diff --git a/src/chainparams.cpp b/src/chainparams.cpp
index eccaac16a..84e471962 100644
--- a/src/chainparams.cpp
+++ b/src/chainparams.cpp
@@ -154,14 +154,14 @@ public:
         vSeeds.emplace_back("dnsseed.koin-project.com");
         vSeeds.clear(); //JW remove this!
 
-        base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,48);
+        base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,45); // K
         base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,5);
-        base58Prefixes[SCRIPT_ADDRESS2] = std::vector<unsigned char>(1,50);
-        base58Prefixes[SECRET_KEY] =     std::vector<unsigned char>(1,176);
+        base58Prefixes[SCRIPT_ADDRESS2] = std::vector<unsigned char>(1,70); // V
+        base58Prefixes[SECRET_KEY] =     std::vector<unsigned char>(1,139); // M
         base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x88, 0xB2, 0x1E};
         base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x88, 0xAD, 0xE4};
 
-        bech32_hrp = "ltc";
+        bech32_hrp = "kva";
 
         vFixedSeeds = std::vector<SeedSpec6>(pnSeed6_main, pnSeed6_main + ARRAYLEN(pnSeed6_main));
         vFixedSeeds.clear(); //JW remove this!
@@ -287,7 +287,7 @@ public:
         base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x35, 0x87, 0xCF};
         base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x35, 0x83, 0x94};
 
-        bech32_hrp = "tltc";
+        bech32_hrp = "tkva";
 
         vFixedSeeds = std::vector<SeedSpec6>(pnSeed6_test, pnSeed6_test + ARRAYLEN(pnSeed6_test));
 
@@ -404,7 +404,7 @@ public:
         base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x35, 0x87, 0xCF};
         base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x35, 0x83, 0x94};
 
-        bech32_hrp = "rltc";
+        bech32_hrp = "rkva";
     }
 
     int DefaultCheckNameDB() const