Bitcoin is the world's first decentralized digital currency, running on blockchain technology without a single issuer or intermediaries. It is the foundational asset of the entire cryptocurrency market.

Blockchain is a distributed database in the form of a chain of linked blocks. Its records are protected by cryptography and stored on many computers, which makes the data practically immutable.

A blockmaker is a professional participant in a decentralized network who stores a full copy of the blockchain and helps maintain its operation, verify transactions and form new blocks.

Coin age is a metric calculated as the amount of cryptocurrency multiplied by the time it has been held. The concept is used in proof-of-stake mechanisms.

An input is the part of a transaction in the Bitcoin blockchain that indicates the source of the funds being transferred. The input links the new transaction to previous coin receipts at the sender's address.