What is Web3 and How Is It Connected to dApps?

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Web3 is the new generation of the internet based on decentralization, blockchain, and data ownership by users. dApps are one of the key technologies of Web3.

While Web2 refers to traditional websites and services like Google or Facebook, Web3 assumes that users:

Store their data (in a wallet);
Receive rewards for participation in projects;
Manage platforms through DAOs.

A decentralized application (dApp) is a Web3 application that operates without centralized control and gives users more power.

Do You Need to Go Through KYC to Use dApps?

In most cases, no. Decentralized applications do not require identity verification, registration, or email input. All you need is a crypto wallet.

However, some dApps (especially in DeFi or NFT sectors) might require KYC if they work with regulators or process large sums of money.

Centralized "gateways" into DeFi (e.g., through exchanges or fiat gateways) might also require identity verification.

What Do You Need to Create Your Own dApp?
Creating a dApp combines development, blockchain knowledge, and product thinking. Key steps include:

Choosing a blockchain: Ethereum is the standard, but others like Polygon, Avalanche, Solana, and Near are also options.
Writing smart contracts: Often in Solidity (for Ethereum). The contract manages the logic of the application.
Developing the frontend: This is the visual part that users will interact with (HTML/CSS/React + Web3/Ethers.js to connect to the contract).
Integrating Web3 wallets: Connect MetaMask, WalletConnect, and others.
Testing and auditing: Mandatory security checks on the code to avoid vulnerabilities.
Deployment: The contract is deployed to the blockchain, and the interface is hosted (often on IPFS), after which the dApp becomes accessible.

Creating a dApp is not only about technical work but also strategy: tokenomics, community building, legal aspects, and economic models.

What Role Do Smart Contracts Play in dApps?

Smart contracts are the foundation of any decentralized application. They are programs that automatically execute predefined conditions without human intervention.

For example: if a user sends a certain amount of tokens to a smart contract on an exchange, it will automatically send back another token at a predetermined rate.

Features of smart contracts on which decentralized applications are based:

Autonomous: Do not require intermediaries;
Immutable: Once deployed on the blockchain, the code cannot be changed;
Transparent: Any participant can access the code for analysis and verification.

What Is a Token Within a dApp and What Is Its Purpose?

Many decentralized applications have their own token that serves various functions:

Payment method within the platform;
Reward for participation;
Governance tool — tokens can be used to vote in a DAO;
Speculative asset, which can be bought, sold, or held.

For example: the UNI token in Uniswap allows users to vote on protocol changes and is also traded on exchanges.

How to Check If a dApp Is Reliable?

Checking the reliability of a decentralized application requires basic DYOR (Do Your Own Research):

Review smart contract audits — conducted by firms like CertiK, Hacken, Slowmist;
Check reviews and analytics on sites like DappRadar, DeFiLlama, CoinGecko;
Examine the team's activity on social media and the availability of open-source code on GitHub;
Find out which investors or partners support the project;

Check how much funds are locked (TVL) in the protocol. The higher the TVL, the more trust it generates.

Can dApps Disappear or Stop Working?

While dApps are considered decentralized, not all of them are fully independent. Some may have:

Centralized elements (e.g., web interface, data storage servers);
Contracts with administrative functions, allowing developers to make changes.

If the project is no longer supported, some functionality may disappear. However, if the smart contract is truly decentralized, it will continue to operate on the blockchain as long as the network exists.

Where Can You Find a List of dApps?

There are special platforms for discovering and analyzing decentralized applications:

DappRadar — dApp catalog with filters by blockchains, categories, and metrics;
DeFiLlama — DeFi project statistics and TVL;
State of the dApps — dApp library with ratings and updates;
Token Terminal — Web3 project revenue and activity analytics.

These sites let you follow trends, new launches, and popular projects.

Why Are Some Decentralized Applications More Popular Than Others?

The popularity of a dApp depends on several factors:

Interface and usability: The easier and more intuitive the application, the more users it attracts;
Liquidity and reliability: Especially important in DeFi. The more funds locked in the app, the higher the trust;
Team and reputation: Projects with well-known developers and strong community support become popular faster;
Own token: Through tokens, the app stimulates participation (e.g., through rewards, Airdrops, staking);
Scalability and cross-chain support: Supporting different blockchains (Ethereum, BNB, Arbitrum, Polygon, etc.) expands the audience.

Marketing and hype also play a significant role, as many dApps rise through active support on Twitter, YouTube, and forums.

How to Stay Safe When Using a Decentralized Application?

Although dApps promise decentralization and freedom, security is the user's responsibility. Here's what you should do:

Check the address: Phishing sites often disguise themselves as legitimate apps. Only visit links from official sources (e.g., CoinGecko, DappRadar).
Read what you sign: When interacting with a dApp, you confirm actions through your wallet. Carefully read the pop-up windows before clicking "Sign" or "Confirm."
Limit access: Do not grant dApps unlimited access to your tokens unless necessary.
Use cold and hot wallets: Keep your main funds in cold storage and create a separate wallet for dApp interactions.
Audit: Choose apps that have been audited by independent auditing firms (Certik, Slowmist, etc.).

Conclusion

dApps are innovative applications built on blockchain technologies that open new opportunities for users and developers. Their features, such as decentralization, security, and transparency, make them attractive to those seeking an alternative to traditional centralized systems. However, like any new technology, dApps face challenges that need to be overcome for wider adoption. In any case, the future of dApps looks promising, and they may become an integral part of our everyday lives in the future.

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