Terms and Definitions

Crypto currency means a digital asset, recording of which is decentralized; cryptography[i] is used to ensure consistency of the chain of transaction blocks in the Blockchain[i].
Cryptography means science studying techniques to secure confidentiality (impossibility of reading information by a third party), data integrity (impossibility of imperceptible information change), authentication (verification of the author’s authenticity or other object properties) as well as non-repudiation.
Blockchain means a public distributed ledger, which constitutes a sequential chain of generated transaction blocks built according to certain rules. At the same time, each subsequent block of the structure contains information about the previous block, so on the whole, the chain stores the entire history of completed transactions.