A blockchain is a decentralized, distributed and public digital ledger that is used to record
transactions across many computers so that the record cannot be altered retroactively without the
alteration of all subsequent blocks and the consensus of the network.
DeFi short for Decentralized Finance, refers to financial services (like lending, trading,
borrowing) built on public blockchains (primarily Ethereum), without minimal human intervention.
HODL is a slang term in the cryptocurrency community for holding the cryptocurrency rather than
selling it. It originated from a typo of "hold" in a 2013 Bitcoin forum post.
A non-fungible token (NFT) is a unique digital identifier that cannot be copied, substituted, or
subdivided, that is recorded in a blockchain, and that is used to certify ownership and
authenticity.