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dApps - Decentralized Apps | Meaning Of Decentralized Applications

Meaning of dApps - decentralized applications

dApps meaning - decentralized apps decentralized applications

Decentralized Applications: What Are They?

Decentralized applications (dApps) are digital applications or programs that exist and run on a blockchain or peer-to-peer network of computers rather than a single computer, and are not subject to the jurisdiction or control of a single authority.

Explanation of Decentralized Applications:

A typical web app, such as Uber or Twitter, runs on a computer system owned and operated by an organization, giving it complete control over the app and its operations. 

On one side, there may be multiple users, but the backend is controlled by a single organization.

DApps can run on either a peer-to-peer or a blockchain network. BitTorrent, Tor, and Popcorn Time, for example, are applications that run on computers that are part of a P2P network, in which multiple participants are consuming content, feeding or seeding content, or performing both functions at the same time.

In the context of cryptocurrencies, dApps operate on a blockchain network in a public, open-source, decentralized environment, free of control and interference from any single authority.

A developer, for example, could create a Twitter-like dApp and place it on a blockchain where any user could publish messages. No one, not even the app's creators, can delete the messages once they've been posted.

Decentralized applications do not have to be run on top of a blockchain network. 

Tor, BitTorrent, Popcorn Time, and BitMessage are examples of decentralized applications that run on a P2P network but not on a blockchain – which is a type of P2P network in and of itself (read more: Origins of Bitcoin and Web3).

Decentralized applications are pieces of software that communicate with the blockchain, which manages track of the state of all network actors. 

The interface of decentralized applications is similar to that of any website or mobile app today. 

The core logic of a decentralized application is represented by the smart contract. Smart contracts are blockchain building blocks that process information from external sensors or events and assist the blockchain in managing the state of all network actors.

A decentralized application's frontend represents what you see, while the backend represents the entire business logic. 

This business logic is represented by one or more smart contracts that interact with the blockchain. 

The frontend, as well as files such as a photo, video, or audio, could be hosted on decentralized storage networks like Swarm or IPFS. To render a webpage, traditional Web applications use HTML, CSS, and javascript or something similar. 

This page communicates with a centralized database that stores all of the data. When you use a service, such as Twitter, Facebook, Amazon, or Airbnb, the webpage will call an API to process your personal data and other necessary information stored on their servers in order to display it on the page. 

Because personalized data is stored on the service provider's server, user IDs and passwords are used for identification and authentication with low levels of security.


Front End API Database Front End API Database:

Decentralized applications are analogous to traditional Web applications. The frontend renders the page using the same technology as the backend. 

It includes a "wallet" that interacts with the blockchain. The wallet is in charge of cryptographic keys as well as the blockchain address. For user identification and authentication, public-key infrastructure is used. 

Instead of an API connecting to a database, a wallet so – ware initiates smart contract activities that interact with a blockchain: Website that is Web3 compliant:


Smart Contract (including wallet) Blockchain Front End:

Web3 applications, unlike Web2 applications, require a connection to the blockchain, which is managed by a special application known as a "wallet." 

It stores the private keys and blockchain address, which represent the unique 30 identities and point of reference. 

We will be unable to interact with the blockchain unless we have software that manages our digital identity. As a result, Web3 extends the current Web2 stack and introduces new application-level elements. 

In the backend, Web3 introduces a completely new infrastructure layer with which decentralized applications can interact – the decentralized protocol stack. 

Decentralized apps must include a component that manages a user's private keys, which are used to sign transactions on the blockchain's state layer.


Decentralized Apps vs. Web Apps:

Companies that provide web applications include Trello, Slack, and Twitter. Traditional web applications' usability is determined by two factors: the front end and the back end. 

Web applications use software that is hosted on centralized web servers rather than the device's local operating system. 

The HTTP protocol is used by devices and servers to communicate by coding messages. When you open Twitter in your web browser, for example, the feed on display (the front end) is drawn from data stored on the company's web server (the back end).

While the internet transports massive amounts of data via massive, centralized servers, a blockchain represents hundreds or even thousands of machines that share the transactional burden across a distributed network. 

Decentralized apps and websites use the same technology to render an internet page on the front end. On the back end, dApps communicate with their respective blockchain networks via a "wallet," which acts as a gateway to the blockchain ecosystem.

Wallets keep track of your blockchain address as well as the cryptographic keys required to identify and authenticate yourself. Instead of communicating with the blockchain via the HTTP protocol, 

DApp wallets trigger smart contracts that interact with the blockchain and execute transactions. A dApp, then, is the front-end user interface that communicates with smart contracts that transact on the blockchain, at which point the blockchain's distributed network of nodes validates and confirms the dApp data. 

While a well-designed decentralized application user experience may appear to be similar to that of a web app, it differs in that it lacks servers, HTTP, and potential censorship.


Criteria For Decentralized Apps:

Although it is clear that dApp architecture differs from traditional platforms, the definition of a dApp is still being developed. A dApp, on the other hand, generally meets the following four main criteria:

  • A dApp is completely open-source, with no entity controlling the majority of the coins or tokens. Changes to the protocol must be decided by consensus of its network users due to its open-source nature.
  •  The data from a dApp must be stored on a decentralized blockchain.
  •  A dApp must create digital assets that serve as proof of value.
  •  The assets of a dApp are distributed as network rewards.

 According to this definition, the Bitcoin blockchain is a dApp because it meets all four criteria. Let's go over the Bitcoin dApp criteria:

  • Bitcoin runs on open source code, no single entity owns the majority of bitcoin (BTC) in circulation, and governance is guided by the Proof-of-Work (PoW) consensus mechanism.
  •  Bitcoin and all of its data are stored on the blockchain.
  •  As a result of the mining process, Bitcoin generates coins that serve as proof of value.
  •  As a mining reward, Bitcoin distributes bitcoin cryptocurrency to miners.

Many cryptocurrencies can be considered rudimentary versions of dApps under this definition, even if they lack smart contract functionality and web interfaces. A blockchain can be considered a dApp in and of itself. Blockchains, such as Bitcoin, can host dApps with their own blockchains. Alternatively, non-blockchain-based dApps can be built on top of an existing blockchain, as is the case with many of the dApps that run on Ethereum.

Decentralized Apps in the Future:

Although Bitcoin is widely considered to be the first dApp, Ethereum has since emerged as the primary growth driver of the dApp ecosystem. This is due in large part to its smart contracts, network effect, and user base. 

As the decentralized finance (DeFi) market expands its use cases and adoption, dApps provide an important on-ramp to new audiences by deploying user interfaces that mimic traditional web applications while accessing blockchain's new capabilities. 

In this way, dApps are expanding the functionality of the internet through blockchain in a variety of ways.

Regardless of the underlying blockchain in use, interest in dApps is growing quickly — and the movement is just getting started. As blockchain technology advances, it is likely that finance, gaming, online markets, and social media will all become blockchain-based dApps.


Decentralized Finance - Meaning:

These are applications that focus on developing financial services with the help of cryptocurrencies. They provide services such as lending, borrowing, earning interest, and private payments – all without requiring any personal information.

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