - Cryptographic hashes - The blockchain: structure that holds transactions - Coin creation, double spend attacks - SPV (Simplified Payment Verification) Wallets Module 3: Advanced Bitcoin - HD (Hierarchical Deterministic) Wallets - Mnemonic codes (human friendly private key storage) - Demo: derive Bitcoin HD addresses securely on public server without private keys using Bitcore - Multisignature Addresses for shared wallets & backup - Low trust escrow with multisignature addresses - Bitcoin challenges: centralization due to mining & software control, blocksize debate - Soft vs Hard Forks (software upgrade procedures) - Segregated Witnesses - Payment Channels & Lightning Networks (secure, off-chain transactions) - Check Lock Time Verify (time-based script logic) - Replace by Fee (update stuck transactions) - Payment Protocol (secure payment address delivery) - CoinJoin (mixing transactions for privacy) Module 4: Beyond Bitcoin - Altcoins, metacoins, colored coins & side chains - Comparison metrics - Byzantine General’s problem - Proof-of-Work Consensus Alternatives (Primecoin, Foldingcoin) - Proof-of-Stake (Peercoin, NXT, future Ethereum, Bitshares delegated Proof-of-Stake) - Permissioned / Private blockchains for banking, enterprise (distributed database or something more? Multichain, R3) - Seeking high performance blockchains (Tendermint, Ripple, BigChainDB) - Privacy procotols & projects - why needed? (Monero, Ring Signatures, Stealth Addresses) - Zero Knowledge Proofs & Zerocash - Stability coins: Digix, Tether, BitUSD, Nubits, MakerDAO - Ethereum - Open, Decentralized Computer for Smart Contracts - Demo: create and use Smart Contract (create your own token) on Ethereum - Prediction Markets & Augur - IoT (Internet of Things) and DAOs (Decentralized Autonomous Organizations), with Slock.it - Decentralized Storage with Storj & IPFS (Interplanatary File System) - Decentralized Identity and Reputation (Namecoin, Identify & Onename)
https://wn.com/Introduction_To_Bitcoin,_Blockchain_And_Decentralized_Technology
Blockchain Technology Explained: What is a Blockchain?

Blockchain Technology Explained: What is a Blockchain?

  • Order:
  • Duration: 4:01
  • Updated: 12 Mar 2017
  • views: 2498
videos
This video https://youtu.be/eXJHPDs4M3Y provides an easy to understand introduction to Blockchain Technology. Please leave comments and questions below the video. Here is the full transcript for your convenience: What is a Blockchain? A Blockchain is a distributed database that multiple parties share and everyone can trust. A Blockchain network provides a mutually trusted, transparent way of sharing and transacting. Each party participating in a Blockchain network maintains their own copy of the database. What makes Blockchain secure? Transactions on the database are atomic (this means that they're processed one at a time). The next transaction will be a different write or a read, but only after the preceding transaction has completed (or failed). Each write to the database is considered a ‘block’. Each new block contains a cryptographic hash (a unique fingerprint) of the previous block, creating a chain that can always be validated by checking the hashes back to the original root block. Before a block can be committed, all participants are required to validate the transaction and provide consensus that the block can be added to the chain. This effectively makes it impossible to add a record unless all parties participating in the blockchain agree the record is valid. Because all records are chained together by their hash value, once committed to the chain, all records are immutable (they cannot be changed). It is impossible to alter a previous record without altering every party’s copy of the chain. If one node is compromised, then it can no longer participate in the chain until it regenerates the true chain from the other participants. How does Blockchain prevent double spending? A major challenge of digitising assets is the potential to spend/redeem/use an asset multiple times. Because digital assets are much easier to forge than many traditional assets (such as currency, tickets, physical coupons, etc.), a secure system is required to ensure that an asset is only used once. With Blockchain, every time an asset is used or consumed, the owner of the asset signs the transfer with a private cryptographic key. This key is unique to the owner and is extremely difficult to forge. In order to initiate the transaction, the transferrer requires both the asset and their private key. The Blockchain will check both the validity of the key, and ownership of the asset. Therefore, even if the asset is cloned, it cannot be used without the private key. Once the transaction has been committed to the chain, the owner of the asset will have changed. This means, each node that receives a second transaction requesting transfer of ownership (or redemption, etc.) will see that there was a previous transaction that already transferred the asset and will reject that transaction. This prevents a second transfer block from being added to the chain. How does Blockchain ensure privacy? Personal data and identifiers are not required to be stored in the chain. Such data is stored as a hash value which provides both anonymity and security. The user may provide data such as their name, telephone number, email address, Facebook account id, unique user name, password etc. (in reality a combination of these values is used) to determine their identity. This data is hashed to provide a unique token that can only be recreated by providing the original values, and only this hash is stored to identify the party in the chain. Since it is impossible to obtain the input values by reverse engineering a hash value, the user is practically anonymous to all parties within the chain. But, they can be validated whenever required by providing the original values used to create the hash. How is PassKit utilising Blockchain? PassKit provides a private blockchain service to parties that wish to issue, record or redeem anything of value. This can be anything from loyalty points, punch card programmes, event tickets, boarding passes, to government identification, insurance policies or claim histories, tax records and educational transcripts. We utilise existing mobile wallet technology as a gateway for transacting, validating or querying our secure, private Blockchain networks. We ensure that mobile wallet content can be validated and trusted in a frictionless, realtime manner, by both consumers and by the businesses and institutions with whom they transact.
https://wn.com/Blockchain_Technology_Explained_What_Is_A_Blockchain
DIY Post Puller made with a chain hoist - remove metal or wood fence post w/o digging

DIY Post Puller made with a chain hoist - remove metal or wood fence post w/o digging

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  • Duration: 3:08
  • Updated: 22 Jul 2015
  • views: 5810
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The beauty of this setup is that the entire post is usually able to clear the bottom of the hole, except in this case where I stopped it just shy of ground level. After many years of attempting to pull posts with levers and bottle jacks, I decided to build a portable solution for one man operation. Initially the tripod had a fixed top plate with 3 1" square tubes welded on with a large d-ring loop welded on for the chain hoist or come-along. At some point, I decided to shorten the entire apparatus and go with d-rings as a common top connector. This enables the legs to be articulated individually which can be useful in tight situations. This rig is constructed entirely with cold connections - a few holes to pin the d-ring shanks to the end of the poles. I have pulled up a double post with this rig - someone had sunk a wood post next to a cut off metal post with concrete thereby joining the two sections of concrete. The resulting mass came out whole and weighed around 350lbs. One has to use common sense when utilizing something like this: -the feet need pads so they do not sink into the ground -the very heavy duty chain must be attached in such a way that it binds to the post (no need to drill into the post) -orient your pull so that the concrete clears obstacles such as a sidewalk -orient the tripod so that the post clears the chain hoist/tripod -test your setup by dead lifting something that isn't too heavy first -remove all wire and nails from post before pulling for personal safety -take your time - don't rush it especially when breaking the surface tension/suction that may exist Setup takes more time than the actual pulling of the post as you can see. This video was shot on my phone and unfortunately didn't show the ground around the post rising up. Chain hoist is NOT from HarborFreight. Curious looking leg section is the 4x4 steel mast from a SoloFlex (exercise machine sold in the US) Components: chain hoist chain with clevis hooks 3 poles 3 d-ring trailer hitch connectors D Ring Shackle with threaded pin (to hang chain hoist)
https://wn.com/Diy_Post_Puller_Made_With_A_Chain_Hoist_Remove_Metal_Or_Wood_Fence_Post_W_O_Digging
Chain Hoist Disassembly for Maintenance - Oz Lifting Products

Chain Hoist Disassembly for Maintenance - Oz Lifting Products

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  • Duration: 1:26
  • Updated: 11 Jun 2014
  • views: 6764
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Click http://goo.gl/ghrXG9 to learn more about the Chain Hoist. ABOUT: In this video you will learn how to re-assemble a chain hoist after maintenance. FEATURE and BENEFITS: Overload Protection - This is standard on all hoists and is factory set. The overload is integral with the hoist and prevents the operator from overloading the hoist. When activated, the overload will not allow hoist operation. When the overload is activated, lower the load, if lifting, or release the load, if pulling. Then select a larger capacity hoist, or consult a lifting specialist for another means of operation. Unique Hand Wheel Design - This feature enables the hand chain to successfully feed directly into the wheel sprocket from many directions and angles. Thus, the operator can use the hoist while standing to the side of, or even above the load without fear of the hand chain jamming. Minimal Load Lifting Effort - These hoists require 20% - 35% less effort than the competition. Lift heavy loads with ease. Ideal for frequent lifting/pulling applications. Fully Enclosed Gearing - This protects the gears from contamination and debris. All Steel Construction - These hoists are strong, durable and rugged, providing a long and dependable service life. Forged Alloy Steel Hooks Cast Steel Safety Latches - Each heavy duty cast steel safety latches has a bolt and lock nut connection rather than roller pins used by most competitors. This feature facilitates easy latch changing in the field. Thrust Bearing on Lower Hook - Allows easy rotation of load while suspended & prevents load chain twisting. Electro Zinc Plated Hand & Load Chain - Provides a durable non oily finish. Fully Machined Lift Wheel - This feature perfectly accepts the chain allowing for a smooth long lasting operation. Totally Enclosed Gearing - This design protects gears from contamination and debris. Lifting or Pulling - This hand hoist can be used for lifting or pulling which makes for a more flexible and versatile tool. Low Headroom - Provides maximum lift by minimizing space taken up by the hoist, making it ideal in restricted space applications. Corrosion Protection - Hoist components are powder coated to prevent corrosion. Product I.D. labels are made from stainless steel. Weather Proof Load Holding Brake - Both lever and chain hoists have a protected Weston Brake which holds the load during the entire operation. The hoists are also equipped with a unique twin pawl design. All Gears and Shafts Run on Roller Bearings - This feature provides smooth controlled operation as well as maintenance free lubrication. Stainless Steel Riveted ID Tags - These tags will not rust and will maintain clear distinct information for easy identification. Safety Yellow Powder Coating - This process provides a long lasting finish in hostile environments. Maintenance - Hoists can be quickly disassembled for fast and easy maintenance. Certification - Each hoist is rigged and load tested here in the U.S. at OZ Lifting and comes with a serial number and test certificate dedicated to each hoist. Each hoist is double checked and signed providing traceability throughout the entire manufacturing process. Click http://goo.gl/ghrXG9 to learn more about the Chain Hoist.
https://wn.com/Chain_Hoist_Disassembly_For_Maintenance_Oz_Lifting_Products
IBM and Maersk Demo: Cross-Border Supply Chain Solution on Blockchain

IBM and Maersk Demo: Cross-Border Supply Chain Solution on Blockchain

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  • Duration: 3:21
  • Updated: 15 Mar 2017
  • views: 17037
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Demo of how IBM and Maersk are digitizing and simplifying global trade to create trust and transparency in the supply chain using blockchain technology--a distributed, permissioned platform accessible by the supply chain ecosystem designed to exchange events data and handle document workflows. The example shows how shipping flowers can create trust and security in a digitized workflow while improving efficiencies of global supply chains. Learn about this solution: http://www-03.ibm.com/press/us/en/pressrelease/51712.wss Visit https://www.ibm.com/blockchain/
https://wn.com/Ibm_And_Maersk_Demo_Cross_Border_Supply_Chain_Solution_On_Blockchain
De Uber voor de Verzekeringsbranche met smart contracts en block chain!

De Uber voor de Verzekeringsbranche met smart contracts en block chain!

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  • Duration: 19:56
  • Updated: 03 Oct 2016
  • views: 1218
videos
De impact en mogelijkheden van sociale innovatie, peer-to-peer platforms en blockchain. Klik hier voor een eerder filmpje waar Justin het basis concept van de blockchain doorneemt : https://www.youtube.com/watch?v=f9oEE5Qf0Co Voor meer informatie : j.schlee@anva.nl of @justinschlee
https://wn.com/De_Uber_Voor_De_Verzekeringsbranche_Met_Smart_Contracts_En_Block_Chain
The Blockchain and Us (2017)

The Blockchain and Us (2017)

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  • Duration: 31:27
  • Updated: 04 Apr 2017
  • views: 159113
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A film by Manuel Stagars http://www.blockchain-documentary.com In 2008, Satoshi Nakamoto invented bitcoin and the blockchain. For the first time in history, his invention made it possible to send money around the globe without banks, governments or any other intermediaries. The concept of the blockchain isn’t very intuitive. But still, many people believe it is a game changer. Economist and filmmaker Manuel Stagars portrays this exciting technology in interviews with software developers, cryptologists, researchers, entrepreneurs, consultants, VCs, authors, politicians, and futurists from the United States, Canada, Switzerland, the UK, and Australia. The Blockchain and Us is no explainer video of the technology. It gives a view on the topic, makes it accessible and starts a conversation about its potential wider implications in a non-technical way. The film deliberately poses more questions than it answers. For a deep dive, see all full-length interviews from the film here: http://www.blockchain-documentary.com/interviews Credits: Conversations with (in alphabetical order) David Birch Director of Innovation, Consult Hyperion Guildford, UK Perianne Boring Founder & President, Chamber of Digital Commerce Washington, USA Christian Decker Core Tech Engineer, Blockstream Zurich, Switzerland Taylor Gerring Co-Founder, Ethereum Zug, Switzerland Marco Carlo Grossi Director Audit & Risk Advisory, Deloitte Switzerland Zurich, Switzerland Caitlin Long Chairman of the Board & President at Symbiont.io New York, USA R. Jesse McWaters Financial Innovation Lead, World Economic Forum New York, USA Paul Meeusen Head Finance and Treasury Services, Swiss Re Zurich, Switzerland Dolfi Müller Mayor of the City of Zug Zug, Switzerland Matthew Roszak Co-Founder & Chairman, Bloq Chicago, USA Guido Rudolphi Founder, Cryptocash Uster, Switzerland Jan Seffinga Partner, Deloitte Switzerland Zurich, Switzerland Elizabeth Stark Co-Founder & CEO, Lightning San Francisco, USA Alex Tapscott Founder & CEO, Northwest Passage Ventures Co-Author "Blockchain Revolution" Toronto, Canada Lars Thomsen Chief Futurist & Founder, Future Matters Zurich, Switzerland Eric Van der Kleij Founder Adeptra, London Tech City, Level39. Adviser UK Govt, Kickstart Accelerator London, UK Roger Wattenhofer Professor, Distributed Computing Group, Swiss Federal Institute of Technology (ETH) Zurich, Switzerland Rik Willard Founder & Managing Director, Agentic Group New York, USA Steve Wilson Digital Identity Innovator & Analyst Sydney, Australia Additional conversations and special thanks (in alphabetical order): Iris Belle, Ben Bledsoe, Thomas Bromehead, Richard Cheng, Dario Duran, Marie Farrar Knowles, Olga Feldmeier, Sony Fricker, Daniel Gasteiger, Daniel Grassinger, Johs. Hoehener, Richard Kastelein, Leanne Kemp, Thomas Kern, Francine Klopfenstein, Veronica Lange, Claire LaRocca, Adriano B. Lucatelli, Christian Mäder, Ruedi Maeder, Luzius Meisser, Michael Monceaux, Martin Müller, Mia Mutic, Ian Petchenik, Nathaniel Popper, Ramon Quesada, Kamesh Raghavendra, Brian Rogers, Jouko Salonen, Vadim Shamigulov, Raffaela Stelzer, Don Tapscott, Elizabeth Wesson Many thanks to all conversation partners and all others who made this film possible Additional thanks (in alphabetical order): Agentic Group, Blockchain News, Blockstream, Bloq, Chamber of Digital Commerce, Constellation Research, Consult Hyperion, Cryptocash, Deloitte Switzerland, Ethereum Foundation, Everledger, Flightradar24, Future Matters, ISO-20022.ch, Lightning, Lockstep Consulting, Municipality of Zug, nexussquared, Northwest Passage Ventures, Swiss Federal Institute of Technology (ETH), Swiss Re, Symbiont, World Economic Forum (WEF), Zurich Airport Recording of live air traffic courtesy of Flightradar24 Chinese subtitles: Richard Cheng Dutch subtitles: Rein Jonkman French translation: Thomas Bromehead Portuguese subtitles: Caio Rearte Russian subtitles: Vadim Shamigulov, Sergey Sevantsyan Spanish subtitles: Jose Felip Daras and Avalbit.org team Many thanks to all individuals and teams who contributed additional subtitles and translations. Cinematography, Editing, Music, Narration & Sound Design by Manuel Stagars © 2017 Manuel Stagars The goal of this film is to encourage the conversation about the economic and social impacts of blockchain technology. Participate in the comments and subscribe to the channel to stay in the loop.
https://wn.com/The_Blockchain_And_US_(2017)
Block Chain Land Registry & Burst Mining

Block Chain Land Registry & Burst Mining

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  • Duration: 7:46
  • Updated: 14 May 2017
  • views: 198
videos
Burstcoin is at a penny which is super interesting as this is a cryptocurrency that can be mined on the extra space on your computer harddrive, check it out! https://www.youtube.com/c/GbonikzBits?sub_confirmation=1 Thank You for Watching! I really appreciate it, Please feel free to Like | Share | Comment | Subscribe | Hit The Bell | Turn On Notifications If you Subscribe & upgrade with my code I will upgrade with yours. I'll be upgrading almost everyday! Just reach me on any of my socials with your code, having used mine. Subscribe & use my code, I will use in return! https://www.genesis-mining.com/a/681410 Genesis-Mining Upgrade Code : 7yMUI3 to get 3% off. The views and opinions on this channel are collected researched and express with the aim of informing anyone willing listen. All comments are welcome and appreciated. Bitcoin can be purchased in person by peer to peer purchases or through currency exchanges and online wallets. I am NOT a financial advisor, I am sharing with you my experience and expecting you to do your research about the topic. https://www.Facebook.com/gbonikz https://www.Twitter.com/gbonikz https://www.Instagram.com/gbonikz https://www.Steemit.com/@gbonikz Create free wallet at: https://blockchain.info/wallet/#/signup Coin Base : https://www.coinbase.com/join/58517c1d1d85ed7b5a8630ea BTC : 134hT473UWKQtUeggS7QHxDoiJDnYGaEqS ETH : 0x052f8EAE710948fCB6D816298070164BF803b9bc LTC : LcYd8oSui3vS5WUEm2AxPCucCGK1267jE2 DASH: XfyFVvNTLiSfdC9CxGjwg41cb1MBM8QunJ DOGE : DPFPhPiatSuetD9NX3p6B1aCeC4M1Cuiuj KeepKey https://www.amazon.com/gp/product/B0143M2A5S/ref=as_li_tl?ie=UTF8&tag=gbonikz-20&camp=1789&creative=9325&linkCode=as2&creativeASIN=B0143M2A5S&linkId=860e35df6b17463be9955e44eb95c19b Ledger Nano https://www.amazon.com/gp/product/B01MZDMHZ8/ref=as_li_tl?ie=UTF8&tag=gbonikz-20&camp=1789&creative=9325&linkCode=as2&creativeASIN=B01MZDMHZ8&linkId=04b2c802c3449d185233dd9d274b3fc4 Trezor https://www.amazon.com/gp/product/B00R6MKDDE/ref=as_li_tl?ie=UTF8&tag=gbonikz-20&camp=1789&creative=9325&linkCode=as2&creativeASIN=B00R6MKDDE&linkId=ff8d076faab7fbf29bd0547fac394b98
https://wn.com/Block_Chain_Land_Registry_Burst_Mining