Crypto Wiki

Over-the-Counter (OTC) trading refers to the process of buying and selling assets directly between two parties, without the use of a centralized exchange.

An order book is a digital list of buy and sell orders for a specific asset, such as a cryptocurrency, organized by price level. 

Optimistic Rollups are Layer-2 scaling solutions for Ethereum that allow for faster and cheaper transactions by processing them off-chain and then posting transaction data back to the Ethereum mainnet.

OpenSea is the largest and most well-known peer-to-peer marketplace for non-fungible tokens (NFTs). 

One-Cancels-the-Other (OCO) is a type of order that combines two orders: one is a limit order, and the other is a stop order. 

On-chain refers to any transaction or data that is directly recorded and validated on the blockchain.

Off-chain refers to transactions or data that take place outside the blockchain network. 

In the context of blockchain, a nonce is a number that miners adjust to create a hash that meets the difficulty requirement of the network

Non-custodial refers to a type of cryptocurrency wallet or service where users retain full control over their private keys and funds.

A node is any device (computer, server, or phone) connected to a blockchain network that helps maintain the network by validating, storing, and broadcasting transactions.