Glossary
Key blockchain and cryptocurrency terms explained
189 terms
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What Is Public Key & Private Key? Complete 2026 Guide
Public Key & Private Key refers to a paired set of cryptographic codes—one openly shared, the other kept secret—that enable secure transactions and digital signatures in modern crypto systems.
What Is Blockchain? Complete 2026 Guide
Blockchain refers to a decentralized, tamper‑proof digital ledger that records transactions across a network of computers, enabling trust without a central authority.
What Is Bitcoin (BTC)? Complete 2026 Guide
Bitcoin (BTC) refers to the first decentralized digital currency, enabling peer‑to‑peer value transfer without banks or intermediaries.
What Is Ethereum (ETH)? Complete 2026 Guide
Ethereum (ETH) refers to a decentralized, programmable blockchain platform that enables smart contracts, dApps, and a thriving token ecosystem.
What Is Cryptocurrency? Complete 2026 Guide
Cryptocurrency refers to a digital, decentralized form of money that uses cryptographic techniques to secure transactions and control the creation of new units.
What Is Decentralization? Complete 2026 Guide
Decentralization refers to the distribution of authority and control across many independent nodes, eliminating a single point of failure and enabling trustless collaboration.
What Is Smart Contract? Complete 2026 Guide
Smart Contract refers to a self-executing code that automatically enforces the terms of an agreement on a blockchain.
What Is Consensus Mechanism? Complete 2026 Guide
Consensus Mechanism refers to the set of rules and processes that enable a decentralized network to agree on a single version of truth without a central authority.
What Is Hash? Complete 2026 Guide
Hash refers to a fixed-size string of characters generated from data of any length, used to verify integrity and secure information in cryptography and blockchain.
What Is Distributed Ledger? Complete 2026 Guide
Distributed Ledger refers to a synchronized, tamper‑resistant database spread across multiple participants, eliminating the need for a central authority.
What Is Node? Complete 2026 Guide
Node refers to any computer that participates in a blockchain network by storing, validating, or relaying data, enabling decentralized operation.
What Is Token? Complete 2026 Guide
Token refers to a digital asset built on a blockchain that represents value, rights, or functionality within a specific ecosystem.
What Is Whitepaper? Complete 2026 Guide
Whitepaper refers to a detailed, often technical document that outlines a blockchain project's purpose, technology, tokenomics, and roadmap.
What Is Gas Fee? Complete 2026 Guide
Gas Fee refers to the amount of Ether you pay to compensate miners or validators for processing transactions and executing smart contracts on the Ethereum network.
What Is Peer-to-Peer (P2P)? Complete 2026 Guide
Peer-to-Peer (P2P) refers to a decentralized network architecture where participants—called nodes—directly share resources or data without relying on a central server.
What Is Digital Signature? Complete 2026 Guide
Digital Signature refers to a cryptographic proof that validates the authenticity and integrity of a digital message or transaction.
What Is USDT (Tether)? Complete 2026 Guide
USDT (Tether) refers to a fiat‑pegged stablecoin that aims to keep its value equal to one US dollar by backing each token with reserves.
What Is USDC (USD Coin)? Complete 2026 Guide
USDC (USD Coin) is a regulated, fiat‑backed stablecoin that aims to combine the stability of the US dollar with the speed and programmability of blockchain.
What Is BNB (Binance Coin)? Complete 2026 Guide
BNB (Binance Coin) is the native utility token of the Binance ecosystem, used for fee discounts, token burns, and powering the BNB Chain.
What Is XRP (Ripple)? Complete 2026 Guide
XRP (Ripple) refers to a digital asset designed for fast, low‑cost cross‑border payments, built on the XRP Ledger and widely used by banks and fintech firms.
What Is Dogecoin (DOGE)? Complete 2026 Guide
Dogecoin (DOGE) is an inflationary, community‑driven meme coin that started as a joke but now powers everyday transactions and charitable causes.
What Is Solana (SOL)? Complete 2026 Guide
Solana (SOL) is a high‑performance blockchain that uses Proof of History to deliver fast, low‑cost transactions, making it popular for Decentralized Finance (DeFi), NFTs, and scalable dApps.
What Is Cardano (ADA)? Complete 2026 Guide
Cardano (ADA) is a peer‑reviewed, proof‑of‑stake blockchain platform that aims to deliver secure, scalable smart contracts and decentralized finance solutions.
What Is Polkadot (DOT)? Complete 2026 Guide
Polkadot (DOT) is a multi‑chain network that connects independent blockchains through a shared security layer, enabling seamless cross‑chain communication and scalable decentralized applications.
What Is Avalanche (AVAX)? Complete 2026 Guide
Avalanche (AVAX) is a high‑throughput, EVM‑compatible blockchain platform designed for DeFi, enterprise apps, and custom Subnets.
What Is Chainlink (LINK)? Complete 2026 Guide
Chainlink (LINK) refers to a decentralized oracle network that connects smart contracts with real-world data, APIs, and payment systems, enabling reliable off‑chain information for blockchain applications.
What Is Litecoin (LTC)? Complete 2026 Guide
Litecoin (LTC) refers to a peer‑to‑peer cryptocurrency designed for fast, low‑cost payments, often dubbed the silver to Bitcoin's gold.
What Is TRON (TRX)? Complete 2026 Guide
TRON (TRX) is a high‑throughput public blockchain platform that powers decentralized apps, content distribution services, and a growing ecosystem of DeFi solutions.
What Is Polygon (MATIC)? Complete 2026 Guide
Polygon (MATIC) refers to a multi‑chain scaling solution for Ethereum that combines sidechains, rollups and a native token to enable faster, cheaper transactions.
What Is Cosmos (ATOM)? Complete 2026 Guide
Cosmos (ATOM) refers to a blockchain ecosystem that enables interoperable, scalable app chains through the Tendermint consensus and IBC protocol.
What Is Aptos (APT)? Complete 2026 Guide
Aptos (APT) is a high‑performance layer‑1 blockchain that uses the Move language and parallel execution to deliver fast, low‑cost transactions for decentralized applications.
What Is Sui? Complete 2026 Guide
Sui is a high‑throughput Layer‑1 blockchain that uses the Move language and an object‑centric model to enable parallel transaction processing for scalable decentralized applications.
What Is TON (The Open Network)? Complete 2026 Guide
TON (The Open Network) is a high‑throughput, sharded blockchain originally spun out of Telegram, designed for fast payments, decentralized apps, and a vibrant Mini Apps ecosystem.
What Is Worldcoin (WLD)? Complete 2026 Guide
Worldcoin (WLD) refers to a biometric‑backed cryptocurrency and identity network that uses iris scanning to issue a unique World ID, aiming to create a global, permission‑less financial layer.
What Is DeFi (Decentralized Finance)? Complete 2026 Guide
DeFi (Decentralized Finance) refers to a blockchain‑based financial ecosystem that lets anyone access banking‑like services without traditional intermediaries.
What Is DEX (Decentralized Exchange)? Complete 2026 Guide
DEX (Decentralized Exchange) refers to a blockchain-based platform that lets users trade crypto assets directly, without a central intermediary.
What Is CEX (Centralized Exchange)? Complete 2026 Guide
CEX (Centralized Exchange) refers to a crypto exchange operated by a single company that controls user funds, order books, and trading services.
What Is AMM (Automated Market Maker)? Complete 2026 Guide
AMM (Automated Market Maker) refers to a decentralized protocol that uses smart contracts and liquidity pools to price and trade assets without a traditional order book.
What Is Liquidity Mining? Complete 2026 Guide
Liquidity Mining refers to the practice of earning rewards by providing assets to a decentralized exchange's liquidity pool, turning your capital into a yield-generating engine.
What Is Liquidity Pool? Complete 2026 Guide
Liquidity Pool refers to a smart‑contract‑based reserve of paired crypto assets that enables automated trading and swapping without a traditional order book.
What Is Impermanent Loss? Complete 2026 Guide
Impermanent Loss refers to the temporary reduction in value that liquidity providers experience when the price ratio of the assets in a Liquidity Pool diverges, compared to simply holding the assets.
What Is TVL (Total Value Locked)? Complete 2026 Guide
TVL (Total Value Locked) refers to the total dollar value of assets deposited in a DeFi protocol, serving as a quick health gauge for the platform.
What Is Yield Farming? Complete 2026 Guide
Yield Farming refers to the practice of locking or staking crypto assets in Decentralized Finance (DeFi) protocols to earn rewards, often through interest, fees, or native tokens.
What Is Flash Loan? Complete 2026 Guide
Flash Loan refers to an uncollateralized loan in Decentralized Finance that must be repaid within a single atomic transaction, enabling instant borrowing for arbitrage and other on‑chain strategies.
What Is Staking? Complete 2026 Guide
Staking refers to locking up cryptocurrency to support network security and earn staking rewards, turning passive holdings into a source of passive income.
What Is Lending Protocol? Complete 2026 Guide
Lending Protocol refers to a set of smart contracts that let users lend and borrow crypto assets in a trustless, over‑collateralized manner, powering the crypto lending ecosystem.
What Is Oracle? Complete 2026 Guide
Oracle refers to a service that brings off‑chain data onto a blockchain, enabling smart contracts to react to real‑world events.
What Is Liquidation? Complete 2026 Guide
Liquidation refers to the forced sale of a borrower’s crypto collateral when its value falls below a required threshold, ensuring lenders can recover their funds.
What Is Slippage? Complete 2026 Guide
Slippage refers to the difference between the expected price of a trade and the price at which it actually executes, often caused by market volatility, low liquidity, or large order size.
What Is Liquid Staking? Complete 2026 Guide
Liquid Staking refers to the process of staking blockchain assets while receiving a tradable token that represents the staked value, unlocking liquidity for DeFi use.
What Is Lido? Complete 2026 Guide
Lido is a liquid staking protocol that lets users earn Ethereum rewards while keeping their assets tradable as stETH.
What Is Uniswap? Complete 2026 Guide
Uniswap is a decentralized exchange (DEX) that uses an automated market maker model to let anyone trade ERC‑20 tokens without a traditional order book.
What Is Aave? Complete 2026 Guide
Aave is a decentralized finance (DeFi) lending protocol that lets users earn interest or borrow assets without a traditional intermediary.
What Is Compound? Complete 2026 Guide
Compound is a decentralized finance lending platform that lets users earn interest on crypto assets or borrow against them, governed by the COMP token.
What Is Curve Finance? Complete 2026 Guide
Curve Finance is a Decentralized Finance (DeFi) platform that specializes in low‑slippage stablecoin swaps, offering a Curve DEX powered by the CRV token to maximize capital efficiency for traders and liquidity providers.
What Is NFT (Non-Fungible Token)? Complete 2026 Guide
NFT (Non-Fungible Token) refers to a unique digital asset recorded on a blockchain that can represent art, collectibles, or any item where individuality matters.
What Is Minting? Complete 2026 Guide
Minting refers to the process of creating a new digital token or NFT on a blockchain, permanently recording it as a unique, tradable asset.
What Is Metaverse? Complete 2026 Guide
Metaverse refers to a persistent, interoperable virtual world where users interact, create, and trade digital assets, often powered by blockchain and crypto.
What Is GameFi? Complete 2026 Guide
GameFi refers to the fusion of gaming and decentralized finance, letting players earn crypto rewards through play-to-earn mechanics on blockchain platforms.
What Is Crypto Wallet? Complete 2026 Guide
Crypto Wallet refers to a software or hardware tool that stores private keys, enabling users to send, receive, and manage cryptocurrency on the blockchain.
What Is Hot Wallet? Complete 2026 Guide
Hot Wallet refers to a software-based cryptocurrency storage solution that remains connected to the internet, offering instant access for trading, payments, and DeFi interactions, but comes with heightened security considerations.
What Is Cold Wallet? Complete 2026 Guide
Cold Wallet refers to an offline device or method that stores private keys away from the internet, offering the highest level of security for crypto assets.
What Is Seed Phrase? Complete 2026 Guide
Seed Phrase refers to a human‑readable list of words that lets you restore a crypto wallet and access its private keys.
What Is MetaMask? Complete 2026 Guide
MetaMask is a browser‑based cryptocurrency wallet that lets you manage Ethereum assets, interact with DeFi apps, and switch networks—all from a single extension.
What Is Multisig Wallet? Complete 2026 Guide
Multisig Wallet refers to a cryptocurrency wallet that requires multiple private keys to approve a transaction, boosting security and shared control.
What Is KYC (Know Your Customer)? Complete 2026 Guide
KYC (Know Your Customer) refers to the process of verifying a user’s identity to prevent fraud, money laundering, and ensure regulatory compliance in crypto and traditional finance.
What Is AML (Anti-Money Laundering)? Complete 2026 Guide
AML (Anti-Money Laundering) refers to the set of laws, regulations, and procedures designed to prevent criminals from disguising illegal funds as legitimate assets, especially within the crypto ecosystem.
What Is Mining? Complete 2026 Guide
Mining refers to the process of using computational power to validate transactions and secure blockchain networks, rewarding participants with newly minted cryptocurrency.
What Is Proof of Work (PoW)? Complete 2026 Guide
Proof of Work (PoW) refers to a consensus mechanism where miners solve computational puzzles to secure a blockchain and validate transactions.
What Is Proof of Stake (PoS)? Complete 2026 Guide
Proof of Stake (PoS) refers to a consensus mechanism where validators lock up tokens to secure the network, earn rewards, and replace energy‑hungry mining with staking.
What Is Hash Rate? Complete 2026 Guide
Hash Rate refers to the speed at which a miner or entire blockchain network can perform cryptographic hash calculations, measured in hashes per second.
What Is Mining Pool? Complete 2026 Guide
Mining Pool refers to a collective of miners who combine their hash power to solve blocks together and share rewards proportionally.
What Is Halving? Complete 2026 Guide
Halving refers to the scheduled cut in Bitcoin’s block reward, slashing new BTC issuance by 50% roughly every four years, shaping the BTC halving cycle and market dynamics.
What Is Difficulty Adjustment? Complete 2026 Guide
Difficulty Adjustment refers to the protocol‑level mechanism that automatically tunes mining difficulty to keep block times steady, ensuring Bitcoin’s security and network stability.
What Is Spot Trading? Complete 2026 Guide
Spot Trading refers to the immediate purchase or sale of cryptocurrency, where the transaction settles instantly at the current market price.
What Is Futures Trading? Complete 2026 Guide
Futures Trading refers to the practice of buying and selling contracts that lock in the price of an asset for future delivery, allowing traders to profit from price movements without owning the underlying.
What Is Leverage? Complete 2026 Guide
Leverage refers to borrowing capital to amplify the exposure of a trade, letting traders control a larger position than their own funds would allow.
What Is Liquidation (Rekt)? Complete 2026 Guide
Liquidation (Rekt) refers to the forced closure of a leveraged position in DeFi when collateral falls below the required threshold, often leaving traders getting rekt.
What Is Long & Short? Complete 2026 Guide
Long & Short refers to the opposing trading strategies of buying to profit from price rises and selling to profit from price drops, each with distinct risk profiles.
What Is Limit Order & Market Order? Complete 2026 Guide
Limit Order & Market Order refers to two fundamental ways traders instruct exchanges to fill a trade, with one setting a price ceiling or floor and the other demanding immediate execution.
What Is Stop Loss & Take Profit? Complete 2026 Guide
Stop Loss & Take Profit refers to a pair of automatic order types that lock in losses and secure gains, letting traders manage risk without watching the market 24/7.
What Is Candlestick Chart? Complete 2026 Guide
Candlestick Chart refers to a visual representation of price movement that displays open, high, low, and close values for each time interval, helping traders spot market sentiment at a glance.
What Is Order Book? Complete 2026 Guide
Order Book refers to a real‑time list of buy and sell orders for a cryptocurrency, showing price levels, volumes, and the bid‑ask spread.
What Is Trading Pair? Complete 2026 Guide
Trading Pair refers to the two cryptocurrencies listed together on an exchange, allowing you to trade one for the other at a specific exchange rate.
What Is Funding Rate? Complete 2026 Guide
Funding Rate refers to the periodic payment exchanged between long and short positions on a perpetual contract to keep the contract price aligned with the underlying spot market.
What Is Margin? Complete 2026 Guide
Margin refers to borrowing funds to amplify a crypto trade, letting you control a larger position than your own capital would allow.
What Is Maker & Taker? Complete 2026 Guide
Maker & Taker refers to the two roles traders play on an exchange, where makers add liquidity to the order book and takers remove it, influencing fee structures and market depth.
What Is P2P Trading? Complete 2026 Guide
P2P Trading refers to a decentralized marketplace where individuals directly exchange crypto assets using escrow services, bypassing traditional intermediaries and often leveraging diverse payment methods.
What Is Arbitrage? Complete 2026 Guide
Arbitrage refers to the practice of buying a crypto asset on one market and simultaneously selling it on another to lock in a risk‑free profit.
What Is Perpetual Contract? Complete 2026 Guide
Perpetual Contract refers to a futures‑style derivative with no expiry date, continuously settled via funding payments, allowing traders to hold leveraged positions indefinitely.
What Is Layer 1? Complete 2026 Guide
Layer 1 refers to the base blockchain architecture that processes and secures transactions directly on its own network, forming the foundational layer for all decentralized applications.
What Is Layer 2? Complete 2026 Guide
Layer 2 refers to a set of off‑chain techniques that boost transaction throughput and lower fees while still leveraging the security of a base blockchain.
What Is Rollup? Complete 2026 Guide
Rollup refers to a Layer 2 scaling technique that bundles many transactions into a single proof, posting it to the main chain to boost throughput while preserving security.
What Is ZK Rollup? Complete 2026 Guide
ZK Rollup refers to a layer‑2 scaling solution that bundles transactions off‑chain and validates them on‑chain with succinct zero‑knowledge proofs.
What Is Zero Knowledge Proof (ZKP)? Complete 2026 Guide
Zero Knowledge Proof (ZKP) refers to a cryptographic method that lets one party prove a statement is true without revealing any underlying data, boosting privacy and efficiency across blockchain applications.
What Is Lightning Network? Complete 2026 Guide
Lightning Network refers to a second-layer protocol that enables instant, low-fee Bitcoin transactions through off‑chain payment channels.
What Is Cross-Chain? Complete 2026 Guide
Cross-Chain refers to technologies that let assets and data move freely between separate blockchains, creating a unified ecosystem without sacrificing each chain's unique strengths.
What Is Sidechain? Complete 2026 Guide
Sidechain refers to an independent blockchain that runs alongside a main chain, using a two‑way peg to move assets while offering its own consensus and scaling benefits.
What Is Sharding? Complete 2026 Guide
Sharding refers to the process of splitting a blockchain into multiple smaller pieces called shards, allowing each piece to process transactions in parallel and dramatically boost overall network throughput.
What Is Arbitrum? Complete 2026 Guide
Arbitrum refers to an Optimistic Rollup Layer‑2 scaling solution for Ethereum that boosts throughput, slashes gas fees, and powers the ARB governance token.