Bitcoin's public ledger is a publicly accessible record of all the network's transactions since its launch. Any participant can verify operations, which ensures the transparency of the blockchain.

A pump is the artificial inflation of a cryptocurrency's price through mass coordinated buying. The goal is to sharply raise the price so that the organizers can sell the asset for more.

A block reward is the reward a miner receives for successfully creating a new block in the blockchain. It consists of an issuance part and transaction fees and decreases periodically.

Namecoin is one of the first altcoins, created on the basis of Bitcoin's technology. Its purpose is the decentralized registration of names and domains, primarily in the censorship-resistant .bit zone.

A node is a computer with an installed client connected to a cryptocurrency network. Nodes exchange data, relay transactions and blocks and jointly maintain the operation of the decentralized network.