Have you ever wanted to make a custom database? In this talk we will deep dive into how distributed databases and Blockchains make consensus. We will review how Raft and Paxos compare to Byzantine fault-tolerant systems in Blockchains such as Ethereum. You will learn how to build your own Database EVENT: GopherConSG 2018 SPEAKER: Matthew Campbell PERMISSIONS: Original video was published with the Creative Commons Attribution license (reuse allowed). CREDITS: Original video source: https://www.youtube.com/watch?v=k0-WyZCKF5I
Views: 16598 Coding Tech
PyData Berlin 2016 This talk describes BigchainDB. BigchainDB fills a gap in the decentralization ecosystem: a decentralized database, at scale. It has big-data performance levels, a querying system, and a permissioning system that supports public and private versions. It's complementary to decentralized processing platforms like Ethereum, and decentralized file systems like IPFS. BigchainDB is written in Python. This talk describes BigchainDB. BigchainDB fills a gap in the decentralization ecosystem: a decentralized database, at scale. It points to performance of 1 million writes per second throughput, storing petabytes of data, and sub-second latency. The BigchainDB design starts with a distributed database (DB), and through a set of innovations adds blockchain characteristics: decentralized control, immutability, and creation & movement of digital assets. BigchainDB inherits characteristics of modern distributed databases: linear scaling in throughput and capacity with the number of nodes, a full-featured NoSQL query language, efficient querying, and permissioning. Being built on an existing distributed DB, it also inherits enterprise-hardened code for most of its codebase. Scalable capacity means that legally binding con- tracts and certificates may be stored directly on the blockchain database. The permissioning system enables configurations ranging from private enterprise blockchain databases to open, public blockchain databases. BigchainDB is complementary to decentralized processing platforms like Ethereum, and decentralized file systems like InterPlanetary File System (IPFS). This talk describes technology perspectives that led to the BigchainDB design: traditional blockchains, distributed databases, and a case study of the domain name system (DNS). We introduce a concept called blockchain pipelining, which is key to scalability when adding blockchainlike characteristics to the distributed DB. We present a thorough description of BigchainDB, a detailed analysis of latency, and experimental results. The talk concludes with a description of use cases. Slides: https://github.com/bigchaindb/bigchaindb
Views: 11876 PyData
CityChain17 brought together Blockchain and Distributed Ledger thought leaders and entrepreneurs from across the globe. The aim was to provide the best and latest informed thinking and hype-free exploration of ideas, use cases, challenges, and concerns. The event was targeted at businesses, technologists, students, and academics with a need or desire to know more and to hear of the very best thinking in this important sector.
Views: 8401 MBN Solutions
A new era is emerging in the world of distributed computing with the growing popularity of blockchains (shared, replicated and distributed ledgers) and the associated databases as a way of integrating inter-organizational work. Originally, the concept of a distributed ledger was invented as the underlying technology of the cryptocurrency Bitcoin. But the adoption and further adaptation of it for use in the commercial or permissioned environments is what is of utmost interest to me and hence will be the focus of this keynote. Computer companies like IBM and Microsoft, and many key players in different vertical industry segments have recognized the applicability of blockchains in environments other than cryptocurrencies. IBM did some pioneering work by architecting and implementing Fabric, and then open sourcing it. Now Fabric is being enhanced via the Hyperledger Consortium as part of The Linux Foundation. A few of the other efforts include Enterprise Ethereum, R3 Corda and BigchainDB. While there is no standard in the blockchain space currently, all the ongoing efforts involve some combination of database, transaction, encryption, consensus and other distributed systems technologies. Some of the application areas in which blockchain pilots are being carried out are: smart contracts, supply chain management, know your customer, derivatives processing and provenance management. In this talk, I will survey some of the ongoing blockchain projects with respect to their architectures in general and their approaches to some specific technical areas. I will focus on how the functionality of traditional and modern data stores are being utilized or not utilized in the different blockchain projects. I will also distinguish how traditional distributed database management systems have handled replication and how blockchain systems do it. Since most of the blockchain efforts are still in a nascent state, the time is right for database and other distributed systems researchers and practitioners to get more deeply involved to focus on the numerous open problems. Speaker Bio Dr. C. Mohan has been an IBM researcher for 35 years in the database area, impacting numerous IBM and non-IBM products, the research and academic communities, and standards, especially with his invention of the ARIES family of database locking and recovery algorithms, and the Presumed Abort commit protocol. This IBM (1997), and ACM/IEEE (2002) Fellow has also served as the IBM India Chief Scientist for 3 years (2006-2009). In addition to receiving the ACM SIGMOD Innovation Award (1996), the VLDB 10 Year Best Paper Award (1999) and numerous IBM awards, Mohan was elected to the US and Indian National Academies of Engineering (2009), and was named an IBM Master Inventor (1997). This Distinguished Alumnus of IIT Madras (1977) received his PhD at the University of Texas at Austin (1981). He is an inventor of 50 patents. He is currently focused on Blockchain, Big Data and HTAP technologies (http://bit.ly/CMbcDB, http://bit.ly/CMgMDS). Since 2016, he has been a Distinguished Visiting Professor of China’s prestigious Tsinghua University. He has served on the advisory board of IEEE Spectrum, and on numerous conference and journal boards. Mohan is a frequent speaker in North America, Europe and India, and has given talks in 40 countries. He is very active on social media and has a huge network of followers. More information could be found in the Wikipedia page at http://bit.ly/CMwIkP
Views: 1396 IEEE Computer Society Silicon Valley
Speaker: Matthew Campbell Have you ever wanted to make a custom database? In this talk we will deep dive into how distributed databases and Blockchains make consensus. We will review how Raft and Paxos compare to Byzantine fault-tolerant systems in Blockchains such as Ethereum. You will learn how to build your own Database Produced by Engineers.SG
Views: 2118 Singapore Gophers
Web 3.0 is here! Welcome to the dark side of web and mobile development (in a good way). Lets talk about how we can use blockchains, distributed hash tables, and peer to peer protocols to create decentralized applications! Code for this video: https://github.com/llSourcell/Your_First_Decentralized_Application Follow me: Twitter: https://twitter.com/sirajraval Facebook: https://www.facebook.com/sirajology More learning resources: https://www.safaribooksonline.com/library/view/decentralized-applications/9781491924532/ch01.html https://github.com/DavidJohnstonCEO/DecentralizedApplications https://coinsutra.com/dapps-decentralized-applications/ https://medium.com/@mvmurthy/full-stack-hello-world-voting-ethereum-dapp-tutorial-part-1-40d2d0d807c2 https://blockgeeks.com/guides/dapps-the-decentralized-future/ https://dappsforbeginners.wordpress.com/tutorials/your-first-dapp/ https://ethereum.stackexchange.com/questions/122/how-to-create-a-dapp-from-scratch-on-ethereum https://blog.coinbase.com/app-coins-and-the-dawn-of-the-decentralized-business-model-8b8c951e734f Join us in the Wizards Slack channel: http://wizards.herokuapp.com/ And please support me on Patreon: https://www.patreon.com/user?u=3191693 Follow me: Twitter: https://twitter.com/sirajraval Facebook: https://www.facebook.com/sirajology Instagram: https://www.instagram.com/sirajraval/ Instagram: https://www.instagram.com/sirajraval/ Credits to Mahesh Murthy for the code and inspiration: http://www.zastrin.com Signup for my newsletter for exciting updates in the field of AI: https://goo.gl/FZzJ5w Hit the Join button above to sign up to become a member of my channel for access to exclusive content!
Views: 332415 Siraj Raval
Follow along with the course eBook: http://bit.ly/2W8PHvi Take the full course: https://systemsacademy.io/courses/token-economics The blockchain is a new coordination technology that relies on a decentralized network of computers in order to coordinate individual actions in a decentralized manner. We can think of token economies as a way for people to mimic the social dynamics found in certain highly social creatures like bees, ants, and termites as a way to promote and ideally achieve effective collective organization. By recording individual actions on a distributed database the blockchain makes it possible for people to coordinate themselves indirectly and collaborate on a global scale, without any centralized authority or hierarchical structure. This is something quite new in human civilization until very recently the basic premise has been that order and organization are achieved by centralized authority. https://twitter.com/systemsacademy
Views: 781 Systems Academy
Full Course On Udemy Discounted Coupon 95% OFF - https://www.udemy.com/bitcoin-ethereum-blockchain/?couponCode=YOUTUBE Like our content and want to support us more directly? Help Us, Help You! https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=6DF2Q8TR5FB3E Udemy Coupons "Here are coupons for all of my udemy courses: -Three.js [50% OFF] - https://www.udemy.com/threejs-programming/?couponCode=10ONLY -Flappy Bird SFML Clone [50% OFF] - https://www.udemy.com/flappy-bird-sfml/?couponCode=50-OFF -HTML [50% OFF] - https://www.udemy.com/html-tutorials/?couponCode=50_P_OFF -CSS [50% OFF] - https://www.udemy.com/css-course/?couponCode=CSS50POFF -Tic-Tac-Toe Cocos2d-x [50% OFF] - https://www.udemy.com/tic-tac-toe-cocos2d-x-cpp/?couponCode=TTTCC2D-50OFF -Tic-Tac-Toe SFML [50% OFF] - https://www.udemy.com/tic-tac-toe-sfml/?couponCode=SFMLTTT-50OFF -Cocos2d-x Game Development [90% OFF] - https://www.udemy.com/cocos2d-x-v3-cpp/?couponCode=90-PERCENT-OFF -A-Frame WebVR (Virtual Reality) [75% OFF] - https://www.udemy.com/a-frame-webvr/?couponCode=75_PERCENT_OFF -Modern OpenGL [80% OFF] - https://www.udemy.com/opengl-tutorials/?couponCode=10GLCODE -Bootstrap 4 [80% OFF] - https://www.udemy.com/bootstrap-web/?couponCode=80-OFF -C++ Programming [90% OFF] - https://www.udemy.com/cpp-course/?couponCode=BIG_SAVING_CPP -Ionic AngularJS [75% OFF] - https://www.udemy.com/ionic-course/?couponCode=75_OFF -Swift Programming [87.5% OFF] - https://www.udemy.com/swift-ios-mac/?couponCode=DISCOUNT_10 For all new courses feel free to ask for a coupon, enjoy. If you like this stuff, as always, show the love through comments, likes, favorites, subscriptions, etc. Thousands of free videos at www.sonarlearning.co.uk If you have any questions feel free to post them at http://www.sonarlearning.co.uk/questions.php Our Website http://www.sonarsystems.co.uk/ Facebook - https://www.facebook.com/pages/Sonar-Systems/581403125243822 Twitter - https://twitter.com/SonarSystems Google+ - https://plus.google.com/+SonarsystemsCoUk/ Donate - https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=6DF2Q8TR5FB3E Our games made using Cocos2d-x ------------------------------------------------------ iOS: https://itunes.apple.com/us/artist/sonar-systems/id672545941 Google Play: https://play.google.com/store/apps/developer?id=Sonar+Systems Check out our Cocos2d-x book to learn how to make games https://www.packtpub.com/game-development/cocos2d-x-game-development-essentials
Views: 4997 Sonar Systems
This is a very basic visual introduction to the concepts behind a blockchain. We introduce the idea of an immutable ledger using an interactive web demo. Part 2 is here: https://youtu.be/xIDL_akeras If you are interested in playing with this on your own, it is available online at: http://anders.com/blockchain/ The code that runs this demo is also on GitHub: https://github.com/anders94/blockchain-demo I'm @anders94 on Twitter and @andersbrownworth on Steemit. Donations: BTC: 1K3NvcuZzVTueHW1qhkG2Cm3viRkh2EXJp ETH: 0x84a90e21d9d02e30ddcea56d618aa75ba90331ff ETC: 0xab75ad757c89fa33b92090193a797e6700769ef8
Views: 963788 Anders Brownworth
Top 5 Technologies in 2019 : https://youtu.be/aCY1GyKVpBw Python Tutorial for Beginners: https://goo.gl/cLKYQP 5 skills for IT Professional: https://goo.gl/ba6Ui7 Top 5 technologies to learn in 2018. Technologies are : IoT (Internet of Things) Cloud Computing Blockchain Artificial Intelligence Big Data IoT : The Internet of things (IoT) is the network of physical devices, vehicles, home appliances and other items embedded with electronics, software, sensors, actuators, and network connectivity which enables these objects to connect and exchange data. The IoT allows objects to be sensed or controlled remotely across existing network infrastructure. Cloud Computing: Cloud computing enables ubiquitous access to shared pools of configurable system resources and higher-level services that can be rapidly provisioned with minimal management effort, often over the Internet. Cloud computing relies on sharing of resources to achieve coherence and economy of scale, similar to a utility. Third-party clouds enable organizations to focus on their core businesses instead of expending resources on computer infrastructure and maintenance. Cloud providers typically use a "pay-as-you-go" model. Blockchain: A blockchain is a continuously growing list of records, called blocks, which are linked and secured using cryptography which is resistant to modification of the data. Each block typically contains a hash pointer as a link to a previous block, a timestamp and transaction data. Blockchains are secure by design and are an example of a distributed computing system The first blockchain was conceptualized in 2008 by an anonymous person or group known as Satoshi Nakamoto and implemented in 2009 as a core component of bitcoin where it serves as the public ledger for all transactions. Artificial intelligence: AI is intelligence displayed by machines. In computer science, AI research is defined as the study of "intelligent agents": any device that perceives its environment and takes actions that maximize its chance of success at some goal. Colloquially, the term "artificial intelligence" is applied when a machine mimics "cognitive" functions that humans associate with other human minds, such as "learning" and "problem-solving Big Data: Big data is data sets that are so voluminous and complex that traditional data processing application software is inadequate to deal with them. Big data challenges include capturing data, data storage, data analysis, search, sharing, transfer, visualization, querying, updating and information privacy. There are three dimensions to big data known as Volume, Variety and Velocity. Editing Monitors : https://amzn.to/2RfKWgL https://amzn.to/2Q665JW https://amzn.to/2OUP21a. Editing Laptop : ASUS ROG Strix - (new version) https://amzn.to/2RhumwO Camera : https://amzn.to/2OR56AV lens : https://amzn.to/2JihtQo Mics https://amzn.to/2RlIe9F https://amzn.to/2yDkx5F Check out our website: http://www.telusko.com Follow Telusko on Twitter: https://twitter.com/navinreddy20 Follow on Facebook: Telusko: https://www.facebook.com/teluskolearnings Navin Reddy : https://www.facebook.com/navintelusko Follow Navin Reddy on Instagram: https://www.instagram.com/navinreddy20 Subscribe to our other channel: Navin Reddy : https://www.youtube.com/channel/UCxmkk8bMSOF-UBF43z-pdGQ?sub_confirmation=1 Telusko Hindi : https://www.youtube.com/channel/UCitzw4ROeTVGRRLnCPws-cw?sub_confirmation=1 You can also support us: https://goo.gl/5PB5RN
Views: 398881 Telusko
Presenter: Dr Leon Perlman Head, DFS Observatory, Columbia Business School Distributed ledger technology (DLT) is a new type of secure database or ledger for keeping track of who owns a financial, physical, or electronic asset, but without the need for a centralized controller of this data. Instead, the data is shared in a peer-to-peer manner across multiple sites, countries, or institutions A prime example of a DLT in commercial use is called ‘blockchain’ technology. It has the potential to: - Speed up and reduce the cost of transactions - Give individuals more control over their personal data - Reduce or remove the need for costly intermediaries - Provide secure ‘smart’ legal contracts that execute without user intervention - Bolster data security by providing almost real-time evidence of tampering, and - Revolutionize regulatory compliance. - This webinar is an introductory primer to all these technologies and their application in financial inclusion. It will touch on: - Their numerous strengths and weaknesses - The varied commercial and public-good applications that have been identified The implications of the disintermediation of traditional centralized controllers of data - Concerns in respect of the technology designs and their consistency - Issues in implementation and usage Security of DLTs - A sample of evolving legal and regulatory challenges and uncertainties around DLTs - Applications that may be particularly useful for financial inclusion, including remittances & identity systems, clearing and settlement, and land registration.
Views: 2214 DFS Observatory
Tutorial 1, Hot Chips 30 (2018), Sunday, August 19, 2018. Organizer: Geoffrey Burr, IBM A New Era in Distributed Computing with Blockchains and Databases Dr. C. Mohan, IBM Fellow, IBM Research–Almaden A new era is emerging in the world of distributed computing with the growing popularity of blockchains (shared, replicated and distributed ledgers) and the associated databases as a way of integrating inter-organizational work. Originally, the concept of a distributed ledger was invented as the underlying technology of the cryptocurrency Bitcoin. But the adoption and further adaptation of it for use in the commercial or permissioned environments is what is of utmost interest to me and hence will be the focus of this tutorial. Computer companies like IBM and Microsoft, and many key players in different vertical industry segments have recognized the applicability of blockchains in environments other than cryptocurrencies. IBM did some pioneering work by architecting and implementing Fabric, and then open sourcing it. Now Fabric is being enhanced via the Hyperledger Consortium as part of The Linux Foundation. A few of the other efforts include Enterprise Ethereum, R3 Corda and BigchainDB. While there is no standard in the blockchain space currently, all the ongoing efforts involve some combination of database, transaction, encryption, consensus and other distributed systems technologies. Some of the application areas in which blockchain pilots are being carried out are: smart contracts, supply chain management, know your customer, derivatives processing and provenance management. In this talk, I will survey some of the ongoing blockchain projects with respect to their architectures in general and their approaches to some specific technical areas. I will focus on how the functionality of traditional and modern data stores are being utilized or not utilized in the different blockchain projects. I will also distinguish how traditional distributed database management systems have handled replication and how blockchain systems do it. Since most of the blockchain efforts are still in a nascent state, the time is right for database and other distributed systems researchers and practitioners to get more deeply involved to focus on the numerous open problems.
Views: 485 hotchipsvideos
I wanted to demonstrate that the concept of a blockchain that powers almost all of the modern cryptocurrencies is very simple at its core. Bitcoin, Ethereum, Litecoin etc all are based on this blockchain technology. Many people think that the blockchain is a complicated thing while at it's core its just a clever use case of hashes. Enjoy guys! CODE: https://github.com/ivan-liljeqvist/SimpleBlockchain JOIN MY EXCLUSIVE MAILING LIST FOR EVEN MORE BLOCKCHAIN KNOWLEDGE: http://eepurl.com/c0hyc9 ESSENTIAL CRYPTO RESOURCES Hardware wallets: ♥ TREZOR https://trezor.io ♥ LEDGER NANO S https://www.ledgerwallet.com/r/4607 To buy cryptocurrencies: ♥ Coinbase https://www.coinbase.com/join/529bab0ab08ded7080000019 JOIN SLACK COMMUNITY http://slack-invite-ivan-on-tech.herokuapp.com https://steemit.com/@ivanli
Views: 422219 Ivan on Tech
Support the show, consider donating: 19DWzVMsCGzXjXT5xojjYdTeepSueBD2Mq (http://bit.ly/1jnTqRh) Gideon Greenspan, a computer scientist and CEO/Founder of the Israeli startup Coin Sciences, joined us for a discussion of their private blockchain platform MultiChain. Besides diving into the popular question of what's the point of a private blockchain, we covered his earlier colored coins implementation as well as his view that blockchains are best understood as a novel database paradigm. Topics covered included: - How Gideon got involved in the blockchain space - Their colored coins implementation MultiSpark and why it failed to get traction - Why he saw a market for an open-source private blockchain platform and started MultiChain - What mining diversity is and how it is used for consensus in MultiChain - How permissions work in MultiChain - The issues of privacy in blockchains and why you can't have auditability and privacy - How private blockchains differ from regular distributed databases - The five criteria to decide if a project needs a blockchain - The problem he sees with smart contract blockchains Links mentioned in this episode: - Multichain website http://bit.ly/1HAp61D - Multichain Whitepaper http://bit.ly/1MZE12a - Colored coin protocol CoinSpark http://bit.ly/1lqg390 - Avoiding the pointless blockchain project: http://bit.ly/1SsbOEP - Private blockchains are more than 'just' shared databases http://bit.ly/1ToiODm - Smart contracts: The good, the bad and the lazy http://bit.ly/1SsbTII Sponsors: - Ledger Nano: Smart card security for your Bitcoins - Get 10% off your first order when you use the code EB09 at http://ledgerwallet.com (valid until 09/30/15) - Vaultoro: Trade gold to Bitcoin instantly and securely starting at just 1mg at http://vaultoro.com - Hide.me: Protect your privacy and personal data with a free VPN account at Hide.me/epicenter Show notes: http://epicenterbitcoin.com/podcast/107 SoundCloud: http://soundcloud.com/epicenterbitcoin/eb-107 Epicenter Bitcoin is hosted by Brian Fabian Crain, Sébastien Couture & Meher Roy. - Visit our website: http://epicenterbitcoin.com - Subscribe to our newsletter: http://epicenterbitcoin.com/newsletter - Twitter: http://twitter.com/epicenterbtc
Views: 2939 Epicenter Podcast
What is a blockchain and how do they work? I'll explain why blockchains are so special in simple and plain English! 💰 Want to buy Bitcoin or Ethereum? Buy for $100 and get $10 free (through my affiliate link): https://www.coinbase.com/join/59284524822a3d0b19e11134 📚 Sources can be found on my website: https://www.savjee.be/videos/simply-explained/how-does-a-blockchain-work/ 🐦 Follow me on Twitter: https://twitter.com/savjee ✏️ Check out my blog: https://www.savjee.be ✉️ Subscribe to newsletter: https://goo.gl/nueDfz 👍🏻 Like my Facebook page: https://www.facebook.com/savjee
Views: 2929736 Simply Explained - Savjee
Until recently, developers have had to deal with some serious tradeoffs when picking a database technology. One could pick a SQL database and deal with their eventual scaling problems or pick a NoSQL database and have to work around their lack of transactions, strong consistency, and/or secondary indexes. However, a new class of distributed database engines is emerging that combines the transactional consistency guarantees of traditional relational databases with the horizontal scalability and high availability of popular NoSQL databases. In this talk, we'll examine the history of databases to see how we got here, covering the motivations for this new class of systems and why developers should care about them. We'll then take a deep dive into the key design choices behind one open source distributed SQL database, CockroachDB, that enable it to offer such properties and compare them to past SQL and NoSQL designs. We will look specifically at how to achieve the easy deployment and management of a scalable, self-healing, strongly-consistent database with techniques such as dynamic sharding and rebalancing, consensus protocols, lock-free transactions, and more. Alex Robinson COCKROACH LABS Alex Robinson is a member of the technical staff at Cockroach Labs, the startup leading the development of the fully open source (Apache-licensed) CockroachDB project. Previously, he was a senior software engineer at Google, where he spent his last two years as a core developer of both Kubernetes and Container Engine. Prior to that, he worked on Google's cloud logging and monitoring infrastructure and improved the efficiency of privacy checks at Facebook.
Views: 7268 Strange Loop
The Hashgraph is a protocol that provides a distributed consensus ledger. It allows community users to generate transactions, and agree on the order in which they did the transactions, in an environment where everyone trusts no single user. Blockchain distributed data structure that enables identifying and tracking transactions digitally and sharing this information across a the network, creating in a sense a distributed trust network. The distributed ledger technology offered by blockchain provides a transparent and secure means for tracking the ownership and transfer of assets. ================================================= 💰Get a Coinbase Wallet! - https://www.coinbase.com/join/5a4bf25... Sign up! 💰Get a Binance Wallet! - https://www.binance.com/?ref=21867060 Sign up! =================================================== ★ Any donation is highly appreciated. 🔑 BTC Wallet Address: 16EtKHG2rwH2NqA4MniK4JRhzPyv5AeiER 🔑 ETH Wallet Address: 0x1db0fa9a379e46cb205a39a0766e30d3e3d0d11e 🔑 LTC Wallet Address: LRcmBavhskBURqmw1sujV5LS8WUPvfaNj8 =================================================== ➤ How to Invest In Crypto: https://www.youtube.com/watch?v=M4Nlj-y9utI ➤Top Richest in Crypto: https://www.youtube.com/watch?v=Q2kT6ypgoVY ➤ Cool Facts About Bitcoin: https://www.youtube.com/watch?v=iOPn4f6OeyY ==================================================== Thank you so much for watching! ==================================================== Hashgraph | blockchain | hashgraph vs blockchain | Bitcoin | Cryptocurrency
Views: 10800 Aimstone
Blockchain explained in plain English Understanding how blockchain works and identifying myths about its powers are the first steps to developing blockchain technologies. Blockchain is an algorithm and distributed data structure for managing electronic cash without a central administrator among people who know nothing about one another. Originally designed for the crypto-currency Bitcoin, the blockchain architecture was driven by a radical rejection of at (government-guaranteed) money and bank-controlled payments. Blockchain is a special instance of Distributed Ledger Technologies (DLTs), almost all of which have emerged in Bitcoin's wake. HOW DOES BLOCKCHAIN WORK? Blockchain is a Distributed Ledger Technology (DLT) that was invented to support the Bitcoin cryptocurrency. Bitcoin was motivated by an extreme rejection of government-guaranteed money and bank-controlled payments. The developer of Bitcoin, Satoshi Nakamoto envisioned people spending money without friction, intermediaries, regulation or the need to know or trust other parties. Technically, the original blockchain is separable from Bitcoin, but this report will show that the blockchain design is so specific to Bitcoin that it's not a good fit for much else. The central problem in electronic cash is Double Spend. Because pure electronic money is just data, nothing stops a currency holder from trying to spend it twice. Blockchain solves the Double Spend problem without a digital reserve fund or similar form of umpire. Blockchain monitors and verifies Bitcoin transactions by calling upon a decentralized network of volunteer-run nodes to, in effect, vote on the order in which transactions occur. The network's algorithm ensures that each transaction is unique. Video created by the Centre of International Governance Innovation.
Views: 694639 Lucas Mostazo
✪✪✪✪✪ WORK FROM HOME! Looking for WORKERS for simple Internet data entry JOBS. $15-20 per hour. SIGN UP here - http://jobs.theaudiopedia.com ✪✪✪✪✪ ✪✪✪✪✪ The Audiopedia Android application, INSTALL NOW - https://play.google.com/store/apps/details?id=com.wTheAudiopedia_8069473 ✪✪✪✪✪ What is DISTRIBUTED DATABASE? What does DISTRIBUTED DATABASE mean? DISTRIBUTED DATABASE meaning - DISTRIBUTED DATABASE definition - DISTRIBUTED DATABASE explanation. Source: Wikipedia.org article, adapted under https://creativecommons.org/licenses/by-sa/3.0/ license. A distributed database is a database in which storage devices are not all attached to a common processing unit such as the CPU, and which is controlled by a distributed database management system (together sometimes called a distributed database system). It may be stored in multiple computers, located in the same physical location; or may be dispersed over a network of interconnected computers. Unlike parallel systems, in which the processors are tightly coupled and constitute a single database system, a distributed database system consists of loosely coupled sites that share no physical components. System administrators can distribute collections of data (e.g. in a database) across multiple physical locations. A distributed database can reside on network servers on the Internet, on corporate intranets or extranets, or on other company networks. Because they store data across multiple computers, distributed databases can improve performance at end-user worksites by allowing transactions to be processed on many machines, instead of being limited to one. Two processes ensure that the distributed databases remain up-to-date and current: replication and duplication. 1. Replication involves using specialized software that looks for changes in the distributive database. Once the changes have been identified, the replication process makes all the databases look the same. The replication process can be complex and time-consuming depending on the size and number of the distributed databases. This process can also require a lot of time and computer resources. 2. Duplication, on the other hand, has less complexity. It basically identifies one database as a master and then duplicates that database. The duplication process is normally done at a set time after hours. This is to ensure that each distributed location has the same data. In the duplication process, users may change only the master database. This ensures that local data will not be overwritten. Both replication and duplication can keep the data current in all distributive locations. Besides distributed database replication and fragmentation, there are many other distributed database design technologies. For example, local autonomy, synchronous and asynchronous distributed database technologies. These technologies' implementations can and do depend on the needs of the business and the sensitivity/confidentiality of the data stored in the database, and the price the business is willing to spend on ensuring data security, consistency and integrity. When discussing access to distributed databases, Microsoft favors the term distributed query, which it defines in protocol-specific manner as "ny SELECT, INSERT, UPDATE, or DELETE statement that references tables and rowsets from one or more external OLE DB data sources". Oracle provides a more language-centric view in which distributed queries and distributed transactions form part of distributed SQL. Today the distributed DBMS market is evolving dramatically, with new, innovative entrants and incumbents supporting the growing use of unstructured data and NoSQL DBMS engines, as well as XML databases and NewSQL databases. These databases are increasingly supporting distributed database architecture that provides high availability and fault tolerance through replication and scale out ability. Some examples are Aerospike, Cassandra, Clusterpoint, ClustrixDB, Couchbase, Druid (open-source data store), FoundationDB, NuoDB, Riak and OrientDB. The blockchain technology popularised by bitcoin is an implementation of a distributed database.
Views: 9776 The Audiopedia
Oracle ACE Director Heli Helskyaho provides technical detail and background on the sessions she will present at Oracle Code One and at Oracle OpenWorld, Oct 22-25, 2018 in San Francisco. Code One Sessions: - Evaluation of Machine Learning in R and Python and In-Database Machine Learning [DEV4736] with Brendan Tierney, Oralytics Thurs, Oct 25, 9:00am - 9:45am | Moscone West - Room 2018 - Tracking Spare Parts with Blockchain [DEV5123] with Sonja Meyer (Oracle) and Jens Lusebrink (Oracle) Thurs, Oct 25, 2:00pm - 2:45pm | Moscone West - Room 2005 OpenWorld Sessions: Do We Still Need to Design Databases? [TRN1743] Mon, Oct 22, 3:45pm - 4:30pm | Moscone West - Room 3002 https://developer.oracle.com/ https://cloud.oracle.com/en_US/tryit
Views: 142 Oracle Developers
YOcoin based on the Ethereum Blockchain is Bitcoin 2.0 This is the Future of Cryptocurrency... Sign up and purchase YOcoin at the secure link below. www.YOcoinEX.org or www.YOcoinUSA.org Feel free to ask any questions Learn more at www.YOcoin.org Facebook- www.Facebook.com/YOcoinUSA/ Instagram- www.Instagram.com/YOcoinUSA/ Twitter- www.Twitter.com/YOcoinUSA
Views: 542004 YOcoin
Bitcoin is one of the most significant innovations of our time because of trust. The client-server model is a trusted relationship: remote server to access data. In finance, we call it counterparty risk. In economics, we call it the central planning problem. In computer science, we call it the Byzantine General's Problem. Bitcoin is an immutable, distributed database; everyone keeps a copy of the database; can verify proofs against that database. The value reflects our trust: "The currency price of the markets reflects how trustworthy that asset is." The reason this works: +block chain data structure +economic incentive for security +non-forgeable proof of work Delivered by Eric Martindale: Bitcoin maximalist, relentless maker @Blockstream, & visioneer for @MadeWithMaki. Previously, Open Source Strategy at @BitPay, CTO at @coursefork, many more. Article: https://opensource.com/article/16/11/bitcoin-5-minutes
Views: 3646 Opensource.com
Blockchain has made significant strides in the financial and healthcare sectors offering a new perspective and platform for data management, distribution, and verification in this global data-sharing economy. This webinar will address the potential applications for blockchain applications within the clinical trials process. The IEEE Standards Association (IEEE-SA) is a leading consensus building organization that nurtures, develops and advances global technologies, through IEEE. We bring together a broad range of individuals and organizations from a wide range of technical and geographic points of origin to facilitate standards development and standards related collaboration. With collaborative thought leaders in more than 160 countries, we promote innovation, enable the creation and expansion of international markets and help protect health and public safety. Collectively, our work drives the functionality, capabilities and interoperability of a wide range of products and services that transform the way people live, work and communicate. Visit IEEE-SA Website: http://standards.ieee.org/
Views: 951 IEEE Standards Association
The Sumatra project provides the 92 million members of Indonesia’s largest Muslim organization, Nahdlatul Ulama, with a digital ballot box on their mobile phones. 🤝🏿 http://bit.ly/PLEASE-Subscribe 🤝 Reddit ➡️ http://bit.ly/DccReddit Telegram ➡️ http://bit.ly/TelegramDCC 🤝🏿 Please comment, like & subscribe! 🤝🏿 Thos allows them to vote on key decisions affecting their community, such as electing leaders, allocating funds and deciding on community projects. Facebook ➡️ http://bit.ly/DccFacebook Medium ➡️ http://bit.ly/DccMedium Twitter ➡️ http://bit.ly/DccTwitter Melbourne-based startup Horizon State, which was recently named one of the World Economic Forum’s Tech Pioneers, announced in July a project to roll out a community voter platform built on blockchain technology in the island of Sumatra which it hopes to scale-up for regional and national government elections in Indonesia. In this particular use case, blockchain technology promises to provide trust in the electoral process itself as well as very low cost ways of verifying that these votes took place. “We’re in interesting dialogue at the moment with national and regional governments, which are interested in the future to use of the technology in regional and national government elections in the region,” Horizon State CEO Oren Alazraki told ABC. Adapted from fintechnews.sg #FintechSingapore ⬇️ Connect with #DCC🤝🏿 ⬇️ * Reddit ➡️ http://bit.ly/DccReddit * Telegram ➡️ http://bit.ly/TelegramDCC * Facebook ➡️ http://bit.ly/DccFacebook * Instagram ➡️ http://bit.ly/DccInstagram * Medium ➡️ http://bit.ly/DccMedium * Twitter ➡️ http://bit.ly/DccTwitter BLOCKCHAIN/BITCOIN INDONESIA Indonesia Warms up to Blockchain http://fintechnews.sg/25313/blockchain/blockchain-indonesia/ Blockchain Voting Indonesia #BlockchainVoting ℹ️ Distributed Credit Chain ℹ️ https://www.dcc.finance #blockchain infrastructure behind credit data exchange. World’s 1st #distributed #banking public chain with a goal to establish a #decentralized ecosystem for #financial service providers around the world. By empowering #credit with blockchain technology and returning ownership of data to individuals, DCC’s mission is to transform #fintech scenarios and realize true inclusive #finance. ℹ️ China Blockchain Application Center ℹ️ https://cbacnyc.org The China Blockchain Application Center launched the NYC branch on August 23, 2018, led by executive director Stewie Zhu, Founder and CEO of Distributed Credit Chain. The China Blockchain Application Center (CBAC) NYC is a public welfare and non-profit institution backed by the government with a goal to commonly promote industry certification and blockchain industry standards. Established in 2015, it is backed by the Beijing Municipal Bureau of Financial Work which was founded by the Museum of Fintech and leading institutions in the blockchain area. ℹ️ #CBAC ℹ️ 575 5th Avenue, 14th Floor, New York, NY 10017 "To promote the exchange of information between global blockchain authorities and relevant counterparties in China & cooperate with supervising institutions in the promotion of common standards of training certifications and worldwide development of the industry." STEWIE ZHU EXECUTIVE DIRECTOR Founder and CEO of Distributed Credit Chain HENRY CAO EXECUTIVE DIRECTOR Founder of Usechain Professor at CKGSB FRANKLIN SONG DIRECTOR Co-founder of DATA Bo Dong DIRECTOR Founder of Altonomy
Views: 247 Distributed Credit Chain
What is DISTRIBUTED LEDGER? What does DISTRIBUTED LEDGER mean? DISTRIBUTED LEDGER meaning - DISTRIBUTED LEDGER definition - DISTRIBUTED LEDGER explanation. SUBSCRIBE to our Google Earth flights channel - https://www.youtube.com/channel/UC6UuCPh7GrXznZi0Hz2YQnQ Source: Wikipedia.org article, adapted under https://creativecommons.org/licenses/by-sa/3.0/ license. A distributed ledger (also called a shared ledger, or referred to as distributed ledger technology) is a consensus of replicated, shared, and synchronized digital data geographically spread across multiple sites, countries, or institutions. There is no central administrator or centralized data storage. A peer-to-peer network is required as well as consensus algorithms to ensure replication across nodes is undertaken. One form of distributed ledger design is the blockchain system, which can be either public or private. But not all distributed ledgers have to necessarily employ a chain of blocks to successfully provide secure and valid achievement of distributed consensus: a blockchain is only one type of data structure considered to be a distributed ledger. In 2016, numerous banks tested distributed ledgers for international payments. Incumbent banks are investing heavily in distributed ledgers as a cost-saving measure and a way to reduce operational risks. The future use of distributed ledgers is expected to monetize the Internet of things in a programmable economy.
Views: 1137 The Audiopedia
In a follow-up to one of our most popular podcast episodes which originally aired in April 2017 (https://a16z.com/2017/04/03/cryptocurrencies-protocols-appcoins/), a16z Crypto Fund General Partner Chris Dixon returns to talk with Olaf Carlson-Wee of Polychain Capital in a free-wheeling conversation about the seven major trends they see happening in blockchain computing now as we shift from basic protocol design to pragmatic product launches: - Improving developer productivity - Scaling out versus scaling up - On-chain governance - Proof of Stake Networks, and especially their resilience to attacks - 2017: year of of fund raising, 2019: year of launches - Autonomous and re-mixable code - Killer apps: distributed finance and beyond **** The views expressed here are those of the individual AH Capital Management, L.L.C. (“a16z”) personnel quoted and are not the views of a16z or its affiliates. Certain information contained in here has been obtained from third-party sources, including from portfolio companies of funds managed by a16z. While taken from sources believed to be reliable, a16z has not independently verified such information and makes no representations about the enduring accuracy of the information or its appropriateness for a given situation. This content is provided for informational purposes only, and should not be relied upon as legal, business, investment, or tax advice. You should consult your own advisers as to those matters. References to any securities or digital assets are for illustrative purposes only, and do not constitute an investment recommendation or offer to provide investment advisory services. Furthermore, this content is not directed at nor intended for use by any investors or prospective investors, and may not under any circumstances be relied upon when making a decision to invest in any fund managed by a16z. (An offering to invest in an a16z fund will be made only by the private placement memorandum, subscription agreement, and other relevant documentation of any such fund and should be read in their entirety.) Any investments or portfolio companies mentioned, referred to, or described are not representative of all investments in vehicles managed by a16z, and there can be no assurance that the investments will be profitable or that other investments made in the future will have similar characteristics or results. A list of investments made by funds managed by Andreessen Horowitz (excluding investments and certain publicly traded cryptocurrencies/ digital assets for which the issuer has not provided permission for a16z to disclose publicly) is available at https://a16z.com/investments/. Charts and graphs provided within are for informational purposes solely and should not be relied upon when making any investment decision. Past performance is not indicative of future results. The content speaks only as of the date indicated. Any projections, estimates, forecasts, targets, prospects, and/or opinions expressed in these materials are subject to change without notice and may differ or be contrary to opinions expressed by others. Please see https://a16z.com/disclosures for additional important information.
Views: 5547 a16z
In a previous video (https://youtu.be/13QLbaxWXmA), a16z crypto Deal Partner Ali Yahya described five open problems for building the blockchain computer. One of those problems is building a decentralized storage network. In this video, we double-click on decentralized storage networks and explore some of the cutting edge computer science techniques we'll need to make these storage networks a reality. a16z crypto Deal Partner Ali Yahya talks with Stanford Ph.D. student Ben Fisch about how to create a reliable decentralized storage network with new protocols and the right economic incentives to entice people around the world to offer up some of their idle free storage space to developers who need that space. Specifically, they explore the following questions: - How do we design a peer-to-peer storage system where people around the Internet offer to store files for us? - How can we make sure this decentralized system performs well, doesn’t lose files, is trusted, and provides the right economic incentives to storage providers to participate in this system - What benefits would a peer-to-peer system have over centralized systems (such as being more censorship resistance, broader participation in providing or verifying storage)? - What computer science protocol work is needed to enable this type of network, such as proof of retrievability, proof of replication, proof of storage? Show notes: Ali mentions Bruce Schneir's description of four mechanisms for trust, which you can read more about here: Bruce Schneier’s four mechanisms for trust: https://www.schneier.com/blog/archives/2012/03/liars_and_outli_5.html *** The views expressed here are those of the individual AH Capital Management, L.L.C. (“a16z”) personnel quoted and are not the views of a16z or its affiliates. Certain information contained in here has been obtained from third-party sources, including from portfolio companies of funds managed by a16z. While taken from sources believed to be reliable, a16z has not independently verified such information and makes no representations about the enduring accuracy of the information or its appropriateness for a given situation. This content is provided for informational purposes only, and should not be relied upon as legal, business, investment, or tax advice. You should consult your own advisers as to those matters. References to any securities or digital assets are for illustrative purposes only, and do not constitute an investment recommendation or offer to provide investment advisory services. Furthermore, this content is not directed at nor intended for use by any investors or prospective investors, and may not under any circumstances be relied upon when making a decision to invest in any fund managed by a16z. (An offering to invest in an a16z fund will be made only by the private placement memorandum, subscription agreement, and other relevant documentation of any such fund and should be read in their entirety.) Any investments or portfolio companies mentioned, referred to, or described are not representative of all investments in vehicles managed by a16z, and there can be no assurance that the investments will be profitable or that other investments made in the future will have similar characteristics or results. A list of investments made by funds managed by Andreessen Horowitz (excluding investments and certain publicly traded cryptocurrencies/ digital assets for which the issuer has not provided permission for a16z to disclose publicly) is available at https://a16z.com/investments/. Charts and graphs provided within are for informational purposes solely and should not be relied upon when making any investment decision. Past performance is not indicative of future results. The content speaks only as of the date indicated. Any projections, estimates, forecasts, targets, prospects, and/or opinions expressed in these materials are subject to change without notice and may differ or be contrary to opinions expressed by others. Please see https://a16z.com/disclosures for additional important information.
Views: 1994 a16z
At Global Architecture Week 2015, we covered ‘Digital Currencies and Cash’ and their relevance to Tax and Welfare Authorities, concluding with the message: “It’s not about Bitcoin, it’s about the Blockchain”. Blockchain technology has the potential to enable a new mutually trusted, transparent way of sharing and transacting. In the UK Public Sector, Sir Mark Walport’s report Distributed Ledger Technology: Beyond Blockchain encouraged Government to assess its early use and potential. Meanwhile in the private sector, Blockchain FinTech excitement among start-ups and venture capitalists remained strong for a technology promised to be “like a whole new internet for value exchange”. But where are the real world use cases today? What is it that makes a use case more likely to succeed? In this talk, Nick Meyne, Enterprise Architect, Capgemini shares and discusses a number of Capgemini examples. Filmed at Capgemini Week of Innovation Networks 2016 in Telford, UK.
Views: 136998 Capgemini
Subscribe to my youtube channel: https://goo.gl/hts9Rf
Views: 655 Technology Team
Every distributed storage system makes tradeoffs between performance, resource usage, consistency, and availability to meet its environment or design goals. However, when faced with new environments or workloads, these tradeoffs change --- requiring new systems to be built or existing ones to be modified. Unfortunately, new systems often take a lot of development time and modifying an existing system is no easy feat. I present a new approach that greatly simplifies the development of new storage systems. The approach is based on the fundamental insight that given a set of basic replication mechanisms, the design of data storage systems can be separated into the definition of how data and updates are routed among nodes and the definition of when it is safe to access data. This approach is realized by the PADS policy architecture. With PADS, a designer implements a distributed storage system by specifying routing policy and blocking policy. This talk presents the approach, details of PADS, and how PADS has been used build a dozen systems covering a large part of the design space. Each of these systems required only a few weeks of development time and could be modified to adapt to new goals with little effort.
Views: 2277 Microsoft Research
Exclusive #BlockchainBrad update with Cyber Physical Chain's Overseas Operation Director, Wayne. CPChain is a new distributed infrastructure for next generation IoT. The core feature of the CPChain is to realize the transmission of the value of cyber-physical systems. CPChain’s main technological innovation is to propose a systematic scheme to address the scalability and real-time problems of blockchain technology in IoTs from the perspective of data storage and computation, and consensus protocols, including parallel distributed architecture, two-layer hybrid consensus mechanism and lightweight side chain consensus protocol. ●▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬● Timestamps: 0:06 Intro 0:45 CPChain Overview 2:00 Dev Focus 4:02 Media / Marketing 5:32 Leadership 8:50 Runway 10:30 Design / Tech Update 15:10 Rnodes / Staking 22:00 Partnership / Revenue Traction 25:10 Chinese Government Approach 32:25 Token Price 34:20 Exchanges 42:10 Runway 44:01 Delivery / Revenue 49:06 Investors Support 52:10 Wrap-up ●▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬● INVESTMENT DISCLOSURE: I have invested in this startup. This is not Financial Advice. #DYOR always. ●▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬● PAYMENT/DONATION DISCLOSURE: This was 100% free and I did this video with no compensation and no intention to get anything from the CPChain Team for doing this video; not in fiat, tokens or any form on payment. They mentioned they may donate sometime to my channel and if they do I will let you know, but this was done entirely for free. Since several months ago, I decided to do only free content unless legitimate LONGTERM ambassadorships were involved. I believe that sponsored content is not a problem if disclosed, but this was NOT sponsored and there was absolutely no compensation received in any way, shape or form for this interview that I receive. This is not Financial Advice. Please #DYOR ●▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬● GENERAL DISCLAIMER: The information provided is not to be considered as a recommendation to buy or invest in certain assets or currencies and is provided solely as an educational and information resource to help traders make their own decisions. Past performance is no guarantee of future success. It is important to note that no system or methodology has ever been developed that can guarantee profits or ensure freedom from losses. No representation or implication is being made that using the attached material will guarantee profits or ensures freedom from losses. BlockchainBrad shall not be liable to the participant for any damages, claims, expenses or losses of any kind (whether direct or indirect) suffered by the participant arising fRom or in connection with the information obtained this website or directly from the website owner. #CPChain #CyperPhysicalChain #IoT #BCB #blockchainbrad
Views: 438 BlockchainBrad
This is part 21 of the Blockchain tutorial explaining what a peer-to-peer network is and what propagation and latency means. These words are often used in the Blockchain ecosystem and for non-technical people it may be helpful to understand the meaning of these words. In this video series different topics will be explained which will help you to understand blockchain. Bitcoin released as open source software in 2009 is a cryptocurrency invented by Satoshi Nakamoto (unidentified person or group of persons). After the introduction of Bitcoin many Bitcoin alternatives were created. These alternate cryptocurrencies are called Altcoins (Litecoin, Dodgecoin etc). Bitcoin's underlying technology is called Blockchain. The Blockchain is a distributed decentralized incorruptible database (ledger) that records blocks of digital information. Each block contains a timestamp and a link to a previous block. Soon people realises that there many other use cases where the Blockchain technology can be applied and not just as a cryptocurrency application. New Blockchain platforms were created based on the Blockchain technology, one of which is called Ethereum. Ethereum focuses on running programming code, called smart contracts, on any decentralized application. Using the new Blockchain platforms, Blockchain technology can be used in supply chain management, healthcare, real estate, identity management, voting, internet of things, etcetera, just to name a few. Today there is a growing interest in Blockchain not only in the financial sector but also in other sectors. Explaining how Blockchain works is not easy and for many the Blockchain technology remains an elusive concept. This video series tries to explain Blockchain to a large audience but from the bottom up. Keywords often used in Blockchain conversation will be explained. Each Blockchain video is short and to the point. It is recommended to watch each video sequentially as I may refer to certain Blockchain topics explained earlier. Mobilefish.com http://www.mobilefish.com Global Bitcoin Nodes Distribution https://bitnodes.21.co Check out all my other Blockchain tutorial videos https://goo.gl/aMTFHU Subscribe to my YouTube channel https://goo.gl/61NFzK The presentation used in this video tutorial can be found at: http://www.mobilefish.com/developer/blockchain/blockchain_quickguide_tutorial.html #mobilefish #blockchain #bitcoin #cryptocurrency #ethereum
Views: 8972 Mobilefish.com
The blockchain is a fairly simple data structure. In this video I introduce the bitcoin blockchain, and explain everything you need to know about it to understand blockchain consensus. As a bonus I explain how Merkle trees are used to save disk space. The next video in this series will cover the consensus algorithm itself. This is a lecture from the Distributed Systems class. See www.distributedsystemscourse.com for more information.
Views: 480 Distributed Systems Course
Blockchain is a distributed database that maintains a continuously growing list of records, called blocks, secured from tempering and revision. Each block contains a timestamp and a link to a previous block. By design, blockchains are inherently resistant to modification of the data-- once recorded, the data in a block cannot be altered retroactively. To know more about Blockchain Tutorials or to take a free demo session you can contact us at: Email: contact @maxmunus.com Ph: +91 80-41103383 www.maxmunus.com
Views: 114 MaxMunus Training
https://en.wikipedia.org/wiki/Blockchain A blockchain, originally block chain, is a growing list of records, called blocks, which are linked using cryptography. Each block contains a cryptographic hash of the previous block, a timestamp, and transaction data (generally represented as a merkle tree root hash). https://www.coinbase.com/join/5a4de1e35628d9012785bfe5 www.binance.com/?ref=18759635 By design, a blockchain is resistant to modification of the data. It is "an open, distributed ledger that can record transactions between two parties efficiently and in a verifiable and permanent way". For use as a distributed ledger, a blockchain is typically managed by a peer-to-peer network collectively adhering to a protocol for inter-node communication and validating new blocks. Once recorded, the data in any given block cannot be altered retroactively without alteration of all subsequent blocks, which requires consensus of the network majority. Although blockchain records are not unalterable, blockchains may be considered secure by design and exemplify a distributed computing system with high Byzantine fault tolerance. Decentralized consensus has therefore been claimed with a blockchain. Blockchain was invented by a person using the name Satoshi Nakamoto in 2008 to serve as the public transaction ledger of the cryptocurrency bitcoin. The identity of Satoshi Nakamoto is unknown. The invention of the blockchain for bitcoin made it the first digital currency to solve the double-spending problem without the need of a trusted authority or central server. The bitcoin design has inspired other applications, and blockchains which are readable by the public are widely used by cryptocurrencies. Blockchain is considered a type of payment rail. Private blockchains have been proposed for business use. Sources such as the Computerworld called the marketing of such blockchains without a proper security model "snake oil".
Views: 5 Crypto Currency News
We love Blockchain, and we know everything there is to know about it! Subscribe to our channel for even more information, news, analytics, facts and expert opinions on new financial and technological innovations. The Cointelegraph welcomes you. https://www.youtube.com/user/cointelegraph https://cointelegraph.com/ https://telegram.me/thecointelegraph https://www.facebook.com/cointelegraph https://twitter.com/cointelegraph https://soundcloud.com/cointelegraph/ A blockchain – originally block chain – is a continuously growing list of records, called blocks, which are linked and secured using cryptography. Each block contains typically a hash pointer as a link to a previous block, a timestamp and transaction data. By design, blockchains are inherently resistant to modification of the data. Functionally, a blockchain can serve as "an open, distributed ledger that can record transactions between two parties efficiently and in a verifiable and permanent way." For use as a distributed ledger a blockchain is typically managed by a peer-to-peer network collectively adhering to a protocol for validating new blocks. Once recorded, the data in any given block cannot be altered retroactively without the alteration of all subsequent blocks and a collusion of the network majority.
Views: 12540 Cointelegraph
- Join us - Telegram: https://t.me/CyberVein Twitter: https://twitter.com/cyberveingroup Whitepaper: https://www.cybervein.org/whitepaper Website: https://www.cybervein.org - Read more - WHITEPAPER https://www.cybervein.org/whitepaper HOW CYBERVEIN MODIFIES DAG TO REVOLUTIONIZE DECENTRALIZED DATABASES https://www.cybervein.org/post/interconnecting-the-data-that-runs-the- world-how-and-why-cybervein-puts-entire-databases-on-the-blockchain SOLVING THE COLLABORATION PARADOX IN SCIENCE WITH DECENTRALIZED DATABASES https://www.cybervein.org/post/solving-the-collaboration- paradox-in-science-with-decentralized-databases PROJECT OVERVIEW https://www.cybervein.org/post/interconnecting-the-data-that-runs-the- world-how-and-why-cybervein-puts-entire-databases-on-the-blockchain CYBERVEIN FOR SMART CITIES https://www.cybervein.org/post/to-make-smart-cities- secure-and-efficient-blockchains-need-to-evolve BEYOND SUPPLY CHAINS - HOW DECENTRALIZED DATABASES CAN REVOLUTIONIZE JUST-IN-TIME PRODUCTION https://www.cybervein.org/post/beyond-supply-chains-how-decentralized- databases-can-revolutionize-just-in-time-production - About CyberVein - The CyberVein network is the first Distributed Ledger System allowing for the decentralized management of complex databases on the blockchain itself, without requiring centralized storage providers. This novel implementation of blockchain technology is only possible thanks to improvements to DAG ledger design developed by CyberVein. Just as the Internet is a public network of networks, CyberVein is a public network of immutable databases, on which information can easily be traded, interconnected, and transformed into structured knowledge. Why do we need decentralised databases? Maintaining databases with qualities that are normally attributed to blockchains -meaning immutability, security, and transparency - makes enormous sense in a variety of industry, research and governance use cases. Players in the global market often need to share information and rely on data they pool and maintain collectively. Supply chain management is one obvious scenario, but there are many more. This can be very problematic if these players have good reasons not to trust each other. Immutable, decentralized databases solve this gracefully. For academia, research and the public sector, use cases are virtually limitless. Scientific processes such as peer review can be revolutionized in the truest sense of the word, while making collaborative research much more efficient. Smart governments and smart cities rely on the collection of vast amounts of data generated by the public, providing city administrators with enormous power and knowledge which aren’t necessarily shared with the public. CyberVein allows this data to be stored in public, decentralized databases, protecting it from malevolent manipulation as well as from attacks, while providing an immutable record of how said data is processed and used. What is CyberVein’s Larger Vision? CyberVein’s eventual goal is to create a universal “Internet of Data”, inter-connecting databases of entire industries, and hence increasing the overall value and connectivity of human knowledge. CyberVein databases are equipped with innate monetization functions, allowing owners of data to define its value. With this, CyberVein incentivises the sharing and trading of data - even among competing entities or organizations that otherwise wouldn’t have the budget to maintain large data sets in the public domain. Technological Innovation Traditional blockchains are not designed to store vast amounts of structured data, especially if this data is being constantly processed by many participants in parallel. In order to build a network of decentralized databases, CyberVein has reinvented fundamental blockchain principles, transforming distributed ledgers into a powerful data management network. To optimize DAG ledgers for the handling of databases, CyberVein improves on Directed Acyclic Graph architectures by introducing a resource conserving consensus algorithm, as well as a smart contracting language and virtual machine, optimised for the management of massive amounts of data.
Views: 6421 CyberVein English
This talk was given at a local TEDx event, produced independently of the TED Conferences. Tech entrepreneur and mathematician Charles Hoskinson says Bitcoin-related technology is about to revolutionise property rights, banking, remote education, private law and crowd-funding for the developing world. Charles Hoskinson is Chief Executive Officer at Thanatos Holdings, Director at The Bitcoin Education Project, and President at the Hoskinson Content Group LLC. Charles is a Colorado based technology entrepreneur and mathematician. He attended University of Colorado, Boulder to study analytic number theory in graduate school before moving into cryptography and social network theory. His professional experience includes work with NoSQL and Bigdata using MongoDB and Hadoop for several data mining projects involving crowdsource research and also development of web spiders. He is the author of several white papers on the design and deployment of low bandwidth prolog based semantical web scraping bots as well as analysis of metamorphic computer viruses through a case study on Zmist. His current projects focus on evangelism and education for Bitcoin and fully homomorphic encryption schemes. About TEDx, x = independently organized event In the spirit of ideas worth spreading, TEDx is a program of local, self-organized events that bring people together to share a TED-like experience. At a TEDx event, TEDTalks video and live speakers combine to spark deep discussion and connection in a small group. These local, self-organized events are branded TEDx, where x = independently organized TED event. The TED Conference provides general guidance for the TEDx program, but individual TEDx events are self-organized.* (*Subject to certain rules and regulations)
Views: 320427 TEDx Talks
Decentralized networks operate without relying on a central source of truth, and instead rely on group coordination in order to establish a shared state. Trust is distributed among participants, so to have confidence that each participant is telling the truth, there must be a mechanism for guaranteeing that participants have not accidentally corrupted or intentionally tampered with the system’s state. Enter the Merkle tree, a data structure that was patented in 1979, and because of its unique content validating and performance qualities, has since become the backbone of decentralized software like Git, BitTorrent, ZFS, and Ethereum. Tara helps build Beaker, a browser for the peer-to-peer Web. She’s enthusiastic about decentralizing the Web, and thinks that peer-to-peer protocols will reinvigorate the creativity of the Web’s early days. EVENT: !!Con 2017 SPEAKER: Tara Vancil PERMISSIONS: The original video was published with the Creative Commons Attribution license (reuse allowed). CREDITS: Original video source: https://www.youtube.com/watch?v=3giNelTfeAk
Views: 14223 Coding Tech
What is Bitcoin’s true market dominance? Coinmarketcap, the largest resource for cryptocurrency data, has Bitcoin’s market dominance at just above 50 percent. Is this false? New research suggests that Bitcoin’s true market dominance may be upwards of 80 percent if crypto projects volume’s are taken into account as a weighted metric. Today, we will look into the research, break it down, and see if Bitcoin has true crypto market dominance of 80% or if it is really what Coinmarketcap.com says, just 50%. 👌👌Subscribe to The Chico Channel--https://www.youtube.com/channel/UCHop-jpf-huVT1IYw79ymPw?sub_confirmation=1 ⏰ Time Stamps ⏰ 00:08 Introduction 00:39 Bitcoin Controlled The Market In The Beginning 00:57 Bitcoin Dominance Dropped In Early 2017 01:44 How Market Capitalization Is Calculated On Coinmarketcap 02:19 Coinmarketcap Has Flawed Calculation of Market Cap 02:32 Low Volumes Lead To Flawed Market Cap Calculations 03:27 Cryptocurrency & Their Market Cap's Should Follow Some Sort of Pareto or Power Law Distribution 04;17 Plotting Coinmarketcap Data=No Pareto or Power Law Distribution 04;40 Using Log View You Get Some Sort of Power Law Distribution Although It's Still Flawed 05:55 Volume Needs To Be Weighted As A Metric: Volume Weighted Cap: The Results 07:35 What Is Bitcoin's True Dominance Using Volume Weighted Cap? 08:00 Conclusion 📰New Chip Chodeler Episode #5📰 https://www.youtube.com/watch?v=LehJwxJYIHo&t=1s 😱Banned Bitcoin Superbowl Commercial😱 https://www.youtube.com/watch?v=svQ9_IjXaGk 🎤Chico The Rapper Makes His Debut🎤 https://www.youtube.com/watch?v=Ay--0QboLz0 📺Watch These Sweet Videos Again📺 MakerDAO CDP Loan Tutorial https://www.youtube.com/watch?v=yhZbY9Ycep8&t=2s The Slaying of The Bear Whale https://www.youtube.com/watch?v=CNIN71Kl7n4 Which Coin Will Rule The Next Bull Run https://www.youtube.com/watch?v=mMl6JrCzmeU&t=1s 🤫►► ► Chico Crypto Exclusive Links ◄◄◄🤫 🔥Join The Chat On Telegram 🔥 https://t.me/chicocrypto1 👉🏻Follow Me On Twitter https://goo.gl/gmsDXa 👌👌Subscribe to The Chico Channel--https://www.youtube.com/channel/UCHop-jpf-huVT1IYw79ymPw?sub_confirmation=1 💥Buy A Ledger & Keep Your Crypto Safe💥 https://www.ledger.com/products/ledger-nano-s?r=c56a&tracker=MY_TRACKER 👍Download The Brave Browser $BAT & Support Crypto! https://brave.com/chi034 💲 💲Want to buy your first crypto or Bitcoins? Sign up for Coinbase and get $10 in free Bitcoin https://www.coinbase.com/join/5270447e2c6ce91e1c000170 📚 📚Educational links and crypto resources for starting in cryptocurrency Check the prices and stats of the most popular cryptocurrencies with Coinmarketcap https://coinmarketcap.com/ What is Bitcoin, altcoins, Ethereum and other cryptocurrencies https://www.coindesk.com/information/what-is-bitcoin 🏺Cryptocurrency Donations: Support The Channel!!🏺 BTC 3ArFPC5ik9tBy8ART6R2X59qiNXatw5EAG ETH 0xF1d402C0175a9fa80dD770e82fa0BD50FDab0EbD ► ►Thinking of collaborations with Chico Crypto? Business inquires? 📧 Send us an email! [email protected] #bitcion #ethereum #crypto #cryptocurrency #btc #eth #blockchain #trading #altcoin #invest #investment #millionaire #investor #innovation #currency **Disclaimer** The information contained herein is for informational purposes only. Nothing herein shall be construed to be financial legal or tax advice. The content of this video is solely the opinions of the speaker who is not a licensed financial advisor or registered investment advisor. Purchasing cryptocurrencies poses considerable risk of loss. The speaker does not guarantee any particular outcome. Past performance does not indicate future results. This information is what was found publicly on the internet. This information could’ve been doctored or misrepresented by the internet. All information is meant for public awareness and is public domain. This information is not intended to slander harm or defame any of the actors involved but to show what was said through their social media accounts. Please take this information and do your own research.
Views: 11203 Chico Crypto
In the last two videos we described what the Bitcoin blockchain data structure is, and how it can be used to create a consensus algorithm based on proof of work. But we've not talked about whether you *should* do this. In this video we compare a blockchain based public consensus algorithm like Bitcoin's to the classic consensus algorithms such as Paxos, Raft, and PBFT. My apologies if it sounds a bit like a rant at times. ;-) This is a lecture from the Distributed Systems class. See www.distributedsystemscourse.com for more information.
Views: 364 Distributed Systems Course
A blockchain is a distributed database that maintains a continuously growing list of ordered records called blocks. Each block contains a timestamp and a link to a previous block. By design, blockchains are inherently resistant to modification of the data — once recorded, the data in a block cannot be altered retroactively.
Views: 47 Koen Fierens
An even bigger explosion in cybercrime awaits unless we contend with the inconsistency between our prevailing, centralized system for securing information and the increasingly decentralized nature of a peer-to-peer and device-to-device economy. The distributed, decentralized structure of the IoT world will demand a distributed, decentralized trust structure for managing data. The blockchain points to a solution. Michael Casey discusses the security challenges at the Next Money 2017 Fintech Finals
Views: 1580 Next Money
With many of the world’s largest companies aggressively exploring and testing blockchain use cases, it is clear that the technology is poised to disrupt many industries. However, what remains unclear are the inner mechanisms of the technology itself. What makes blockchain different from distributed databases? What new paradigms do blockchains enable that previous technologies could not unlock? How does this affect the design and implementation of blockchain systems? In this webinar, Fraktal Group will explore the technical philosophy behind blockchain technology and distributed systems, and highlight the key differences between both.
Views: 84 Insight Partners
Leading art, technology and finance specialists offered a range of answers at the inaugural Art + Tech Summit at Christie’s in London. Co-curated by: Christie’s, Vastari and Christie’s Education Corporate Sponsor: Bidpoc List of talks: 0:05 – Welcome & Introduction Guillaume Cerutti, CEO, Christie's Elliot Safra, Christie's Bernadine Bröcker Wieder, Vastari 7:37 – Keynote Speaker: Consensus Algorithms, Distributed Ledgers and Bitcoin – What is Blockchain, Really? Nicolas Cary, Co-Founder and President at Blockchain.com 32:32 – Panel Discussion: Blockchain in Wider Industries Moderator: Edward Robinson, Bloomberg Carogero Scibetta, Everledger Vanessa Grellet, ConsenSys Richard Muirhead, Fabric Ventures Anton Ruddenklau, KPMG 01:44:10 – Tech Talk: Blockchain – Legal Fact and Fiction Jonathan Kewley, Clifford Chance 02:02:56 – Debate: Is Blockchain the Holy Grail? William Skannerup, VeridenKey Jordan Fried, Hedera Hashgraph 02:30:09 – Tech Talk: Why the Art World Wasn't Ready for Blockchain Sebastien Genco, Deloitte 02:43:04 – Keynote Speaker: The Blockchain Landscape in the Art World Anne Bracegirdle, Christie’s 03:03:13 – Panel discussion: Blockchain in the Art World – Digital Art Moderator: Jason Bailey, artnome.com Masha McConaghy, BigchainDB/Ocean Protocol Matt Hall, Cryptopunks John Zettler, The R.A.R.E. Network Yehudit Mam, DADA.nyc 04:13:16 – Tech Talk: The Future is Art Daniel Doubrovkine, Artsy 04:28:36 – Panel discussion: Blockchain in the Art World – Art Market Moderator: Jason Bailey, artnome.com Nanne Dekking, Artory Ram Nadella, Paddle8 Jess Houlgrave, Codex Protocol 05:33:32 – Introduction: Speculation and Previous Initiatives Issuing Shares in Art Frédéric de Senarclens, Art Market Guru 05:45:54 – Panel Discussion: Blockchain in the Art World – Tokenisation and Securitisation Moderator: Frédéric de Senarclens, Art Market Guru Marcelo Garcia Casil, Maecenas Niccolò Filippo Veneri Savoia, Look Lateral Marco Abele, TendSwiss 06:31:36 – Tech Talk: Bleeding for Blockchain Kevin Abosch, Artist 06:47:44 – Panel Discussion: Key Take-aways & Reflections Moderator: Georgina Adam, Financial Times and The Art Newspaper Richard Entrup, Christie’s Hans Ulrich Obrist, Serpentine Kati Price, Victoria & Albert Museum Ed Vaizey, Former Minister for Culture, Communications and Creative Industries Sylvie Gleises, AXA Art Summary: https://www.christies.com/features/Blockchain-and-the-art-market-9318-1.aspx?sc_lang=en#FID-9318 -- Get to grips with the technology shaping the future of the art market with the Christie’s Art+Tech Summit. This annual one-day conference aimed to spark innovation and collaboration across the industry, pinpointing a key technology trend each year to explore through inspiring talks, panel discussions and debates. Gathering together top thought leaders, innovators, companies and academics, each summit will offer a comprehensive vision of the impact of a new technology on the art world of today and beyond. Our 2018 inaugural summit, co-curated with Christie’s Education and Vastari, exploreed the potential applications of blockchain within the art market while giving an overarching view of its successes (and failures) in wider industries. With expert speakers from ConsenSys, Deloitte, Clifford Chance, Artsy, The Serpentine Galleries, The Financial Times, and many more, this year’s summit was an unparalleled opportunity to be at the forefront of innovation in the art world. -- Subscribe to Christie's YouTube: http://goo.gl/Vmh7Hf Sign up to Christie's Weekly: https://goo.gl/kc8qpV Follow Christie's on: Facebook: https://www.facebook.com/Christies Twitter: https://twitter.com/ChristiesInc Instagram: https://www.instagram.com/christiesinc Pinterest: https://www.pinterest.co.uk/christiesinc
Views: 6510 Christie's
#Blockchain is one type of a #distributed_ledger. #Distributed_ledgers use independent computers (referred to as nodes) to record, share and synchronize transactions in their respective electronic #ledgers (instead of keeping data centralized as in a traditional ledger). #Blockchain organizes data into blocks, which are chained together in an append only mode. #Blockchain/ #DLT are the building block of “internet of value,” and enable recording of interactions and transfer “value” peer-to-peer, without a need for a centrally coordinating entity. “Value” refers to any record of ownership of asset -- for example, money, securities, land titles -- and also ownership of specific information like identity, health information and other personal data. #Distributed_ledger_technology (DLT) could fundamentally change the financial sector, making it more efficient, resilient and reliable. This could address persistent challenges in the financial sector and change roles of financial sector stakeholders. #DLT has the potential to transform various other sectors as well, like manufacturing, government financial management systems and clean energy. Since this #technology is still nascent, the World Bank Group doesn’t have general recommendations about its use for international development. We are in dialogue with standard-setting bodies, governments, central banks and other stakeholders to monitor, research and pilot applications based on #blockchain and #DLT. However, waiting for “perfect” #DLT solutions could mean missing an opportunity to help shape it. To understand how #DLT can address challenges in the financial sector requires both research and real-life applications and pilots. It also requires resolving consumer protection issues, financial integrity concerns, speed of transactions, environmental footprint, legal, regulatory and technological issues that arise with the advent of new technology. #DLT applications will likely be incremental, and will likely first replace processes and activities that are still manual and inefficient. (Such as reference data maintenance in payment and settlement systems, trade finance, syndicated loans, and tracking provenance of agricultural products and commodities, their subsequent sale or use as financing collateral.) Eventually, #DLT could increase efficiency and lower remittance costs, and potentially improve access to finance for unbanked populations, who are currently outside the traditional financial system.
Views: 138 ILCoin Cryptocurrency