Web 3.0 marks a new era of the Internet, characterized by decentralization and the integration of innovative technologies such as blockchain and NFTs. As this new ecosystem develops, it is crucial to familiarize oneself with the terms that make it up. This article presents a series of essential definitions to better understand this constantly evolving digital universe.
Cryptocurrency
A cryptocurrency is a digital currency created and governed by a set of immutable rules, often defined in smart contracts that ensure its functioning. Unlike currencies issued by central banks, cryptocurrencies are created and exchanged on decentralized networks. For example, Bitcoin has a fixed issuance cap of 21 million units, while other cryptocurrencies, like Tether, are designed to maintain a stable value, typically equivalent to that of the US dollar.
Blockchain
The blockchain functions as a transparent and tamper-proof digital ledger. Each transaction is recorded in a block and linked to the preceding ones, thereby creating a secure chain of information accessible to all. This system secures data by rendering any modification inevitably visible, and contributes to user trust as no single actor controls the network.
Web 3.0
Web 3.0 represents a major evolution of the Internet, focused on decentralization. While Web 1.0 consisted of static pages and Web 2.0 introduced dynamic content where users became creators, Web 3.0 allows creators to regain control over their content. Thanks to the wallet system, which serves as both a digital identity and payment method, users can interact securely and autonomously.
Metaverse
The metaverse evokes interconnected and persistent virtual worlds where users interact using avatars. These spaces, often in 3D, can be centralized as proposed by Meta (formerly Facebook) or decentralized, where ownership and freedom of action are promoted by NFTs and blockchain-based technologies. For example, Decentraland allows users to own virtual land and create their own digital environment.
NFT
NFTs, or non-fungible tokens, are certificates of digital authenticity for unique assets on the blockchain. Unlike traditional cryptocurrencies, which are interchangeable, each NFT represents a distinct piece of artwork or digital item. By owning an NFT, the buyer acquires exclusive rights to that asset, whether it be a piece of art, music, a sports moment, or even a meme.
Decentralization
Decentralization is a key principle of Web 3.0, aiming to transfer power from a central entity to a community of users. In a decentralized system, no single authority controls the entire network, allowing for fairer governance and active participation from all involved actors.
Token
A token is a digital asset representing a right of use or ownership in the crypto universe. It can be a cryptocurrency or an NFT, but not all tokens are interchangeable. For example, a token may grant access to specific features of a platform or represent a real asset in digital form.
Wallet
A wallet is an essential tool for storing and using cryptocurrencies. Acting as a digital wallet, it allows users to manage their assets and make transactions. There are hot wallets, connected to the Internet, and cold wallets, which store assets offline for greater security.
DeFi (Decentralized Finance)
DeFi, or decentralized finance, encompasses all financial services accessible via blockchain-based platforms, without centralized intermediaries. Access to these services is facilitated by technology, allowing anyone to invest, lend, or borrow entirely without the need for a traditional banking authority.
ICO (Initial Coin Offering)
An ICO, or initial coin offering, is a way for startups to raise funds in exchange for tokens. These tokens will later be used to access the project’s products or services. Although this process can offer great opportunities to investors, it also carries high risks.
Mint
The term mint refers to the action of creating an NFT on the blockchain. This action makes the NFT traceable and tamper-proof. Minting is often associated with the signing of a smart contract that defines the characteristics of the NFT and its ownership.
KYC (Know Your Customer)
KYC (Know Your Customer) is an identity verification procedure required before proceeding with investments, whether traditional or based on cryptocurrencies. Although important for combating fraud, this process is sometimes criticized by those who value anonymity in the cryptocurrency world.
Proof of Stake and Proof of Work
The transaction validation mechanisms on the blockchain are mainly classified into two categories: Proof of Stake (PoS) and Proof of Work (PoW). PoW, used by Bitcoin, requires computational power to add transactions, while PoS validates transactions based on the amount of tokens held. The latter is often more environmentally friendly.
Mining
Mining is the process by which users verify and add new transactions to a blockchain. These participants, called miners, use complex algorithms to secure the network and are rewarded in cryptocurrencies for their efforts.
Smart Contracts
Smart contracts are programs that execute on a blockchain, following predefined instructions. They allow for the automation of various transactions and ensure the security of exchanges through their immutability and the transparency of the blockchain.
Airdrop
An airdrop is a free distribution of tokens or NFTs, often conditioned by actions such as following on social media. They serve to promote a project and increase its visibility within the crypto community.
Cold Wallet
A cold wallet is an offline wallet that offers better security for storing private keys. This reduces hacking risks, as the information is not exposed to the Internet, aiding users in managing their funds.
DAO (Decentralized Autonomous Organization)
A DAO is a form of organization that operates through smart contracts defining governance rules. These rules are transparent and immutable, ensuring democratic decision-making through voting mechanisms within the community.
Stablecoin
A stablecoin is a cryptocurrency designed to maintain a stable value, often backed by a tangible asset such as the dollar or gold. This allows users to avoid the volatility common to traditional cryptocurrencies, offering a calmer alternative for trading.
