diff --git a/src/chainparams.cpp b/src/chainparams.cpp
index d00a9dd82..9206635cb 100644
--- a/src/chainparams.cpp
+++ b/src/chainparams.cpp
@@ -68,8 +68,7 @@ public:
         strNetworkID = "main";
         consensus.nSubsidyHalvingInterval = 1050000; // 210000 * 5
         consensus.BIP16Height = 1;
-        consensus.BIP34Height = 10;
-        //consensus.BIP34Hash = uint256S("0x581cc1e4153a2a367012d3678f0f83f7d62286d84e69ab860804acf3ff2f572b");
+        consensus.BIP34Height = 1;
         consensus.BIP65Height = 1;
         consensus.BIP66Height = 1;
         consensus.powLimit = uint256S("000fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff");
@@ -183,11 +182,11 @@ public:
         strNetworkID = "test";
         consensus.nSubsidyHalvingInterval = 840000;
         consensus.BIP16Height = 0; // always enforce P2SH BIP16 on regtest
-        consensus.BIP34Height = 76;
+        consensus.BIP34Height = 1;
         consensus.BIP34Hash = uint256S("0x581cc1e4153a2a367012d3678f0f83f7d62286d84e69ab860804acf3ff2f572b"); // Genesis
-        consensus.BIP65Height = 76; // 8075c771ed8b495ffd943980a95f702ab34fce3c8c54e379548bda33cc8c0573
-        consensus.BIP66Height = 76; // 8075c771ed8b495ffd943980a95f702ab34fce3c8c54e379548bda33cc8c0573
-        consensus.powLimit = uint256S("0007ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff");
+        consensus.BIP65Height = 1;
+        consensus.BIP66Height = 1;
+        consensus.powLimit = uint256S("000fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff");
         consensus.nPowTargetTimespan = 2.0 * 60; // Two minutes
         consensus.nPowTargetSpacing = 2.0 * 60; // Two minutes
         consensus.fPowAllowMinDifficultyBlocks = true;
@@ -200,16 +199,18 @@ public:
 
         // Deployment of BIP68, BIP112, and BIP113.
         consensus.vDeployments[Consensus::DEPLOYMENT_CSV].bit = 0;
-        consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nStartTime = 1483228800; // January 1, 2017
+        //consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nStartTime = 1483228800; // January 1, 2017
+        consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nStartTime = -1; // Consensus::BIP9Deployment::ALWAYS_ACTIVE
         consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nTimeout = 1517356801; // January 31st, 2018
 
         // Deployment of SegWit (BIP141, BIP143, and BIP147)
         consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].bit = 1;
-        consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].nStartTime = 1483228800; // January 1, 2017
+        //consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].nStartTime = 1483228800; // January 1, 2017
+        consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].nStartTime = -1; // Consensus::BIP9Deployment::ALWAYS_ACTIVE
         consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].nTimeout = 1517356801; // January 31st, 2018
 
         // The best chain should have at least this much work.
-        consensus.nMinimumChainWork = uint256S("0x000000000000000000000000000000000000000000000000001df7b5aa1700ce");
+        consensus.nMinimumChainWork = uint256S("0x000000000000000000000000000000000000000000000000000000000000ffff");
 
         // By default assume that the signatures in ancestors of this block are valid.
         consensus.defaultAssumeValid = uint256S("0x1efb29c8187d5a496a33377941d1df415169c3ce5d8c05d055f25b683ec3f9a3"); //612653
@@ -250,12 +251,12 @@ public:
         // nodes with support for servicebits filtering should be at the top
         vSeeds.emplace_back("testnet-seed.kevacoin.org");
 
-        base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,111);
-        base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,196);
-        base58Prefixes[SCRIPT_ADDRESS2] = std::vector<unsigned char>(1,58);
-        base58Prefixes[SECRET_KEY] =     std::vector<unsigned char>(1,239);
-        base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x35, 0x87, 0xCF};
-        base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x35, 0x83, 0x94};
+        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>(1,70); // 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};
         base58Prefixes[KEVA_NAMESPACE] = std::vector<unsigned char>(1,53); // N
 
         bech32_hrp = "tkva";