• Data Driven #5: Blockchain and Big Data

    What is a blockchain, and how does it relate to big data? Find out in episode 5 of the Data Driven series. Check out this playlist for more Data Driven videos about big data topics: http://bit.ly/sfdatadriven More information about the Syncfusion Big Data Platform: http://bit.ly/bigdataplatform16 --------------------------------- Subscribe to Syncfusion on YouTube: http://bit.ly/syncfusionyoutube Sign up to receive email updates: http://bit.ly/syncfusionemail Join the Syncfusion community: Facebook: https://www.facebook.com/Syncfusion/ Twitter: https://twitter.com/Syncfusion LinkedIn: https://www.linkedin.com/company/syncfusion/ Instagram: http://instagram.com/syncfusion

    published: 20 Dec 2016
  • Opening supply chain data on the blockchain: Jessi Baker - ODI Summit 2015

    Jessi Baker (Provenance) argues that blockchain technology could be key in the opening up of supply chain data. ____________________ Get involved For more information on how you can learn more about open data and how it can benefit you, your business and the world, visit http://theodi.org. ____________________ ODI Summit This video was taken at the ODI Summit, where over 700 people from around the world joined the Open Data Institute (ODI) at the BFI to celebrate Generation Open. As part of the ODI Summit we heard from inspirational and diverse keynote speakers, including Sir Tim Berners-Lee, Martha Lane Fox, Sir Nigel Shadbolt and many more. ____________________ Find us online: ODI videos: bit.ly/odi_vimeo ODI photos: bit.ly/odi_flickr ODI audio: bit.ly/odi_soundcloud ODI slides: b...

    published: 16 Dec 2015
  • The Power of the Blockchain

    You won't find this data structure in your computer science textbooks yet, but it will soon underpin the way the entire Internet works. Let's talk about what the blockchain is and how it can be used to improve our AI. Code for this video: https://github.com/llSourcell/The_Power_of_the_blockchain Charles-David's winning code: https://github.com/alkaya/Optimizer-cotw Parminder's runner up code: https://github.com/Trion129/Gradient-Descent-from-scratch Please subscribe! And like. And comment. That's what keeps me going. More learning resources: https://blog.bigchaindb.com/blockchains-for-artificial-intelligence-ec63b0284984 https://medium.com/towards-data-science/the-blockchain-and-ai-fbfa691f10e0 https://medium.com/the-intrepid-review/how-does-the-blockchain-work-for-dummies-explained-s...

    published: 09 Jun 2017
  • "Blockchain & Big Data", Trent MConaghy, Founder & CTO at ascribe GmbH

    "Blockchain & Big Data", Trent MConaghy, Founder & CTO at ascribe GmbH Watch more from Data Natives 2015 here: http://bit.ly/1OVkK2J Visit the conference website to learn more: www.datanatives.io Follow Data Natives: https://www.facebook.com/DataNatives https://twitter.com/DataNativesConf Stay Connected to Data Natives by Email: Subscribe to our newsletter to get the news first about Data Natives 2016: http://bit.ly/1WMJAqS Presentation Slides: https://www.slideshare.net/secret/8gK4MtBHS8AJyU About the author: Trent McConaghy is co-founder & CTO of ascribe, which uses blockchain technology and internet-scale machine learning to secure digital creations. Before that, he co-founded Solido Design Automation, which uses large-scale machine learning to help drive Moore's Law. Solido is no...

    published: 18 Jan 2016
  • GOTO 2017 • Blockchain: The Slowest (and most Fascinating) Database in the World • Stefan Tilkov

    This presentation was recorded at GOTO Amsterdam 2017 http://gotoams.nl Stefan Tilkov - Co-founder & Principal Consultant at innoQ ABSTRACT As the foundation of Bitcoin's virtual currency, the blockchain technique is now the starting point for numerous new business ideas. The usual suspects surpass each other with superlatives how "disruptive" the Blockchain based [...] Download slides and read the full abstract here: https://gotoams.nl/2017/sessions/123 https://twitter.com/gotoamst https://www.facebook.com/GOTOConference http://gotocon.com

    published: 20 Jun 2017
  • Video: How to monetize healthcare using blockchain (Peter B. Nichol)

    Today, I’ll share my insights on four ways to monetize blockchains for health: Smart health contracts, Universal ledgers for global genomic sequencing, Peer-to-peer insurance, and Quantified self-data standards. Professional blog: http://www.cio.com/author/Peter-B.-Nichol/ Personal blog: http://leadersneedpancakes.com/ LinkedIn: http://bit.ly/LinktoPeter For speaking inquires please contact Peter B. Nichol at peter.nichol@orocainnovations.com.

    published: 08 Aug 2016
  • The Future of Insurance : Blockchain, IoT and Big Data

    Presentation by Ugur Ozdemir of how "The Future of Insurance" will see out from the perspective of three disruptive innovations Blockchain, IoT and Big Data.

    published: 19 Jun 2016
  • Medical Record Management on the Blockchain | The Future of Finance | Singularity University

    Brian Forde on medical record management. Subscribe: http://bit.ly/1Wq6gwm Connect with Singularity University: Website: http://singularityu.org Singularity HUB:http://singularityhub.com Facebook: https://www.facebook.com/singularityu Twitter: https://twitter.com/singularityu Linkedin: https://www.linkedin.com/company/singularity-university Google+: https://plus.google.com/+singularityu About Singularity University: Singularity University is a benefit corporation headquartered at NASA’s research campus in Silicon Valley. We provide educational programs, innovative partnerships and a startup accelerator to help individuals, businesses, institutions, investors, NGOs and governments understand cutting-edge technologies, and how to utilize these technologies to positively impact billions o...

    published: 12 Sep 2016
  • Blockchain and the Internet of Things explained

    A blockchain ledger can create a tamper-resistant record when information needs to be shared among business partners without setting up a costly centralized IT infrastructure. Let’s look at how supply chains benefit when data is shared through a private blockchain.

    published: 02 Nov 2016
  • Blockchain in the Supply Chain

    ("Skytech" pronounced) players of the applications of the chain-Block developed by SCtech (ie software suppliers dedicated to the development of applications based on the chain-blocks for the management of the supply chain) Procurement (SC) processes: document management, traceability, ancestry and finance. They are currently engaged in (POC) proof-of-concept experiments to identify SC processes will benefit most from block-based applications. These POCs also help determine business case criteria. The software components based on the block-string in the stack build on top of each other, and includes features that expand gradually: Depth of the supply chain: Using traditional two-party exchange data, applications increasingly enable participants to reach SC partners further upstream an...

    published: 18 Feb 2017
  • Blockchain + Streaming Analytics with Ethereum and TIBCO StreamBase

    This video shows why middleware and streaming analytics is relevant for any blockchain project. It discusses how to leverage stream processing and how to integrate with blockchain events. The focus was on integration of TIBCO StreamBase and Ethereum Blockchain. But the same can be done easily for any Hyperledger Blockchain like IBM's Fabric, IROHA or Intel's Sawtooth Lake, or others like R3 Corda or Ripple. For smart contract deployment, I use Browser Solidity and MetaMask. But the same can be achieved with TIBCO StreamBase (or BusinessWorks, too). The live demo can be watched on Youtube. The outlook includes some upcoming topics like - Live Visualization for Real Time Monitoring and Proactive Actions - Cross-Integration with Ethereum and Hyperledger Blockchains -Data Discovery for Histo...

    published: 09 Feb 2017
  • Factom: Adding a Data Layer to the Blockchain

    Factom, in a nutshell, adds a layer of data to the blockchain mechanism that Bitcoin uses to record records of transactions: "A blockchain is a distributed mechanism to lock in data, making it immutable, verifiable and independently auditable. The Bitcoin blockchain was used to create a secure digital currency and payment system."

    published: 25 Mar 2015
  • 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
  • Apertus 0.3 Storing encrypted data on a blockchain

    Browse through the latest blockchain etchings at http://bitfossil.com Download the latest Apertus client at http://Apertus.io In this demonstration we are using Apertus and the Vault feature to store an encrypted message on the bitcoin testnet and then later retrieving it.

    published: 08 Mar 2016
  • ПМЭФ: Big Data, Blockchain и четвертая промышленная революция

    Репортаж Антона Цумана «Пульс города», 2 июня 2017 г.

    published: 03 Jun 2017
  • 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
Data Driven #5: Blockchain and Big Data

Data Driven #5: Blockchain and Big Data

  • Order:
  • Duration: 3:42
  • Updated: 20 Dec 2016
  • views: 1730
videos
What is a blockchain, and how does it relate to big data? Find out in episode 5 of the Data Driven series. Check out this playlist for more Data Driven videos about big data topics: http://bit.ly/sfdatadriven More information about the Syncfusion Big Data Platform: http://bit.ly/bigdataplatform16 --------------------------------- Subscribe to Syncfusion on YouTube: http://bit.ly/syncfusionyoutube Sign up to receive email updates: http://bit.ly/syncfusionemail Join the Syncfusion community: Facebook: https://www.facebook.com/Syncfusion/ Twitter: https://twitter.com/Syncfusion LinkedIn: https://www.linkedin.com/company/syncfusion/ Instagram: http://instagram.com/syncfusion
https://wn.com/Data_Driven_5_Blockchain_And_Big_Data
Opening supply chain data on the blockchain: Jessi Baker - ODI Summit 2015

Opening supply chain data on the blockchain: Jessi Baker - ODI Summit 2015

  • Order:
  • Duration: 7:02
  • Updated: 16 Dec 2015
  • views: 4136
videos
Jessi Baker (Provenance) argues that blockchain technology could be key in the opening up of supply chain data. ____________________ Get involved For more information on how you can learn more about open data and how it can benefit you, your business and the world, visit http://theodi.org. ____________________ ODI Summit This video was taken at the ODI Summit, where over 700 people from around the world joined the Open Data Institute (ODI) at the BFI to celebrate Generation Open. As part of the ODI Summit we heard from inspirational and diverse keynote speakers, including Sir Tim Berners-Lee, Martha Lane Fox, Sir Nigel Shadbolt and many more. ____________________ Find us online: ODI videos: bit.ly/odi_vimeo ODI photos: bit.ly/odi_flickr ODI audio: bit.ly/odi_soundcloud ODI slides: bit.ly/odi_scribd ODI tweets: bit.ly/odi_tweet ODI blog: theodi.org/blog Our website: http://www.theodi.org
https://wn.com/Opening_Supply_Chain_Data_On_The_Blockchain_Jessi_Baker_Odi_Summit_2015
The Power of the Blockchain

The Power of the Blockchain

  • Order:
  • Duration: 9:49
  • Updated: 09 Jun 2017
  • views: 39036
videos
You won't find this data structure in your computer science textbooks yet, but it will soon underpin the way the entire Internet works. Let's talk about what the blockchain is and how it can be used to improve our AI. Code for this video: https://github.com/llSourcell/The_Power_of_the_blockchain Charles-David's winning code: https://github.com/alkaya/Optimizer-cotw Parminder's runner up code: https://github.com/Trion129/Gradient-Descent-from-scratch Please subscribe! And like. And comment. That's what keeps me going. More learning resources: https://blog.bigchaindb.com/blockchains-for-artificial-intelligence-ec63b0284984 https://medium.com/towards-data-science/the-blockchain-and-ai-fbfa691f10e0 https://medium.com/the-intrepid-review/how-does-the-blockchain-work-for-dummies-explained-simply-9f94d386e093 https://www.oreilly.com/ideas/understanding-the-blockchain https://github.com/golemfactory/golem Join us in the Wizards Slack channel: http://wizards.herokuapp.com/ And please support me on Patreon: https://www.patreon.com/user?u=3191693
https://wn.com/The_Power_Of_The_Blockchain
"Blockchain & Big Data", Trent MConaghy, Founder & CTO at ascribe GmbH

"Blockchain & Big Data", Trent MConaghy, Founder & CTO at ascribe GmbH

  • Order:
  • Duration: 21:04
  • Updated: 18 Jan 2016
  • views: 603
videos
"Blockchain & Big Data", Trent MConaghy, Founder & CTO at ascribe GmbH Watch more from Data Natives 2015 here: http://bit.ly/1OVkK2J Visit the conference website to learn more: www.datanatives.io Follow Data Natives: https://www.facebook.com/DataNatives https://twitter.com/DataNativesConf Stay Connected to Data Natives by Email: Subscribe to our newsletter to get the news first about Data Natives 2016: http://bit.ly/1WMJAqS Presentation Slides: https://www.slideshare.net/secret/8gK4MtBHS8AJyU About the author: Trent McConaghy is co-founder & CTO of ascribe, which uses blockchain technology and internet-scale machine learning to secure digital creations. Before that, he co-founded Solido Design Automation, which uses large-scale machine learning to help drive Moore's Law. Solido is now widely used in developing next-gen computer chips. Before that, he co-founded ADA, which used machine learning for analog synthesis. ADA was acquired in 2004. Trent has written two critically-acclaimed books on machine learning, creativity and circuit design, in addition to 50 papers+patents. He has given keynotes & invited talks at MIT, Columbia, Berkeley, JPL, Samsung, Qualcomm, Nvidia, Data Science Day, PyData, and more.
https://wn.com/Blockchain_Big_Data_,_Trent_Mconaghy,_Founder_Cto_At_Ascribe_Gmbh
GOTO 2017 • Blockchain: The Slowest (and most Fascinating) Database in the World • Stefan Tilkov

GOTO 2017 • Blockchain: The Slowest (and most Fascinating) Database in the World • Stefan Tilkov

  • Order:
  • Duration: 46:48
  • Updated: 20 Jun 2017
  • views: 29256
videos
This presentation was recorded at GOTO Amsterdam 2017 http://gotoams.nl Stefan Tilkov - Co-founder & Principal Consultant at innoQ ABSTRACT As the foundation of Bitcoin's virtual currency, the blockchain technique is now the starting point for numerous new business ideas. The usual suspects surpass each other with superlatives how "disruptive" the Blockchain based [...] Download slides and read the full abstract here: https://gotoams.nl/2017/sessions/123 https://twitter.com/gotoamst https://www.facebook.com/GOTOConference http://gotocon.com
https://wn.com/Goto_2017_•_Blockchain_The_Slowest_(And_Most_Fascinating)_Database_In_The_World_•_Stefan_Tilkov
Video: How to monetize healthcare using blockchain (Peter B. Nichol)

Video: How to monetize healthcare using blockchain (Peter B. Nichol)

  • Order:
  • Duration: 7:58
  • Updated: 08 Aug 2016
  • views: 767
videos
Today, I’ll share my insights on four ways to monetize blockchains for health: Smart health contracts, Universal ledgers for global genomic sequencing, Peer-to-peer insurance, and Quantified self-data standards. Professional blog: http://www.cio.com/author/Peter-B.-Nichol/ Personal blog: http://leadersneedpancakes.com/ LinkedIn: http://bit.ly/LinktoPeter For speaking inquires please contact Peter B. Nichol at peter.nichol@orocainnovations.com.
https://wn.com/Video_How_To_Monetize_Healthcare_Using_Blockchain_(Peter_B._Nichol)
The Future of Insurance : Blockchain, IoT and Big Data

The Future of Insurance : Blockchain, IoT and Big Data

  • Order:
  • Duration: 41:52
  • Updated: 19 Jun 2016
  • views: 7454
videos
Presentation by Ugur Ozdemir of how "The Future of Insurance" will see out from the perspective of three disruptive innovations Blockchain, IoT and Big Data.
https://wn.com/The_Future_Of_Insurance_Blockchain,_Iot_And_Big_Data
Medical Record Management on the Blockchain | The Future of Finance | Singularity University

Medical Record Management on the Blockchain | The Future of Finance | Singularity University

  • Order:
  • Duration: 3:41
  • Updated: 12 Sep 2016
  • views: 1256
videos
Brian Forde on medical record management. Subscribe: http://bit.ly/1Wq6gwm Connect with Singularity University: Website: http://singularityu.org Singularity HUB:http://singularityhub.com Facebook: https://www.facebook.com/singularityu Twitter: https://twitter.com/singularityu Linkedin: https://www.linkedin.com/company/singularity-university Google+: https://plus.google.com/+singularityu About Singularity University: Singularity University is a benefit corporation headquartered at NASA’s research campus in Silicon Valley. We provide educational programs, innovative partnerships and a startup accelerator to help individuals, businesses, institutions, investors, NGOs and governments understand cutting-edge technologies, and how to utilize these technologies to positively impact billions of people. Medical Record Management on the Blockchain | The Future of Finance | Singularity University http://www.youtube.com/user/SingularityU
https://wn.com/Medical_Record_Management_On_The_Blockchain_|_The_Future_Of_Finance_|_Singularity_University
Blockchain and the Internet of Things explained

Blockchain and the Internet of Things explained

  • Order:
  • Duration: 1:30
  • Updated: 02 Nov 2016
  • views: 11442
videos
A blockchain ledger can create a tamper-resistant record when information needs to be shared among business partners without setting up a costly centralized IT infrastructure. Let’s look at how supply chains benefit when data is shared through a private blockchain.
https://wn.com/Blockchain_And_The_Internet_Of_Things_Explained
Blockchain in the Supply Chain

Blockchain in the Supply Chain

  • Order:
  • Duration: 34:07
  • Updated: 18 Feb 2017
  • views: 2583
videos
("Skytech" pronounced) players of the applications of the chain-Block developed by SCtech (ie software suppliers dedicated to the development of applications based on the chain-blocks for the management of the supply chain) Procurement (SC) processes: document management, traceability, ancestry and finance. They are currently engaged in (POC) proof-of-concept experiments to identify SC processes will benefit most from block-based applications. These POCs also help determine business case criteria. The software components based on the block-string in the stack build on top of each other, and includes features that expand gradually: Depth of the supply chain: Using traditional two-party exchange data, applications increasingly enable participants to reach SC partners further upstream and downstream in a peer-to-peer mode. Depth of Trust: Program allows SC partners to increase their confidence in the accuracy of the data exchanged and access to data based on the need to know. Standalone execution: The more string-based block applications extends along the first two, more independent drivers, they become manual intervention. Straight-through processing is SCtech's features. The following quick overview provides an assessment of the software components in the stack chain-based stack IT supply chain. Interoperability: The first column of the stack contains software applications that enable SC practitioners to exchange data between their business and enterprise partner resource planning solutions. Likewise, the provisions of this module connect ERP with business-to-business networks (such as Ariba, Basware, GTNexus, Tradeshift, Elemica, Covisint) through which SC partners exchange purchase orders, Supplier ratings, invoices and payment instructions. Finally, interoperability with block chains ensures that applications run on a distributed public or private book infrastructure. Confidentiality: With this second module, SC practitioners are able to select the data at the individual level - that they want to share with SC partners. The selected parties must be allocated special accessibility powers and an administration grants module rights, permits and revocation authority. Document: With secure interoperability and data access granted only to authorized parties, applications can now be used to dematerialize legal documents on paper, approve and tokenize them on the chain of secure recording blocks, tracking Document exchange flows and allow the transfer of ownership. Documents include receivables, debts and invoices. Chain-based applications in this module provides digital product memory and provide proof of revenue confidence for payments to a wide range of SC participants (ie SC depth) and increased levels of trust. The exchange of documents can no longer be automated between computer systems. Track / Origin: Origin of goods requires certificates and certification documents, which is why this module is based on the previous building block for the digital document. Blocking the application-based chain designed to interact with existing paper-based documents, contracts and assets (eg, letters of credit, bills of lading) is a prerequisite for tracking the origin of goods and services Assets. Authenticity / Certification: This module of the computer stack containing software-based block chain that ensures the documents and data are original, authentic and legitimate. Peer-to-peer reputation algorithms are an integral part of this component of the stack: To minimize threats to open up the community of SC, community reputation calculated through transaction peer feedback stories, help estimate peers Credibility and predict their future behavior. Identification: The software applications of this top component ensuring SC parts are really which they say they are. The software features of this module to create and manage identities by including relevant documentation, allows participants to access that identity, and allows authority participants to request identity certificates.
https://wn.com/Blockchain_In_The_Supply_Chain
Blockchain + Streaming Analytics with Ethereum and TIBCO StreamBase

Blockchain + Streaming Analytics with Ethereum and TIBCO StreamBase

  • Order:
  • Duration: 30:42
  • Updated: 09 Feb 2017
  • views: 1004
videos
This video shows why middleware and streaming analytics is relevant for any blockchain project. It discusses how to leverage stream processing and how to integrate with blockchain events. The focus was on integration of TIBCO StreamBase and Ethereum Blockchain. But the same can be done easily for any Hyperledger Blockchain like IBM's Fabric, IROHA or Intel's Sawtooth Lake, or others like R3 Corda or Ripple. For smart contract deployment, I use Browser Solidity and MetaMask. But the same can be achieved with TIBCO StreamBase (or BusinessWorks, too). The live demo can be watched on Youtube. The outlook includes some upcoming topics like - Live Visualization for Real Time Monitoring and Proactive Actions - Cross-Integration with Ethereum and Hyperledger Blockchains -Data Discovery for Historical Analysis to Find Insights and Patterns - Machine Learning to Build of Analytic Models - Application Integration with other Applications (Legacy, Cloud Services, …) - Native Hardware Integration with Internet of Things Devices Some use cases / real world examples: - Banking: Data Discovery for compliance issues, fraud or other anomalies - Stock / Energy Trading: Subcribe to events (e.g. price went over a threshold) – event correlation and proactive live UI - Manufacturing / Internet of Things: Supply chain management with various partner companies (maybe even various blockchains) - Many other use cases... Thanks to my colleague Steven Warwick for implementing the StreamBase connectors and demo! For more information about blockchain + middleware + analytics, go to https://community.tibco.com/wiki/blockchain-combination-integration-event-processing-and-analytics
https://wn.com/Blockchain_Streaming_Analytics_With_Ethereum_And_Tibco_Streambase
Factom: Adding a Data Layer to the Blockchain

Factom: Adding a Data Layer to the Blockchain

  • Order:
  • Duration: 5:04
  • Updated: 25 Mar 2015
  • views: 101
videos
Factom, in a nutshell, adds a layer of data to the blockchain mechanism that Bitcoin uses to record records of transactions: "A blockchain is a distributed mechanism to lock in data, making it immutable, verifiable and independently auditable. The Bitcoin blockchain was used to create a secure digital currency and payment system."
https://wn.com/Factom_Adding_A_Data_Layer_To_The_Blockchain
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
Apertus 0.3 Storing encrypted data on a blockchain

Apertus 0.3 Storing encrypted data on a blockchain

  • Order:
  • Duration: 3:08
  • Updated: 08 Mar 2016
  • views: 174
videos
Browse through the latest blockchain etchings at http://bitfossil.com Download the latest Apertus client at http://Apertus.io In this demonstration we are using Apertus and the Vault feature to store an encrypted message on the bitcoin testnet and then later retrieving it.
https://wn.com/Apertus_0.3_Storing_Encrypted_Data_On_A_Blockchain
ПМЭФ: Big Data, Blockchain и четвертая промышленная революция

ПМЭФ: Big Data, Blockchain и четвертая промышленная революция

  • Order:
  • Duration: 5:37
  • Updated: 03 Jun 2017
  • views: 307
videos
Репортаж Антона Цумана «Пульс города», 2 июня 2017 г.
https://wn.com/Пмэф_Big_Data,_Blockchain_И_Четвертая_Промышленная_Революция
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
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