Clear, beginner-friendly explanations of coins, wallets, and crypto concepts.
A flash loan lets you borrow with no collateral, on one condition: it must be repaid inside the same transaction. If it is not, the whole thing reverses as though it never happened — which is why the lender is never at risk, and why nothing like it exists outside crypto.
ConceptA governance token gives holders the right to vote on decisions about a protocol or project.
ConceptA hardware wallet is a physical device that stores your private keys offline, away from online threats.
ConceptA hash is a fixed-length fingerprint of data that helps secure and link information on a blockchain.
ConceptA honeypot token is a scam coin you can buy but not sell. The contract is coded to trap your funds while the price appears to climb.
ConceptA Layer 1 is a base blockchain, like Bitcoin or Ethereum, that settles transactions on its own network.
ConceptA Layer 2 is a network built on top of a base blockchain to make transactions faster and cheaper.
ConceptA ledger is a record of transactions, and in crypto it is shared across many computers rather than held centrally.
ConceptA market order executes immediately at the current price, while a limit order waits for a price you choose.
ConceptA liquidity pool is a shared pot of funds that lets people trade tokens directly through a smart contract.
ConceptA multisig wallet requires more than one key to approve a transaction, adding a layer of shared security.
ConceptA node is a computer that keeps a copy of the blockchain and helps verify transactions across the network.
ConceptA pending transaction is one that has been submitted but not yet confirmed. It is usually stuck because of a low fee or network congestion, and it typically resolves or fails on its own.
ConceptA phishing attack tricks you into revealing keys or approving harmful transactions by pretending to be something you trust.
ConceptA pig butchering scam is a long-con where a stranger builds a friendship or romance with you over weeks, then lures you into a fake crypto investment.
GlossaryA private key is the secret code that proves ownership and lets you spend your cryptocurrency.
ConceptA public key is a shareable code that lets others send you crypto, while its matching private key stays secret and controls the funds.
ConceptA rollup bundles many transactions together off the base chain and settles them as one, to improve scale.
GlossaryA seed phrase is a sequence of words that can fully restore your crypto wallet on any device.
ConceptA SIM swap is when an attacker takes control of your phone number to intercept text-message codes and break into accounts protected by SMS two-factor authentication.
GlossaryA smart contract is a self-executing program on a blockchain that automatically carries out agreed-upon rules.
ConceptA software wallet is an app or browser extension that stores your keys on an internet-connected device for easy access.
GlossaryA stablecoin is a cryptocurrency built to hold a steady value, usually pegged to the US dollar. There are three very different ways of achieving that, and the differences decide what can go wrong.
ConceptA mainnet is the live blockchain with real value, while a testnet is a practice version used for testing.
VaultTutor provides general educational content only. Nothing on this site constitutes financial, investment, or legal advice, or a recommendation to buy, sell, or hold any cryptocurrency. Cryptocurrency involves substantial risk of loss. Always do your own research and consult a licensed financial advisor before making investment decisions.
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