Crypto Investing Glossary: 40 Terms Every Investor Should Know
Published 2026-07-30
Blockchain — A distributed, append-only public ledger that records transactions across a network of computers, forming the underlying technology behind most cryptocurrencies. Bitcoin — The first and largest cryptocurrency by market capitalization, launched in 2009. Altcoin — Any cryptocurrency other than Bitcoin. Ethereum — A blockchain platform supporting smart contracts and decentralized applications, using ETH as its native currency. Wallet — Software or hardware used to store private keys and manage cryptocurrency. Private key — A secret cryptographic key that grants control over associated cryptocurrency funds. Public key / address — A shareable identifier used to receive funds, derived from a private key. Hot wallet — A wallet connected to the internet. Cold storage — Keeping private keys entirely offline for security.
Mining — The process of validating transactions and securing a proof-of-work blockchain in exchange for rewards. Staking — Locking up cryptocurrency to help validate a proof-of-stake blockchain in exchange for rewards. Halving — A scheduled event that cuts Bitcoin's mining block reward in half roughly every four years. Block reward — Newly issued cryptocurrency paid to miners or validators for confirming a block. Gas fee — A transaction fee paid to process an action on the Ethereum network, denominated in gwei. Smart contract — Self-executing code deployed on a blockchain that runs automatically when conditions are met. DeFi — Decentralized finance; financial applications (lending, trading, etc.) built on blockchain smart contracts without a traditional intermediary. DEX — Decentralized exchange; a platform for trading crypto assets directly between wallets without a centralized intermediary.
Stablecoin — A cryptocurrency designed to maintain a stable value, typically pegged to a fiat currency like the US dollar. Market capitalization — The total value of a cryptocurrency's circulating supply. Circulating supply — The number of coins currently available and in public circulation. Whale — An individual or entity holding a large enough position to meaningfully influence market prices. Volatility — A statistical measure of how much an asset's price fluctuates over time. Bull market — A sustained period of rising prices. Bear market — A sustained period of declining prices. Drawdown — The percentage decline from a previous peak value. DCA (Dollar-Cost Averaging) — Investing a fixed amount at regular intervals regardless of price.
NFT — Non-fungible token; a unique, non-interchangeable digital asset recorded on a blockchain. Airdrop — A free distribution of tokens, often to existing wallet holders of a related project. Rug pull — A scam in which developers abandon a project and abscond with investor funds. 51% attack — A scenario where a single entity controls the majority of a blockchain's validating power, risking transaction manipulation. Fork — A change to a blockchain's protocol rules, which can be a minor software update or, in the case of a 'hard fork,' a split into two separate chains. Cost basis — The original value of an asset for tax purposes, used to calculate gain or loss upon sale. Capital gain / loss — The profit or loss realized upon selling an asset, calculated relative to its cost basis. ETF — Exchange-traded fund; a fund that trades on a stock exchange and, in crypto's case, may track an underlying cryptocurrency's price.
Monte Carlo simulation — A modeling technique that runs many randomized scenarios to estimate a range of possible outcomes. Sequence of returns risk — The risk that the order in which investment returns occur, not just their average, affects a withdrawal plan's success. Withdrawal rate — The percentage or dollar amount withdrawn from a portfolio over a given period, commonly discussed annually. Accumulation phase — A period of contributing to an investment before drawing income from it. Decumulation phase — A period of withdrawing income from an investment, the opposite of accumulation. Multisig wallet — A wallet requiring more than one private key to authorize a transaction. CBDC — Central Bank Digital Currency; a government-issued digital currency, distinct from decentralized cryptocurrencies. Custody — The arrangement by which crypto assets are held and secured, whether by the individual (self-custody) or a third party.
Frequently Asked Questions
Is this glossary exhaustive?
No — it covers 40 commonly used terms as a practical starting point. The crypto and blockchain space has extensive additional specialized vocabulary beyond what's covered here.
Where can I learn more about any specific term?
Many of these terms are covered in more depth in other articles on this site, including dedicated pieces on staking, cold storage, Monte Carlo simulation, and halving cycles.