Crypto & Finance Glossary
Your guide to understanding cryptocurrency and finance terminology. From Bitcoin basics to advanced DeFi concepts.
Showing 1–22 of 22 terms starting with "O"
O
Off-Chain
blockchainTransactions or data stored outside the main blockchain.
On-Balance Volume (OBV)
tradingA technical indicator that uses volume flow to predict price movements.
On-Chain
blockchainTransactions and data recorded directly on the blockchain.
On-Chain Analytics
tradingThe practice of analyzing blockchain data to understand market behavior, track whale movements, and identify trends.
On-Chain Inference
aiRunning machine learning model inference on or verified by a blockchain.
On-Chain Reputation
blockchainA system for evaluating an address's trustworthiness based on its blockchain activity history.
Opcode
blockchainOperation code.
Open Interest
tradingThe total number of outstanding derivative contracts (like futures or options) that haven't been settled.
Operator
blockchainIn the context of restaking and EigenLayer, an operator is an entity that runs infrastructure to validate AVSs (Actively Validated Services).
Optimism
blockchainAn Ethereum Layer 2 network that uses optimistic rollup technology to process transactions faster and cheaper while inheriting Ethereum's security.
Optimistic Rollup
blockchainA Layer 2 scaling solution that assumes all transactions are valid and only runs computation if someone challenges a transaction.
Options
tradingContracts giving the right, but not obligation, to buy (call) or sell (put) an asset at a set price before expiration.
Oracle
blockchainA service that brings external data onto the blockchain.
Oracle Manipulation
defiAn attack where a hacker manipulates the price data that oracles feed to smart contracts.
Oracle Network
blockchainA decentralized system of nodes that delivers real-world data to smart contracts.
Orca
defiA user-friendly DEX on Solana known for its clean interface and concentrated liquidity pools called Whirlpools.
Order Book
tradingA list of all buy and sell orders for an asset, organized by price.
Order Book Depth
tradingA visualization of all open buy and sell orders for an asset at different price levels.
Order Flow
tradingThe stream of buy and sell orders coming into a market, revealing who's trading and in what direction.
Order Flow Trading
tradingA trading approach focused on analyzing the actual buy and sell orders hitting the market rather than just looking at price charts.
OTC (Over-the-Counter)
tradingTrading done directly between parties rather than on an exchange.
Overcollateralization
defiRequiring borrowers to deposit more collateral than the amount they're borrowing.
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