Verification Code

In order to confirm the identity of the person entering an account, a verification code is given to a different device. It's used for two-factor authentication.

Pair

Exchange cryptocurrencies with each other, like the trading pair BTC/ETH.

Mainnet

A mainnet is a separate blockchain that operates on its own network using its own protocol and technologies.

Bitcoin Halving

A blockchain event known as a "halvening" (or "Bitcoin halving") causes block subsidies or rewards for validating transactions to be reduced by half.