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Crypto & Web3
Glossary

Clear, concise definitions for blockchain, DeFi, and Web3 terms. No jargon, just understanding.

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Impermanent Loss

DeFi Terms

The temporary loss of funds experienced by liquidity providers in automated market makers (AMMs) due to volatility in the paired assets. It occurs when the price ratio of deposited...

Blockchain

Blockchain

A distributed, decentralized digital ledger that records transactions across many computers in a way that makes it nearly impossible to alter retroactively.

Bitcoin

Crypto Basics

The first and most well-known cryptocurrency, created in 2009 by an anonymous person or group using the pseudonym Satoshi Nakamoto.

DeFi

DeFi Terms

Decentralized Finance - financial services built on blockchain technology that operate without traditional intermediaries like banks.

NFT

NFTs

Non-Fungible Token - a unique digital asset that represents ownership of a specific item like art, music, or collectibles on a blockchain.

DAO

Governance

Decentralized Autonomous Organization - an organization represented by rules encoded as a computer program that is transparent and controlled by organization members.

Airdrop

Crypto Basics

A distribution of cryptocurrency tokens or coins to numerous wallet addresses, often used as a marketing strategy or to reward loyal users.

Consensus

Blockchain

The process by which nodes in a blockchain network agree on the current state of the ledger, ensuring all copies are synchronized.

Smart Contract

Blockchain

Self-executing contracts with the terms directly written into code, automatically enforcing and executing when predetermined conditions are met.

Distributed Ledger

Blockchain

A shared database maintained across multiple computers, where every participant holds a copy and updates are confirmed by the network instead of a single authority.

Block

Blockchain

A bundle of verified transactions added to a blockchain, including transaction data, a timestamp, and a cryptographic link to the previous block.

Block Height

Blockchain

The total number of blocks added to a blockchain since it started, used to identify a block's position in the chain.

Block Explorer

Blockchain

A tool that lets users view blockchain activity in real time, including wallet balances, transactions, fees, and confirmations.

Hash

Blockchain

A fixed-length output created from input data using a cryptographic function, used to secure blockchain data and detect tampering.

Cryptography

Blockchain

The use of mathematical techniques to secure information, sign messages, and verify ownership in blockchain systems.

Node

Blockchain

A computer connected to a blockchain network that helps maintain or verify the ledger.

Validator

Blockchain

A network participant that verifies transactions and helps add new blocks, typically in proof of stake systems.

Mining

Blockchain

The process of using computational power to validate transactions and create new blocks, most commonly in proof of work systems.

Proof of Stake

Blockchain

A consensus mechanism where validators secure the network by staking digital assets as collateral.

Proof of Work

Blockchain

A consensus mechanism where miners compete using computational power to validate blocks and secure the network.

Finality

Blockchain

The point at which a blockchain transaction is considered permanent and irreversible.

Fork

Blockchain

A change in a blockchain's protocol or transaction history that creates a split in network rules.

Hard Fork

Blockchain

A blockchain upgrade that is not backward-compatible, potentially creating a permanent split between old and new chains.

Soft Fork

Blockchain

A backward-compatible blockchain update where older nodes can still recognize the chain even without enforcing new features.

Genesis Block

Blockchain

The very first block in a blockchain, serving as the starting point of the ledger.

Layer 1

Blockchain

The base blockchain network that processes transactions and maintains security through its native consensus and ledger.

Layer 2

Blockchain

A scaling solution built on top of a Layer 1 blockchain to improve speed and reduce fees while inheriting base-layer security.

Cryptocurrency

Crypto Basics

A digital form of value that operates on blockchain networks rather than through banks, used for payments, investment, or network participation.

Digital Asset

Crypto Basics

Any asset that exists in digital form and carries value or utility, including coins, tokens, stablecoins, and NFTs.

Token

Crypto Basics

A digital asset created on top of an existing blockchain rather than running its own base chain, used for governance, utility, or rewards.

Altcoin

Crypto Basics

Any cryptocurrency other than Bitcoin, ranging from payment-focused coins to smart contract platforms and DeFi assets.

Stablecoin

Crypto Basics

A digital asset designed to maintain stable value relative to a reference asset, usually a fiat currency like the US dollar.

Token Supply

Crypto Basics

The amount of a specific digital asset that exists or may eventually exist, including circulating, total, or maximum supply.

Token Minting

Crypto Basics

The process of creating new tokens on a blockchain, increasing supply.

Token Burning

Crypto Basics

The permanent removal of tokens from circulation, often used to reduce supply or control inflation.

Gas Fee

Crypto Basics

The cost paid to process a transaction or execute an action on a blockchain, paid to validators or miners.

Wallet Address

Crypto Basics

A public identifier used to send or receive digital assets on a blockchain, similar to an account number but decentralized.

Public Key

Crypto Basics

A cryptographic key used to receive funds and verify digital signatures, mathematically linked to a private key.

Private Key

Crypto Basics

A secret cryptographic key that gives full control over a wallet and its assets, used to sign transactions.

Seed Phrase

Crypto Basics

A backup phrase, usually a series of words, that can restore a wallet and its private keys if lost.

Custodial Wallet

Crypto Basics

A wallet where a third party, like an exchange, controls the private keys on the user's behalf.

Non-Custodial Wallet

Crypto Basics

A wallet where the user holds their own private keys and has direct control over their assets.

Liquidity Pool

DeFi Terms

A pool of tokens locked in a smart contract used to support trading or other DeFi activity, replacing traditional order books.

Yield Farming

DeFi Terms

The practice of moving assets into DeFi protocols to earn rewards, interest, or fees, often by providing liquidity.

Staking

DeFi Terms

Locking digital assets into a network or protocol to support security or participation, often earning rewards in return.

Liquidity Mining

DeFi Terms

A reward system that pays users for providing assets to a DeFi protocol, often used to bootstrap new pools.

Automated Market Maker

DeFi Terms

A protocol that uses smart contracts and liquidity pools to price trades, allowing direct token swaps without an order book.

DEX

DeFi Terms

A decentralized exchange where users swap assets directly from their wallets, without a central platform custodying funds.

DEX Aggregator

DeFi Terms

A tool that searches across multiple decentralized exchanges to find the best price and routing for a trade.

Lending Protocol

DeFi Terms

A DeFi platform where users deposit assets and earn yield by supplying liquidity to borrowers, managed by smart contracts.

Borrowing Protocol

DeFi Terms

A DeFi platform where users borrow digital assets by posting other assets as collateral, managed automatically by smart contracts.

Collateral

DeFi Terms

An asset pledged to secure a loan or position, common in DeFi where crypto is locked before borrowing another token.

Overcollateralization

DeFi Terms

Depositing collateral worth more than the value of the asset being borrowed, common in DeFi to manage volatility risk.

Market Cap

Market

The total value of a cryptocurrency, calculated by multiplying its price by circulating supply.

Circulating Supply

Market

The number of tokens currently available in the market, excluding locked, burned, or unreleased tokens.

Fully Diluted Valuation

Market

An estimate of a project's value if all possible tokens were already in circulation, calculated using current price and maximum supply.

Crypto Portfolio

Market

The collection of digital assets an investor holds, which may include coins, tokens, stablecoins, or NFTs.

Bull Market

Market

A period when prices trend upward and market sentiment becomes optimistic, often attracting new participants and rising liquidity.

Bear Market

Market

A period of declining prices and weaker market sentiment, often following excess speculation.

Market Cycle

Market

The repeating pattern of expansion, peak, contraction, and recovery that financial markets move through over time.

Volatility

Market

How quickly and dramatically an asset's price changes over time, a defining feature of crypto markets.

Trading Volume

Market

The amount of an asset bought and sold during a given period, often used to gauge market activity and liquidity.

Technical Analysis

Market

The study of price charts, patterns, and indicators to evaluate market behavior and predict short-term trends.

Fundamental Analysis

Market

Evaluating a crypto project based on its technology, utility, adoption, and token design rather than price action.

Liquidity

Market

How easily an asset can be bought or sold without causing a major price change.

Decentralized Application

Web3

Software that runs on blockchain networks using smart contracts instead of relying on centralized servers.

dApp

Web3

Short for decentralized application, software that connects users to blockchain-based services through smart contracts.

Web3

Web3

An internet model built on decentralized networks, digital ownership, and blockchain-based identity, giving users more control over their assets and data.

Web3 Wallet

Web3

A wallet designed to connect directly to decentralized applications, storing private keys and signing onchain transactions.

Smart Contract Audit

Web3

A formal review of smart contract code to identify vulnerabilities, design flaws, and risks before deployment.

Oracle

Web3

A service that brings external data, like prices or events, into a blockchain so smart contracts can use real-world information.

Cross-Chain Bridge

Web3

A system that allows assets or data to move between different blockchains, connecting otherwise isolated ecosystems.

Token Standards

Web3

Technical rules that define how tokens behave on a blockchain, ensuring compatibility across wallets, exchanges, and dApps.

Digital Identity

Web3

Web3 systems that let users prove who they are or what they control online, often tied to wallets or decentralized credentials.

NFT Marketplace

NFTs

A platform where users can buy, sell, mint, or list non-fungible tokens, typically with wallet integration and metadata display.

Minting

NFTs

The process of creating a new blockchain asset, often used in the context of generating a new NFT onchain.

Royalties

NFTs

Payments creators may receive when an NFT is resold, typically programmed into the token or marketplace.

Metadata

NFTs

Descriptive information attached to an NFT, including its name, image, traits, and file links.

Digital Ownership

NFTs

The ability to prove control over an asset or record online, made possible by transparent blockchain records.

Governance Token

Governance

A digital asset that gives holders a role in voting on protocol upgrades, treasury decisions, or community direction.

On-Chain Governance

Governance

Decision-making systems where votes are submitted and recorded directly on the blockchain through smart contracts.

Off-Chain Governance

Governance

Decision-making that happens outside the blockchain, usually in forums or communities before changes are implemented onchain.

Proposal

Governance

A formal suggestion for changing a protocol, allocating treasury funds, or adjusting community rules, typically submitted for governance voting.

Voting Mechanism

Governance

The process a DAO or protocol uses to collect and count governance decisions, often based on token ownership or delegated votes.

Crypto Security

Security

The practices, tools, and systems used to protect blockchain assets and activity, including wallets, smart contracts, and user awareness.

Rug Pull

Security

A scam where developers or insiders remove liquidity or abandon a project after attracting funds, leaving holders with worthless tokens.

Flash Loan Attack

Security

A DeFi exploit where an attacker uses a large uncollateralized loan to manipulate a protocol's pricing or logic within a single transaction.

51 Percent Attack

Security

An attack where one participant or group controls most of a network's validation power and can censor or reorganize transactions.

Reentrancy Attack

Security

A smart contract exploit where a function is repeatedly called before its first execution finishes, often used to drain funds.

Private Key Security

Security

Practices for protecting the secret key that controls a wallet's assets, since exposure usually means permanent loss of funds.

Cold Storage

Security

Keeping private keys offline rather than connected to the internet, reducing exposure to online threats.

Hardware Wallet

Security

A physical device that stores private keys in an isolated environment and signs transactions without exposing them online.

Tokenized Assets

Emerging

Assets whose ownership or access rights are represented as blockchain-based tokens.

Real World Assets

Emerging

Physical or traditional financial assets, like real estate or bonds, represented onchain as tokens.

Zero Knowledge Proofs

Emerging

Cryptographic methods that let one party prove something is true without revealing the underlying data, used in privacy and scaling.

Rollups

Emerging

Layer 2 scaling systems that bundle many transactions together and settle them on a base blockchain to reduce congestion and fees.

Sidechains

Emerging

Separate blockchains connected to a main chain through bridges, processing transactions independently while interacting with the broader ecosystem.

Interoperability

Emerging

The ability of different blockchains or systems to communicate and exchange data or assets across ecosystems.

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