EOS founder BM (Daniel Larimer) wrote “Rethinking Transactions as Proof of Stake”, saying that his new chain Fractally is enhancing TaPoS.
so that all encrypted transactions linked to the block are protected from brute force attacks and cost 50% less per transaction than EOSIO or HIVE. Among them, EOSIO and HIVE each use 6 bytes of TaPoS, while the new chain only needs 3 bytes.