A sidechain is a separate blockchain linked to the main (parent) network that allows assets to be moved between them. It extends the capabilities of the base chain without changing its protocol.

SegWit is an update to the bitcoin protocol that moves signature data outside the main part of the block, increasing its efficiency and helping to address scalability issues.

A mixing service, or mixer, combines and shuffles many transactions in order to make it harder to trace the origin and the path of the coins.

Coin burning is the deliberate and irreversible removal of part of the tokens from circulation. The mechanism reduces the supply of the asset and is often used to manage the issuance of a cryptocurrency.

Scrypt is a hashing algorithm underlying a number of cryptocurrencies. It was created to be more memory-intensive and was originally designed to resist specialized hardware.