diff --git a/src/komodo_defs.h b/src/komodo_defs.h
index 6ac777898..06ed750a5 100644
--- a/src/komodo_defs.h
+++ b/src/komodo_defs.h
@@ -18,7 +18,7 @@
 #include "komodo_nk.h"
 
 #define ASSETCHAINS_MINHEIGHT 128
-#define ASSETCHAINS_MAX_ERAS 3
+#define ASSETCHAINS_MAX_ERAS 7
 #define KOMODO_ELECTION_GAP 2000
 #define ROUNDROBIN_DELAY 61
 #define KOMODO_ASSETCHAIN_MAXLEN 65
diff --git a/src/komodo_globals.h b/src/komodo_globals.h
index c88b675a2..85fcfcccf 100644
--- a/src/komodo_globals.h
+++ b/src/komodo_globals.h
@@ -46,7 +46,7 @@ struct komodo_state KOMODO_STATES[34];
 int COINBASE_MATURITY = _COINBASE_MATURITY;//100;
 unsigned int WITNESS_CACHE_SIZE = _COINBASE_MATURITY+10;
 uint256 KOMODO_EARLYTXID;
-int32_t KOMODO_MININGTHREADS = -1,IS_KOMODO_NOTARY,IS_STAKED_NOTARY,USE_EXTERNAL_PUBKEY,KOMODO_CHOSEN_ONE,ASSETCHAINS_SEED,KOMODO_ON_DEMAND,KOMODO_EXTERNAL_NOTARIES,KOMODO_PASSPORT_INITDONE,KOMODO_PAX,KOMODO_EXCHANGEWALLET,KOMODO_REWIND,STAKED_ERA,KOMODO_CONNECTING = -1,KOMODO_DEALERNODE,KOMODO_EXTRASATOSHI,ASSETCHAINS_FOUNDERS,KOMODO_NSPV;
+int32_t KOMODO_MININGTHREADS = -1,IS_KOMODO_NOTARY,IS_STAKED_NOTARY,USE_EXTERNAL_PUBKEY,KOMODO_CHOSEN_ONE,ASSETCHAINS_SEED,KOMODO_ON_DEMAND,KOMODO_EXTERNAL_NOTARIES,KOMODO_PASSPORT_INITDONE,KOMODO_PAX,KOMODO_EXCHANGEWALLET,KOMODO_REWIND,STAKED_ERA,KOMODO_CONNECTING = -1,KOMODO_DEALERNODE,KOMODO_EXTRASATOSHI,ASSETCHAINS_FOUNDERS,ASSETCHAINS_CBMATURITY,KOMODO_NSPV;
 int32_t KOMODO_INSYNC,KOMODO_LASTMINED,prevKOMODO_LASTMINED,KOMODO_CCACTIVATE,JUMBLR_PAUSE = 1;
 std::string NOTARY_PUBKEY,ASSETCHAINS_NOTARIES,ASSETCHAINS_OVERRIDE_PUBKEY,DONATION_PUBKEY,ASSETCHAINS_SCRIPTPUB,NOTARY_ADDRESS,ASSETCHAINS_SELFIMPORT,ASSETCHAINS_CCLIB;
 uint8_t NOTARY_PUBKEY33[33],ASSETCHAINS_OVERRIDE_PUBKEY33[33],ASSETCHAINS_OVERRIDE_PUBKEYHASH[20],ASSETCHAINS_PUBLIC,ASSETCHAINS_PRIVATE,ASSETCHAINS_TXPOW,ASSETCHAINS_MARMARA;
diff --git a/src/komodo_utils.h b/src/komodo_utils.h
index 134551b0d..8217f0e03 100644
--- a/src/komodo_utils.h
+++ b/src/komodo_utils.h
@@ -1873,6 +1873,7 @@ void komodo_args(char *argv0)
         ASSETCHAINS_CODAPORT = GetArg("-ac_coda",0);
         ASSETCHAINS_MARMARA = GetArg("-ac_marmara",0);
         ASSETCHAINS_CBOPRET = GetArg("-ac_cbopret",0);
+        ASSETCHAINS_CBMATURITY = GetArg("-ac_cbmaturity",0);
         //fprintf(stderr,"ASSETCHAINS_CBOPRET.%llx\n",(long long)ASSETCHAINS_CBOPRET);
         if ( ASSETCHAINS_CBOPRET != 0 )
         {
@@ -2185,6 +2186,10 @@ void komodo_args(char *argv0)
             {
                 extralen += iguana_rwnum(1,&extraptr[extralen],sizeof(ASSETCHAINS_EARLYTXIDCONTRACT),(void *)&ASSETCHAINS_EARLYTXIDCONTRACT);
             }
+            if ( ASSETCHAINS_CBMATURITY != 0 )
+            {
+                extralen += iguana_rwnum(1,&extraptr[extralen],sizeof(ASSETCHAINS_CBMATURITY),(void *)&ASSETCHAINS_CBMATURITY);
+            }
         }
         
         addn = GetArg("-seednode","");
@@ -2236,8 +2241,16 @@ void komodo_args(char *argv0)
             if ( (port= komodo_userpass(ASSETCHAINS_USERPASS,ASSETCHAINS_SYMBOL)) != 0 )
                 ASSETCHAINS_RPCPORT = port;
             else komodo_configfile(ASSETCHAINS_SYMBOL,ASSETCHAINS_P2PPORT + 1);
-            if (ASSETCHAINS_LASTERA == 0 || is_STAKED(ASSETCHAINS_SYMBOL) != 0)
+
+            if (ASSETCHAINS_CBMATURITY != 0)
+                COINBASE_MATURITY = ASSETCHAINS_CBMATURITY;
+            else if (ASSETCHAINS_LASTERA == 0 || is_STAKED(ASSETCHAINS_SYMBOL) != 0)
                 COINBASE_MATURITY = 1;
+            if (COINBASE_MATURITY < 1)
+            {
+                fprintf(stderr,"ac_cbmaturity must be >0, shutting down\n");
+                StartShutdown();
+            }
             //fprintf(stderr,"ASSETCHAINS_RPCPORT (%s) %u\n",ASSETCHAINS_SYMBOL,ASSETCHAINS_RPCPORT);
         }
         if ( ASSETCHAINS_RPCPORT == 0 )