Web3
Web3
Web3 is the concept of the next stage of the internet built on blockchain, where users manage their data and assets through wallets and services run without a single central owner.
What is Web3?
Web3 describes a model of the internet in which the core infrastructure is built on distributed blockchain networks rather than on servers owned by one company. The term is usually contrasted with Web2: there, a platform holds users' accounts, data and money, while here cryptographic keys and wallets play the key role.
## How it works
A user connects a wallet to an application (dApp) and signs transactions or messages with their private key. The application's logic is written in smart contracts that execute automatically on the network. Identity is often tied to a wallet address rather than a login and password.
## Where it is used
Typical examples include decentralized exchanges and lending protocols (DeFi), NFT marketplaces, games with tokens, DAO-based governance systems, and social services where content and followers move between applications.
## Impact on high-risk verticals
For crypto projects, Web3 means a different cycle of user acquisition and retention: instead of registering with an email, users often connect a wallet. This changes anti-fraud, KYC flows and attribution, because one person can use several addresses and transactions are irreversible.
## Common mistakes
Confusing the term with any project on a blockchain, assuming decentralization automatically guarantees security, not auditing a smart contract before connecting a wallet, and approving signatures for unknown contracts. The word "Web3" is also often used in marketing with no real substance behind it.
FAQ
Is Web3 the same as cryptocurrency?
No. Cryptocurrency is one element of Web3, but the concept itself describes the architecture of applications and ownership of data. Web3 services can also operate without their own token.
Do you need a wallet to use Web3?
Yes, in most Web3 applications the wallet serves as both the account and the signing tool. It is important to store the seed phrase in a safe place, since recovering access through support is usually impossible.
How does Web3 differ from Web2?
In Web2, the platform controls data and access; in Web3, the user controls them through keys. The trade-off is that responsibility for mistakes and lost keys rests with the user.