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Trent McConaghy  - BigchainDB : a Scalable Blockchain Database, in Python
 
43:20
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: 10807 PyData
Build Your Own Distributed Database With Go
 
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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: 11766 Coding Tech
"The hows and whys of a distributed SQL database" by Alex Robinson
 
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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: 4947 Strange Loop
Centralised vs Distributed Databases
 
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A look at the advantages and disadvantages of whether having one centralised database file or having multiple database files on a network scenarios.
Views: 24633 Christopher Kalodikis
Data Driven #5: Blockchain and Big Data
 
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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 Learn more and download a free trial of the Big Data Platform today: http://bit.ly/2ss77ZB --------------------------------- 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
Views: 8784 Syncfusion, Inc
Build your own distributed database - GopherConSG 2018
 
19:41
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: 1749 Singapore Gophers
Hashgraph vs Blockchain | Is This Is The End of Bitcoin ?
 
07:55
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: 8111 Aimstone
Distributed Systems in One Lesson by Tim Berglund
 
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Normally simple tasks like running a program or storing and retrieving data become much more complicated when we start to do them on collections of computers, rather than single machines. Distributed systems has become a key architectural concern, and affects everything a program would normally do—giving us enormous power, but at the cost of increased complexity as well. Using a series of examples all set in a coffee shop, we’ll explore topics like distributed storage, computation, timing, messaging, and consensus. You'll leave with a good grasp of each of these problems, and a solid understanding of the ecosystem of open-source tools in the space.
Views: 63398 Devoxx Poland
Distributed Applications
 
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Take the full course: https://goo.gl/uMK1h2 Follow along with the course eBook: https://goo.gl/B5Hr52 A Dapp is an application that runs on a network in a distributed fashion with participant information securely protected and operations executed in a decentralized fashion across a network of nodes. Dapps use open source code, operate autonomously with data and records cryptographically stored on a blockchain Produced by: http://complexitylabs.io Twitter: https://goo.gl/ZXCzK7 Facebook: https://goo.gl/P7EadV LinkedIn: https://goo.gl/3v1vwF
Views: 2910 Complexity Labs
01 Microsoft Blockchain as a Service  -Distributed Ledgers
 
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Are you interested in blockchain technology? Want help getting started? The applications and solutions that can be created with this technology provide some unique and very valuable features which highlight the future of building secure applications that enable data-sharing in a way never before imagined. And Microsoft has been hard at work building integration into the Azure platform. Join the experts to explore the components in isolation and in these new solutions. Find out how blockchains function at a low level, look at leveraging a variety of different chains in a solution, and see how to get started building decentralized applications. Explore distributed ledgers (the core blockchain concept), find out how to implement DevOps for blockchain applications, see tool and framework options, and much more. Get the details you need to start architecting solutions using Azure Blockchain as a Service. 1 | Distributed Ledgers 101 Explore distributed ledgers, one of the most fundamental models that make up blockchains. Find out how consensus algorithms work, the math behind the madness, and how ledgers are built and managed. 2 | Smart Contracts Explained Learn about smart contracts, how they have extended blockchain to make it a viable product for enterprises, and how to build and debug your first smart contract. 3 | Decentralized Applications and Architecture Find out how decentralized applications differ from traditional client server or web-based applications. Learn how to design a solution using blockchain. 4 | DevOps for Blockchains on Azure Learn how to construct automated deployments of the smart contract backend. Learn about how these differ from traditional application deployment. 5 | Development of Decentralized Applications Learn about how next-generation, decentralized applications that leverage blockchain technologies can be developed and built. Learn Learn about distributed ledgers, the core blockchain concept. Explore smart contracts and how they are used by blockchain. Get the details on application design for decentralized blockchain applications. Find out how to implement DevOps for blockchain applications. See tool and framework options for building blockchain applications. Learn how ledgers are built and managed.
Views: 524 RG Edu
We love you blockchain!!! | Cointelegraph presents
 
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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: 12492 Cointelegraph
Database Sharding: Designing systems on the server side
 
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Sharding a database is a common scalability strategy used when designing server side systems. The server side system architecture uses concepts like sharding to make systems more scalable, reliable and performant. Sharding is horizontal partitioning of data according to a shard key. This shard key determines which database the entry to be persisted is sent to. Some common strategies for this are reverse proxies. Database interviews ask for concepts like sharding to make databases more performant and available. This makes horizontal partitioning a logical choice. Horizontal vs. Vertical partitioning: https://stackoverflow.com/questions/18302773/what-are-horizontal-and-vertical-partitions-in-database-and-what-is-the-differen Consistent Hashing: https://en.wikipedia.org/wiki/Consistent_hashing https://www.youtube.com/watch?v=zaRkONvyGr8 Sources: https://medium.com/@jeeyoungk/how-sharding-works-b4dec46b3f6 https://medium.com/@jeeyoungk/why-i-love-databases-1d4cc433685f https://www.quora.com/What-is-the-difference-between-consistent-hashing-and-sharding-in-a-distributed-system https://en.wikipedia.org/wiki/Partition_(database) #database #sharding #interview #scalability
Views: 12718 Gaurav Sen
Introduction to Bitcoin, Blockchain, Distributed Ledger Technologies & Financial Inclusion
 
01:02:28
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: 1904 DFS Observatory
How to work BLOCKCHAIN|| SVC|| GDVC|| ShineCity Group
 
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How to work BLOCKCHAIN A blockchain originally block chain, is a continuously growing list of records, called blocks, which are linked and secured using cryptography. Each block typically contains 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. 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 validating new blocks. Once recorded, the data in any given block cannot be altered retroactively without the alteration of all subsequent blocks, which requires collusion of the network majority. Blockchains are secure by design and are an example of a distributed computing system with high Byzantine fault tolerance. Decentralized consensus has therefore been achieved with a blockchain. This makes blockchains potentially suitable for the recording of events, medical records, and other records management activities, such as identity management, transaction processing, documenting provenance, food tractability or voting. 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. The invention of the blockchain for bitcoin made it the first digital currency to solve the double spendingproblem without the need of a trusted authority or central server. The bitcoin design has been the inspiration for other applications. Note:- This video taken by only and only education purpose.
Blockchain Technology Explained Course
 
01:54:54
Blockchain Technology Explained Course 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. phanmembachkhoa.com
Views: 32 bachkhoa phanmem
BLOCKCHAINS || SVC || SHINECITY GROUP
 
03:11
BLOCKCHAINS.. A blockchain, originally block chain, is a continuously growing list of records, called blocks, which are linked and secured using cryptography. Each block typically contains 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. 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 validating new blocks. Once recorded, the data in any given block cannot be altered retroactively without the alteration of all subsequent blocks, which requires collusion of the network majority. Blockchains are secure by design and are an example of a distributed computing system with high Byzantine fault tolerance. Decentralized consensus has therefore been achieved with a blockchain. This makes blockchains potentially suitable for the recording of events, medical records, and other records management activities, such as identity management, transaction processing, documenting provenance, food traceability or voting. 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. The invention of the blockchain for bitcoin made it the first digital currency to solve the double spendingproblem without the need of a trusted authority or central server. The bitcoin design has been the inspiration for other applications. Note:- This video only and only by education purpose.
What is BLOCKCHAIN? The best explanation of blockchain technology
 
06:27
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.
Views: 475257 Lucas Mostazo
A Guide to Building Your First Decentralized Application
 
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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
Views: 289763 Siraj Raval
Building a Blockchain in Under 15 Minutes - Programmer explains
 
14:28
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: 364168 Ivan on Tech
Distributed Storage Systems Made Easy
 
01:10:39
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: 1753 Microsoft Research
Centralised vs Decentralised vs Distributed Systems [Blockchain & Cryptocurrency]
 
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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: 1985 Sonar Systems
19 Industries The Blockchain Will Disrupt
 
09:57
The blockchain is a distributed ledger technology that underlies cryptocurrencies like Bitcoin and platforms like Ethereum. It provides a way to record and transfer data that is transparent, safe, auditable, and resistant to outages. The blockchain has the ability to make the organizations that use it transparent, democratic, decentralized, efficient, and secure. It's a technology that holds a lot of promise for the future, and it is already disrupting many industries. Original post: http://futurethinkers.org/industries-blockchain-disrupt More podcasts & videos about the blockchain: http://futurethinkers.org/blockchain Support us on Patreon: https://www.patreon.com/futurethinkers Check out our merch store: https://www.redbubble.com/people/futurethinkers Blockchain startups and projects featured in this video: Bitcoin - https://bitcoin.org/ Abra - https://www.goabra.com/ Provenance - https://www.provenance.org/ Fluent (Rebranded to Hijro) - https://hijro.com/ SKUChain - https://skuchain.com/ Blockverify - http://www.blockverify.io/ Augur - https://augur.net/ Networking and IoT Adept - http://www.coindesk.com/ibm-reveals-proof-concept-blockchain-powered-internet-things/ Aeternity - https://www.aeternity.com/ Arcade City - https://arcade.city/ La'Zooz - http://www.shareable.net/blog/lazooz-the-decentralized-crypto-alternative-to-uber Innogy - https://bitcoinmagazine.com/articles/innogy-charges-new-electric-car-fleet-using-ethereum-blockchain/ UBS - https://www.ubs.com/microsites/blockchain-report/en/home.html ZF - http://www.econotimes.com/UBS-bank-innogy-and-ZF-partner-to-provide-blockchain-backed-wallets-for-cars-471860 Online Data Storage Storj - https://storj.io/ IPFS - https://ipfs.io/ BitGive Foundation - https://bitgivefoundation.org/ Democracy Earth - http://democracy.earth/ Follow My Vote - https://followmyvote.com/ GovCoin - http://www.businesswire.com/news/home/20160707005803/en/GovCoin-Systems-Implements-Social-Welfare-Payments-Distribution Dubai Blockchain Strategy - http://www.smartdubai.ae/dubai_blockchain.php Circles - aboutcircles.com Gem - https://gem.co/ Tierion - https://tierion.com/ TransactiveGrid - http://transactivegrid.net/ Mycelia - http://myceliaformusic.org/ Ujo Music - https://ujomusic.com/ OpenBazaar - https://www.openbazaar.org/ OB1 - https://ob1.io/ Ubitquity - https://www.ubitquity.io/ Consensys - https://consensys.net/about/ Ethereum - https://www.ethereum.org/ Future Thinkers is a podcast about evolving technology, society and consiousness. If you want to learn more about the blockchain technology, you can listen to some of our episodes going in depth. http://futurethinkers.org/blockchain/ Support us on Patreon: https://www.patreon.com/futurethinkers Donate through Paypal or cryptocurrency: http://futurethinkers.org/support Check out our merch store: https://www.redbubble.com/people/futurethinkers
Views: 1373361 Future Thinkers
AERGO | 4th Generation "Enterprise Ready" Flexible Hybrid Blockchain & Distributed IT Ecosystem
 
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AERGO aims to develop an open source blockchain protocol that is “enterprise ready”. Using their platform, businesses and developers would be able to easily design, build and deploy their applications onto the blockchain within the cloud, with the option of deploying on either public or private blockchains. As a next-generation blockchain, AERGO aims to resolve the issues of IT integration, software development, privacy, scalability, and interoperability that exists in today’s blockchains. AERGO seeks to be the first to provide features such as SQL, reactivity and isomorphic programming. It will also introduce a new software stack comprised of SQL, AERGO and Meteor. The goal is to create a platform for developers to easily build and deploy decentralized applications (dApps) within the cloud with faster transaction speeds and lower operational costs. The project is supported and developed by Blocko Inc., a blockchain infrastructure provider founded in 2014 with operations in the UK, South Korea, and Hong Kong. AERGO will be utilizing Coinstack, a permissioned blockchain solution developed by Blocko that enables users to share data with third parties in a secure and efficient manner and has already been deployed to 25 million users around the world. Blocko works with a number of established companies including Cisco, Hyundai-Kia Motors, KRX Korea Exchange, IBM, Microsoft Azure, SK Telecom, Lotte Card, Samsung SDS, LG CNS, etc. The AERGO platform is comprised of three major components: AERGO Chain, AERGO Hub and AERGO Marketplace. AERGO Website: https://www.aergo.io AERGO Telegram: https://t.me/aergoofficial AERGO Twitter: https://twitter.com/AERGO_IO?lang=en AERGO Github: https://github.com/aergoio Token Tank Presents: AERGO https://youtu.be/H8yY6GnnsAA 1:00 What is AERGO? 2:56 What does “4th generation blockchain” mean? 4:42 What is the relationship between BLOCKO and AERGO? 6:34 What problems is AERGO trying to solve? 7:22 AERGO’s solutions to these problems. 8:34 AERGO CHAIN 9:23 DPos Consesus 10:17 AERGO HUB 12:00 AERGO Marketplace 12:45 AERGOFS (File System) 13:24 AERGO Ecosystem (5 components) 14:07 Token Utility: “AERGO Bits” 15:14 What is AERGO’s “go-to-market” strategy? 16:43 Competitors 18:14 The Team 19:33 Key backers (VCs) 20:12 Roadmap 21:16 What does AERGO plan to do with the money raised? 22:47 Strengths vs Weaknesses 23:49 How does AERGO plan to expand beyond Korea? 25:02 Final thoughts… 📩 Sign up for The Blockchain Brief Newsletter 👉 http://BlockchainBrief.kdub.co 🧟‍♂️ Join The “Crypto Zombies” Telegram ►► https://t.me/joinchat/E67b8w-hQrMsZebuCC6peg 🔺Get The Brave Browser Here ►► https://brave.com/cry542 🛒 Shop on Amazon with BTC ►► http://Alagoria.kdub.co Buy Bitcoin on Coinbase ►► http://Coinbase.kdub.co Ledger Nano S Wallet ►► http://Ledger.kdub.co Buy Cryptos on Binance ►► http://Binance.kdub.co Buy Cryptos on Huobi ►► http://Huobi.kdub.co Buy Cryptos on Bibox ►► http://Bibox.kdub.co Buy Cryptos on KuCoin ►► http://KuCoin.kdub.co Follow me on Twitter ►► http://twitter.com/TheCryptoZombie Join The Telegram ►► https://t.me/joinchat/E67b8w-hQrMsZebuCC6peg DISCLAIMER: I am not a financial advisor. This is not financial advice. This is just my opinion. Always do your own research before investing. I am not responsible for your trades… Market Pumps!!! Is Tether Dead? Ripple In Talks with Trump | Cardano In Trouble? Manipulation https://youtu.be/dbTAw16L_-Y Watch this video again because it's awesome: https://youtu.be/Uuhxez5olaU #aergo #blocko #philzamani #cryptozombie #cryptocurrency #blockchain #crypto #bitcoin #btc #ethereum #eth #blocko #philzamani #aergobit $BTC $ETH $AERGO
Views: 3672 Crypto Zombie
Ethos Summit : Blockchain - The Ultimate Distributed System Paradigm Shift
 
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Maurice Herlihy has an A.B. in Mathematics from Harvard University, and a Ph.D. in Computer Science from M.I.T. He has served on the faculty of Carnegie Mellon University and the staff of DEC Cambridge Research Lab. He is the recipient of the 2003 Dijkstra Prize in Distributed Computing, the 2004 Gödel Prize in theoretical computer science, the 2008 ISCA influential paper award, the 2012 Edsger W. Dijkstra Prize, and the 2013 Wallace McDowell award. He received a 2012 Fulbright Distinguished Chair in the Natural Sciences and Engineering Lecturing Fellowship, and he is fellow of the ACM, a fellow of the National Academy of Inventors, the National Academy of Engineering, and the National Academy of Arts and Sciences.
Views: 349 Ethos
14  Introduction to Sharding
 
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Views: 57218 B's March
Blockchains for Scientific Data
 
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Dr. Tom Kirkham, STFC What if you wanted a database that was owned by no-one and everyone. What if you wanted that database, entrusted to strangers, to be trustworthy and hack proof? Welcome to Blockchain. Blockchain is the high profile technology which underpins many cryptocurrencies, such as Bitcoin, and is often associated with Financial Services. However its applicability is much wider than this – with applications across various industries. In essence it is a distributed database, which is inherently resistant to modification of data, once recorded. Hence it is secure by design – particularly focusing on being tamper-proof and offering non-repudiation. The talk by Dr. Tom Kirckham, of the Science and Technology Facilities Council, Rutherford Lab, looks at the technology, and how it can be used in a scientific environment. Starting with an overview of Blockchain technology, the talk explores why it is often seen to have great potential in changing how data is shared. Focusing on challenges facing the scientific community the talk then describes how Blockchain could improve data provenance and why this is important. A practical example is given on how the technology can be applied to this problem based on work done at STFC.
Views: 52 BCS Member Groups
Storj - Distributed cloud storage - BnkToTheFuture Case Study
 
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http://bit.ly/2gCCCGd These days it’s impossible for businesses and governments around the world to protect confidential files from hackers. In 2014, hackers gained access to very private pictures of Hollywood actresses in the notorious Apple iCloud hack. Heads of state and presidential candidates like Angela Merkel and Hillary Clinton have been spied on, their phones compromised, and emails leaked. On top of this, Edward Snowden revealed how a large number of companies are forced by governments to hand over your files. They are given little choice. As long as all these files keep being stored on servers belonging to big companies like Amazon, Google, Apple and Dropbox, hackers will keep hacking. Unfortunately, because they have much of the world's files, they are a constant target for hackers as well as government demands. At BnkToTheFuture we believe that there must be a better way and when we found Storj, we began to realise that these problems may become history. Storj developed files storage solutions to tackle these issues and chose to raise part of their funding on our Online Investment Platform - BnkToTheFuture.com When the creator of Bitcoin invented the Blockchain it made it possible for you to own your own money and send it cheaper, faster and more securely than when using a bank. Storj allows anybody to store their files encrypted across a Blockchain-based decentralised network of computers rather than trusting one company to keep them safe. This means that just like Bitcoin they can be stored cheaper, faster and more securely and there is no central point of failure. It also means that anybody can rent out their spare hard drive space and get paid for contributing to the network. BnkToTheFuture.com is the largest Online Investment Platform with thousands of professional investors waiting to invest in Financial and Technological innovation. Go to our homepage and you’ll see the total number of professional investors, how much they have invested, and the amount of dividends that they’ve received. Storj was a perfect match for us. They had a top lineup of support from angel investors at Google Ventures, Qualcomm Ventures, Techstars and now BnkToTheFuture. They wanted more funding from professional investors who believed in them and knew the value of their business. And they wanted the investment to come through fast, in different currencies and with a streamlined compliance and documentation process. We gave Storj access to a global community of thousands of qualifying investors ready to invest in Financial and Technological innovation. We gave them a platform that complies with international financial regulations tailored for most major currencies and countries. We structured the investment in a way that meant they only get one registered investor. We cut out the painful admin, legal costs and problems raising further finance in the future, as compliance and documentation was completed by us in an optimised investment structure. And all under a “no win, no fee” agreement with no up-front costs. We provided all our investors with one investment agreement and a forum to communicate with the team quickly, efficiently and privately with additional investor protections. Investors can download all legal work, due diligence and certificates via our platform whenever they want. We also invested in Storj through one of our Venture Capital funds, meaning, investors got to co-invest with us on the same terms and our interests are aligned. If Storj floats on a stock market, is acquired in the future or pays investors dividends, investors get their returns minus our 5% fee. We built our Online Investment Platform with one purpose in mind - to prepare for a radically different future in Financial and Technological Innovation... Businesses just like Storj can raise finance in a safe, fast and effective way, while our investors get to allocate a portion of their wealth to an extremely disruptive and fast growing area that many are beginning to see could change the world of finance - FOREVER! Just like Storj, you can get involved by making a quick online application for finance at BnkToTheFuture.com or register to see if you qualify to invest. http://bit.ly/2gCCCGd
Views: 1449 BnkToTheFuture.com
Distributed trust with blockchain
 
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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.[6] By design, blockchains are inherently resistant to modification of the data — once recorded, the data in a block cannot be altered retroactively.
Views: 40 Koen Fierens
What is Blockchain ?
 
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A #blockchain, originally #block #chain, is a continuously growing list of records, called blocks, which are linked and secured using cryptography. Each block typically contains a cryptographic hash of the previous block,a timestamp and transaction data. By design, a #blockchain is inherently 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 the alteration of all subsequent blocks, which requires collusion of the network majority. #Blockchains are secure by design and exemplify a distributed computing system with high Byzantine fault tolerance. #Decentralized consensus has therefore been achieved with a #blockchain. This makes #blockchains potentially suitable for the recording of events, medical records, and other records management activities, such as identity management, transaction processing, documenting provenance, food tractability voting. #Blockchain was invented by #Satoshi_Nakamoto in 2008 for use in the #cryptocurrency #bitcoin, as its public transaction ledger. 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 been the inspiration for other #applications. Source: Wikipedia
What is DISTRIBUTED DATABASE? What does DISTRIBUTED DATABASE mean? DISTRIBUTED DATABASE meaning
 
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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: 8175 The Audiopedia
iEx ec: Fully Distributed Cloud Thanks to the Ethereum Blockchain - Dr. Gilles Fedak
 
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iExec provides the SMI / SME and individuals a scalable, secure and easy access to the application, the data-sets and the computing resources they need. iExec leverages a set of research technologies that have been developed at INRIA and CNRS in the field of Desktop Grid computing (aka Volunteer Computing). The principle is to collect the computer resources underutilized on the Internet to execute very large parallel applications at the fraction of the cost of a traditional supercomputer. Since the early 2000’s we have pushed this idea to its extreme limit by proposing many software and algorithms in the area of large scale data processing, data management, parallel computing, security and dependability, QoS,… iExec relies on XtremWeb-HEP, a mature, solid, and open-source Desktop Grid software which implements all the needed features : fault-tolerance, multi-applications, multi-users, hybrid public/private infrastructure, deployment of virtual images, data management, security and accountability, interoperability with eScience infrastructure, and many more. In this talk, we’ll show how Ethereum can be used to organize decentralised infrastructures and market places, where everyone will be able to rent its computing resources (CPU, storage, GPU, …), where the innovative SMEs which design Big Data and HPC applications will be able to sell them online immediately with the needed resources to run them, and where highly valued data-sets will be rentable with a fine-grain business model. We’ll present some early results that illustrate the interaction between the Ethereum blockchain and regular distributed systems (e.g task scheduler, data management, etc..) Moreover, because the blockchain provides distributed consensus and resiliency while being fully distributed, we think that it’s going to change drastically the way we design distributed systems and applications. We’ll draw some perspectives on blockchain-based infrastructure management, and present the related research directions.
Views: 5005 Ethereum Foundation
Building a Blockchain Architecture for Large Scale Applications
 
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Chain's Adam Ludwin and Visa’s Peter Berg will share the stage to talk about building a blockchain architecture at Visa-scale. Chain will also make a special announcement. Learn more at www.coindesk.com
Views: 7331 CoinDesk
Blockchain Applications Helps Real Estate Companies in Ghana Bitland 2016
 
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Blockchain Applications Helps Real Estate Companies in Ghana Bitland 2016 http://bitlandglobal.com Blockchain Cadastr Ghana | blockchain applications (bitcoin, ethereum) are a form of smart secure technology application. Blockchains uses code and is even used social, in workshops and by microsoft contracts. | WANT TO INVEST IN GHANA !? THAN MAKE SURE YOUR LAND TITLE IS PROPERLY PROTECTED USING OUR SERVICES THEREFOR THE BLOCKCHAIN WHAT IS BLOCKCHAIN ? A block chain or blockchain is a distributed database, introduced in Bitcoin, that maintains a continuously-growing list of data records that each refer to previous items on this list and is thus hardened against tampering and revision. The initial and most widely known application of block chain technology is the public ledger of transactions for bitcoin, which has been the inspiration for other cryptocurrencies and distributed database designs. TRUSTED TIMESTAMP The bitcoin block chain can be used as a trusted timestamp for arbitrary messages. Third party application services store messages directly in the block chain, allowing anyone who has the block chain to read the message WHO SHOULD CONTACT BITLAND !? Bitland is currently offering services to citizens of Ghana as well as companies and farm unions in Ghana - Bitland will investigate the land title that was issued by the land commission of Ghana - then survey the land (as land surveyor in Ghana) - talk to nearby neighbours (to confirm the land-title validity by mouth). - Record the GPS coordinates with a GPS device - Write down the GPS coordinates of the property - Back in the office will submit the data and information to the Blockchain computer registry - Finally Bitland will send a paper-copy of the submitted records to the customer and rightful property owner (as a certificate). BITLAND AND THE GHANA LAND COMMISSION The Bitland Land Registry Procedure is done in addition to the Land Commission procedure. Bitland creates an extra record (elsewhere) that acts as a benchmark. This record is stored in a blockchain meaning that it is super secure and impossible to forge or tamper with (even by Bitland). You could say that it becomes “written in stone”. Should later on a legal land dispute arise then this conflict can be settled (outside of court) quick and easy (meaning with low costs such as the cost of sending a fax with a fax machine to fax the Bitland Certificate). BITLAND INVESTOR RELATIONSHIPS Bitland provides the best services to property investors in Ghana and foreign investment. Bitland can (also) help property investors each step of the way to secure land title registration as well as finding properties to invest in .. We also investors in properties in our portfolio. Bitland has the contacts, the network, the web presence, the know how and good intentions. Bitland is connected to dozens of farm unions so for those interested in gold mining, cacao farming or housing then contact Bitland as well. Note that Bitland values her integrity and besides is aware that maintaining a good reputation can only fulfill our long term global aspirations. We work and worked closely with the Ghana Land Commission Office. BITLAND GLOBAL Bitland is currently (also) developing a Global Blockchain Cadastral System so the Bitcoin-Blockchain Technology can be offered on a large scale .. for example all African nations. Bitland’s efforts will likely (also) uncover vast amounts of money in unknown real estate rights. CALL: +233246255577 EMAIL: [email protected] PERSON: mr. Narigamba Mwinsuubo FACEBOOK: http://www.facebook.com/narigamba FACEBOOK PAGE: https://www.facebook.com/realestatela... GOOGLE+: https://plus.google.com/u/0/109196501... GOOGLE COLLECTION: https://plus.google.com/u/0/collectio... TWITTER: https://twitter.com/realestateghana YOUTUBE: https://www.youtube.com/watch?v=d5cpe... CHANNEL: https://www.youtube.com/channel/UCM-m... REAL ESTATE: https://www.youtube.com/watch?v=MnJKI... FORUM: https://youtu.be/tla6_T1Yt40 #GHANA #REALESTATE #BITLAND #BLOCKCHAIN#LEGAL #ARCHITECTS #GOLDMINING #CACOA #CACAO #FARMERS #WondaWorld #LANDREGISTRATION #LANDGHANA VISIT: http://bitlandglobal.com
The Blockchain: A New Security Mindset for an IoT World | Michael Casey
 
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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: 1461 Next Money
How Bitcoin Works Under the Hood
 
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A somewhat technical explanation of how Bitcoin works. Want more? Check out my new in-depth course on the latest in Bitcoin, Blockchain, and a survey of the most exciting projects coming out (Ethereum, etc): https://app.pluralsight.com/library/courses/bitcoin-decentralized-technology Lots of demos on how to buy, send, store (hardware, paper wallet). how to use javascript to send bitcoin. How to create Ethereum Smart Contract, much more. Shorter 5 min introduction: https://www.youtube.com/watch?v=t5JGQXCTe3c Written version: http://www.imponderablethings.com/2013/07/how-bitcoin-works-under-hood.html My Bitcoin address: 13v8NB9ScRa21JDi86GmnZ5d8Z4CjhZMEd Arabic translation by Ahmad Alloush Spanish caption translation by Borja Rodrigo, [email protected], DFJWgXdBCoQqo4noF4fyVhVp8R6V62XdJx Russian caption translation by Alexandra Miklyukova Italian voice over: http://youtu.be/1aEf3qr7UdE Italian captions translated by Simone Falcini, 1H5KdCnBooxfqpXtyQBBAKKRU7MkCZCVCe
Views: 2618780 CuriousInventor
Blockchain 101 - A Visual Demo
 
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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: 907602 Anders Brownworth
What's So Exciting About Blockchain? with Arthur Yu
 
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- 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: 6409 CyberVein English
Blockchain
 
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The blockchain is a distributed database that is used to maintain a continuously growing list of records, called blocks. Each block contains a timestamp and a link to a previous block. A blockchain is typically managed by a peer-to-peer network collectively adhering to a protocol for validating new blocks. By design, blockchains are inherently resistant to modification of the data. 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. 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. The ledger itself can also be programmed to trigger transactions automatically." Blockchains are secure by design and are an example of a distributed computing system with high Byzantine fault tolerance. Decentralized consensus has therefore been achieved with a blockchain. This makes blockchains potentially suitable for the recording of events, medical records and other records management activities, such as identity management, transaction processing, and documenting provenance. https://en.wikipedia.org/wiki/Blockchain
Views: 24 Steven Waters
What is Blockchain?
 
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What is Blockchain? A blockchain is a continuously growing list of records, called blocks, which are linked and secured using cryptography. Each block typically contains a cryptographic hash of the previous block, a timestamp, and transaction data. 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 collusion of the network majority. Blockchain was invented by Satoshi Nakamoto in 2008 to serve as the public transaction ledger of the cryptocurrency bitcoin. 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. Blockchains are secure by design and exemplify a distributed computing system with high Byzantine fault tolerance. Decentralized consensus has therefore been achieved with a blockchain. This makes blockchains potentially suitable for the recording of events, medical records, and other records management activities, such as identity management, transaction processing, documenting provenance, food traceability, and voting. So that is all about blockchains. It is information for blockchain for dummies. Thanks for watching this video, if you enjoyed this video, please do not forget to like and subscribe to our channel. In this channel you will get information about various business related topics such as money, investing, real estate and online businesses. Bye. Source and Credit: https://en.wikipedia.org/wiki/Blockchain ★☆★ MUSIC CREDIT ★☆★ Carefree by Kevin MacLeod is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/...) Source: http://incompetech.com/music/royalty-... Artist: http://incompetech.com/ ★☆★ RELATED VIDEOS ★☆★ ★ 5 Essential SEO Tips for Video Marketing https://youtu.be/CRWvYzRRhbk ★ 3 Best WordPress Plugins for SEO To Get Higher Ranking https://youtu.be/uVRCowTo70M ★ 5 Best Email Marketing Services for Small Business https://youtu.be/tUE9R0EIkYY ★ How to Become a Real Estate Investor https://youtu.be/5TvgZEhYsFk ★ 5 Tips for Choosing the Best Index Funds https://youtu.be/XbACv7y798Q ★ 5 Affiliate Marketing Blogs Every Beginner Should Read https://youtu.be/FG4F5XfruUg ★ 3 Marketing Tools That Can Help Grow Your Ecommerce Business https://youtu.be/cEHBxoeIyew ★☆★ ABOUT BUSINESSOPEDIA ★☆★ Businessopedia contains videos on the topics of business, finance, money, marketing, law etc. Subscribe to this channel to increase your knowledge and awareness about business concepts and fundamentals. Subscribe on https://www.youtube.com/channel/UCrmtG38i6fG5J1xYavZZHUA?sub_confirmation=1 ★☆★ COPYRIGHT DISCLAIMER ★☆★ Some contents are used for the educational purpose under fair use. Copyright Disclaimer Under Section 107 of the Copyright Act 1976, allowance is made for "fair use" for purposes such as criticism, comment, news reporting, teaching, scholarship, and research. Fair use is a use permitted by copyright statute that might otherwise be infringing. Non-profit, educational or personal use tips the balance in favor of fair use. ★☆★ AFFILIATE DISCLAIMER ★☆★ This video and description contain affiliate links, which means that if you click on one of the product links, we’ll receive a small commission. This help supports the channel and allows us to continue to make videos like this. Thank you for the support! ★☆★ DISCLAIMER ★☆★ We have created these videos for educational purposes only. Please be aware that Investing of any kind involves risk. It is imperative that you conduct your own research before investing your money. We are sharing tips with no guarantee of gains or losses on any investments you make. Images are licensed under CC: www.getstencil.com www.pixabay.com www.pexels.com www.commons.wikimedia.org www.flickr.com www.en.wikipedia.org www.publicdomainpictures.net Businessopedia (#businessopedia)
Views: 9 Businessopedia
ælf - The scalable Blockchain with multi-layer structure and self governance
 
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ælf aspires to be the next generation Blockchain technology with scalability and self governance. It adopts an innovative approach to tackle three key challenges of current Blockchain technology: 1. Scalability; 2. Resource segregation; 3. Governance. The company in charge of ælf development has been funded by top tier VCs, such as China Growth Capital, Draper Dragon, WeX Fintech, Taoshi Capital, Danhua Capital, and Albatross Venture, and FBG Capital. ælf unlocks scalable distributed computing power · enables nodes to run on clusters, significantlyimproving the performance of each node based on its computing power · analyzes transaction dependency with an innovative parallel processing scheduler, letting nodes to process independenttransactions in parallel · adopts DPoS on Main Chain to leverage highcomputing power from specialized mining nodes ælf segregates resources to independent side chains · adopts a multi-chain structure, with one SmartContract running on one Side Chain, without interference · uses Merkle Tree root to index side Chains on MainChain ælf adopts a democratic voting process to determine software updates and new features · grants voting rights to token holders based on stake · registers voting results in immutable smart contracts
Views: 8342 CoinDesk
GOTO 2017 • Building a Serverless Distributed Ledger with FaunaDB • Chris Anderson
 
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This presentation was recorded at GOTO Berlin 2017 http://gotober.com Chris Anderson - Director of Developer Experience at Fauna ABSTRACT As the blockchain hype passes, one standout use-case with lasting interest is the distributed ledger. A distributed ledger allows participants at different sites to maintain shared transaction logs. Enterprises are exploring non-blockchain implementations of distributed ledgers, while at the same time embracing the serverless paradigm. In this talk we’ll explore a ledger implementation [...] Download slides and read the full abstract here: https://gotober.com/2017/sessions/335 https://twitter.com/gotober https://www.facebook.com/GOTOConference http://gotocon.com
Views: 1965 GOTO Conferences
Blockchain Essentials & Blockchain-as-a-Service on CloudFoundry - Gurvinder Ahluwali & Gari Singh
 
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Blockchain Essentials & Blockchain-as-a-Service on CloudFoundry - Gurvinder Ahluwalia & Gari Singh, IBM Blockchain is a new pattern of distributed transaction systems with private or public immutable ledger properties arrived through decentralized consensus algorithms across peer nodes. Recent milestones have created the Hyperledger Project as an Open Source Blockchain and delivered Blockchain-as-a-Service for the first time on a CloudFoundry-based commercial cloud provider. The three broad applications of Blockchain are as a platform for exchange of tangible and intangible assets, as a trusted source of truth, and to run smart contracts. This session will explain Blockchain, its uses, and its relationship to the cloud world. The session will elaborate on four consensus technology approaches, other architecture considerations and practices important to your Blockchain-based visioning or projects. Blockchain business use cases in Financial Services, Internet of Things, Business Contracts, Supply Chain Management and Provenance will be outlined. The session will demo an application built using Blockchain-as-a-Service running on a CloudFoundry-based provider cloud. Gurvinder Ahluwalia IBM CTO Cloud Technical Solutioning Dallas Gurvinder Ahluwalia is the CTO for the Cloud Technical Solutioning unit at IBM covering NA and an early member of IBM's technical community working on Blockchain. In these duties, he covers CloudFoundry-based Bluemix ecosystem, hybrid cloud, and other services with the goal of weaving IBM, Open Source, and non-IBM capabilities into cohesive strategy and implementations for clients. Guri has taken $15M-150M dev programs for launch to internal environments or to commercial markets products. Previously, he has led Product Engineering of Handheld devices at Texas Instruments and Consulting practices in Distributing Computing at Accenture and in Digital Strategy at Diamond Technology Partners / PwC. He is based in Dallas, available on Twitter @guriahluwalia. Gurvinder is a Member of the IBM Academy of Technology. Gari Singh IBM Chief Architect - Cloud Integration United States Gari Singh is an IBM Distinguished Engineer currently focused on Blockchain technology. He leads the architecture and implementation of the CloudFoundry based IBM Bluemix Blockchain offerings. Gari is a versatile technologist with over 20 years experience with all aspects of product delivery. He has held various roles spanning multiple technologies and industries. Prior to his current role, Gari was the chief architect for IBM's IoT Cloud MessageSight offerings.
Views: 15210 Cloud Foundry
Viktor Tron - Distributed Database Services - Swarm Orange Summit 2017
 
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Viktor Tron at Swarm Summit 2017 more info at http://swarm-gateways.net
Views: 395 Aron Privacy
Token Economies
 
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Take the full course: https://goo.gl/uMK1h2 Follow along with the course eBook: https://goo.gl/B5Hr52 A new set of web technologies are enabling a more distributed economic model based upon the blockchain and token markets. These token markets greatly reduce our dependency on centralized organizations and expand markets as systems of distributed organization. In this video we explain the workings of the blockchain, tokens, distributed markets and token investments. Produced by: http://complexitylabs.io Twitter: https://goo.gl/ZXCzK7 Facebook: https://goo.gl/P7EadV LinkedIn: https://goo.gl/3v1vwF
Views: 25549 Complexity Labs
Distributed Systems, Demystified: Cassandra, DataStax demo and FAQ
 
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Distributed system blog posts, podcasts, and presentations are everywhere, but understanding how to actually use various tools, projects, and services? Not so straightforward. Adron Hall (@adron), Developer Evangelist at DataStax, joins Christina Warren (@film_girl) to break down distributed systems, including what they are (and aren't), then dive into questions to ask as you design distributed data systems and how to weigh pros and cons. To help you visualize and get started, you'll see his favorite Cassandra* demo -- and how to make systems more intelligent and resilient across clouds and regions. *Apache Cassandra = NoSQL open source distributed database 00:54 What is a Distributed System? 04:07 Distributed database demo - multi-cloud, multi-node, DataStax and more 08:32 When should I use a distributed system? 10:00 Getting started resources, repos, and more Check out Microsoft + Open Source: https://opensource.microsoft.com/ DataStax Academy materials available here: https://academy.datastax.com/courses Explore Cassandra: http://cassandra.apache.org/ Adron's blog: https://compositecode.blog/ DataStax Enterprise is available in the Azure Marketplace here: https://aka.ms/DataStax_and_Azure_Marketplace Check out Azure: https://aka.ms/OpenSourceShow/05
Views: 1718 Microsoft Developer
Rethink Trust 2018: Johan Pouwelse, Distributed Trust Design
 
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For all the talks in RethinkTrust.org 2018: https://chief.sc/rethinktrust2018-videos Background and summary of the conference by the founder, Dr. Alexy Khrabrov: https://chiefscientist.org Next Enterprise Blockchain Engineering track By the Bay: http://scale.bythebay.io ----- We now have the ability to create trust with software, as shown by Ebay, AirBnB, and Uber. Delft University of Technology is home to the oldest research group creating online trust at scale with real people. A total of 1.8 million people have installed our Tribler software over the years. It offers a Youtube-like experience with Bittorrent support, Tor-like anonymous tunnels, and our own bandwidth token economy. In August 2007 we launched a primitive distributed ledger together with Harvard University for "bandwidth-as-a-currency". It provides an incentive to donate seeding bandwidth or Tor-like relays. We have expanded upon this initial operational system ever since. Our system is based on trust, instead of crypto puzzles. Our IETF standard outlines "Trustchain" in detail. Trust and trustworthy identities are essential. We worked for years on the problem of fake identities and we will go live with the first government-backed self-sovereign identity after the summer. We want to generalize the various isolated profit-driven communities which try to build trust, to form a public utility. Our audacious ambition is to establish a new scientific field, we call Distributed Trust Design. Distributed Trust Design provides a coherent framework to transform mutually non-trusting people into trustworthy online communities of arbitrary size, that have a process for democratic decision-making, the ability to punish those who freeride on the community or are dishonest in order to manage a marketplace, govern a resource sustainably, schedule activities, or achieve a common purpose in general. Dr. J.A. Pouwelse, Associate Professor, founder of one of the largest blockchain labs in the EU. Blockchain-lab.org deployed their first primitive ledger in August 2007, at the time this research area was still called distributed accounting systems. The lab produced several world-first innovations such as a scalable blockchain architecture, a fully decentralized blockchain-regulated market, and replaced proof-of-work with trust.
Views: 49 FunctionalTV
Security Now 398: Distributed Hash Tables
 
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COX is blocking UPnP, "Darkleech", poor Comcast JavaScript, Distributed Database technology, and more.
Views: 2994 Security Now
Blockchain Building with Daniel van Flymen
 
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Visit our website https://softwaredaily.com A blockchain is a data structure that provides decentralized, peer-to-peer data distribution. Bitcoin is the most well-known blockchain, but in the next decade we will see many more blockchains. Most listeners probably know that you could just fork the code of Bitcoin to start your own blockchain–but wouldn’t it be nice to know how to build a blockchain from scratch? Daniel van Flymen is the author of the Medium article Learn Blockchains by Building One. In his post, he walks you through how to write the code for a blockchain–just like any other web app. He starts with raw Python code, defines the data structures, and stands up his simple blockchain app on a web server to give a toy example for how nodes in a blockchain communicate. For me, this was a great article to read. I have reported on blockchains for over a year, but had not seen such a clear example with executable, simplified code. Stay tuned at the end of the episode for Jeff Meyerson’s tip about making the most of a new job: brought to you by Indeed Prime. To find all of our coverage of cryptocurrencies, download the Software Engineering Daily app for iOS or Android to hear all of our old episodes. They are easily organized by category, and as you listen, the SE Daily app gets smarter, and recommends you content based on the episodes you are hearing. If you don’t like this episode, you can easily find something more interesting by using the recommendation system. The mobile apps are open sourced at github.com/softwareengineeringdaily. If you are looking for an open source project to hack on, we would love to get your help! We are building a new way to consume software engineering content. We have the Android app, the iOS app, a recommendation system, and a web frontend–and more projects are coming soon. If you have ideas for how software engineering media content should be consumed, or if you are interested in contributing code, check out github.com/softwareengineeringdaily, or join our Slack channel (there’s a link on our website)–or send me an email: [email protected] Transcript Transcript provided by We Edit Podcasts. Software Engineering Daily listeners can go to weeditpodcasts.com/sed to get 20% off the first two months of audio editing and transcription services. Thanks to We Edit Podcasts for partnering with SE Daily. Please click here to view this show’s transcript. Sponsors Spring Framework gives developers an environment for building cloud native projects. On December 4th-7th, SpringOne Platform is coming to San Francisco. SpringOne Platform is a conference where developers congregate to explore the latest technologies in the Spring ecosystem and beyond. Speakers at SpringOne Platform include Eric Brewer (who created the CAP theorem), Vaughn Vernon (who writes extensively about Domain Driven Design), and many thought leaders in the Spring Ecosystem. SpringOne Platform is the premier conference for those who build, deploy, and run cloud-native software. Software Engineering Daily listeners can sign up with the discount code SEDaily100 and receive $100 off of a Spring One Platform conference pass. I will also be at SpringOne reporting on developments in the cloud native ecosystem. Join me December 4th-7th at the SpringOne Platform conference, and use discount code SEDaily100 for $100 off your conference pass. Indeed Prime flips the typical model of job search and makes it easy to apply to multiple jobs and get multiple offers. Indeed Prime simplifies your job search and helps you land that ideal software engineering position. Candidates get immediate exposure to top companies with just one simple application to Indeed Prime. Companies on Prime’s exclusive platform message candidates with salary and equity upfront. Indeed Prime is 100% free for candidates – no strings attached. Sign up now at indeed.com/sedaily. You can also put money in your pocket by referring your friends and colleag
Views: 33 Software Daily
Blockchain Architecture and Design
 
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Blockchain Architecture and design video with a focus on the back end development technologies available for distributed ledgers. This is a beginning video of a series and just touches on some of the technologies available to create a private blockchain.
Views: 47 I Kenley
Blockchain Training | Blockchain Tutorials | MaxMunus
 
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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: 112 MaxMunus Training

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