Crypto Wiki

A parachain is an independent blockchain that runs parallel to a main chain (referred to as the relay chain) in a multi-chain network such as Polkadot or Kusama. 

A paper wallet is a physical document containing a public address and private key, typically printed as QR codes, used to store cryptocurrencies offline. 

PancakeSwap is a decentralized exchange (DEX) built on the Binance Smart Chain (BSC).

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.