The document provides an introduction to blockchain and Hyperledger. It discusses how Hyperledger Fabric now supports Ethereum smart contracts, allowing Ethereum developers to integrate with and migrate to Hyperledger Fabric. It also summarizes some of the key components, security aspects, and functionality of IBM's blockchain platform and Hyperledger, including consensus mechanisms, identity management, pluggable components, and how applications interact with the platform.
This document provides an introduction to blockchain technology. It defines key blockchain concepts like blocks, blockchains, consensus algorithms, and mining. It explains how blockchain works through transactions being grouped into blocks and added to the distributed ledger across nodes in the network. Examples of real-world blockchain applications are given for voting systems, supply chain management, and healthcare data sharing. Benefits of blockchain include transparency, decentralization, and open source development, while challenges include limited production experience and need for customer education.
An Introduction to Blockchain Technology Niuversity
Blockchain technology allows for a shared, replicated ledger of transactions that can be viewed by all participants. It enables peer-to-peer exchanges on a distributed network in a secure and non-repudiable way. Blockchain solves issues with monitoring asset ownership and transfers in a trusted business network by providing a permissioned, replicated shared ledger. It is not just for cryptocurrencies like Bitcoin but can be used for any form of asset registry, inventory, and exchange across different industries. The future potential of blockchain applications is still emerging as it will be applied experimentally to many aspects of society over the next few years.
This was my project presentation and It was so much fun giving this presentation. I was the top among my batchmates which was evaluated by the external designator and was graded A+.
Este documento presenta una introducción básica a la tecnología blockchain, incluyendo definiciones de términos clave como contratos inteligentes y transformaciones digitales habilitadas por blockchain. También explora cómo blockchain podría cambiar nuestro mundo a través de aplicaciones en sectores como servicios financieros, cadenas de suministro y más.
Blockchain is a distributed database that maintains a growing list of transaction records organized in blocks. Each block contains a cryptographic hash of the previous block, transaction data, and a timestamp. This creates a permanent, unalterable record of transactions that is distributed across a peer-to-peer network of nodes. Blockchain technology enables a decentralized system of recordkeeping that does not require a central authority and allows digital transactions to be validated and recorded in a transparent yet secure manner. It has applications in finance, healthcare, supply chain management, and more.
The presentation will give the basic idea about what is blockchain technology, it's architecture, main features, types of blockchain network and other things that will make your fundamentals clear.
Blockchain and cryptocurrencies are emerging technologies that are still not fully understood. There are differing views on their value. Blockchain is a distributed digital ledger of transactions that is replicated across multiple computers. Cryptocurrencies like Bitcoin use blockchain technology, and their value comes from factors like production costs, scarcity, and utility. Ethereum enables decentralized applications and smart contracts through its cryptocurrency Ether. Altcoins have proliferated since Bitcoin, with some gaining significant value through network effects. Initial coin offerings have also raised billions for new blockchain projects.
This document provides an introduction to blockchain technology. It defines key blockchain concepts like blocks, blockchains, consensus algorithms, and mining. It explains how blockchain works through transactions being grouped into blocks and added to the distributed ledger across nodes in the network. Examples of real-world blockchain applications are given for voting systems, supply chain management, and healthcare data sharing. Benefits of blockchain include transparency, decentralization, and open source development, while challenges include limited production experience and need for customer education.
An Introduction to Blockchain Technology Niuversity
Blockchain technology allows for a shared, replicated ledger of transactions that can be viewed by all participants. It enables peer-to-peer exchanges on a distributed network in a secure and non-repudiable way. Blockchain solves issues with monitoring asset ownership and transfers in a trusted business network by providing a permissioned, replicated shared ledger. It is not just for cryptocurrencies like Bitcoin but can be used for any form of asset registry, inventory, and exchange across different industries. The future potential of blockchain applications is still emerging as it will be applied experimentally to many aspects of society over the next few years.
This was my project presentation and It was so much fun giving this presentation. I was the top among my batchmates which was evaluated by the external designator and was graded A+.
Este documento presenta una introducción básica a la tecnología blockchain, incluyendo definiciones de términos clave como contratos inteligentes y transformaciones digitales habilitadas por blockchain. También explora cómo blockchain podría cambiar nuestro mundo a través de aplicaciones en sectores como servicios financieros, cadenas de suministro y más.
Blockchain is a distributed database that maintains a growing list of transaction records organized in blocks. Each block contains a cryptographic hash of the previous block, transaction data, and a timestamp. This creates a permanent, unalterable record of transactions that is distributed across a peer-to-peer network of nodes. Blockchain technology enables a decentralized system of recordkeeping that does not require a central authority and allows digital transactions to be validated and recorded in a transparent yet secure manner. It has applications in finance, healthcare, supply chain management, and more.
The presentation will give the basic idea about what is blockchain technology, it's architecture, main features, types of blockchain network and other things that will make your fundamentals clear.
Blockchain and cryptocurrencies are emerging technologies that are still not fully understood. There are differing views on their value. Blockchain is a distributed digital ledger of transactions that is replicated across multiple computers. Cryptocurrencies like Bitcoin use blockchain technology, and their value comes from factors like production costs, scarcity, and utility. Ethereum enables decentralized applications and smart contracts through its cryptocurrency Ether. Altcoins have proliferated since Bitcoin, with some gaining significant value through network effects. Initial coin offerings have also raised billions for new blockchain projects.
A Blockchain is nothing more than a database. Blockchain offers many advantages as compared to other databases. It has a decentralized structure with no single point of failure and the data stored on the Blockchain is completely tamper proof.
This Edureka Blockchain 101 Training will give you a complete fundamental understanding regrading Blockchain and Bitcoin. You will learn following topics:
1. What is Blockchain?
2. Blockchain concepts
3. Hyperledger
4. Blockchain Use Case
5. Blockchain in the Industry
6. Solidity programming
7. Demo: Smart Contracts
Blockchain Fundamentals - Top Rated for Beginners 101 Blockchains
Blockchain Technology became extremely trendy in past year as a powerful technology which is changing the way we do business.
Learn all you need to know about Blockchain Basics! This presentation is perfect for entrepreneurs, investors and executives who want to learn more about Blockchain Applications and Use Cases.
-------------------------------------------------
RESOURCES & LINKS:
Certified Enterprise Blockchain Professional (CEBP): https://academy.101blockchains.com/courses/blockchain-expert-certification
Free Blockchain Course: https://academy.101blockchains.com/courses/enterprise-blockchains-fundamentals
Blockchain Courses: https://academy.101blockchains.com/
Enterprise Blockchain Professionals Linkedin Group: https://www.linkedin.com/groups/12400295/
Think Tank Webinars: https://101blockchains.com/blockchain-webinars/
-------------------------------------------------
This Blockchain Crash Course presentation covers the following topics:
-What exactly is Blockchain Technology
-Must know Blockchain Terms
-What are Smart Contracts?
-How Blockchain will change our world?
-What is Web 3.0
-Blockchain vs Database
And much more...
This is one of the best Blockchain for beginners training sessions and includes some of our Top Blockchain Infographics.
Looking for a presentation about Blockchain Technology for Beginners? We got you covered! This Blockchain Training session was presented around the globe :)
=> Please share your feedback and we will improve it.
Join our community:
https://101blockchains.com
IoTrust is a Korean company that provides digital wallet services for cryptocurrency and blockchain applications. It offers three types of wallets - a biometric hardware wallet, a card-type wallet, and a mobile app wallet that supports multiple blockchains. The company has seen rapid growth, with over $80 million in venture funding and wallet revenue increasing over 10x in the past two years. It aims to make managing digital assets more convenient and secure through innovative wallet technologies.
Hackbama Presentation
Presenter: Jason Cuneo
Abstract: The revolution of blockchain centered technologies provides security practitioners with a unique opportunity to participate in shaping the future of secure networking and has the potential to redefine how organizations and society transact and determine value. The objective of this discussion is to introduce how blockchains are disrupting the status quo and how they can be used to improve the Cybersecurity landscape.
Advantages and disadvantages of permissionless blockchainBlockchain Council
Blockchain Technology surfaced with the surge of cryptocurrency. Today you may find every business, and all the big industries are talking about using Blockchain. They want to make it a part of their mainstream business operations. On the surface, we know that blockchain is a distributed ledger technology. It works on the principle of decentralisation and peer-to-peer transactions. It means that Blockchain culminates the need of having intermediaries. Thus it saves cost and time both. It is the prime reason that many of the financial institutions and businesses are trying to use Blockchain for their benefit.Check out the full article here >>
https://bit.ly/2zRdAyS
Hyperledger is an open source blockchain project started by the Linux Foundation. It includes distributed ledger technology (DLT) frameworks and tools. Hyperledger Fabric is one of the DLT frameworks and is geared towards business applications. It uses a permissioned network, supports confidential transactions, and does not require cryptocurrency. Assets are represented digitally and transactions are validated using chaincode, which defines the business logic and asset structure. All participants maintain a replica of the distributed ledger to track asset transactions.
Use extensively researched Blockchain PowerPoint Presentation Slides to educate your audience about the secure online payment transactions and cryptographic techniques. Show encryption methods and concept of decentralized network that allows the easy transfer of digital values such as currency and data. Bitcoin developers can incorporate this professionally designed content-ready blockchain PowerPoint presentation templates for their work. This deck covers topics like distributed ledger, working of a distributed ledger, use cases, industrial blockchain benefits, blockchain limitations, and more. Illustrate the idea of transferring funds directly between two parties without any banks or credit card company using blockchain PPT presentation templates. Demonstrate the workings of cryptocurrencies, showcase the process and its benefits with the help of cryptocurrency PPT slides. These templates are completely customizable. You can edit the slides as per your convenience. Change color, text, icon, and font size as per your need. Download now. Engage with disbelievers through our Blockchain Powerpoint Presentation Slides. Explain the grounds for your beliefs.
This document discusses decentralized applications (DApps) from a software engineering perspective. It begins by providing background on cryptocurrencies and blockchains. It then defines DApps, describes their architecture, and categorizes different types. The remainder of the document discusses developing DApps on various blockchain platforms, focusing on Ethereum as an example public blockchain and describing the development process and tools used.
Blockchain is a digital ledger that chronologically records transactions without privacy inclusion. Solidity is the main programming language used to write smart contracts for Ethereum blockchains. The blockchain works by broadcasting new transactions to all nodes, collecting transactions into blocks, nodes working to find proofs of work, broadcasting validated blocks, and creating the next block using the hash of the previous block. Blockchain can revolutionize transactions involving money, goods, property, and avoid fraud. It can make money transfers, property purchases, healthcare, and authenticating purchases more efficient. Blockchain types include public, private, and consortium blockchains. Advantages include transparency, security, efficiency while disadvantages include human error, slow speeds, and energy use. Applications include
Murughan Palaniachari presents information on blockchain concepts. He discusses how blockchain enables a decentralized future (Web 3.0) with distributed and individual ownership of data. Blockchain uses distributed ledgers and cryptography to securely record transactions in an immutable, transparent and verifiable way without centralized control. Key concepts covered include how blockchain works, the structure of blocks and blockchains, consensus mechanisms, smart contracts, and examples of blockchain use cases.
This document discusses blockchain technology, including what blockchain is, how it works, types of blockchain networks, applications of blockchain, advantages and disadvantages. Blockchain is a distributed digital ledger that records transactions in blocks that are linked using cryptography. It allows for transactions to be recorded and distributed without a central authority. Consensus algorithms like proof of work are used to validate transactions and add new blocks to the blockchain. Blockchain has applications in financial transactions, asset tracking, data storage and decentralized applications. Its advantages include transparency, security and cost reduction. However, it also faces challenges related to speed and implementation costs.
- Analyze the strength and weakness of public blockchain and the goal of private blockchain.
- Explains the core architectural features, mechanisms and provisioning process of Hyperledger Fabric.
Blockchain technology was first introduced with the Hashcash algorithm in 1997 and later developed by Satoshi Nakamoto in 2008 to power bitcoin transactions via a consensus algorithm. It consists of blocks of information linked through cryptography to form a distributed ledger managed by a peer-to-peer network, allowing information to be recorded immutably. Participants approve transactions and add verified blocks to the chain through a consensus process. It provides high security, transparency, and accessibility without a central authority through cryptographic linking of chronological blocks.
Blockchain is a tool. Samson Williams likens blockchain to a group text message, in which each participant receives a distributed, time-stamped, tamper-resistant (and encrypted) record of data transactions. Each group text has these characteristics. Everyone in the group “sees” the data, and none can change or gainsay any group message. Smart contracts are computer code put on the blockchain (how, exactly?) that establishes self-executing terms and conditions of a transaction. Are smart contracts smart? If certain data comes in and fulfills a pre-set term or condition, then rights and responsibilities are formed, terminated, modified, or shifted among the parties. Ah certainty and transparency, but also ah garbage in and garbage out. Are some contractual terms not amenable to smart contracting? And are smart contracts necessarily contracts? If not, can they still be useful? If a smart contract is a contract, what is the governing document? Is it the words business people and lawyers use, or is it the code that is supposed to reflect the words?
Part of the webinar series: Blockchain Basics 2022
See more at https://www.financialpoise.com/webinars/
- Hyperledger Fabric now supports Ethereum smart contracts through integration with the Ethereum Virtual Machine (EVM). This will allow Ethereum developers to work with Hyperledger Fabric and migrate smart contracts and decentralized apps between the platforms.
- Hyperledger is an open source blockchain project hosted by the Linux Foundation. It includes various blockchain frameworks and tools including Fabric, Sawtooth, and Composer. Fabric is the most widely adopted Hyperledger blockchain framework.
- Hyperledger blockchain applications interact with peers to access and update the shared ledger. The ledger contains a growing list of immutable transaction records organized into blocks.
Blockchain and BPM - Reflections on Four Years of Research and ApplicationsIngo Weber
In this keynote, delivered at the Blockchain Forum of BPM 2019, I summarized and reflected on research on BPM and blockchain over the last four years, including model-driven engineering, process execution, and analysis and process mining. I also covered selected use cases and applications, as well as recent insights on adoption. The keynote closed with a discussion of open research questions.
A Blockchain is nothing more than a database. Blockchain offers many advantages as compared to other databases. It has a decentralized structure with no single point of failure and the data stored on the Blockchain is completely tamper proof.
This Edureka Blockchain 101 Training will give you a complete fundamental understanding regrading Blockchain and Bitcoin. You will learn following topics:
1. What is Blockchain?
2. Blockchain concepts
3. Hyperledger
4. Blockchain Use Case
5. Blockchain in the Industry
6. Solidity programming
7. Demo: Smart Contracts
Blockchain Fundamentals - Top Rated for Beginners 101 Blockchains
Blockchain Technology became extremely trendy in past year as a powerful technology which is changing the way we do business.
Learn all you need to know about Blockchain Basics! This presentation is perfect for entrepreneurs, investors and executives who want to learn more about Blockchain Applications and Use Cases.
-------------------------------------------------
RESOURCES & LINKS:
Certified Enterprise Blockchain Professional (CEBP): https://academy.101blockchains.com/courses/blockchain-expert-certification
Free Blockchain Course: https://academy.101blockchains.com/courses/enterprise-blockchains-fundamentals
Blockchain Courses: https://academy.101blockchains.com/
Enterprise Blockchain Professionals Linkedin Group: https://www.linkedin.com/groups/12400295/
Think Tank Webinars: https://101blockchains.com/blockchain-webinars/
-------------------------------------------------
This Blockchain Crash Course presentation covers the following topics:
-What exactly is Blockchain Technology
-Must know Blockchain Terms
-What are Smart Contracts?
-How Blockchain will change our world?
-What is Web 3.0
-Blockchain vs Database
And much more...
This is one of the best Blockchain for beginners training sessions and includes some of our Top Blockchain Infographics.
Looking for a presentation about Blockchain Technology for Beginners? We got you covered! This Blockchain Training session was presented around the globe :)
=> Please share your feedback and we will improve it.
Join our community:
https://101blockchains.com
IoTrust is a Korean company that provides digital wallet services for cryptocurrency and blockchain applications. It offers three types of wallets - a biometric hardware wallet, a card-type wallet, and a mobile app wallet that supports multiple blockchains. The company has seen rapid growth, with over $80 million in venture funding and wallet revenue increasing over 10x in the past two years. It aims to make managing digital assets more convenient and secure through innovative wallet technologies.
Hackbama Presentation
Presenter: Jason Cuneo
Abstract: The revolution of blockchain centered technologies provides security practitioners with a unique opportunity to participate in shaping the future of secure networking and has the potential to redefine how organizations and society transact and determine value. The objective of this discussion is to introduce how blockchains are disrupting the status quo and how they can be used to improve the Cybersecurity landscape.
Advantages and disadvantages of permissionless blockchainBlockchain Council
Blockchain Technology surfaced with the surge of cryptocurrency. Today you may find every business, and all the big industries are talking about using Blockchain. They want to make it a part of their mainstream business operations. On the surface, we know that blockchain is a distributed ledger technology. It works on the principle of decentralisation and peer-to-peer transactions. It means that Blockchain culminates the need of having intermediaries. Thus it saves cost and time both. It is the prime reason that many of the financial institutions and businesses are trying to use Blockchain for their benefit.Check out the full article here >>
https://bit.ly/2zRdAyS
Hyperledger is an open source blockchain project started by the Linux Foundation. It includes distributed ledger technology (DLT) frameworks and tools. Hyperledger Fabric is one of the DLT frameworks and is geared towards business applications. It uses a permissioned network, supports confidential transactions, and does not require cryptocurrency. Assets are represented digitally and transactions are validated using chaincode, which defines the business logic and asset structure. All participants maintain a replica of the distributed ledger to track asset transactions.
Use extensively researched Blockchain PowerPoint Presentation Slides to educate your audience about the secure online payment transactions and cryptographic techniques. Show encryption methods and concept of decentralized network that allows the easy transfer of digital values such as currency and data. Bitcoin developers can incorporate this professionally designed content-ready blockchain PowerPoint presentation templates for their work. This deck covers topics like distributed ledger, working of a distributed ledger, use cases, industrial blockchain benefits, blockchain limitations, and more. Illustrate the idea of transferring funds directly between two parties without any banks or credit card company using blockchain PPT presentation templates. Demonstrate the workings of cryptocurrencies, showcase the process and its benefits with the help of cryptocurrency PPT slides. These templates are completely customizable. You can edit the slides as per your convenience. Change color, text, icon, and font size as per your need. Download now. Engage with disbelievers through our Blockchain Powerpoint Presentation Slides. Explain the grounds for your beliefs.
This document discusses decentralized applications (DApps) from a software engineering perspective. It begins by providing background on cryptocurrencies and blockchains. It then defines DApps, describes their architecture, and categorizes different types. The remainder of the document discusses developing DApps on various blockchain platforms, focusing on Ethereum as an example public blockchain and describing the development process and tools used.
Blockchain is a digital ledger that chronologically records transactions without privacy inclusion. Solidity is the main programming language used to write smart contracts for Ethereum blockchains. The blockchain works by broadcasting new transactions to all nodes, collecting transactions into blocks, nodes working to find proofs of work, broadcasting validated blocks, and creating the next block using the hash of the previous block. Blockchain can revolutionize transactions involving money, goods, property, and avoid fraud. It can make money transfers, property purchases, healthcare, and authenticating purchases more efficient. Blockchain types include public, private, and consortium blockchains. Advantages include transparency, security, efficiency while disadvantages include human error, slow speeds, and energy use. Applications include
Murughan Palaniachari presents information on blockchain concepts. He discusses how blockchain enables a decentralized future (Web 3.0) with distributed and individual ownership of data. Blockchain uses distributed ledgers and cryptography to securely record transactions in an immutable, transparent and verifiable way without centralized control. Key concepts covered include how blockchain works, the structure of blocks and blockchains, consensus mechanisms, smart contracts, and examples of blockchain use cases.
This document discusses blockchain technology, including what blockchain is, how it works, types of blockchain networks, applications of blockchain, advantages and disadvantages. Blockchain is a distributed digital ledger that records transactions in blocks that are linked using cryptography. It allows for transactions to be recorded and distributed without a central authority. Consensus algorithms like proof of work are used to validate transactions and add new blocks to the blockchain. Blockchain has applications in financial transactions, asset tracking, data storage and decentralized applications. Its advantages include transparency, security and cost reduction. However, it also faces challenges related to speed and implementation costs.
- Analyze the strength and weakness of public blockchain and the goal of private blockchain.
- Explains the core architectural features, mechanisms and provisioning process of Hyperledger Fabric.
Blockchain technology was first introduced with the Hashcash algorithm in 1997 and later developed by Satoshi Nakamoto in 2008 to power bitcoin transactions via a consensus algorithm. It consists of blocks of information linked through cryptography to form a distributed ledger managed by a peer-to-peer network, allowing information to be recorded immutably. Participants approve transactions and add verified blocks to the chain through a consensus process. It provides high security, transparency, and accessibility without a central authority through cryptographic linking of chronological blocks.
Blockchain is a tool. Samson Williams likens blockchain to a group text message, in which each participant receives a distributed, time-stamped, tamper-resistant (and encrypted) record of data transactions. Each group text has these characteristics. Everyone in the group “sees” the data, and none can change or gainsay any group message. Smart contracts are computer code put on the blockchain (how, exactly?) that establishes self-executing terms and conditions of a transaction. Are smart contracts smart? If certain data comes in and fulfills a pre-set term or condition, then rights and responsibilities are formed, terminated, modified, or shifted among the parties. Ah certainty and transparency, but also ah garbage in and garbage out. Are some contractual terms not amenable to smart contracting? And are smart contracts necessarily contracts? If not, can they still be useful? If a smart contract is a contract, what is the governing document? Is it the words business people and lawyers use, or is it the code that is supposed to reflect the words?
Part of the webinar series: Blockchain Basics 2022
See more at https://www.financialpoise.com/webinars/
- Hyperledger Fabric now supports Ethereum smart contracts through integration with the Ethereum Virtual Machine (EVM). This will allow Ethereum developers to work with Hyperledger Fabric and migrate smart contracts and decentralized apps between the platforms.
- Hyperledger is an open source blockchain project hosted by the Linux Foundation. It includes various blockchain frameworks and tools including Fabric, Sawtooth, and Composer. Fabric is the most widely adopted Hyperledger blockchain framework.
- Hyperledger blockchain applications interact with peers to access and update the shared ledger. The ledger contains a growing list of immutable transaction records organized into blocks.
Blockchain and BPM - Reflections on Four Years of Research and ApplicationsIngo Weber
In this keynote, delivered at the Blockchain Forum of BPM 2019, I summarized and reflected on research on BPM and blockchain over the last four years, including model-driven engineering, process execution, and analysis and process mining. I also covered selected use cases and applications, as well as recent insights on adoption. The keynote closed with a discussion of open research questions.
Blockchain - Primer for City CIOs v05 01 22.pdfssusera441c2
Blockchain primary for city government chief information officers. Originally prepared for the Cities Leadership Forum hosted by Cities Institute, Philadelphia March 2022.
Blockchain Application Design and Development, and the Case of Programmable M...Ingo Weber
Slides from my CLOSER 2021 keynote ( https://www.insticc.org/node/TechnicalProgram/closer/2021/presentationDetails/1390 )
Blockchain has emerged as a decentralized platform for managing digital assets and executing 'smart contracts', i.e., user-defined code. While blockchain's suitability for a given use case should always be scrutinized, it does have the potential to disrupt many of the connection points between individuals, companies, and government entities. In this keynote talk, I will provide an overview of what architects and developers need to know in order to build blockchain-based applications, and how it relates to the cloud and software services. Among others, I will cover blockchain-as-a-service concepts, as well as architectural concerns and model-driven engineering for blockchain applications, the latter also in relation to collaborative business processes. To highlight some of the challenges, I will discuss insights from a project on "programmable money", i.e., blockchain-based money for conditional payments where the money itself checks whether it can be spent in a certain way at the point of payment. Finally, I will touch on insights into current adoption of blockchain.
This document discusses key concepts and components related to blockchain solutions, including actors such as users, developers, operators, and architects. It describes various components that make up blockchain solutions such as ledgers, smart contracts, consensus mechanisms, and how applications interact with blockchains. It also covers considerations for blockchain developers and operators, and challenges around integrating blockchains with existing systems and achieving determinism.
This document provides an introduction to blockchain and Hyperledger technologies. It discusses the ledger problem and how blockchain provides a shared, replicated ledger with consensus. It describes Hyperledger as an open source project from the Linux Foundation for developing blockchain code. It outlines some key Hyperledger Fabric components like peers, chaincode, and the ordering service. It also summarizes how applications interact with Hyperledger Fabric to access the ledger and emit events.
This document provides an introduction to blockchain and Hyperledger. It discusses how Hyperledger addresses issues with traditional ledgers by providing a shared, replicated ledger with consensus. It describes key Hyperledger components like membership services, ordering service, and peers. It also outlines the development process for building apps on Hyperledger, highlighting code patterns, frameworks, and using Visual Studio Code with IBM's blockchain plugin.
Blockchain technology allows for transparent and secure transactions without an intermediary. It has various applications including financial services, smart contracts, IoT, and more. Key benefits are security, transparency, low costs, and reduced time. Blockchain functions by recording transactions in blocks that are linked using cryptography. Programming languages like Java and frameworks like Ethereum and Hyperledger can be used to develop blockchain applications. Databases can also integrate blockchain features to provide a scalable solution for deploying blockchain proofs-of-concept, platforms and applications.
Blockchain first appeared in 2008 when Satoshi Nakamoto introduced the blockchain structure for bitcoin, the first cryptocurrency. Prior work on blockchain technology dates back to 1991, but it was Nakamoto who improved the structure by using a hash cash-like technique to record timestamps of added blocks without central authorization. Since 2008, blockchain has grown significantly, with the size of the bitcoin blockchain network reaching over 200 gigabytes by 2020 as adoption of the technology has increased. Blockchain allows transactions to be recorded in a decentralized, immutable public ledger.
Blockchain technology allows for transparent and secure transactions without an intermediary. It has various applications including financial services, smart contracts, IoT, and more. Key benefits are security, transparency, low costs, and reduced time. Blockchain uses a distributed ledger to record transactions in blocks that are linked through cryptography. Popular programming languages for developing blockchain applications include Java, PHP, and .NET. Databases can also integrate blockchain features to provide a scalable solution.
Introduction to Blockchain and Smart ContractsSaad Zaher
Blockchain & Smart Contracts! This document provides an introduction to blockchain and smart contracts. It discusses what a blockchain is, why many blockchains exist, consensus algorithms like proof of work and proof of stake, public versus private blockchains, smart contracts and how they work, examples of successful smart contracts, potential use cases, and CIT blockchain projects including Catena which provides blockchain as a service and an iRobot proof of concept.
An introduction to Blockchain for Business, as well as a deep dive into the IBM Blockchain Platform, its underpinning technologies, as well as various tools and frameworks that can guide developers towards building applications on top of a running business network.
This document provides an overview of the anatomy of a Hyperledger application. It describes the key components including the Hyperledger architecture, application components, smart contracts, permissioned ledger access, and how applications interact with the blockchain network. The Hyperledger architecture supports various participants like developers, users, and network operators. Applications use smart contracts to interact with the ledger, while smart contracts encapsulate business logic and transactions. Permissioned access controls who can access the ledger through the use of certificates. The document also provides examples of how applications, smart contracts, and external systems integrate with the permissioned ledger.
Blockchain technology was introduced in 2008 through Satoshi Nakamoto's white paper that introduced blockchain as a distributed database that maintains a continuously growing list of transaction records hardened against tampering. The document discusses key definitions around permissioned versus permissionless blockchains and consensus algorithms. It also provides examples of potential business use cases for blockchain as well as success stories from companies applying the technology.
Chaincode refers to programs that are run on Hyperledger blockchain networks to manage ledger state and transactions. It handles business logic that is agreed to by network members. Chaincode is isolated from endorsing peers for security and initializes and manages state through submitted transactions.
This document provides an overview and guidelines for implementing blockchain technology. It discusses key considerations for selecting a blockchain platform, including assessing technical requirements and understanding how the selected platform meets business needs. It then describes the major components of blockchain deployments and presents a reference architecture. Implementation is broken into three tracks: detailing business workflows, setting up infrastructure, and developing business applications and services. Factors for integrating blockchain with existing internal and external systems are also covered.
How to raise $100M for your healthcare startup via ICO: Breaking the myths of...VSee
Telehealth Failures & Secrets to Success Conference 2017 by VSee
Speaker: Danny Yang & Tim Swanson
CEO of BlockSeer & Director of Post Oak Labs
More info at: vsee.com/conference
This document provides an overview of blockchain technology and its applications for business. It begins with defining blockchain as a shared, immutable ledger for recording transactions across a network of nodes. It then discusses how blockchain can be used to build trust and transparency in business processes by enabling real-time sharing of information across organizations. The document provides examples of how blockchain is being applied in various industries like trade finance, food supply chains, and healthcare to improve processes like payments, provenance tracking, and data sharing. It also outlines factors to consider when selecting blockchain use cases and developing blockchain solutions.
This document discusses blockchain technology and its potential applications. It begins by explaining key concepts of blockchain like distributed ledgers, cryptography, consensus models, and smart contracts. It then outlines several potential use cases for blockchain across different industries like financial services, property, government services, and the internet of things. Finally, it discusses factors that will influence the future of blockchain like interoperability, scalability, and security.
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Similar to An introduction to blockchain and hyperledger v ru (20)
The document provides information on how to create a supply chain using blockchain and the IBM Blockchain Platform. It discusses Hyperledger Fabric, the open source blockchain framework, and how the IBM Blockchain Platform is based on Hyperledger Fabric. It also summarizes the IBM Blockchain Platform architecture and deployment options for running blockchain networks on IBM Cloud or on-premises Kubernetes environments.
Samsung. Blockchain Keystore SDK and Use CasesLennartF
The document discusses Samsung's blockchain keystore, SDK, and use cases. The keystore stores private keys for blockchain services in a secure hardware wallet. It puts consumers in control of their data and credentials. The SDK allows developers to integrate blockchain functionality and provides functions for apps. Example use cases include payments, credentials, secure data storage, and digital rights management.
Confidential compute with hyperledger fabric .v17LennartF
Hyperledger Fabric provides confidential compute capabilities through logical partitioning (LPARs) that support the highest commercially available security standard of EAL5+, isolation between workloads, and encryption of data both in transit and at rest. The document discusses how Fabric uses hardware security modules, private data collections, and zero-knowledge proofs to ensure privacy and confidentiality of blockchain transactions and data.
Intro blockchain beyond confidential compute. views from oasis labs, ibm and...LennartF
The document discusses blockchain technology beyond confidential computing. It provides an agenda for a meeting on views from Oasis Labs, IBM, and Samsung. It provides background on blockchain, describing how it began in 2008 with Bitcoin and has since grown. It discusses challenges like Facebook's plans for digital currency Libra. It also describes how Hyperledger Fabric provides security including channels, encryption, and consensus algorithms. Finally, it discusses successful blockchain applications like Food Trust and TradeLens.
1) The document provides an introduction to IBM Blockchain Platform 2.0 for developers. It discusses the history of blockchain technology and how IBM has been involved with blockchain development since 2015.
2) It then walks through building a simple blockchain application for a coffee supply chain, demonstrating how each step such as coffee being purchased, exported, and evaluated can be recorded on the blockchain.
3) The document also discusses how IBM provides tools and services to help developers build, operate, and grow blockchain networks on IBM Cloud or other environments.
1. The document provides steps to upgrade a free IBM Cloud Lite account to a paid Trial account for 6 months using a promo code.
2. Step 1 is to access account settings, step 2 is to verify you have a Lite account, step 3 is to ignore other offers, step 4 is to apply the promo code, and step 5 is to verify the account has been upgraded.
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An introduction to blockchain and hyperledger v ru
1. An Introduction to Blockchain and
Hyperledger
Lennart Frantzell
IBM Developer Advocate
San Francisco
alf@us.ibm.com
V1.2 February 1 2019
Blockchain Explored Series
IBM Blockchain Platform Explored
Fabric Explored
Composer Explored
What’s New
Architectures Explored
5. 5
Breaking News: Hyperledger Fabric Now Supports
Ethereum Smart Contracts
• Enterprise blockchain Hyperledger Fabric has introduced support for Ethereum smart contracts. Fabric is designed
to be modular with four main components. These are the main ledger, the consensus mechanism, identity
management, and smart contracts called chaincode. The latest announcement provides an alternative to chaincode.
• Ethereum’s large pool of developers are comfortable with its Solidity smart contract language, so the integration
should make Fabric more appealing to Ethereum developers. Additionally, many coders use Web3 a Node.js set of tools to
build Ethereum decentralized apps (Dapps). By integrating with the EVM, these developers can work with Fabric and
even migrate smart contracts and Dapps over to Hyperledger Fabric.
• https://www.ledgerinsights.com/hyperledger-fabric-integrates-ethereum-smart-contracts-evm-blockchain/
6. 6
Business networks, wealth and markets
• Business Networks benefit from connectivity
– Participants are customers, suppliers,
banks, partners
– Cross geography and regulatory boundary
• Wealth is generated by the flow of goods and
services across business network in transactions
and contracts
• Markets are central to this process:
– Public (fruit market, car auction), or
– Private (supply chain financing, bonds)
7. 7
Transferring assets, building value
Anything that is capable of being owned or controlled to produce value, is an asset
Two fundamental
types of asset
Intangible assets
subdivide
Cash is also
an asset
• Tangible, e.g. a house
• Intangible, e.g. a mortgage
• Financial, e.g. bond
• Intellectual, e.g. patents
• Digital, e.g. data
• Has property of anonymity
8. 8
Ledgers are key
Ledgers are THE system of record for a business.
Businesses will have multiple ledgers for the multiple
business networks in which they participate.
• Transaction: an asset transfer onto or off the ledger
– John gives a car to Anthony (simple)
• Contract: the conditions for a transaction to occur
– If Anthony pays John money, then car passes
from John to Anthony (simple)
– If car won't start, funds do not pass to John (as
decided by third party arbitrator) (more
complex)
13. 13
… with consensus, provenance, immutability and finality
Bank
records
Participant
B’s records
Auditor
records
Regulator
records
Blockchain
Insurer
records
Participant
A’s records
A shared, replicated, permissioned ledger …
No trusted
third party,
No need
for reconciliation
14. 14
Security: Public vs. private blockchains
• Some use-cases require anonymity, others require privacy
– Some may require a mixture of the two, depending on the characteristics of each participant
• Most business use-cases require private, permissioned blockchains
– Network members know who they’re dealing with (required for KYC, AML etc.)
– Transactions are (usually) confidential between the participants concerned
– Membership is controlled
• For example, Bitcoin
• Transactions are viewable by
anyone
• Participant identity is more
difficult to control
Public blockchains Private blockchains
• For example, Hyperledger
Fabric
• Network members are known
but transactions are secret
15. 15
Security: Real-world vs. digital identity
CA
CA
R
U
U
• Consider real-world identity documents…
– The issuers of the identity documents are trusted third
parties (e.g. passport office)
– There is usually a chain of trust (e.g. to get a bank card
you need a drivers license or passport)
– Identity documents are often stored in wallets
• In the digital world, identities consist of public/private key pairs
known as certificates
– Identity documents are issued by trusted third parties
known as Certificate Authorities (CAs)
• Private blockchain networks also require CAs
– So network members know who they’re dealing with
– May sit with a regulatory body or a trusted subset of
participants
16. 16
Security: Encryption and Signing
• Cryptography basics
– Every member of the network has (at least) one public key and one private key
– Assume that every member of the network knows all public keys and only their own private
keys
– Encryption is the process applying a transformation function to data such that it can only be
decrypted by the other key in the public/private key pair
– Users can sign data with a private key; others can verify that it was signed by that user
• For example
– Alice can sign a transaction with her private key such that anyone can verify it came from her
– Anyone can encrypt a transaction with Bob’s public key; only Bob’s private key can decrypt it
• In private, permissioned blockchains
– Transactions and smart contracts can be signed to verify where they originated
– Transactions and their payloads can be encrypted such that only authorized participants can
decrypt
17. 17
Introducing a trusted oracle
• The architectural approach described in the previous section provides a reliable
means to externalize complex decision rules. However, in the case of volatile
information (such as interest rate), how can you reliably enrich a smart contract with
such information?
• One possibility is to delegate this responsibility to the client application: The client
application retrieves the current interest rate and includes it in its payload to the
smart contract. But why would the network trust the client application to always
provide such information reliably and accurately? Hence, instead of delegating this
responsibility to the client application, a better option is to:
• Delegate the processing for obtaining volatile information to a third-party known as
the oracle
• Deterministically agree on the value to use for a volatile piece of information
https://developer.ibm.com/articles/cl-extend-blockchain-smart-contracts-trusted-oracle/
20. 20
Pluggable Consensus
• https://www.slideshare.net/MattLucas3/blockchain-whats-new-in-hyperledger-fabric-oct-2018
• https://www.slideshare.net/HoreaPorutiu/using-blockchain-to-increase-supply-chain-transparency?qid=c095a0f0-6de6-
43cb-8597-6a1ffccc0d52&v=&b=&from_search=3
• https://www.slideshare.net/MattLucas3/blockchain-whats-new-in-hyperledger-fabric-oct-2018
• This modular architecture allows the platform to rely on well-established toolkits for
CFT (crash fault-tolerant) or BFT (byzantine fault-tolerant) ordering.
• In the currently available releases, Fabric offers a CFT ordering service implemented
with Kafka and Zookeeper. Kafka is fault tolerant, but not Byzantine fault tolerant
• In subsequent releases, Fabric will deliver a Raft consensus ordering service
implemented with etcd/Raft and a fully decentralized BFT ordering service.
21. 21
The Ledger, Blockchain and World State Database
https://hyperledger-fabric.readthedocs.io/en/release-1.4/ledger/ledger.html#example-ledger-fabcar
world state – a database that holds a cache of
the current values of a set of ledger states.
The world state makes it easy for a program
to directly access the current value of a state
rather than having to calculate it by traversing
the entire transaction log (= Blockchain).
22. 22IBM Blockchain Platform
How applications interact with the IBM Blockchain
Platform
Blockchain
Developer
Develops
Chaincode
Submits
0 1 2 3
Ledger
Blockchain WorldState
Get, Put, Delete
Record
SDK
Application
!
Emits
Emits
!
Peer
Accesses
24. 24
What makes a good Blockchain Use Case?
•
• A Business problem that cannot easily be solved
with existing techniques
• An identifiable business network
• With a shared ledger
• With Participants, Assets and Transactions
• A need for embedded trust but no Trusted Third
Party
27. 27
IBM Code Patterns for Blockchain
• IBM Code Patterns for Blockchain: https://developer.ibm.com/patterns/category/blockchain/
• 10 Lessons: Design Thinking for Blockchain
https://www.ibm.com/blogs/insights-on-business/government/10-lessons-design-thinking-blockchain/
28. 28
Linux Foundation Open Source Hyperledger
•
App Layer: Hyperledger Sawtooth
Supply Chain
Cargill
https://sawtooth.hyperledger.org/examples/seafood.html
29. Roadmap
• Channels
• Selective endorsement
• SOLO/Kafka orderers
• LevelDB or CouchDB
• Javascript chaincode
• Connection profile
• Encryption library
• Attribute access control
• CouchDB indexes
• Channel based events
• ACLs
• Service discovery
• Pluggable endorsement and validation
• Private Data Collections
• State based endorsement
• Java chaincode
• CouchDB pagination
• Identity Mixer
• Local collections
• SDK improvements
• Lifecycle changes
• Revocation for Idemixer
• Tokenisation
• RAFT
• Operational metrics and logging
• SDK and SHIM improvements
• Burrow EVM
• Long Term Service (LTS) support
07/17 03/18 06/18 10/18 4Q/18
*
1Q/19
*
Based on https://wiki.hyperledger.org/projects/fabric/roadmap - Dates determined by the Hyperledger community - (*) Subject to change
v1
v1.1
v1.2
v1.3
v1.4
v2.0
30. 30
Announcing Hyperledger Grid, a new project to help build and deliver
supply chain solutions!
• United States-based agricultural conglomerate Cargill has announced that it is investing digital
engineering resources to develop Hyperledger Grid, according to an announcement on Jan. 25.
• Hyperledger Grid is a recently announced project from Hyperledger that aims to streamline supply
chains by using blockchain technology.
• Cargill — the U.S.’s largest privately held company with $114.7 billion in revenue — states that the
Hyperledger Grid can “accelerate development of blockchain and other digital solutions for the global
food and agriculture supply chains.”
https://cointelegraph.com/news/cargill-invests-digital-engineering-to-develop-hyperledger-grid
31. 31
The Blockchain Bean in the Supply Chain Space
https://www.ibm.com/thought-leadership/blockchainbean/
YourCup NJB123
40. 40
Blockchain and Supply Chain
• Using a consortium based model, DLT provides the ability to follow a
product from inception to end point delivery while maintaining an
appropriate degree of control and information availability to the consortium
members.
• The three main components (end-end traceability, physical
characteristics and regulatory concerns) can be properly accounted for
through ensuring the permissions and access required of each entity (e.g.,
regulator, customer, partner, producer etc.)
https://wiki.hyperledger.org/_media/groups/requirements/hyperledger_-
_supply_chain_traceability-_anti_counterfeiting.pdf
44. 44
Trade-offs Between Non-Functional Requirements
Consider the trade-offs between
performance, security and resiliency!
Performance
o The amount of data being shared
o Number and location of peers
o Latency and throughput
o Batching characteristics
Security
o Type of data being shared, and with whom
o How is identity achieved
o Confidentiality of transaction queries
o Who verifies (endorses) transactions
Resiliency
o Resource failure
o Malicious activity
o Non-determinism
45. 45
Hyperledger Fabric Now Supports Ethereum Smart
Contracts
• Enterprise blockchain Hyperledger Fabric has introduced support for Ethereum smart contracts. Fabric is designed
to be modular with four main components. These are the main ledger, the consensus mechanism, identity
management, and smart contracts called chaincode. The latest announcement provides an alternative to chaincode.
• Ethereum’s large pool of developers are comfortable with its Solidity smart contract language, so the integration
should make Fabric more appealing to Ethereum developers. Additionally, many coders use Web3 a Node.js set of tools to
build Ethereum decentralized apps (Dapps). By integrating with the EVM, these developers can work with Fabric and
even migrate smart contracts and Dapps over to Hyperledger Fabric.
• https://www.ledgerinsights.com/hyperledger-fabric-integrates-ethereum-smart-contracts-evm-blockchain/
49. 49
Blockchain in the Oil and Gas industry
• The financial implications of conducting traditional transactions for
businesses in the Oil and Gas industry can be staggering.
• These businesses typically rely on extensive supply chains to bring their
products to market.
• As the number of businesses in the supply chain increases, so does the
cost and complexity of reconciling each transaction.
• In response, many organizations are dedicating small armies of people to
resolving billing disputes which can tie up billions of dollars in working
capital.
https://www.ibm.com/blogs/insights-on-business/oil-gas/blockchain-adoption-
chemicals-petroleum/
51. 51
IBM Food Trust
IBM Food Trust
https://www.ibm.com/blockchain/solutions/food-trust
https://www-01.ibm.com/common/ssi/cgi-bin/ssialias?htmlfid=01022001USEN/
https://developer.ibm.com/patterns/track-the-coffee-supply-chain-on-the-blockchain/
52. 52
IBM Food Trust architecture
DATA ENTRY AND ACCESS
Leveraging solution and global standards to
share data with any network participant
authorized by the data owner, you can feel
confident knowing your data is shared only with
need-to-know business partners in a secure and
confidential environment.
CERTIFICATIONS
Digitize business critical certificates and
inspection documents to optimize efficiency for
information management, certify provenance,
and ensure authenticity.
https://www.ibm.com/us-en/marketplace/food-trust
53. 53
Tradelens: Digitizing the Global Supply Chain
•
IBM Blockchain Services: 1500 industry and technical experts
https://cdn2.hubspot.net/hubfs/4989579/TradeLens%20Solution%20Brief
:%20Edition%20One.pdf
Brings together all parties in the supply chain — including shippers/BCOs, freight
forwarders, inland transportation, ports and terminals, ocean carriers, customs and
other government authorities, and more — onto a blockchainbased platform with a
secure permission and identity framework.
Documents are stored off chain with only their hashes included in on-chain
transactions.
65. IBM Blockchain Platform Free 2.0 Beta
65
Design your network with total control: Maintain complete control of your identities, ledger, and smart contracts through
a totally redesigned console. Management of the individual blockchain components is done by you in your own set
of Kubernetes clusters for greatest deployment flexibility.
Govern distributed network with security and ease: In the new IBM Blockchain Platform, individual network components
are even more powerful than before—you can deploy only the components you need and even connect a single peer to
multiple networks, which accelerates your ability to benefit from multiple blockchain industry networks. The monitoring and
governance tooling provides visibility across all your blockchain components. Later in 2019, we will provide the capability
to connect to nodes running in any environment, including on-premise, public, and hybrid clouds.
Grow your network faster and easier: The new design allows you to grow more quickly and easily, to start small and grow
as you scale, paying only for the compute you need. Simplified DevOps allows you to move from development to test
to production in a single environment, and a new VSCode extension creates seamless integration between smart
contract development and network management.
https://www.ibm.com/blogs/bluemix/2019/02/ibm-blockchain-platform-free-2-0-beta/