Exploration and Practice of the Acquisition Path of Spoken English for Special Purposes with the Blockchain Technology

Table 1

Key data structure.

Variable	Type	Describe
Depth	int	The depth of the extension key
Parent	int	Summary of the extension key parent key
Sequence	int	The sequence used to generate the extension key
Chaincode	byte	The MAC key used to generate the subkey
Masterkey	Key	Key information in the extension key