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AddressStorage Object stored with the address as the KEY.

AliasPrefix storage alias used prefix.

CandidateAddrs Participates in the selection of the address set of block nodes.

The candidate node needs the total number of collateral COINS, unit 1drep.

StakeStorage With the address as the KEY, the relevant content is stored.

ErrInvalidateAlias set null string as alias.

ErrRecoverRoot recover root err.

ErrUsedAlias the alias has been used.