Web3 Glossary
Beginner Terms (Foundational)
Web3
The next evolution of the internet where users own their identity, data, and digital assets instead of platforms controlling them.
The next evolution of the internet where users own their identity, data, and digital assets instead of platforms controlling them.
Blockchain
A shared, tamper-resistant digital ledger maintained by many computers that records transactions and data permanently.
A shared, tamper-resistant digital ledger maintained by many computers that records transactions and data permanently.
Wallet
A digital tool that stores private keys and allows users to prove ownership, sign transactions, and access Web3 apps.
A digital tool that stores private keys and allows users to prove ownership, sign transactions, and access Web3 apps.
Public Address
A wallet’s visible identifier, similar to an account number. It can receive assets and be viewed by anyone.
A wallet’s visible identifier, similar to an account number. It can receive assets and be viewed by anyone.
Private Key
A secret cryptographic key that proves ownership of a wallet.
Whoever controls the private key controls the assets.
A secret cryptographic key that proves ownership of a wallet.
Whoever controls the private key controls the assets.
Custodial Wallet
A wallet where a third party (like an exchange) controls the private keys on behalf of the user.
A wallet where a third party (like an exchange) controls the private keys on behalf of the user.
Self-Custody
A model where the user controls their own private keys, and therefore their identity and assets.
A model where the user controls their own private keys, and therefore their identity and assets.
Transaction
A signed action recorded on a blockchain, such as sending tokens, minting an NFT, or voting.
A signed action recorded on a blockchain, such as sending tokens, minting an NFT, or voting.
Gas Fee
A small fee paid to process and validate transactions on a blockchain network.
A small fee paid to process and validate transactions on a blockchain network.
Intermediate Terms (How Web3 Works)
Smart Contract
Self-executing code deployed on a blockchain that automatically enforces rules and outcomes when conditions are met.
Self-executing code deployed on a blockchain that automatically enforces rules and outcomes when conditions are met.
dApp (Decentralized Application)
An application that runs on blockchain infrastructure instead of centralized servers.
An application that runs on blockchain infrastructure instead of centralized servers.
NFT (Non-Fungible Token)
A unique digital record that represents ownership, access rights, or licensing, verified on a blockchain.
A unique digital record that represents ownership, access rights, or licensing, verified on a blockchain.
Fungible vs Non-Fungible
- Fungible: interchangeable (e.g., currencies)
- Non-Fungible: unique and distinguishable (e.g., NFTs)
Token
A digital unit issued on a blockchain that can represent value, access, governance rights, or utility.
A digital unit issued on a blockchain that can represent value, access, governance rights, or utility.
Minting
The process of creating a new token or NFT and recording it on the blockchain.
The process of creating a new token or NFT and recording it on the blockchain.
Royalties
Automatically enforced creator payments, often embedded into NFT smart contracts.
Automatically enforced creator payments, often embedded into NFT smart contracts.
DAO (Decentralized Autonomous Organization)
A community-governed organization where rules, proposals, and voting are transparent and blockchain-based.
A community-governed organization where rules, proposals, and voting are transparent and blockchain-based.
Governance
The system by which decisions are proposed, voted on, and enforced within a Web3 protocol or DAO.
The system by which decisions are proposed, voted on, and enforced within a Web3 protocol or DAO.
Consensus
The method by which a blockchain network agrees on the current state of its ledger.
The method by which a blockchain network agrees on the current state of its ledger.
Advanced Terms (Architecture & Future Systems)
Immutability
The property of blockchains that makes recorded data extremely difficult or impractical to alter.
The property of blockchains that makes recorded data extremely difficult or impractical to alter.
Permissionless
A system that allows anyone to participate without approval from a central authority.
A system that allows anyone to participate without approval from a central authority.
On-Chain / Off-Chain
- On-chain: data or actions recorded directly on the blockchain
- Off-chain: data stored elsewhere but referenced or verified by the blockchain
Layer 1 (L1)
The base blockchain network itself, such as Ethereum.
The base blockchain network itself, such as Ethereum.
Layer 2 (L2)
Scaling solutions built on top of Layer 1 blockchains to improve speed and reduce costs.
Scaling solutions built on top of Layer 1 blockchains to improve speed and reduce costs.
Interoperability
The ability for different blockchains and systems to communicate and exchange value or data.
The ability for different blockchains and systems to communicate and exchange value or data.
Zero-Knowledge Proof (ZKP)
A cryptographic method that allows someone to prove something is true without revealing the underlying data.
A cryptographic method that allows someone to prove something is true without revealing the underlying data.
Digital Identity
A portable, wallet-based identity that can authenticate users, devices, or AI agents without centralized control.
A portable, wallet-based identity that can authenticate users, devices, or AI agents without centralized control.
Machine-to-Machine Economy
An economic model where devices and AI systems transact with each other autonomously using wallets and smart contracts.
An economic model where devices and AI systems transact with each other autonomously using wallets and smart contracts.
Digital Twin
A real-time digital representation of a physical object, system, or entity, often paired with blockchain identity.
A real-time digital representation of a physical object, system, or entity, often paired with blockchain identity.
Autonomous Agent
An AI system that can make decisions, execute smart contracts, and transact using a wallet.
An AI system that can make decisions, execute smart contracts, and transact using a wallet.
Trustless
A system that does not require trust in intermediaries because rules are enforced by code and cryptography.
A system that does not require trust in intermediaries because rules are enforced by code and cryptography.