Crypto glossary
The terms you’ll meet in crypto, explained in plain language.
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Blockchain
A shared, append-only ledger maintained by a network of computers.
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Bridge
A service that moves a token from one blockchain to another.
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Cold storage
Keeping private keys on a device or system that is not connected to the internet.
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Confirmation
A block added on top of the one containing your transaction.
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Custodial wallet
A wallet where a service holds the keys on your behalf.
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DeFi
Decentralised finance: financial apps that run on smart contracts.
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Derivation path
The route an HD wallet follows to turn one seed into many keys.
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Destination tag
An extra number some networks need to route a deposit to the right account.
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Gas
The fee paid to process a transaction on Ethereum-style networks.
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Halving
A scheduled cut in the new-coin reward for Bitcoin miners.
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Hash
A fixed-length fingerprint of data produced by a one-way function.
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Hot wallet
A wallet whose keys are on an internet-connected device.
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KYC
Know your customer: identity checks required by many financial services.
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Layer 2
A network built on top of a blockchain to make it faster and cheaper.
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Market cap
Price multiplied by circulating supply.
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NFT
A non-fungible token: a unique token representing a specific item.
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Network fee
What the blockchain charges to include your transaction.
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Private key
The secret number that authorises spending from an address.
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Public key
The shareable half of a key pair, used to derive addresses.
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Seed phrase
Twelve or twenty-four words that back up an entire wallet.
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Self-custody
Holding your own keys rather than trusting a service with them.
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Smart contract
Code deployed on a blockchain that runs exactly as written.
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Stablecoin
A token designed to hold a steady value, usually one US dollar.
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Staking
Locking coins to help secure a proof-of-stake network in exchange for rewards.
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TRC-20
The token standard on the TRON network.
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Token
An asset issued on top of an existing blockchain.
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Two-factor authentication
A second sign-in step on top of your password.
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Volatility
How sharply a price moves over time.
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Yield
Income earned on a crypto holding.
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