diff --git a/libraries/chain/block_header_state.cpp b/libraries/chain/block_header_state.cpp
index c6f3e552f937f0fa4f4f83d8bdbc6590089746ff..d6fe99333b390bad00299af5ea91b08d813998b7 100644
--- a/libraries/chain/block_header_state.cpp
+++ b/libraries/chain/block_header_state.cpp
@@ -85,7 +85,6 @@ namespace eosio { namespace chain {
     result.block_num                             = block_num + 1;
     result.producer_to_last_produced             = producer_to_last_produced;
     result.producer_to_last_produced[prokey.producer_name] = result.block_num;
-//    result.dpos_irreversible_blocknum       = result.calc_dpos_last_irreversible();
     result.blockroot_merkle = blockroot_merkle;
     result.blockroot_merkle.append( id );
 
@@ -114,20 +113,21 @@ namespace eosio { namespace chain {
     }
 
     /// grow the confirmed count
-    uint8_t required_confs = (result.active_schedule.producers.size() * 2 / 3) + 1;
-    if( confirm_count.size() < 1024 ) {
+    static_assert(std::numeric_limits<uint8_t>::max() >= (config::max_producers * 2 / 3) + 1, "8bit confirmations may not be able to hold all of the needed confirmations");
+    auto num_active_producers = result.active_schedule.producers.size();
+    uint32_t required_confs = (uint32_t)(num_active_producers * 2 / 3) + 1;
+
+    if( confirm_count.size() < config::maximum_tracked_dpos_confirmations ) {
        result.confirm_count.reserve( confirm_count.size() + 1 );
        result.confirm_count  = confirm_count;
        result.confirm_count.resize( confirm_count.size() + 1 );
-       result.confirm_count.back() = required_confs;
+       result.confirm_count.back() = (uint8_t)required_confs;
     } else {
        result.confirm_count.resize( confirm_count.size() );
        memcpy( &result.confirm_count[0], &confirm_count[1], confirm_count.size() - 1 );
-       result.confirm_count.back() = required_confs;
+       result.confirm_count.back() = (uint8_t)required_confs;
     }
 
-
-
     return result;
   } /// generate_next
 
diff --git a/libraries/chain/include/eosio/chain/block_header_state.hpp b/libraries/chain/include/eosio/chain/block_header_state.hpp
index 665cf6c9fe9bd41dedb4cd735fe83cc5b3a8e33a..1b6cf8243300ef03041368a0d9ba8d74922661e6 100644
--- a/libraries/chain/include/eosio/chain/block_header_state.hpp
+++ b/libraries/chain/include/eosio/chain/block_header_state.hpp
@@ -22,16 +22,14 @@ struct block_header_state {
     flat_map<account_name,uint32_t>   producer_to_last_produced;
     public_key_type                   block_signing_key;
     vector<uint8_t>                   confirm_count;
+    vector<header_confirmation>       confirmations;
 
     block_header_state   next( const signed_block_header& h )const;
     block_header_state   generate_next( block_timestamp_type when )const;
 
     void set_new_producers( producer_schedule_type next_pending );
     void set_confirmed( uint16_t num_prev_blocks );
-
-
     void add_confirmation( const header_confirmation& c );
-    vector<header_confirmation>  confirmations;
 
 
     bool                 has_pending_producers()const { return pending_schedule.producers.size(); }
@@ -57,8 +55,8 @@ struct block_header_state {
 } } /// namespace eosio::chain
 
 FC_REFLECT( eosio::chain::block_header_state,
-            (id)(block_num)(header)(dpos_irreversible_blocknum)
+            (id)(block_num)(header)(dpos_irreversible_blocknum)(bft_irreversible_blocknum)
             (pending_schedule_lib_num)(pending_schedule_hash)
             (pending_schedule)(active_schedule)(blockroot_merkle)
             (producer_to_last_produced)(block_signing_key)
-            (bft_irreversible_blocknum)(confirmations) )
+            (confirm_count)(confirmations) )
diff --git a/libraries/chain/include/eosio/chain/config.hpp b/libraries/chain/include/eosio/chain/config.hpp
index 05f72be9744505dd491e96df4216d7c8486f1165..198b152b2ebc8142a466c5671aadb6d2b24050e8 100644
--- a/libraries/chain/include/eosio/chain/config.hpp
+++ b/libraries/chain/include/eosio/chain/config.hpp
@@ -98,6 +98,11 @@ const static eosio::chain::wasm_interface::vm_type default_wasm_runtime = eosio:
  *  The number of sequential blocks produced by a single producer
  */
 const static int producer_repetitions = 12;
+const static int max_producers = 125;
+
+const static size_t maximum_tracked_dpos_confirmations = 1024;     ///<
+static_assert(maximum_tracked_dpos_confirmations >= ((max_producers * 2 / 3) + 1) * producer_repetitions, "Settings never allow for DPOS irreversibility" );
+
 
 /**
  * The number of blocks produced per round is based upon all producers having a chance
diff --git a/libraries/chain/wasm_interface.cpp b/libraries/chain/wasm_interface.cpp
index 77aefc29864ce19e2a508c1fcdf5765edf2c1177..866c6e33e9b77e65f8bb7a970e6b060e251f8eed 100644
--- a/libraries/chain/wasm_interface.cpp
+++ b/libraries/chain/wasm_interface.cpp
@@ -145,6 +145,7 @@ class privileged_api : public context_aware_api {
          datastream<const char*> ds( packed_producer_schedule, datalen );
          vector<producer_key> producers;
          fc::raw::unpack(ds, producers);
+         EOS_ASSERT(producers.size() <= config::max_producers, wasm_execution_error, "Producer schedule exceeds the maximum producer count for this chain");
          // check that producers are unique
          std::set<account_name> unique_producers;
          for (const auto& p: producers) {