Crypto Glossary

A plain-English reference for terms that appear throughout the AllCoinss research library. Definitions are intentionally concise and describe how concepts work, not whether a token or service is suitable for you.

Network, wallet and market terminology

Use the terms below as a reference while reading our guides. Where definitions depend on a particular platform or network, consult that service’s current technical documentation.

Term	Meaning
Blockchain	A shared record of transactions maintained under a network’s agreement rules.
Block confirmation	A signal that a transaction has been included in a block; the meaning of finality depends on the network.
Consensus	Rules and processes used by network participants to agree on valid transaction history.
Validator	A participant or system involved in proposing or checking transactions or blocks on some networks.
Public address	An identifier used to receive assets on a compatible network; it is not a secret credential.
Private key	Secret cryptographic material used to authorize activity. Possession can imply control over related assets.
Recovery phrase	A series of words that can restore access to a compatible wallet; it must be protected.
Custodial wallet	A service model in which a provider controls the keys or maintains account custody.
Self-custody	An arrangement in which the user directly manages the private keys or recovery credentials.
Gas / network fee	A charge paid to process an operation on a blockchain network.
Transaction finality	The point at which the network treats a transaction as sufficiently settled or irreversible.
Smart contract	Program code that executes according to defined conditions on a compatible network.
Token	A digital asset represented through a protocol or contract, often on a network with its own native asset.
Stablecoin	A token designed to track a target reference value, subject to issuer, reserve and market risks.
Bridge	A mechanism for moving value or representations of assets between networks; it introduces additional security assumptions.
DeFi	Financial-style applications built around blockchain protocols and smart contracts.
Liquidity	The ability to transact without causing a large adverse price change, given market conditions.
Order book	A record of buy and sell orders at different prices on a trading venue.
Spread	The difference between quoted buying and selling prices, or between comparable market quotes.
Slippage	The difference between an expected execution price and the price actually obtained.
Market capitalization	Price multiplied by a chosen measure of circulating supply; definitions and supply data should be checked.
Token unlock	An event when previously restricted tokens become transferable or otherwise available.
Staking	A process of committing assets to support certain network operations, typically with specific technical and economic risks.
Oracle	A method for supplying off-chain or external information to an on-chain application.
Token approval	Permission granted for a contract to use a specified token balance or allowance.
API key	A credential that lets software access an account or service according to granted permissions.
KYC	Know Your Customer: identity-verification requirements that may apply to regulated service providers.
Volatility	The degree of variation in asset prices over time; high volatility can increase the scale of gains and losses.

Where these terms appear

• Crypto Academy — foundational lessons on addresses, wallets and transactions.
• Cryptocurrencies & Markets — market structure, liquidity and token supply.
• Platforms & Tools — custody, costs and service comparisons.
• Blockchain & Web3 — protocols, smart contracts and decentralized applications.