Optional
accountaccount splits the key space into independent user identities
Optional
address_address_index is used as child index in BIP32 derivation
Optional
changechange is a constant used for public derivation. Constant 0 is used for external chain and constant 1 for internal chain.
Optional
coin_coin_type is a constant that improves privacy
Optional
purposepurpose is a constant set to 44' (or 0x8000002C) following the BIP43 recommendation
BIP44Params is used as path field in ledger item in Record.