Hyper ledger febric

Hyper ledger febric

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  Hyperledger Hyperledger: Hyperledger (or theHyperledger project) is an umbrella project of open source blockchains and related tools, started in December 2015 by the Linux Foundation. and has received contributions from IBM, Intel and SAP Ariba, to supportthe collaborative development of blockchain-based distributed ledgers. Goals Hyperledger has the following goals:  Create enterprise grade, open source, distributed ledger frameworks and code bases to supportbusiness transactions  Provideneutral, open, and community-driven infrastructuresupported by technical and business governance  Build technical communities to develop blockchain and shared ledger POCs, usecases, field trails and deployments  Educate the public about the marketopportunity for blockchain technology  Promote our community of communities taking a toolkit approach with many platforms and frameworks Differences betweenHyperledger andpermission-less blockchain technologies
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  Components of HyperledgerFrameworks Hyperledger business blockchain frameworksareused to build enterprise blockchains for a consortium of organizations. They aredifferent than public ledgers like the Bitcoin blockchain and Ethereum. The Hyperledger frameworks include:  An append-only distributed ledger  A consensus algorithm for agreeing to changes in the ledger  Privacy of transactions through permissioned access  Smartcontracts to process transaction requests. Hyperledger Iroha :  Hyperledger Iroha is a blockchain framework designed to be simple and easy to incorporateinto infrastructureprojects thatrequire distributed ledger technology.  Itwas originally developed by Soramitsu in Japan and was proposed to Hyperledger by Soramitsu, Hitachi, NTT Data, and Colu. KEY FEATURES OF IROHA: A simple structure • Modern, domain-driven C++ design • Emphasis on mobile application development • A new, chain-based ByzantineFault-Tolerant consensus algorithm, called Sumeragi HyperledgerSawtooth:  Hyperledger Sawtooth is a modular platform for building, deploying, and running distributed ledgers. Distributed ledgers providea digital record (such as asset ownership) thatis maintained without a central authority or implementation.  Sawtooth aims to keep distributed ledgers distributed and to make smartcontracts safe for enterpriseuse.  Hyperledger Sawtooth, contributed by Intel  Itis a blockchain framework that utilizes a modular platform for building, deploying, and running distributed ledgers.
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   Distributed ledgersolutions built with Hyperledger Sawtooth can utilize various consensus algorithms based on the sizeof the network. By default, it uses the Proof of Elapsed Time (PoET) consensus algorithm. which provides the scalability of the Bitcoin blockchain without the high energy consumption.  Hyperledger Sawtooth is designed for versatility, with supportfor both permissioned and permissionless deployments. Eg: Sawtooth lake: Sawtooth Lakeblockchain technology can providean immutable record of the provenance UniqueCharacteristicsofSawtooth:  Sawtooth is designed so that you can grow the sizeof the network  You can actually change the consensus mechanism on the fly Hyperledger Indy :  Hyperledger Indy is a distributed ledger, purpose-builtfor decentralized identity.  Indy provides tools, libraries, and reusablecomponents for creating and using independent digital identities rooted on blockchains or other distributed ledgers. These identities are interoperable across administrative domains, applications, and any other organizationalsilo. That means friends, competitors, and even antagonists can all rely on a shared sourceof truth.  Indy answers fundamentalquestions such as, “Who am I dealing with?” and “How can I verify any data about the other party in this interaction?” Hyperledger Indy letsusersauthenticateidentitybased onthe attributestheyare willing tostore and share themselves. Thiscan reduce the amount ofliability contained withina businessbecause the data canbe kept with the user and presented toyou againin a way that you cantrust and validate that what hasbeensaid really wassaid and is trusted by the other partiesyou dobusinesswith. - NathanGeorge, Maintainer, HyperledgerIndy
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  KEY FEATURES OFINDY Self-sovereignity—Indystores identity artifacts on a ledger with distributed ownership. Theseartifacts can include public keys, proofs of existence, cryptographic accumulators thatenable revocation, and so on. No one but the true owner can change or remove an identity. Privacy—By default, Indy preserves privacy, sinceevery identity owner can operate without creating any correlation risk or breadcrumbs. Verifiable claims—Identity claims can resemble familiar credentials such as birth certificates, driver’s licenses, passports, and so on. But these can be combined and transformed in powerfulways, using zero-knowledgeproofs to enable selective disclosureof only the data required by any particular context. HyperledgerBurrow :  Burrowis a permissionable smartcontractmachine.  Burrowbecamethe fourthdistributedledgerplatform within Hyperledgerin April,2017.Itwas originallydevelopedand proposed to HyperledgerbyMonax.  Burrowprovidesa stronglydeterministic,smartcontract-focused blockchaindesign. Burrowusersbenefitfroman accesscontrollayer throughthe use of smartcontractsand Äúsecurenatives-based permissionlayer.  HyperledgerBurrowprovidesa modularblockchainclientwith a permissionedsmart contractinterpreterdevelopedpartlyto the specificationsof the EthereumVirtualMachine(EVM). Burrow includes all the following components: Burrow includes all the following components: • Consensus engine—Maintains the networking stack between nodes and ordering transactions to be used by the application engine. • Application Blockchain Interface(ABCI)—Provides theinterface specification for the consensus engineand application engine to connect.
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  • Smartcontract applicationengine—Provides developers with a strongly deterministic smartcontract engine for operating complex industrialprocesses. • Gateway—Provides programmatic interfaces for system integrations and user interfaces Hyperledger Modules(Tools) The Hyperledger modulesare auxiliary softwares used for things like deploying and maintaining blockchains, examining the data on the ledgers, as well as tools to design, prototype, and extend blockchain networks. Hyperledger Cello Hyperledger Cello is a blockchain module toolkit that aims to bring the on-demand deployment model to the blockchain ecosystem. The goal is to help enterprises quickly and easily adopt blockchain technologies, by providing automated ways to create, manage, and terminate blockchains. Cello also provides a real-time dashboard where users can: • View the status of the blockchain system • See statistics such as blockchain events, chaincodeperformance, and system utilization • Manage blockchains by creating, configuring, and deleting them • Manage chaincode by deploying and uploading private chaincode Hyperledger Cello currently supports Hyperledger Fabric as the main blockchain implementation. The project plans to supportHyperledger Sawtooth and other types of blockchains. Hyperledger Composer
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  Hyperledger Composer providesa suite of tools for building blockchain business networks. These tools allow you to:  Model your business blockchain network  Generate REST APIs for interacting with your blockchain network  Generate a skeleton Angular application. Built in Javascript (yaey!), Hyperledger Composer provides an easy-to-use set of components that developers can quickly learn and implement. The project was contributed by Oxchains and IBM. The benefits of Hyperledger Composer are:  Faster creation of blockchain applications, eliminating the massive effort required to build blockchain applications from scratch  Reduced risk with well-tested, efficient design that aligns understanding across business and technical analysts  Greater flexibility as the higher-level abstractions make it far simpler to iterate. Hyperledger Explorer: Hyperledger Explorer is a tool for visualizing blockchain operations. It is the first ever blockchain explorer for permissioned ledgers, allowing anyone to explore the distributed ledger projects being created by Hyperledger’s members from the inside, without compromising their privacy. The project was contributed by DTCC, Intel, and IBM. Designed to create a user-friendly web application, Hyperledger Explorer can view, invoke, deploy, or query:  Blocks  Transactions and associated data  Network information (name, status, list of nodes)  Smart contracts (chain codes and transaction families)  Other relevant information stored in the ledger.