#hyperledger

What Does #decentralization Mean for Your Business?
▻https://hackernoon.com/what-does-decentralization-mean-for-your-business-7d06c9e30c5?source=rss

https://cdn-images-1.medium.com/max/620/1*TxXjRrA1Dath7ZlPl3VIrQ.jpeg

How Decentralization Can Benefit Your Business: Evaluating #bitcoin, #hyperledger, Algorand, and Elixxir▻https://www.gtis.co.za/news/online-collectables/decentralization-2-0/Centralized services like Facebook, Microsoft, and Yahoo keep all your eggs in one basket. This means that bad actors only need to attack one weak link to compromise all your data. And there are many ways to do it, including DDoS, Man-in-the-Middle, and credential stealing to name a few. Decentralized services keep your data safe and secure by distributing it across many redundant servers with cutting-edge cryptography that ensures your data is complete, immutable, and incorruptible. Of course, there are many degrees of decentralization. In this article, we explore the varieties of decentralization, their history and (...)

#cryptocurrency #consensus

Identity: The Elephant in the Enterprise #blockchain Room
▻https://hackernoon.com/identity-the-elephant-in-the-enterprise-blockchain-room-6f31ed8d4132?sou

https://cdn-images-1.medium.com/max/800/1*iIMDfh41n6rosMB89fvhSA.jpeg

The adoption of permissioned blockchain technologies in the enterprise is a road full of challenges. The so called Web3 stack based on decentralized ledgers is still fundamentally immature to enable sophisticated enterprise business processes. Among the building blocks missing from enterprise blockchain platforms, identity raises to the top of the list as one of the omnipresent challenges of this new generation of enterprise solutions. At Invector Labs, we are regularly faced with the challenges of enabling identity management capabilities in permissioned blockchain solutions. As a result, we have developed certain ideas of the key capabilities and models of an identity layer for enterprise blockchain solutions which I would like to outline in this article.Over the last five years, the (...)

#hyperledger #ethereum #invector-labs #cryptocurrency

Understanding #blockchain Private Data. A Hands-on Example
▻https://hackernoon.com/understanding-blockchain-private-data-a-hands-on-example-eacc3efe4ad6?so

https://cdn-images-1.medium.com/max/720/0*_Nw8bHhVqZnOjOxW.png

Hyperledger Fabric 1.2+ supports a recent feature called Private Data. In this #convector example I want to show how it works.One of the main concerns the enterprise has around the Blockchain technology is the “public” by default state of most of the frameworks and networks out there.Private Data is a feature that allows organizations in a network to share both “public” (accessible to all participants) and private data in the same channel.A channel in #hyperledger Fabric is the actual ledger. It has policies and settings on its own, and is usually the result of multiple organizations connected together.For example, 10 organizations in a commercial network may want to see every transaction between each of them, but would prefer to keep some specific data hidden from non involved organizations, (...)

#javascript #privacy

Five Challenges of Permissioned #blockchain Solutions and the Tools and Protocols that can Help You…
▻https://hackernoon.com/five-challenges-of-permissioned-blockchain-solutions-and-the-tools-and-p

https://cdn-images-1.medium.com/max/800/1*6QQM5_TFPN5fCq7UzXXL4g.jpeg

Five Challenges of Permissioned Blockchain Solutions and the Tools and Protocols that can Help You Solve ThemImplementing permissioned blockchain solutions is both equally fascinating and really challenging. Every day, there are new articles in mainstream media outlets claiming how blockchain technologies are going to transform many industries but the reality is not that glamorous. While blockchains bring tremendous value to established enterprise business processes, most permissioned blockchain implementations are not getting passed the pilot phase. After the initial excitement, most teams realize that implementing permissioned blockchain applications at scale require tremendous levels of technological skills and quite a bit of infrastructure building in order to integrate the new (...)

#cryptocurrency #ethereum #invector-labs #hyperledger

Architecting a #hyperledger Solution — Things to keep in mind
▻https://hackernoon.com/architecting-a-hyperledger-solution-things-to-keep-in-mind-78033e6fee75?

https://cdn-images-1.medium.com/max/1024/1*NWdPPj6NvicKqZUq9MMlmA.png

Architecting a Hyperledger SolutionAt the time of writing this article, there are not many resources available to derive the nodes and architect a Hypderledger Fabric solution. I hope this post will bring some amount of clarity in designing an enterprise level hyperledger fabric solutionYou will have to keep following things in mind while architecting a hyperledger solution –1. Fabric has a highly modular and configurable #architecture suitable for a broad range of industry use cases including banking, finance, insurance, healthcare, human resources, supply chain.The Fabric platform is also permissioned. Unlike a public permissionless network where the participants are known to each other, instead fabric is anonymous and therefore fully untrusted. This means that while the participants may (...)

#blockchain #smart-contracts #blockchain-technology

Hurley: Setup #development Environments for #hyperledger Fabric
▻https://hackernoon.com/hurley-setup-development-environments-for-hyperledger-fabric-6eabe7f309f

https://cdn-images-1.medium.com/proxy/1*ztDgrvsxkGcfL5yXIvZy8A@2x.png

As a part of the #convector Suite, we decided to spin out the Dev Env libraries and turn them into an independent project. The main reason for that decision is that we know that it may be overwhelming to deal with the environment while also developing with Hyperledger Fabric and other frameworks. We always see people all the time in chats, channels, and blogs having a hard time with those tasks. It is a problem big enough to be its own product.If you are not familiar with the Convector Suite take a look at this post: Announcing: Convector, a #javascript Framework for Smart Contract SystemsThe Convector Suite has grown since launch 5 months ago. Initially, it was made only of Convector Smart Contract libraries and a few utils to install and upgrade smart contracts during (...)

#code

How to penetrate into the #blockchain space as a developer without having a concrete project
▻https://hackernoon.com/how-to-penetrate-into-the-blockchain-space-as-a-developer-without-having

https://cdn-images-1.medium.com/max/1000/1*3SMTSBXg9C-qaujl5j8eNQ.jpeg

Lets go through various entry points into the Blockchain space“The journey of a thousand miles begins with one step.”This is one of my favourite quote from the ancient Chinese philosopher Laozi. The purpose of this article is to get you taking that step.The year is 2019 and Blockchain has the potential to emerge as one of the most disruptive technology known to mankind. Some of you might argue that AI is more disruptive, however in order to reach singularity we will require several breakthroughs in the field and I am not sure if that is going to happen in our lifetime.Blockchain on the other hand is where I see the low hanging fruits are. The technology has matured and its applications such as cryptocurrency, ICO, STO, digital identity, smart contracts has already begin mass (...)

#blockchain-technology #blockchain-startup #hyperledger #blockchain-development

Transforming #healthcare: #blockchain based Medical prescription tracking
▻https://hackernoon.com/transforming-healthcare-blockchain-based-medical-prescription-tracking-5

https://cdn-images-1.medium.com/max/700/1*HaHDSrJ1ZavJvnn8KzEgZA.jpeg

credtis — google.comThe directions in which blockchain technology is evolving, health care holds a prominent position. And there are a number of good reasons for its prominence. Companies in healthcare and other industries are already testing waters and developing solutions on Blockchain.The MediLedger Project, backed by a group of companies that includes pharma giants Genentech and Pfizer, has successfully piloted a program that uses blockchain to track medicines. They aim to track the entire supply chain of medicine from the manufacturer uptill the patient.Blockchain technology is seeing great success in real-world applications that utilize supply chains. Given the very nature of the immutable and distributed ledger enabled by blockchain, the potential for using the revolutionary new (...)

#hyperledger #healthcare-technology #smart-contracts

#hyperledger Fabric + Convector + Convector CLI (JavaScript only)
▻https://hackernoon.com/hyperledger-fabric-convector-convector-cli-javascript-only-f4a0919b11c1?

https://cdn-images-1.medium.com/proxy/1*mP2ySaH2Phsm3chXGzcPRw@2x.png

Are you new to #blockchain? You may have probably already heard about the amazing work that the Linux Foundation has done with Hyperledger Fabric. It’s a modular framework for building permissioned blockchain networks.Here I want to showcase how to create your own smart contract system in an easier way that you would expect. And with the only #javascript!I will use as a baseline the design from the Fabric-Sample repo FabCar, I won’t change its design, only migrate the code to Convector Framework.As the title mentions, I’ll be using the new Convector CLI with Hyperledger Fabric as the underlying blockchain technology.npm i -g @worldsibu/convector-cliconv new fabcar -c carcd fabcarnpm iWhat you get by running that command is a whole JavaScript structure for a Fabric smart contract (...)

#development #smart-contracts

A 101 Noob Intro to Understanding Smart Contracts on #hyperledger Fabric
▻https://hackernoon.com/a-101-noob-intro-to-understanding-smart-contracts-on-hyperledger-fabric-

https://cdn-images-1.medium.com/max/1024/1*pdowHDgujnZ7C26AEQiTWg.png

How do I get started with dapp (decentralized app) development on Hyperledger Fabric Platform?This is the question I get every time I do a talk about Hyperledger Fabric. So this post will serve as my official answer to those that have asked in the past, and those that will ask in the future ⏳. I will outline my favorite material that has helped me get a good grasp on Hyperledger Fabric, and #blockchain in general. I will first start with general blockchain concepts as implemented by Bitcoin and then move towards more specific Hyperledger reading materials. Having a solid understanding of how Bitcoin works, and the public key cryptography that Bitcoin uses to transact securely without double-spending is essential to understanding how Hypereledger works.Blockchain 101☕️+ ?= understanding (...)

#ethereum #smart-contracts #dapps

#hyperledger Composer has been put on pause, what are your options now?
▻https://hackernoon.com/hyperledger-composer-has-been-put-on-pause-what-are-your-options-now-dfc

https://cdn-images-1.medium.com/max/756/1*uAv_ThkuNxOFUc5Xnnbahw.png

Pretty recently the team from Hyperledger Composer posted a relevant note for any software developer creating on top of Composer. Its content could be quite shocking for a lot people in the community, since the project has always proven to be so robust.Basically what Simon outlines in the note, posted on August 30, 2018, is that even though a lot of efforts has been invested in the Composer project, they will mostly stop bringing new features to it. In synthesis the main reasons are regarding its growing architecture and the difficulties to maintain it. According to the note, they will focus more on bringing more features straight to Fabric (which is great for all of us!).“The IBM team will continue to update Composer to maintain compatibility with the latest Fabric v1.x releases, and we (...)

#hyperledger-composer #javascript #blockchain #smart-contracts

Private data, a built-in “GDPR compliant” solution for #hyperledger Fabric
▻https://hackernoon.com/private-data-a-built-in-gdpr-compliant-solution-for-hyperledger-fabric-5

https://cdn-images-1.medium.com/max/1024/1*0DBzcfl78ir2LqOVVzK3Cg.png

The next release of Hyperledger Fabric v1.2 (just released) introduces private data. This feature can fix a bunch of confidentiality issues which are present with the technology today. One of those is #gdpr compliancy. The following article requires some general Fabric knowledge. If you are not yet familiar with Hyperledger Fabric, I suggest you watch this video series or the introduction on the official documentation.Quick note: I’m not a GDPR expert. The way you implement this technology is not guaranteed to be GDPR compliant. But private data enables GDPR compliant #blockchain applications.What’s that? SideDBs? Private Data on a blockchain?The current way of implementing confidentiality is by using channels. It is discouraged to create a lot of channels for a large network just to (...)

#hyperledger-fabric #privacy

#blockchain 101 : #ledger to #hyperledger
▻https://hackernoon.com/blockchain-101-ledger-to-hyperledger-36836c4db1c1?source=rss----3a8144ea

https://cdn-images-1.medium.com/max/1024/1*-UVAPjTz1UC-aaSuOB_kzA.png

Blockchain 101: Ledger to HyperLedgerBlockchain, cryptography and cryptocurrencies maybe the terms which you might have heard and may seem to be daunting at first to anyone.However in this article, you’ll learn from scratch of how a blockchain network evolves with all the burden of security and trust left to the advanced cryptography.Without putting much emphasis on the word to word definitions of these things, let’s get started straightaway. You’ll get to know about the real meaning of a lot of things along the way.Suppose you have three friends — Alan, Bill and Steve. All four of you do transactions frequently. But since you live in different cities, it is not possible to pay in cash immediately. So we come up with an idea of creating and maintaining a LEDGER.LEDGERAll the transactions (...)

#ledger-to-hyperledger #bitcoin

Setting up RESTful API Server for #hyperledger Fabric With #nodejs SDK
▻https://hackernoon.com/setting-up-restful-api-server-for-hyperledger-fabric-with-nodejs-sdk-a46

https://cdn-images-1.medium.com/max/1024/1*V9KZS6iwrwlhfhsfSba8Ig.png

Learn how to setup a NodeJS server for your #blockchain network to allow multiple users to interact with the chain easily.In our previous article, we learnt about writing your first simple Hyperledger Fabric Chaincode in Go and how to set up your development environment for Hyperledger Fabric. This article focuses on how to build a NodeJS Server with ExpressJS for your Hyperledger Fabric Network.PRE REQUISITESBefore I jump in any further into this article, I will assume that you’re familiar with setting up the network with multiple organisations and also assume that there is a network already running on your machine. (If not please follow our previous articles in completing them.)It’s also great if you have prior experience in the following,JavaScript OOP conceptsJavascript PromiseServer (...)

#dlt #hyperledger-fabric