Poloniex is one of the oldest centralized cryptocurrency exchanges, providing trading in a wide range of digital assets. The platform is known for its large number of trading pairs and support for many altcoins.

A confirmation is the inclusion of a transaction in a block of the blockchain and the fixing of its validity. The more confirmations a transfer gathers, the more reliably it is considered irreversible.

An ICO platform is a set of software tools and infrastructure that allow a project to prepare and conduct an initial coin offering: issue tokens, raise funds and manage the campaign.

Peercoin (formerly PPCoin) is an altcoin that was one of the first to combine the Proof-of-Stake and Proof-of-Work mechanisms.

Peer-to-peer (P2P, "equal to equal") is a model of decentralized interaction in which network participants exchange data and value directly, without a mandatory intermediary.