69+ essential cryptocurrency and blockchain terms explained in plain English. From beginner basics to advanced DeFi concepts.
Any cryptocurrency other than Bitcoin. Examples include Ethereum, Solana, and XRP. Most altcoins were created to improve on Bitcoin's limitations or serve different use cases.
A decentralized exchange protocol that uses mathematical formulas to price assets in liquidity pools instead of using an order book. Uniswap is the most famous AMM.
Free distribution of cryptocurrency tokens to wallet addresses, usually as a marketing strategy or reward for early users of a protocol.
The highest price a cryptocurrency has ever reached. Bitcoin's ATH was $108,000+ in early 2025.
The lowest price a cryptocurrency has ever traded at since its launch.
The first and largest cryptocurrency by market cap, created by Satoshi Nakamoto in 2009. Bitcoin operates on a decentralized blockchain and has a fixed supply of 21 million coins.
A prolonged period of declining prices, typically defined as a 20%+ drop from recent highs. In crypto, bear markets can see 70-90% drawdowns.
A distributed ledger technology that records transactions across a network of computers. Each 'block' contains transaction data and is cryptographically linked to the previous block.
An experimental token standard on the Bitcoin blockchain, similar to Ethereum's ERC-20, enabling fungible tokens to be created using Bitcoin Ordinals inscriptions.
A period of rising prices and positive investor sentiment. Crypto bull markets are often defined by Bitcoin breaking its previous ATH.
A type of price chart showing open, high, low, and close prices for a time period. Green candles indicate rising prices; red candles indicate falling prices.
A traditional crypto exchange operated by a company (e.g., Binance, Coinbase). Users trust the exchange to hold their funds, unlike a DEX.
The method by which a blockchain network agrees on the validity of transactions. Main types: Proof of Work (Bitcoin) and Proof of Stake (Ethereum).
An organization governed by smart contracts and token holders instead of traditional management. Members vote on proposals using governance tokens.
Financial services built on blockchain that operate without traditional intermediaries like banks. Includes lending, borrowing, trading, and yield farming protocols.
A peer-to-peer exchange that allows direct crypto trading without a central authority. Examples: Uniswap, dYdX, Jupiter. Users keep custody of their own funds.
A common crypto community phrase reminding investors to independently verify information before making investment decisions.
The most common token standard on the Ethereum blockchain. Defines rules that all Ethereum tokens must follow, making them compatible with wallets and exchanges.
The second-largest cryptocurrency, known for its smart contract functionality. Ethereum transitioned from Proof of Work to Proof of Stake in 'The Merge' in 2022.
The emotional anxiety of missing a profitable trade or investment opportunity. FOMO often drives irrational buying near market tops.
A change to a blockchain's protocol. A hard fork creates two separate chains (e.g., Bitcoin Cash from Bitcoin). A soft fork is backward-compatible.
Negative or misleading information spread to create fear in the market. Often used to suppress prices or manipulate sentiment.
Periodic payments between long and short traders in perpetual futures markets. Positive funding = longs pay shorts (bullish market). Negative = shorts pay longs.
The fee paid to validators/miners to process transactions on a blockchain. Ethereum gas fees fluctuate with network congestion. Layer 2 solutions aim to reduce gas costs.
A cryptocurrency that gives holders the right to vote on protocol changes, proposals, and treasury management in a DAO or DeFi protocol.
The programmed reduction of Bitcoin's block reward by 50% every ~4 years (~210,000 blocks). Halvings reduce new BTC supply and have historically preceded bull markets.
The total computational power used to mine and process transactions on a Proof of Work blockchain. Higher hash rate = more secure network.
A crypto term meaning to hold onto your cryptocurrency regardless of market volatility. Originated from a misspelled 'hold' post in 2013 on the Bitcoin Talk forum.
A fundraising method where new cryptocurrency projects sell tokens to early investors, similar to an IPO for stocks. Many ICOs in 2017-2018 were fraudulent.
A token launch on a decentralized exchange, giving the public immediate access to trade new tokens. More decentralized than an ICO.
The base blockchain protocol (e.g., Bitcoin, Ethereum, Solana). All transactions ultimately settle on L1. L1s face a trilemma: security, scalability, and decentralization.
A secondary framework built on top of a Layer 1 to improve scalability and reduce fees. Examples: Arbitrum, Optimism (Ethereum L2s), Lightning Network (Bitcoin L2).
Borrowing funds to increase position size. 10x leverage means a 10% price move results in a 100% gain or loss. High leverage dramatically increases liquidation risk.
When a leveraged position is forcibly closed because losses exceed the margin (collateral). In a 10x long position, a 10% price drop triggers full liquidation.
A smart contract holding reserves of two or more tokens used to facilitate trading on a DEX. Liquidity providers earn trading fees in return for depositing assets.
A trade that profits when the price goes up. 'Going long BTC at $60k' means you believe Bitcoin's price will rise above $60,000.
A trend-following momentum indicator that shows the relationship between two exponential moving averages. Used to identify trend reversals and momentum shifts.
Total market value of a cryptocurrency. Calculated as: Current Price × Circulating Supply. Bitcoin's market cap exceeds $1.8 trillion at its 2025 ATH.
The most popular Web3 wallet and browser extension. Allows users to interact with Ethereum dApps, store tokens, and connect to DEXs.
The process of validating transactions and adding them to a Proof of Work blockchain by solving complex mathematical puzzles. Miners earn block rewards and transaction fees.
A unique digital asset stored on a blockchain. Unlike fungible tokens (ETH, BTC), each NFT is one-of-a-kind and cannot be replaced by another identical token.
A computer that participates in a blockchain network by storing a copy of the blockchain data and validating transactions.
The study of blockchain data to understand market trends, whale behavior, and investor sentiment. Metrics include exchange flows, HODL waves, and miner activity.
A futures contract with no expiry date. Traders can hold perpetual positions indefinitely, paying or receiving funding rates based on market direction.
A cryptographic secret that proves ownership of a crypto wallet. Whoever holds the private key controls the funds. Never share your private key with anyone.
A consensus mechanism where validators lock up ('stake') cryptocurrency as collateral to validate transactions. More energy-efficient than Proof of Work. Used by Ethereum post-Merge.
The original consensus mechanism used by Bitcoin. Miners compete to solve complex puzzles, using significant computational power and energy to secure the network.
The public address derived from your private key — similar to an email address. You can share your public key to receive funds. It cannot be used to spend funds.
A Layer 2 scaling solution that bundles (rolls up) hundreds of transactions into a single transaction on the main chain. Types: Optimistic Rollups and ZK-Rollups.
A momentum oscillator measuring the speed and change of price movements on a 0-100 scale. RSI above 70 signals overbought; below 30 signals oversold conditions.
A crypto scam where developers abandon a project and run away with investor funds. Common in DeFi when developers drain liquidity pools or mint unlimited tokens.
A 12 or 24-word recovery phrase that gives complete access to a crypto wallet. If lost, your funds are permanently unrecoverable. Store offline and never digitally.
A trade that profits when the price goes down. Shorting BTC at $65k means you borrow and sell, hoping to buy back at a lower price.
Self-executing code stored on a blockchain that automatically enforces the terms of an agreement when conditions are met. The backbone of DeFi and NFTs.
A cryptocurrency pegged to a stable asset, usually the US dollar. Examples: USDT (Tether), USDC, DAI. Used to avoid volatility while staying in crypto.
Locking up cryptocurrency to support a Proof of Stake network's security and operations in exchange for rewards. Similar to earning interest on savings.
Price levels where buying (support) or selling (resistance) pressure historically reverses a price move. Key concepts in technical analysis for identifying entry/exit points.
The economic model of a cryptocurrency, including total supply, distribution, inflation rate, vesting schedules, and mechanisms that create or destroy value.
The total value of assets deposited in a DeFi protocol. A key metric for measuring the size and adoption of DeFi platforms.
USD Coin — a regulated, fully-backed stablecoin pegged 1:1 to the US dollar, issued by Circle. Widely used in DeFi and considered more transparent than USDT.
The world's largest stablecoin by market cap, pegged to the US dollar. USDT dominates crypto trading pairs globally but has faced scrutiny over reserve backing.
A participant in a Proof of Stake network who stakes cryptocurrency to verify transactions and add blocks. They earn staking rewards but can be slashed for malicious behavior.
A schedule that gradually releases tokens to team members, investors, or advisors over time. Designed to align long-term incentives and prevent immediate dumping.
WAGMI = 'We're All Gonna Make It' (optimism). NGMI = 'Not Gonna Make It' (skepticism about a decision or project). Common crypto community expressions.
Software or hardware that stores cryptocurrency private keys, allowing users to send, receive, and manage their digital assets. Types: hot (online), cold (offline).
The vision for a decentralized internet built on blockchain technology, where users control their own data and digital assets instead of corporations.
An entity holding a large amount of cryptocurrency, capable of significantly moving the market. Bitcoin whales typically hold 1,000+ BTC.
A technical document published by a crypto project explaining its technology, use case, tokenomics, and roadmap. First whitepaper: Bitcoin by Satoshi Nakamoto (2008).
A DeFi strategy of moving funds between protocols to maximize returns. Also called liquidity mining. Risks include smart contract exploits and impermanent loss.