Multilingual fintech glossary for academic and production-grade learning.
Trace how crypto systems move from base-layer consensus to app-specific scaling and security assumptions.
Crypto infrastructure terms describe how value and state move through base-layer chains, execution environments, validators, sequencers, rollups, and wallet abstractions. This hub is built to connect protocol language with product-level implications.
Concepts such as MEV, oracle design, proof systems, and blind signing matter because they change trust boundaries. A term may look purely technical while actually determining who can extract value, reorder transactions, or compromise a wallet flow.
Layer 2, appchains, Bitcoin Layer 2, and account abstraction are not interchangeable labels. This hub exists to prevent that flattening and to show where scaling, programmability, and user experience diverge.
Coinbase
Coinbase Learn: Crypto glossary
Reference source for crypto infrastructure terminology.
European Commission
European Commission: Markets in Crypto-Assets (MiCA)
Primary source for MiCA regulatory framing.
Google Search Central
Google Search Central: Helpful, reliable, people-first content
Defines trust, helpfulness, and people-first expectations for YMYL-adjacent content.
Blockchain
Distributed ledger technology recording transactions.
Cryptocurrency
Digital or virtual currency secured by cryptography.
Bitcoin
First decentralized digital currency.
Ethereum
Blockchain platform enabling smart contracts.
Public Key
Code used to receive cryptocurrency.
Smart Contract
Self-executing contract with code.
Staking
Locking crypto to support network and earn rewards.
Gas Fee
Transaction fee on Ethereum network.
DApp
Decentralized Application running on a blockchain.
Altcoin
Any cryptocurrency other than Bitcoin.
Tokenomics
Economic model of a cryptocurrency token.
Seed Phrase
List of words to recover a crypto wallet.
Proof of Stake (PoS)
Consensus based on validators holding coins.
Whale
Individual holding a large amount of crypto.
HODL
Slang for holding crypto rather than selling.
Airdrop
Free distribution of cryptocurrency.
Initial Coin Offering (ICO)
Crowdfunding via crypto.
ERC-20
Standard for fungible tokens on Ethereum.
Sharding
Splitting blockchain aimed at scalability.
Layer 2
Protocol built on top of a blockchain.
Rollup
Scaling solution bundling transactions.
Atomic Swap
Exchanging cryptos without intermediaries.
Cold Storage
Keeping crypto offline.
Hard Fork
Radical change to blockchain rules.
Address
String allowing receiving of crypto.
Block Explorer
Tool to view blockchain data.
Faucet
Site giving free crypto.
Testnet
Alternative blockchain for testing.
Mainnet
The primary blockchain network.
Oracle
Service sending real-world data to blockchain.
Cross-Chain
Interoperability between blockchains.
Satoshi
Smallest unit of Bitcoin.
EIP
Ethereum Improvement Proposal.
Fiat On-Ramp
Service to buy crypto with fiat.
Fiat Off-Ramp
Service to sell crypto for fiat.
Fork
Split in the blockchain network.
Memecoin
Crypto based on a meme.
Flippening
Ethereum market cap surpassing Bitcoin.
Maximalist
Believer that only one crypto matters.
No-coiner
Someone who owns no crypto.
Merkle Tree
Tree of cryptographic hashes.
Genesis Block
First block of a blockchain.
zk-SNARK
Zero-Knowledge Succinct Non-Interactive Argument of Knowledge.
Sidechain
Blockchain linked to main chain.
Layer 1
Base blockchain protocol.
Validator
Participant in PoS.
Dusting Attack
Sending tiny crypto to track user.
EVM
Ethereum Virtual Machine.
Proto-Danksharding
Ethereum scaling proposal EIP-4844.
Account Abstraction
Smart contracts as wallets.
Modular Blockchain
Separating execution from consensus.
MEV
Maximal Extractable Value.
Oracles
Real world data for blockchain.
Privacy Coin
Crypto hiding transaction details.
Blobspace
Data storage for rollups.
Sequencer
Node ordering rollup transactions.
Base Layer
L1 blockchain.
Layer 0
Network infrastructure underlying Layer 1 blockchains.
Decentralized Identifier (DID)
Self-sovereign digital identity on blockchain.
Crypto Bridge
Protocol connecting two different blockchains.
Wrapped Bitcoin (WBTC)
ERC-20 token pegged to Bitcoin value.
Litecoin
Peer-to-peer cryptocurrency, silver to Bitcoin's gold.
Cardano
Proof-of-Stake blockchain platform.
Solana
High-performance blockchain using Proof of History.
Polkadot
Protocol connecting different blockchains.
Cosmos
Internet of Blockchains.
Arbitrum
Layer 2 scaling solution for Ethereum.
Optimism
Ethereum L2 scaling solution.
ZK-Rollup
Scalability using zero-knowledge proofs.
Satoshi (unit)
Smallest unit of Bitcoin.
Nominator
User delegating tokens to a validator.
Epoch
Time period in blockchain protocols.
Slashing
Penalty for validator misbehavior.
Whitepaper
Document explaining a crypto project.
Dust Attack
Sending tiny amounts of crypto to track wallets.
Hot Storage
Storing crypto online.
Proof of Authority (PoA)
Consensus based on reputation of validators.
Optimistic Rollup
Scaling solution assuming transactions are valid.
Proof of Reserves
A verification method showing that a custodian or exchange controls enough assets to back customer balances.
Blind Signing
Signing a transaction without fully decoding and reviewing the human-readable contents.
AppChain
A blockchain designed for a specific application or protocol rather than general-purpose usage.
BitVM
A proposed computation framework that expands what can be verified with Bitcoin scripts.
Bitcoin Layer 2
A protocol built above Bitcoin to improve scalability, programmability, or settlement speed.