How Decentralized Apps Can Work On Couchain

The invention of the Blockchain forever changed the concept of cryptocurrencies, specifically when it comes to decentralization. Transacting directly with users without the need of a central authority, in a secure way, is as revolutionary as it gets. One would predict, then, that this decentralized architecture would extend to other areas of the digital realm.
How DaPPs Can Run on Couchain
Decentralized applications, or DApps, are a new breed of software applications that utilize this new decentralized methodology. Before we delve deeper, though, we need to understand first how software applications used to work.
Software applications are divided into generally two parts: front-end and back-end. Front-end is what users see and interact with when they use the software. The back-end is the logic that is happening in the background, invisible to the user
Let’s take a website as an example. When users visit a website, what they see is the front end — the user interface. This page is rendered with code usually using HTML, CSS and Javascript. When you login and enter your username and password, it uses an API was a way of communicating and retrieving data from a database. In this case, it needs to check the username and password entered against the one in the database, to see if it is correct.
All of these reside on a server or group of servers controlled by a single entity, a central authority. This makes traditional applications closed source, where users don’t have access to their data and the application logic. Users trust that the central authority doesn’t mess with their data and transacts with them in a fair manner. And since everything is centralized, a point of failure exists. If the servers were to go down, the app will cease to function. Worst case is data can be compromised or stolen.
Decentralized applications aims to address these concerns. These types of applications have no central source; they exist in the Internet itself, with the entire code and data residing on computer nodes in the network. They inherit all the benefits of blockchains.
For comparison, let’s go back to our website example and make it into a decentralized website application. For one, the front-end code would work exactly the same, using the same language and technology as in traditional apps. The critical difference lies in the backend. Instead of a database, data exists on a blockchain. When the front-end needs to pull this data, it communicates with the blockchain via a smart contract.
Smart contracts are little pieces of code. When a condition is met, the smart contract executes that code and performs an action. In this case, the action may entail the retrieval of some data from the blockchain; in others, it issues tokens. In this respect, it functions pretty much like an API to communicate with the blockchain. The critical difference is that API exists on a central server, while smart contracts are located in the blockchain itself.
Notable Dos For Couchain-Hosted DaPPs
Decentralized apps take the security and immutable benefits of cryptocurrencies and apply it to software applications. But to be considered a DApp, there are a number of generally agreed criteria (although views on this may vary; the DApp field is too young to set any kind of standard just yet)
First important criteria is that it should be open source and autonomous. Open source makes the internal protocol and data of the application open to all nodes in the network, increasing trust among users. This means that all changes rely on consensus: everyone must agree to any revisions made to the application code. This prevents a single entity from controlling the application itself and defeats the purpose of decentralization.
Second is, as explained above, that all code, logic and data should be stored cryptographically in a blockchain on a distributed P2P network. DApps have no central point of failure. Should a node or number of nodes fail, the DApp will continue to run since the app and data still reside on other nodes. This makes DApps, by design, highly resistant to hacks and attacks that normally plague even the most heavily guarded centralized application servers.
The third criterion is that some sort of internal currency be used. In a decentralized app, a token or currency is used to incentivize owners of scarce resources in exchange for others to use these resources. Scarce resource can be anything from storage space, computing power, etc. In essence, this is what makes the whole system “run”. If Bitcoin miners (owners) weren’t paid tokens in exchange for a scarce resource (computing power) used to generate new blocks, the system won’t move.

The main platform for developing DApps is the Ethereum network through pioneering its smart contract feature. But a new platform playing in the emerging Blockchain 4.0 space is ready to take DApps to the next level. That platform is the Couchain network.
The Couchain Network is an upcoming Blockchain 4.0 platform that aims to improve the efficiency of existing blockchains. With it, real world DApps can be run with the benefit of seamless data flow and faster verifications.
Couchain merges ideas from centralization and decentralized applications with its Microservices API approach. This approach takes a traditional API and segregates it into components. Each component is self-existing and carries out its functions independently of others. This makes the component parts easy to understand, capable of deployment even if some nodes are down, guarded from unauthorized database access and are shielded from any system timeouts. In addition, it supports data sharding, increasing horizontal scalability and eliminating any one point of failure.
Ease of development is also a primary concern. Integration with popular programming languages like Java, coupled with its scalability, mean that Couchain can be easily adapted to institutions and corporations. This is important to increase the user base of Couchain and contribute to the overall success of its community. With its other robust features like seamless data flow, adaptive database and biometric security, Couchain represents what the next generation of usable Blockchain applications could be.
Decentralized applications are, without a doubt, going to play a big part in shaping the future of computing. With Couchain ushering in Blockchain 4.0, that future seems nearer than ever. For more information on Couchain, visit https://couchain.io
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