diff --git a/libraries/chain/db_block.cpp b/libraries/chain/db_block.cpp
index e2fc9aab..ef55fdc1 100644
--- a/libraries/chain/db_block.cpp
+++ b/libraries/chain/db_block.cpp
@@ -789,12 +789,14 @@ processed_transaction database::_apply_transaction(const signed_transaction& trx
 
    if( !(skip & (skip_transaction_signatures | skip_authority_check) ) )
    {
-      auto get_active = [&]( account_id_type id ) { return &id(*this).active; };
-      auto get_owner  = [&]( account_id_type id ) { return &id(*this).owner;  };
-      auto get_custom = [&]( account_id_type id, const operation& op ) {
+      auto get_active = [this]( account_id_type id ) { return &id(*this).active; };
+      auto get_owner  = [this]( account_id_type id ) { return &id(*this).owner;  };
+      auto get_custom = [this]( account_id_type id, const operation& op ) {
          return get_account_custom_authorities(id, op);
       };
-      trx.verify_authority( chain_id, get_active, get_owner, get_custom, get_global_properties().parameters.max_authority_depth );
+      trx.verify_authority( chain_id, get_active, get_owner, get_custom,
+                            MUST_IGNORE_CUSTOM_OP_REQD_AUTHS(head_block_time()),
+                            get_global_properties().parameters.max_authority_depth );
    }
 
    //Skip all manner of expiration and TaPoS checking if we're on block 1; It's impossible that the transaction is
diff --git a/libraries/chain/db_notify.cpp b/libraries/chain/db_notify.cpp
index f56e3d8b..649e4e4e 100644
--- a/libraries/chain/db_notify.cpp
+++ b/libraries/chain/db_notify.cpp
@@ -40,6 +40,7 @@
 #include <graphene/chain/vesting_balance_object.hpp>
 #include <graphene/chain/transaction_object.hpp>
 #include <graphene/chain/impacted.hpp>
+#include <graphene/chain/hardfork.hpp>
 
 
 using namespace fc;
@@ -49,8 +50,13 @@ using namespace graphene::chain;
 struct get_impacted_account_visitor
 {
    flat_set<account_id_type>& _impacted;
-   get_impacted_account_visitor( flat_set<account_id_type>& impact ):_impacted(impact) {}
-   typedef void result_type;
+   bool _ignore_custom_op_reqd_auths;
+
+   get_impacted_account_visitor( flat_set<account_id_type>& impact, bool ignore_custom_operation_required_auths )
+      : _impacted( impact ), _ignore_custom_op_reqd_auths( ignore_custom_operation_required_auths )
+   {}
+
+   using result_type = void;
 
    void operator()( const transfer_operation& op )
    {
@@ -136,7 +142,7 @@ struct get_impacted_account_visitor
    {
       vector<authority> other;
       for( const auto& proposed_op : op.proposed_ops )
-         operation_get_required_authorities( proposed_op.op, _impacted, _impacted, other );
+         operation_get_required_authorities( proposed_op.op, _impacted, _impacted, other, _ignore_custom_op_reqd_auths );
       for( auto& o : other )
          add_authority_accounts( _impacted, o );
    }
@@ -346,20 +352,17 @@ struct get_impacted_account_visitor
    }
 };
 
-void graphene::chain::operation_get_impacted_accounts( const operation& op, flat_set<account_id_type>& result )
-{
-  get_impacted_account_visitor vtor = get_impacted_account_visitor( result );
+void graphene::chain::operation_get_impacted_accounts( const operation& op, flat_set<account_id_type>& result, bool ignore_custom_operation_required_auths ) {
+  get_impacted_account_visitor vtor = get_impacted_account_visitor( result, ignore_custom_operation_required_auths );
   op.visit( vtor );
 }
 
-void graphene::chain::transaction_get_impacted_accounts( const transaction& tx, flat_set<account_id_type>& result )
-{
+void graphene::chain::transaction_get_impacted_accounts( const transaction& tx, flat_set<account_id_type>& result, bool ignore_custom_operation_required_auths ) {
   for( const auto& op : tx.operations )
-    operation_get_impacted_accounts( op, result );
+    operation_get_impacted_accounts( op, result, ignore_custom_operation_required_auths );
 }
 
-void get_relevant_accounts( const object* obj, flat_set<account_id_type>& accounts )
-{
+void get_relevant_accounts( const object* obj, flat_set<account_id_type>& accounts, bool ignore_custom_operation_required_auths ) {
    if( obj->id.space() == protocol_ids )
    {
       switch( (object_type)obj->id.type() )
@@ -406,12 +409,14 @@ void get_relevant_accounts( const object* obj, flat_set<account_id_type>& accoun
         } case proposal_object_type:{
            const auto& aobj = dynamic_cast<const proposal_object*>(obj);
            assert( aobj != nullptr );
-           transaction_get_impacted_accounts( aobj->proposed_transaction, accounts );
+           transaction_get_impacted_accounts( aobj->proposed_transaction, accounts,
+                                              ignore_custom_operation_required_auths);
            break;
         } case operation_history_object_type:{
            const auto& aobj = dynamic_cast<const operation_history_object*>(obj);
            assert( aobj != nullptr );
-           operation_get_impacted_accounts( aobj->op, accounts );
+           operation_get_impacted_accounts( aobj->op, accounts,
+                                            ignore_custom_operation_required_auths);
            break;
         } case withdraw_permission_object_type:{
            const auto& aobj = dynamic_cast<const withdraw_permission_object*>(obj);
@@ -462,7 +467,8 @@ void get_relevant_accounts( const object* obj, flat_set<account_id_type>& accoun
            } case impl_transaction_object_type:{
               const auto& aobj = dynamic_cast<const transaction_object*>(obj);
               assert( aobj != nullptr );
-              transaction_get_impacted_accounts( aobj->trx, accounts );
+              transaction_get_impacted_accounts( aobj->trx, accounts,
+                                                 ignore_custom_operation_required_auths);
               break;
            } case impl_blinded_balance_object_type:{
               const auto& aobj = dynamic_cast<const blinded_balance_object*>(obj);
@@ -507,6 +513,7 @@ void database::notify_changed_objects()
    if( _undo_db.enabled() ) 
    {
       const auto& head_undo = _undo_db.head();
+      auto chain_time = head_block_time();
 
       // New
       if( !new_objects.empty() )
@@ -518,7 +525,8 @@ void database::notify_changed_objects()
           new_ids.push_back(item);
           auto obj = find_object(item);
           if(obj != nullptr)
-            get_relevant_accounts(obj, new_accounts_impacted);
+            get_relevant_accounts(obj, new_accounts_impacted,
+                                  MUST_IGNORE_CUSTOM_OP_REQD_AUTHS(chain_time));
         }
 
         GRAPHENE_TRY_NOTIFY( new_objects, new_ids, new_accounts_impacted)
@@ -532,7 +540,8 @@ void database::notify_changed_objects()
         for( const auto& item : head_undo.old_values )
         {
           changed_ids.push_back(item.first);
-          get_relevant_accounts(item.second.get(), changed_accounts_impacted);
+          get_relevant_accounts(item.second.get(), changed_accounts_impacted,
+                                MUST_IGNORE_CUSTOM_OP_REQD_AUTHS(chain_time));
         }
 
         GRAPHENE_TRY_NOTIFY( changed_objects, changed_ids, changed_accounts_impacted)
@@ -549,7 +558,8 @@ void database::notify_changed_objects()
           removed_ids.emplace_back( item.first );
           auto obj = item.second.get();
           removed.emplace_back( obj );
-          get_relevant_accounts(obj, removed_accounts_impacted);
+          get_relevant_accounts(obj, removed_accounts_impacted,
+                                MUST_IGNORE_CUSTOM_OP_REQD_AUTHS(chain_time));
         }
 
         GRAPHENE_TRY_NOTIFY( removed_objects, removed_ids, removed, removed_accounts_impacted)
diff --git a/libraries/chain/hardfork.d/CORE_210.hf b/libraries/chain/hardfork.d/CORE_210.hf
new file mode 100644
index 00000000..0f285274
--- /dev/null
+++ b/libraries/chain/hardfork.d/CORE_210.hf
@@ -0,0 +1,6 @@
+// #210 Check authorities on custom_operation
+#ifndef HARDFORK_CORE_210_TIME
+#define HARDFORK_CORE_210_TIME (fc::time_point_sec(1893456000)) // Jan 1 00:00:00 2030 (Not yet scheduled)
+// Bugfix: pre-HF 210, custom_operation's required_auths field was ignored.
+#define MUST_IGNORE_CUSTOM_OP_REQD_AUTHS(chain_time) (chain_time <= HARDFORK_CORE_210_TIME)
+#endif
diff --git a/libraries/chain/include/graphene/chain/impacted.hpp b/libraries/chain/include/graphene/chain/impacted.hpp
index 2a22cbd1..3e070ce6 100644
--- a/libraries/chain/include/graphene/chain/impacted.hpp
+++ b/libraries/chain/include/graphene/chain/impacted.hpp
@@ -30,13 +30,12 @@
 
 namespace graphene { namespace chain {
 
-void operation_get_impacted_accounts(
-   const graphene::chain::operation& op,
-   fc::flat_set<graphene::chain::account_id_type>& result );
+void operation_get_impacted_accounts( const graphene::chain::operation& op,
+                                      fc::flat_set<graphene::chain::account_id_type>& result,
+                                      bool ignore_custom_operation_required_auths );
 
-void transaction_get_impacted_accounts(
-   const graphene::chain::transaction& tx,
-   fc::flat_set<graphene::chain::account_id_type>& result
-   );
+void transaction_get_impacted_accounts( const graphene::chain::transaction& tx,
+                                        fc::flat_set<graphene::chain::account_id_type>& result,
+                                        bool ignore_custom_operation_required_auths );
 
-} } // graphene::app
\ No newline at end of file
+} } // graphene::app
diff --git a/libraries/chain/include/graphene/chain/protocol/custom.hpp b/libraries/chain/include/graphene/chain/protocol/custom.hpp
index 5596aaad..6c3af926 100644
--- a/libraries/chain/include/graphene/chain/protocol/custom.hpp
+++ b/libraries/chain/include/graphene/chain/protocol/custom.hpp
@@ -50,6 +50,9 @@ namespace graphene { namespace chain {
       account_id_type   fee_payer()const { return payer; }
       void              validate()const;
       share_type        calculate_fee(const fee_parameters_type& k)const;
+      void              get_required_active_authorities( flat_set<account_id_type>& auths )const {
+         auths.insert( required_auths.begin(), required_auths.end() );
+      }
    };
 
 } } // namespace graphene::chain
diff --git a/libraries/chain/include/graphene/chain/protocol/operations.hpp b/libraries/chain/include/graphene/chain/protocol/operations.hpp
index 1285d353..95e25095 100644
--- a/libraries/chain/include/graphene/chain/protocol/operations.hpp
+++ b/libraries/chain/include/graphene/chain/protocol/operations.hpp
@@ -166,10 +166,11 @@ namespace graphene { namespace chain {
     *
     *  @return a set of required authorities for @ref op
     */
-   void operation_get_required_authorities( const operation& op, 
+   void operation_get_required_authorities( const operation& op,
                                             flat_set<account_id_type>& active,
                                             flat_set<account_id_type>& owner,
-                                            vector<authority>&  other );
+                                            vector<authority>& other,
+                                            bool ignore_custom_operation_required_auths );
 
    void operation_validate( const operation& op );
 
diff --git a/libraries/chain/include/graphene/chain/protocol/transaction.hpp b/libraries/chain/include/graphene/chain/protocol/transaction.hpp
index ec8f3f53..5dbb7752 100644
--- a/libraries/chain/include/graphene/chain/protocol/transaction.hpp
+++ b/libraries/chain/include/graphene/chain/protocol/transaction.hpp
@@ -112,7 +112,10 @@ namespace graphene { namespace chain {
          return results;
       }
 
-      void get_required_authorities( flat_set<account_id_type>& active, flat_set<account_id_type>& owner, vector<authority>& other )const;
+      void get_required_authorities( flat_set<account_id_type>& active,
+                                     flat_set<account_id_type>& owner,
+                                     vector<authority>& other,
+                                     bool ignore_custom_operation_required_auths )const;
    };
 
    /**
@@ -142,6 +145,7 @@ namespace graphene { namespace chain {
          const std::function<const authority*(account_id_type)>& get_active,
          const std::function<const authority*(account_id_type)>& get_owner,
          const std::function<vector<authority>(account_id_type, const operation&)>& get_custom,
+         bool ignore_custom_operation_required_authorities,
          uint32_t max_recursion = GRAPHENE_MAX_SIG_CHECK_DEPTH
          )const;
 
@@ -150,6 +154,7 @@ namespace graphene { namespace chain {
          const std::function<const authority*(account_id_type)>& get_active,
          const std::function<const authority*(account_id_type)>& get_owner,
          const std::function<vector<authority>(account_id_type, const operation&)>& get_custom,
+         bool ignore_custom_operation_required_auths,
          uint32_t max_recursion = GRAPHENE_MAX_SIG_CHECK_DEPTH )const;
 
       /**
@@ -158,13 +163,13 @@ namespace graphene { namespace chain {
        * some cases where get_required_signatures() returns a
        * non-minimal set.
        */
-
       set<public_key_type> minimize_required_signatures(
          const chain_id_type& chain_id,
          const flat_set<public_key_type>& available_keys,
          const std::function<const authority*(account_id_type)>& get_active,
          const std::function<const authority*(account_id_type)>& get_owner,
          const std::function<vector<authority>(account_id_type, const operation&)>& get_custom,
+         bool ignore_custom_operation_required_auths,
          uint32_t max_recursion = GRAPHENE_MAX_SIG_CHECK_DEPTH
          ) const;
 
@@ -198,10 +203,11 @@ namespace graphene { namespace chain {
                           const std::function<const authority*(account_id_type)>& get_active,
                           const std::function<const authority*(account_id_type)>& get_owner,
                           const std::function<vector<authority>(account_id_type, const operation&)>& get_custom,
+                          bool ignore_custom_operation_required_auths,
                           uint32_t max_recursion = GRAPHENE_MAX_SIG_CHECK_DEPTH,
-                          bool allow_committe = false,
+                          bool allow_committee = false,
                           const flat_set<account_id_type>& active_aprovals = flat_set<account_id_type>(),
-                          const flat_set<account_id_type>& owner_approvals = flat_set<account_id_type>());
+                          const flat_set<account_id_type>& owner_approvals = flat_set<account_id_type>() );
 
    /**
     *  @brief captures the result of evaluating the operations contained in the transaction
diff --git a/libraries/chain/proposal_evaluator.cpp b/libraries/chain/proposal_evaluator.cpp
index ba714c21..2a378d5f 100644
--- a/libraries/chain/proposal_evaluator.cpp
+++ b/libraries/chain/proposal_evaluator.cpp
@@ -204,19 +204,20 @@ struct proposal_operation_hardfork_visitor
    }
 };
 
-void_result proposal_create_evaluator::do_evaluate(const proposal_create_operation& o)
+void_result proposal_create_evaluator::do_evaluate( const proposal_create_operation& o )
 { try {
    const database& d = db();
+   auto block_time = d.head_block_time();
 
-   proposal_operation_hardfork_visitor vtor( d.head_block_time() );
+   proposal_operation_hardfork_visitor vtor( block_time );
    vtor( o );
 
    const auto& global_parameters = d.get_global_properties().parameters;
 
-   FC_ASSERT( o.expiration_time > d.head_block_time(), "Proposal has already expired on creation." );
-   FC_ASSERT( o.expiration_time <= d.head_block_time() + global_parameters.maximum_proposal_lifetime,
+   FC_ASSERT( o.expiration_time > block_time, "Proposal has already expired on creation." );
+   FC_ASSERT( o.expiration_time <= block_time + global_parameters.maximum_proposal_lifetime,
               "Proposal expiration time is too far in the future.");
-   FC_ASSERT( !o.review_period_seconds || fc::seconds(*o.review_period_seconds) < (o.expiration_time - d.head_block_time()),
+   FC_ASSERT( !o.review_period_seconds || fc::seconds(*o.review_period_seconds) < (o.expiration_time - block_time),
               "Proposal review period must be less than its overall lifetime." );
 
    {
@@ -225,7 +226,8 @@ void_result proposal_create_evaluator::do_evaluate(const proposal_create_operati
       vector<authority> other;
       for( auto& op : o.proposed_ops )
       {
-         operation_get_required_authorities(op.op, auths, auths, other);
+         operation_get_required_authorities( op.op, auths, auths, other,
+                                             MUST_IGNORE_CUSTOM_OP_REQD_AUTHS(block_time) );
       }
 
       FC_ASSERT( other.size() == 0 ); // TODO: what about other??? 
@@ -248,18 +250,19 @@ void_result proposal_create_evaluator::do_evaluate(const proposal_create_operati
       }
    }
 
-   for( const op_wrapper& op : o.proposed_ops )
+   for (const op_wrapper& op : o.proposed_ops)
       _proposed_trx.operations.push_back(op.op);
    _proposed_trx.validate();
 
    return void_result();
 } FC_CAPTURE_AND_RETHROW( (o) ) }
 
-object_id_type proposal_create_evaluator::do_apply(const proposal_create_operation& o)
+object_id_type proposal_create_evaluator::do_apply( const proposal_create_operation& o )
 { try {
    database& d = db();
+   auto chain_time = d.head_block_time();
 
-   const proposal_object& proposal = d.create<proposal_object>([&](proposal_object& proposal) {
+   const proposal_object& proposal = d.create<proposal_object>( [&o, this, chain_time](proposal_object& proposal) {
       _proposed_trx.expiration = o.expiration_time;
       proposal.proposed_transaction = _proposed_trx;
       proposal.proposer = o.fee_paying_account;
@@ -273,7 +276,8 @@ object_id_type proposal_create_evaluator::do_apply(const proposal_create_operati
       
       // TODO: consider caching values from evaluate?
       for( auto& op : _proposed_trx.operations )
-         operation_get_required_authorities(op, required_active, proposal.required_owner_approvals, other);
+         operation_get_required_authorities( op, required_active, proposal.required_owner_approvals, other,
+                                             MUST_IGNORE_CUSTOM_OP_REQD_AUTHS(chain_time) );
 
       //All accounts which must provide both owner and active authority should be omitted from the active authority set;
       //owner authority approval implies active authority approval.
@@ -285,7 +289,7 @@ object_id_type proposal_create_evaluator::do_apply(const proposal_create_operati
    return proposal.id;
 } FC_CAPTURE_AND_RETHROW( (o) ) }
 
-void_result proposal_update_evaluator::do_evaluate(const proposal_update_operation& o)
+void_result proposal_update_evaluator::do_evaluate( const proposal_update_operation& o )
 { try {
    database& d = db();
 
diff --git a/libraries/chain/proposal_object.cpp b/libraries/chain/proposal_object.cpp
index a2f6d1ae..662c700a 100644
--- a/libraries/chain/proposal_object.cpp
+++ b/libraries/chain/proposal_object.cpp
@@ -24,12 +24,13 @@
 #include <graphene/chain/database.hpp>
 #include <graphene/chain/account_object.hpp>
 #include <graphene/chain/proposal_object.hpp>
+#include <graphene/chain/hardfork.hpp>
 
 namespace graphene { namespace chain {
 
-bool proposal_object::is_authorized_to_execute(database& db) const
+bool proposal_object::is_authorized_to_execute( database& db ) const
 {
-   transaction_evaluation_state dry_run_eval(&db);
+   transaction_evaluation_state dry_run_eval( &db );
 
    try {
       verify_authority( proposed_transaction.operations, 
@@ -38,6 +39,7 @@ bool proposal_object::is_authorized_to_execute(database& db) const
                         [&]( account_id_type id ){ return &id(db).owner;  },
                         [&]( account_id_type id, const operation& op ){
                            return db.get_account_custom_authorities(id, op); },
+                        MUST_IGNORE_CUSTOM_OP_REQD_AUTHS( db.head_block_time() ),
                         db.get_global_properties().parameters.max_authority_depth,
                         true, /* allow committee */
                         available_active_approvals,
diff --git a/libraries/chain/protocol/operations.cpp b/libraries/chain/protocol/operations.cpp
index 7db51078..385e14dc 100644
--- a/libraries/chain/protocol/operations.cpp
+++ b/libraries/chain/protocol/operations.cpp
@@ -53,25 +53,38 @@ struct operation_validator
 
 struct operation_get_required_auth
 {
-   typedef void result_type;
+   using result_type = void;
 
    flat_set<account_id_type>& active;
    flat_set<account_id_type>& owner;
    vector<authority>&         other;
+   bool                       ignore_custom_op_reqd_auths;
 
 
    operation_get_required_auth( flat_set<account_id_type>& a,
-     flat_set<account_id_type>& own,
-     vector<authority>&  oth ):active(a),owner(own),other(oth){}
+                                flat_set<account_id_type>& own,
+                                vector<authority>& oth,
+                                bool ignore_custom_operation_required_auths )
+       : active( a ), owner( own ), other( oth ),
+         ignore_custom_op_reqd_auths( ignore_custom_operation_required_auths )
+   {}
 
    template<typename T>
-   void operator()( const T& v )const 
-   { 
+   void operator()( const T& v ) const {
       active.insert( v.fee_payer() );
-      v.get_required_active_authorities( active ); 
-      v.get_required_owner_authorities( owner ); 
+      v.get_required_active_authorities( active );
+      v.get_required_owner_authorities( owner );
       v.get_required_authorities( other );
    }
+
+   void operator()( const custom_operation& op ) const {
+      active.insert( op.fee_payer() );
+      if( !ignore_custom_op_reqd_auths ) {
+         op.get_required_active_authorities( active );
+         op.get_required_owner_authorities( owner );
+         op.get_required_authorities( other );
+      }
+   }
 };
 
 void operation_validate( const operation& op )
@@ -79,12 +92,13 @@ void operation_validate( const operation& op )
    op.visit( operation_validator() );
 }
 
-void operation_get_required_authorities( const operation& op, 
+void operation_get_required_authorities( const operation& op,
                                          flat_set<account_id_type>& active,
                                          flat_set<account_id_type>& owner,
-                                         vector<authority>&  other )
+                                         vector<authority>& other,
+                                         bool ignore_custom_operation_required_auths )
 {
-   op.visit( operation_get_required_auth( active, owner, other ) );
+   op.visit( operation_get_required_auth( active, owner, other, ignore_custom_operation_required_auths ) );
 }
 
 } } // namespace graphene::chain
diff --git a/libraries/chain/protocol/transaction.cpp b/libraries/chain/protocol/transaction.cpp
index 62419948..98e17238 100644
--- a/libraries/chain/protocol/transaction.cpp
+++ b/libraries/chain/protocol/transaction.cpp
@@ -95,10 +95,13 @@ void transaction::set_reference_block( const block_id_type& reference_block )
    ref_block_prefix = reference_block._hash[1];
 }
 
-void transaction::get_required_authorities( flat_set<account_id_type>& active, flat_set<account_id_type>& owner, vector<authority>& other )const
+void transaction::get_required_authorities( flat_set<account_id_type>& active,
+                                            flat_set<account_id_type>& owner,
+                                            vector<authority>& other,
+                                            bool ignore_custom_operation_required_auths )const
 {
-   for( const auto& op : operations )
-      operation_get_required_authorities( op, active, owner, other );
+   for ( const auto& op : operations )
+      operation_get_required_authorities( op, active, owner, other, ignore_custom_operation_required_auths );
 }
 
 
@@ -249,8 +252,9 @@ void verify_authority( const vector<operation>& ops, const flat_set<public_key_t
                        const std::function<const authority*(account_id_type)>& get_active,
                        const std::function<const authority*(account_id_type)>& get_owner,
                        const std::function<vector<authority>(account_id_type, const operation&)>& get_custom,
+                       bool ignore_custom_operation_required_auths,
                        uint32_t max_recursion_depth,
-                       bool  allow_committe,
+                       bool  allow_committee,
                        const flat_set<account_id_type>& active_aprovals,
                        const flat_set<account_id_type>& owner_approvals )
 { try {
@@ -276,7 +280,8 @@ void verify_authority( const vector<operation>& ops, const flat_set<public_key_t
 
    for( const auto& op : ops ) {
       flat_set<account_id_type> operation_required_active;
-      operation_get_required_authorities( op, operation_required_active, required_owner, other );
+      operation_get_required_authorities( op, operation_required_active, required_owner, other,
+                                          ignore_custom_operation_required_auths );
 
       auto itr = operation_required_active.begin();
       while ( itr != operation_required_active.end() ) {
@@ -289,7 +294,7 @@ void verify_authority( const vector<operation>& ops, const flat_set<public_key_t
       required_active.insert( operation_required_active.begin(), operation_required_active.end() );
    }
 
-   if( !allow_committe )
+   if( !allow_committee )
       GRAPHENE_ASSERT( required_active.find(GRAPHENE_COMMITTEE_ACCOUNT) == required_active.end(),
                        invalid_committee_approval, "Committee account may only propose transactions" );
 
@@ -349,6 +354,7 @@ set<public_key_type> signed_transaction::get_required_signatures(
    const std::function<const authority*(account_id_type)>& get_active,
    const std::function<const authority*(account_id_type)>& get_owner,
    const std::function<vector<authority>(account_id_type, const operation&)>& get_custom,
+   bool ignore_custom_operation_required_authorities,
    uint32_t max_recursion_depth )const
 {
    flat_set<account_id_type> required_active;
@@ -370,7 +376,7 @@ set<public_key_type> signed_transaction::get_required_signatures(
 
    for( const auto& op : operations ) {
       flat_set<account_id_type> operation_required_active;
-      operation_get_required_authorities( op, operation_required_active, required_owner, other );
+      operation_get_required_authorities( op, operation_required_active, required_owner, other, ignore_custom_operation_required_authorities );
 
       auto itr = operation_required_active.begin();
       while ( itr != operation_required_active.end() ) {
@@ -383,7 +389,7 @@ set<public_key_type> signed_transaction::get_required_signatures(
       required_active.insert( operation_required_active.begin(), operation_required_active.end() );
    }
 
-   for( const auto& auth : other )
+   for (const auto& auth : other)
       s.check_authority(&auth);
    for( auto& owner : required_owner )
       s.check_authority( get_owner( owner ) );
@@ -407,10 +413,12 @@ set<public_key_type> signed_transaction::minimize_required_signatures(
    const std::function<const authority*(account_id_type)>& get_active,
    const std::function<const authority*(account_id_type)>& get_owner,
    const std::function<vector<authority>(account_id_type, const operation&)>& get_custom,
+   bool ignore_custom_operation_required_auths,
    uint32_t max_recursion
    ) const
 {
-   set< public_key_type > s = get_required_signatures( chain_id, available_keys, get_active, get_owner, get_custom, max_recursion );
+   set< public_key_type > s = get_required_signatures( chain_id, available_keys, get_active, get_owner, get_custom,
+                                                       ignore_custom_operation_required_auths, max_recursion );
    flat_set< public_key_type > result( s.begin(), s.end() );
 
    for( const public_key_type& k : s )
@@ -418,7 +426,8 @@ set<public_key_type> signed_transaction::minimize_required_signatures(
       result.erase( k );
       try
       {
-         graphene::chain::verify_authority( operations, result, get_active, get_owner, get_custom, max_recursion );
+         graphene::chain::verify_authority( operations, result, get_active, get_owner, get_custom,
+                                            ignore_custom_operation_required_auths, max_recursion );
          continue;  // element stays erased if verify_authority is ok
       }
       catch( const tx_missing_owner_auth& e ) {}
@@ -434,6 +443,7 @@ void signed_transaction::verify_authority(
    const std::function<const authority*(account_id_type)>& get_active,
    const std::function<const authority*(account_id_type)>& get_owner,
    const std::function<vector<authority>(account_id_type, const operation&)>& get_custom,
+   bool ignore_custom_operation_required_auths,
    uint32_t max_recursion )const
 { try {
    graphene::chain::verify_authority( operations, get_signature_keys( chain_id ), get_active, get_owner, get_custom, max_recursion );
diff --git a/libraries/plugins/account_history/account_history_plugin.cpp b/libraries/plugins/account_history/account_history_plugin.cpp
index 67322f80..d1aa2f71 100644
--- a/libraries/plugins/account_history/account_history_plugin.cpp
+++ b/libraries/plugins/account_history/account_history_plugin.cpp
@@ -33,6 +33,7 @@
 #include <graphene/chain/evaluator.hpp>
 #include <graphene/chain/operation_history_object.hpp>
 #include <graphene/chain/transaction_evaluation_state.hpp>
+#include <graphene/chain/hardfork.hpp>
 
 #include <fc/smart_ref_impl.hpp>
 #include <fc/thread/thread.hpp>
@@ -123,12 +124,15 @@ void account_history_plugin_impl::update_account_histories( const signed_block&
       // get the set of accounts this operation applies to
       flat_set<account_id_type> impacted;
       vector<authority> other;
-      operation_get_required_authorities( op.op, impacted, impacted, other ); // fee_payer is added here
+      // fee payer is added here
+      operation_get_required_authorities( op.op, impacted, impacted, other,
+                                          MUST_IGNORE_CUSTOM_OP_REQD_AUTHS( db.head_block_time() ) );
 
       if( op.op.which() == operation::tag< account_create_operation >::value )
          impacted.insert( op.result.get<object_id_type>() );
       else
-         graphene::chain::operation_get_impacted_accounts( op.op, impacted );
+         graphene::chain::operation_get_impacted_accounts( op.op, impacted,
+                                                           MUST_IGNORE_CUSTOM_OP_REQD_AUTHS(db.head_block_time()) );
       if( op.op.which() == operation::tag< lottery_end_operation >::value )
       {
          auto lop = op.op.get< lottery_end_operation >();
diff --git a/libraries/plugins/elasticsearch/elasticsearch_plugin.cpp b/libraries/plugins/elasticsearch/elasticsearch_plugin.cpp
index 484aef9c..dc167b05 100644
--- a/libraries/plugins/elasticsearch/elasticsearch_plugin.cpp
+++ b/libraries/plugins/elasticsearch/elasticsearch_plugin.cpp
@@ -25,7 +25,7 @@
 #include <graphene/elasticsearch/elasticsearch_plugin.hpp>
 #include <graphene/chain/impacted.hpp>
 #include <graphene/chain/account_evaluator.hpp>
-#include <fc/smart_ref_impl.hpp>
+#include <graphene/chain/hardfork.hpp>
 #include <curl/curl.h>
 
 namespace graphene { namespace elasticsearch {
@@ -157,12 +157,15 @@ bool elasticsearch_plugin_impl::update_account_histories( const signed_block& b
       // get the set of accounts this operation applies to
       flat_set<account_id_type> impacted;
       vector<authority> other;
-      operation_get_required_authorities( op.op, impacted, impacted, other ); // fee_payer is added here
+      // fee_payer is added here
+      operation_get_required_authorities( op.op, impacted, impacted, other,
+                                          MUST_IGNORE_CUSTOM_OP_REQD_AUTHS( db.head_block_time() ) );
 
       if( op.op.which() == operation::tag< account_create_operation >::value )
          impacted.insert( op.result.get<object_id_type>() );
       else
-         graphene::chain::operation_get_impacted_accounts( op.op, impacted );
+         operation_get_impacted_accounts( op.op, impacted,
+                                          MUST_IGNORE_CUSTOM_OP_REQD_AUTHS( db.head_block_time() ) );
 
       for( auto& a : other )
          for( auto& item : a.account_auths )
diff --git a/tests/tests/authority_tests.cpp b/tests/tests/authority_tests.cpp
index a6169489..387036df 100644
--- a/tests/tests/authority_tests.cpp
+++ b/tests/tests/authority_tests.cpp
@@ -320,7 +320,7 @@ BOOST_AUTO_TEST_CASE( proposed_single_account )
       {
          vector<authority> other;
          flat_set<account_id_type> active_set, owner_set;
-         operation_get_required_authorities(op,active_set,owner_set,other);
+         operation_get_required_authorities(op, active_set, owner_set, other, false);
          BOOST_CHECK_EQUAL(active_set.size(), 1lu);
          BOOST_CHECK_EQUAL(owner_set.size(), 0lu);
          BOOST_CHECK_EQUAL(other.size(), 0lu);
@@ -328,7 +328,7 @@ BOOST_AUTO_TEST_CASE( proposed_single_account )
 
          active_set.clear();
          other.clear();
-         operation_get_required_authorities(op.proposed_ops.front().op,active_set,owner_set,other);
+         operation_get_required_authorities(op.proposed_ops.front().op, active_set, owner_set, other, false);
          BOOST_CHECK_EQUAL(active_set.size(), 1lu);
          BOOST_CHECK_EQUAL(owner_set.size(), 0lu);
          BOOST_CHECK_EQUAL(other.size(), 0lu);
@@ -1055,7 +1055,7 @@ BOOST_FIXTURE_TEST_CASE( bogus_signature, database_fixture )
 
       flat_set<account_id_type> active_set, owner_set;
       vector<authority> others;
-      trx.get_required_authorities( active_set, owner_set, others );
+      trx.get_required_authorities(active_set, owner_set, others, false);
 
       PUSH_TX( db,  trx, skip  );
 
@@ -1204,9 +1204,12 @@ BOOST_FIXTURE_TEST_CASE( get_required_signatures_test, database_fixture )
          ) -> bool
       {
          //wdump( (tx)(available_keys) );
-         set<public_key_type> result_set = tx.get_required_signatures( db.get_chain_id(), available_keys, get_active, get_owner, get_custom );
-         //wdump( (result_set)(ref_set) );
-         return result_set == ref_set;
+         set<public_key_type> result_set = tx.get_required_signatures(db.get_chain_id(), available_keys,
+                                                                      get_active, get_owner, get_custom, false);
+         set<public_key_type> result_set2 = tx.get_required_signatures(db.get_chain_id(), available_keys,
+                                                                       get_active, get_owner, get_custom, true);
+         //wdump( (result_set)(result_set2)(ref_set) );
+         return result_set == ref_set && result_set2 == ref_set;
       } ;
 
       set_auth( well_id, authority( 60, alice_id, 50, bob_id, 50 ) );
@@ -1326,9 +1329,12 @@ BOOST_FIXTURE_TEST_CASE( nonminimal_sig_test, database_fixture )
          ) -> bool
       {
          //wdump( (tx)(available_keys) );
-         set<public_key_type> result_set = tx.get_required_signatures( db.get_chain_id(), available_keys, get_active, get_owner, get_custom );
-         //wdump( (result_set)(ref_set) );
-         return result_set == ref_set;
+         set<public_key_type> result_set = tx.get_required_signatures(db.get_chain_id(), available_keys,
+                                                                      get_active, get_owner, get_custom, false);
+         set<public_key_type> result_set2 = tx.get_required_signatures(db.get_chain_id(), available_keys,
+                                                                       get_active, get_owner, get_custom, true);
+         //wdump( (result_set)(result_set2)(ref_set) );
+         return result_set == ref_set && result_set2 == ref_set;
       } ;
 
       auto chk_min = [&](
@@ -1338,9 +1344,12 @@ BOOST_FIXTURE_TEST_CASE( nonminimal_sig_test, database_fixture )
          ) -> bool
       {
          //wdump( (tx)(available_keys) );
-         set<public_key_type> result_set = tx.minimize_required_signatures( db.get_chain_id(), available_keys, get_active, get_owner, get_custom );
-         //wdump( (result_set)(ref_set) );
-         return result_set == ref_set;
+         set<public_key_type> result_set = tx.minimize_required_signatures(db.get_chain_id(), available_keys,
+                                                                           get_active, get_owner, get_custom, false);
+         set<public_key_type> result_set2 = tx.minimize_required_signatures(db.get_chain_id(), available_keys,
+                                                                            get_active, get_owner, get_custom, true);
+         //wdump( (result_set)(result_set2)(ref_set) );
+         return result_set == ref_set && result_set2 == ref_set;
       } ;
 
       set_auth( roco_id, authority( 2, styx_id, 1, thud_id, 2 ) );
@@ -1357,9 +1366,13 @@ BOOST_FIXTURE_TEST_CASE( nonminimal_sig_test, database_fixture )
       BOOST_CHECK( chk( tx, { alice_public_key, bob_public_key }, { alice_public_key, bob_public_key } ) );
       BOOST_CHECK( chk_min( tx, { alice_public_key, bob_public_key }, { alice_public_key } ) );
 
-      GRAPHENE_REQUIRE_THROW( tx.verify_authority( db.get_chain_id(), get_active, get_owner, get_custom ), fc::exception );
+      GRAPHENE_REQUIRE_THROW( tx.verify_authority( db.get_chain_id(), get_active, get_owner, get_custom, false ),
+                              fc::exception );
+      GRAPHENE_REQUIRE_THROW( tx.verify_authority( db.get_chain_id(), get_active, get_owner, get_custom, true ),
+                              fc::exception );
       sign( tx, alice_private_key );
-      tx.verify_authority( db.get_chain_id(), get_active, get_owner, get_custom );
+      tx.verify_authority( db.get_chain_id(), get_active, get_owner, get_custom, false );
+      tx.verify_authority( db.get_chain_id(), get_active, get_owner, get_custom, true );
    }
    catch(fc::exception& e)
    {