SingleSidedReferral

Referral controller with standard specs,

• set_ref
  • Set referral of a specific address.
• ref_chains
  • Get a referral chain of a specific address. Default depth is 3.
• ref_of
  • Get a referrer of a specific address.
• has_ref
  • Get a boolean that state a specific address has a referrer or not.

IndexedReferral

Referral controller extended with referred address indexer, i.e. specific address can query list of addresses that address have referred.

• all_referred_of
  • Get all referral of a specific address.