diff --git a/Gopkg.lock b/Gopkg.lock
index 6145e706..cf32c2f0 100644
--- a/Gopkg.lock
+++ b/Gopkg.lock
@@ -1,6 +1,12 @@
 # This file is autogenerated, do not edit; changes may be undone by the next 'dep ensure'.
 
 
+[[projects]]
+  branch = "master"
+  name = "github.com/Groestlcoin/go-groestl-hash"
+  packages = ["groestl","hash"]
+  revision = "790653ac190c4029ee200e82a8f21b5d1afaf7d6"
+
 [[projects]]
   branch = "master"
   name = "github.com/beorn7/perks"
@@ -89,13 +95,13 @@
   branch = "master"
   name = "github.com/jakm/bchutil"
   packages = ["."]
-  revision = "9e4fc13b082c87967b0befbcbad6fe5a5aa5ac1a"
+  revision = "5a273ca8a96628732c07ff5cfb9f3e7d965241e8"
 
 [[projects]]
   branch = "master"
   name = "github.com/jakm/btcutil"
   packages = [".","base58","bech32","chaincfg","txscript"]
-  revision = "83dfbb3d0b20916f89b36b95c6ca580e3a785856"
+  revision = "224b76333062172edefdeb502123fdda12205f76"
 
 [[projects]]
   branch = "master"
diff --git a/bchain/coins/blockchain.go b/bchain/coins/blockchain.go
index 90e011ff..da2df8b8 100644
--- a/bchain/coins/blockchain.go
+++ b/bchain/coins/blockchain.go
@@ -8,6 +8,7 @@ import (
 	"blockbook/bchain/coins/dash"
 	"blockbook/bchain/coins/dogecoin"
 	"blockbook/bchain/coins/eth"
+	"blockbook/bchain/coins/grs"
 	"blockbook/bchain/coins/litecoin"
 	"blockbook/bchain/coins/monacoin"
 	"blockbook/bchain/coins/myriad"
@@ -52,6 +53,8 @@ func init() {
 	BlockChainFactories["Monacoin"] = monacoin.NewMonacoinRPC
 	BlockChainFactories["Monacoin Testnet"] = monacoin.NewMonacoinRPC
 	BlockChainFactories["Myriad"] = myriad.NewMyriadRPC
+	BlockChainFactories["Groestlcoin"] = grs.NewGroestlcoinRPC
+	BlockChainFactories["Groestlcoin Testnet"] = grs.NewGroestlcoinRPC
 }
 
 // GetCoinNameFromConfig gets coin name and coin shortcut from config file
diff --git a/bchain/coins/grs/grsparser.go b/bchain/coins/grs/grsparser.go
new file mode 100644
index 00000000..460eadc9
--- /dev/null
+++ b/bchain/coins/grs/grsparser.go
@@ -0,0 +1,88 @@
+package grs
+
+import (
+	"blockbook/bchain"
+	"blockbook/bchain/coins/btc"
+
+	"github.com/btcsuite/btcd/wire"
+	"github.com/jakm/btcutil/base58"
+	"github.com/jakm/btcutil/chaincfg"
+)
+
+const (
+	MainnetMagic wire.BitcoinNet = 0xd4b4bef9
+	TestnetMagic wire.BitcoinNet = 0x0709110b
+)
+
+var (
+	MainNetParams chaincfg.Params
+	TestNetParams chaincfg.Params
+)
+
+func init() {
+	MainNetParams = chaincfg.MainNetParams
+	MainNetParams.Net = MainnetMagic
+
+	// Address encoding magics
+	MainNetParams.PubKeyHashAddrID = []byte{36}
+	MainNetParams.ScriptHashAddrID = []byte{5}
+	MainNetParams.Bech32HRPSegwit = "grs"
+	MainNetParams.Base58CksumHasher = base58.Groestl512D
+
+	TestNetParams = chaincfg.TestNet3Params
+	TestNetParams.Net = TestnetMagic
+
+	// Address encoding magics
+	TestNetParams.PubKeyHashAddrID = []byte{111}
+	TestNetParams.ScriptHashAddrID = []byte{196}
+	TestNetParams.Bech32HRPSegwit = "tgrs"
+	TestNetParams.Base58CksumHasher = base58.Groestl512D
+}
+
+// GroestlcoinParser handle
+type GroestlcoinParser struct {
+	*btc.BitcoinParser
+	baseparser *bchain.BaseParser
+}
+
+// NewGroestlcoinParser returns new GroestlcoinParser instance
+func NewGroestlcoinParser(params *chaincfg.Params, c *btc.Configuration) *GroestlcoinParser {
+	return &GroestlcoinParser{
+		BitcoinParser: btc.NewBitcoinParser(params, c),
+		baseparser:    &bchain.BaseParser{},
+	}
+}
+
+// GetChainParams contains network parameters for the main Groestlcoin network,
+// the regression test Groestlcoin network, the test Groestlcoin network and
+// the simulation test Groestlcoin network, in this order
+func GetChainParams(chain string) *chaincfg.Params {
+	if !chaincfg.IsRegistered(&MainNetParams) {
+		err := chaincfg.Register(&MainNetParams)
+		if err == nil {
+			err = chaincfg.Register(&TestNetParams)
+		}
+		if err != nil {
+			panic(err)
+		}
+	}
+	var params *chaincfg.Params
+	switch chain {
+	case "test":
+		return &TestNetParams
+	default:
+		return &MainNetParams
+	}
+
+	return params
+}
+
+// PackTx packs transaction to byte array using protobuf
+func (p *GroestlcoinParser) PackTx(tx *bchain.Tx, height uint32, blockTime int64) ([]byte, error) {
+	return p.baseparser.PackTx(tx, height, blockTime)
+}
+
+// UnpackTx unpacks transaction from protobuf byte array
+func (p *GroestlcoinParser) UnpackTx(buf []byte) (*bchain.Tx, uint32, error) {
+	return p.baseparser.UnpackTx(buf)
+}
diff --git a/bchain/coins/grs/grsparser_test.go b/bchain/coins/grs/grsparser_test.go
new file mode 100644
index 00000000..5b40ec38
--- /dev/null
+++ b/bchain/coins/grs/grsparser_test.go
@@ -0,0 +1,248 @@
+// +build unittest
+
+package grs
+
+import (
+	"blockbook/bchain"
+	"blockbook/bchain/coins/btc"
+	"bytes"
+	"encoding/hex"
+	"math/big"
+	"os"
+	"reflect"
+	"testing"
+
+	"github.com/jakm/btcutil/chaincfg"
+)
+
+var (
+	testTx1, testTx2 bchain.Tx
+
+	testTxPacked1 = "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"
+	testTxPacked2 = "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"
+)
+
+func init() {
+	testTx1 = bchain.Tx{
+		Hex:       "01000000014a9d1fdba915e0907ab02f04f88898863112a2b4fdcf872c7414588c47c874cb000000006a47304402201fb96d20d0778f54520ab59afe70d5fb20e500ecc9f02281cf57934e8029e8e10220383d5a3e80f2e1eb92765b6da0f23d454aecbd8236f083d483e9a7430236876101210331693756f749180aeed0a65a0fab0625a2250bd9abca502282a4cf0723152e67ffffffff01a0330300000000001976a914fe40329c95c5598ac60752a5310b320cb52d18e688ac00000000",
+		Blocktime: 1531052031,
+		Time:      1531052031,
+		Txid:      "f56521b17b828897f72b30dd21b0192fd942342e89acbb06abf1d446282c30f5",
+		LockTime:  0,
+		Vin: []bchain.Vin{
+			{
+				ScriptSig: bchain.ScriptSig{
+					Hex: "47304402201fb96d20d0778f54520ab59afe70d5fb20e500ecc9f02281cf57934e8029e8e10220383d5a3e80f2e1eb92765b6da0f23d454aecbd8236f083d483e9a7430236876101210331693756f749180aeed0a65a0fab0625a2250bd9abca502282a4cf0723152e67",
+				},
+				Txid:     "cb74c8478c5814742c87cffdb4a21231869888f8042fb07a90e015a9db1f9d4a",
+				Vout:     0,
+				Sequence: 4294967295,
+			},
+		},
+		Vout: []bchain.Vout{
+			{
+				ValueSat: *big.NewInt(209824),
+				N:        0,
+				ScriptPubKey: bchain.ScriptPubKey{
+					Hex: "76a914fe40329c95c5598ac60752a5310b320cb52d18e688ac",
+					Addresses: []string{
+						"FtM4zAn9aVYgHgxmamWBgWPyZsb6RhvkA9",
+					},
+				},
+			},
+		},
+	}
+
+	testTx2 = bchain.Tx{
+		Hex:       "01000000000101d1613f483f2086d076c82fe34674385a86beb08f052d5405fe1aed397f852f4f0000000000feffffff02404b4c000000000017a9147a55d61848e77ca266e79a39bfc85c580a6426c987a8386f0000000000160014cc8067093f6f843d6d3e22004a4290cd0c0f336b02483045022100ea8780bc1e60e14e945a80654a41748bbf1aa7d6f2e40a88d91dfc2de1f34bd10220181a474a3420444bd188501d8d270736e1e9fe379da9970de992ff445b0972e3012103adc58245cf28406af0ef5cc24b8afba7f1be6c72f279b642d85c48798685f862d9ed0900",
+		Blocktime: 1530991050,
+		Time:      1530991050,
+		Txid:      "9b5c4859a8a31e69788cb4402812bb28f14ad71cbd8c60b09903478bc56f79a3",
+		LockTime:  650713,
+		Vin: []bchain.Vin{
+			{
+				ScriptSig: bchain.ScriptSig{
+					Hex: "",
+				},
+				Txid:     "4f2f857f39ed1afe05542d058fb0be865a387446e32fc876d086203f483f61d1",
+				Vout:     0,
+				Sequence: 4294967294,
+			},
+		},
+		Vout: []bchain.Vout{
+			{
+				ValueSat: *big.NewInt(5000000),
+				N:        0,
+				ScriptPubKey: bchain.ScriptPubKey{
+					Hex: "a9147a55d61848e77ca266e79a39bfc85c580a6426c987",
+					Addresses: []string{
+						"2N4Q5FhU2497BryFfUgbqkAJE87aKDv3V3e",
+					},
+				},
+			},
+			{
+				ValueSat: *big.NewInt(7289000),
+				N:        1,
+				ScriptPubKey: bchain.ScriptPubKey{
+					Hex: "0014cc8067093f6f843d6d3e22004a4290cd0c0f336b",
+					Addresses: []string{
+						"tgrs1qejqxwzfld7zr6mf7ygqy5s5se5xq7vmt9lkd57",
+					},
+				},
+			},
+		},
+	}
+}
+
+func TestMain(m *testing.M) {
+	c := m.Run()
+	chaincfg.ResetParams()
+	os.Exit(c)
+}
+
+func TestGetAddrDesc(t *testing.T) {
+	type args struct {
+		tx     bchain.Tx
+		parser *GroestlcoinParser
+	}
+	tests := []struct {
+		name string
+		args args
+	}{
+		{
+			name: "grs-1",
+			args: args{
+				tx:     testTx1,
+				parser: NewGroestlcoinParser(GetChainParams("main"), &btc.Configuration{}),
+			},
+		},
+		{
+			name: "grs-2",
+			args: args{
+				tx:     testTx2,
+				parser: NewGroestlcoinParser(GetChainParams("test"), &btc.Configuration{}),
+			},
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			for n, vout := range tt.args.tx.Vout {
+				got1, err := tt.args.parser.GetAddrDescFromVout(&vout)
+				if err != nil {
+					t.Errorf("getAddrDescFromVout() error = %v, vout = %d", err, n)
+					return
+				}
+				got2, err := tt.args.parser.GetAddrDescFromAddress(vout.ScriptPubKey.Addresses[0])
+				if err != nil {
+					t.Errorf("getAddrDescFromAddress() error = %v, vout = %d", err, n)
+					return
+				}
+				if !bytes.Equal(got1, got2) {
+					t.Errorf("Address descriptors mismatch: got1 = %v, got2 = %v", got1, got2)
+				}
+			}
+		})
+	}
+}
+
+func TestPackTx(t *testing.T) {
+	type args struct {
+		tx        bchain.Tx
+		height    uint32
+		blockTime int64
+		parser    *GroestlcoinParser
+	}
+	tests := []struct {
+		name    string
+		args    args
+		want    string
+		wantErr bool
+	}{
+		{
+			name: "grs-1",
+			args: args{
+				tx:        testTx1,
+				height:    2161062,
+				blockTime: 1531052031,
+				parser:    NewGroestlcoinParser(GetChainParams("main"), &btc.Configuration{}),
+			},
+			want:    testTxPacked1,
+			wantErr: false,
+		},
+		{
+			name: "grs-2",
+			args: args{
+				tx:        testTx2,
+				height:    650714,
+				blockTime: 1530991050,
+				parser:    NewGroestlcoinParser(GetChainParams("test"), &btc.Configuration{}),
+			},
+			want:    testTxPacked2,
+			wantErr: false,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			got, err := tt.args.parser.PackTx(&tt.args.tx, tt.args.height, tt.args.blockTime)
+			if (err != nil) != tt.wantErr {
+				t.Errorf("packTx() error = %v, wantErr %v", err, tt.wantErr)
+				return
+			}
+			h := hex.EncodeToString(got)
+			if !reflect.DeepEqual(h, tt.want) {
+				t.Errorf("packTx() = %v, want %v", h, tt.want)
+			}
+		})
+	}
+}
+
+func TestUnpackTx(t *testing.T) {
+	type args struct {
+		packedTx string
+		parser   *GroestlcoinParser
+	}
+	tests := []struct {
+		name    string
+		args    args
+		want    *bchain.Tx
+		want1   uint32
+		wantErr bool
+	}{
+		{
+			name: "grs-1",
+			args: args{
+				packedTx: testTxPacked1,
+				parser:   NewGroestlcoinParser(GetChainParams("main"), &btc.Configuration{}),
+			},
+			want:    &testTx1,
+			want1:   2161062,
+			wantErr: false,
+		},
+		{
+			name: "grs-2",
+			args: args{
+				packedTx: testTxPacked2,
+				parser:   NewGroestlcoinParser(GetChainParams("test"), &btc.Configuration{}),
+			},
+			want:    &testTx2,
+			want1:   650714,
+			wantErr: false,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			b, _ := hex.DecodeString(tt.args.packedTx)
+			got, got1, err := tt.args.parser.UnpackTx(b)
+			if (err != nil) != tt.wantErr {
+				t.Errorf("unpackTx() error = %v, wantErr %v", err, tt.wantErr)
+				return
+			}
+			if !reflect.DeepEqual(got, tt.want) {
+				t.Errorf("unpackTx() got = %v, want %v", got, tt.want)
+			}
+			if got1 != tt.want1 {
+				t.Errorf("unpackTx() got1 = %v, want %v", got1, tt.want1)
+			}
+		})
+	}
+}
diff --git a/bchain/coins/grs/grsrpc.go b/bchain/coins/grs/grsrpc.go
new file mode 100644
index 00000000..f7adebd0
--- /dev/null
+++ b/bchain/coins/grs/grsrpc.go
@@ -0,0 +1,115 @@
+package grs
+
+import (
+	"blockbook/bchain"
+	"blockbook/bchain/coins/btc"
+	"encoding/json"
+
+	"github.com/golang/glog"
+	"github.com/juju/errors"
+)
+
+type GroestlcoinRPC struct {
+	*btc.BitcoinRPC
+}
+
+func NewGroestlcoinRPC(config json.RawMessage, pushHandler func(bchain.NotificationType)) (bchain.BlockChain, error) {
+	b, err := btc.NewBitcoinRPC(config, pushHandler)
+	if err != nil {
+		return nil, err
+	}
+	g := &GroestlcoinRPC{
+		BitcoinRPC: b.(*btc.BitcoinRPC),
+	}
+	g.RPCMarshaler = btc.JSONMarshalerV1{}
+	return g, nil
+}
+
+// Initialize initializes GroestlcoinRPC instance.
+func (g *GroestlcoinRPC) Initialize() error {
+	chainName, err := g.GetChainInfoAndInitializeMempool(g)
+	if err != nil {
+		return err
+	}
+
+	params := GetChainParams(chainName)
+
+	g.Parser = NewGroestlcoinParser(params, g.ChainConfig)
+
+	// parameters for getInfo request
+	if params.Net == MainnetMagic {
+		g.Testnet = false
+		g.Network = "livenet"
+	} else {
+		g.Testnet = true
+		g.Network = "testnet"
+	}
+
+	glog.Info("rpc: block chain ", params.Name)
+
+	return nil
+}
+
+// GetBlock returns block with given hash.
+func (g *GroestlcoinRPC) GetBlock(hash string, height uint32) (*bchain.Block, error) {
+	var err error
+	if hash == "" && height > 0 {
+		hash, err = g.GetBlockHash(height)
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	glog.V(1).Info("rpc: getblock (verbosity=1) ", hash)
+
+	res := btc.ResGetBlockThin{}
+	req := btc.CmdGetBlock{Method: "getblock"}
+	req.Params.BlockHash = hash
+	req.Params.Verbosity = 1
+	err = g.Call(&req, &res)
+
+	if err != nil {
+		return nil, errors.Annotatef(err, "hash %v", hash)
+	}
+	if res.Error != nil {
+		return nil, errors.Annotatef(res.Error, "hash %v", hash)
+	}
+
+	txs := make([]bchain.Tx, 0, len(res.Result.Txids))
+	for _, txid := range res.Result.Txids {
+		tx, err := g.GetTransaction(txid)
+		if err != nil {
+			if isInvalidTx(err) {
+				glog.Errorf("rpc: getblock: skipping transanction in block %s due error: %s", hash, err)
+				continue
+			}
+			return nil, err
+		}
+		txs = append(txs, *tx)
+	}
+	block := &bchain.Block{
+		BlockHeader: res.Result.BlockHeader,
+		Txs:         txs,
+	}
+	return block, nil
+}
+
+func isInvalidTx(err error) bool {
+	switch e1 := err.(type) {
+	case *errors.Err:
+		switch e2 := e1.Cause().(type) {
+		case *bchain.RPCError:
+			if e2.Code == -5 { // "No information available about transaction"
+				return true
+			}
+		}
+	}
+
+	return false
+}
+
+// GetTransactionForMempool returns a transaction by the transaction ID.
+// It could be optimized for mempool, i.e. without block time and confirmations
+func (g *GroestlcoinRPC) GetTransactionForMempool(txid string) (*bchain.Tx, error) {
+	return g.GetTransaction(txid)
+}
diff --git a/configs/coins/groestlcoin.json b/configs/coins/groestlcoin.json
new file mode 100644
index 00000000..760799da
--- /dev/null
+++ b/configs/coins/groestlcoin.json
@@ -0,0 +1,66 @@
+{
+  "coin": {
+      "name": "Groestlcoin",
+      "shortcut": "GRS",
+      "label": "Groestlcoin",
+      "alias": "groestlcoin"
+  },
+  "ports": {
+    "backend_rpc": 8045,
+    "backend_message_queue": 38345,
+    "blockbook_internal": 9045,
+    "blockbook_public": 9145
+  },
+  "ipc": {
+    "rpc_url_template": "http://127.0.0.1:{{.Ports.BackendRPC}}",
+    "rpc_user": "rpc",
+    "rpc_pass": "rpc",
+    "rpc_timeout": 25,
+    "message_queue_binding_template": "tcp://127.0.0.1:{{.Ports.BackendMessageQueue}}"
+  },
+  "backend": {
+    "package_name": "backend-groestlcoin",
+    "package_revision": "satoshilabs-1",
+    "system_user": "groestlcoin",
+    "version": "2.16.3",
+    "binary_url": "https://github.com/Groestlcoin/groestlcoin/releases/download/v2.16.3/groestlcoin-2.16.3-x86_64-linux-gnu.tar.gz",
+    "verification_type": "sha256",
+    "verification_source": "f15bd5e38b25a103821f1563cd0e1b2cf7146ec9f9835493a30bd57313d3b86f",
+    "extract_command": "mkdir -p backend/bin; tar -C backend/bin -xf",
+    "exclude_files": [
+        "bin/groestlcoin-qt"
+    ],
+    "exec_command_template": "{{.Env.BackendInstallPath}}/{{.Coin.Alias}}/bin/groestlcoind -datadir={{.Env.BackendDataPath}}/{{.Coin.Alias}}/backend -conf={{.Env.BackendInstallPath}}/{{.Coin.Alias}}/{{.Coin.Alias}}.conf -pid=/run/{{.Coin.Alias}}/{{.Coin.Alias}}.pid",
+    "logrotate_files_template": "{{.Env.BackendDataPath}}/{{.Coin.Alias}}/backend/*.log",
+    "postinst_script_template": "",
+    "service_type": "forking",
+    "service_additional_params_template": "",
+    "protect_memory": true,
+    "mainnet": true,
+    "server_config_file": "bitcoin_like.conf",
+    "client_config_file": "bitcoin_like_client.conf",
+    "additional_params": {
+        "deprecatedrpc": "estimatefee",
+        "whitelist": "127.0.0.1"
+    }
+  },
+  "blockbook": {
+    "package_name": "blockbook-groestlcoin",
+    "system_user": "blockbook-groestlcoin",
+    "internal_binding_template": ":{{.Ports.BlockbookInternal}}",
+    "public_binding_template": ":{{.Ports.BlockbookPublic}}",
+    "explorer_url": "",
+    "additional_params": "",
+    "block_chain": {
+      "parse": true,
+      "mempool_workers": 8,
+      "mempool_sub_workers": 2,
+      "block_addresses_to_keep": 300,
+      "additional_params": {}
+    }
+  },
+  "meta": {
+    "package_maintainer": "Groestlcoin team",
+    "package_maintainer_email": "support@groestlcoin.org"
+  }
+}
diff --git a/configs/coins/groestlcoin_testnet.json b/configs/coins/groestlcoin_testnet.json
new file mode 100644
index 00000000..46bc3248
--- /dev/null
+++ b/configs/coins/groestlcoin_testnet.json
@@ -0,0 +1,66 @@
+{
+  "coin": {
+      "name": "Groestlcoin Testnet",
+      "shortcut": "tGRS",
+      "label": "Groestlcoin Testnet",
+      "alias": "groestlcoin_testnet"
+  },
+  "ports": {
+    "backend_rpc": 18045,
+    "backend_message_queue": 48345,
+    "blockbook_internal": 19045,
+    "blockbook_public": 19145
+  },
+  "ipc": {
+    "rpc_url_template": "http://127.0.0.1:{{.Ports.BackendRPC}}",
+    "rpc_user": "rpc",
+    "rpc_pass": "rpc",
+    "rpc_timeout": 25,
+    "message_queue_binding_template": "tcp://127.0.0.1:{{.Ports.BackendMessageQueue}}"
+  },
+  "backend": {
+    "package_name": "backend-groestlcoin-testnet",
+    "package_revision": "satoshilabs-1",
+    "system_user": "groestlcoin",
+    "version": "2.16.3",
+    "binary_url": "https://github.com/Groestlcoin/groestlcoin/releases/download/v2.16.3/groestlcoin-2.16.3-x86_64-linux-gnu.tar.gz",
+    "verification_type": "sha256",
+    "verification_source": "f15bd5e38b25a103821f1563cd0e1b2cf7146ec9f9835493a30bd57313d3b86f",
+    "extract_command": "mkdir -p backend/bin; tar -C backend/bin -xf",
+    "exclude_files": [
+        "bin/groestlcoin-qt"
+    ],
+    "exec_command_template": "{{.Env.BackendInstallPath}}/{{.Coin.Alias}}/bin/groestlcoind -datadir={{.Env.BackendDataPath}}/{{.Coin.Alias}}/backend -conf={{.Env.BackendInstallPath}}/{{.Coin.Alias}}/{{.Coin.Alias}}.conf -pid=/run/{{.Coin.Alias}}/{{.Coin.Alias}}.pid",
+    "logrotate_files_template": "{{.Env.BackendDataPath}}/{{.Coin.Alias}}/backend/testnet3/*.log",
+    "postinst_script_template": "",
+    "service_type": "forking",
+    "service_additional_params_template": "",
+    "protect_memory": true,
+    "mainnet": false,
+    "server_config_file": "bitcoin_like.conf",
+    "client_config_file": "bitcoin_like_client.conf",
+    "additional_params": {
+        "deprecatedrpc": "estimatefee",
+        "whitelist": "127.0.0.1"
+    }
+  },
+  "blockbook": {
+    "package_name": "blockbook-groestlcoin-testnet",
+    "system_user": "blockbook-groestlcoin",
+    "internal_binding_template": ":{{.Ports.BlockbookInternal}}",
+    "public_binding_template": ":{{.Ports.BlockbookPublic}}",
+    "explorer_url": "",
+    "additional_params": "",
+    "block_chain": {
+      "parse": true,
+      "mempool_workers": 8,
+      "mempool_sub_workers": 2,
+      "block_addresses_to_keep": 300,
+      "additional_params": {}
+    }
+  },
+  "meta": {
+    "package_maintainer": "Groestlcoin team",
+    "package_maintainer_email": "support@groestlcoin.org"
+  }
+}
diff --git a/tests/rpc/testdata/groestlcoin.json b/tests/rpc/testdata/groestlcoin.json
new file mode 100644
index 00000000..b3204694
--- /dev/null
+++ b/tests/rpc/testdata/groestlcoin.json
@@ -0,0 +1,57 @@
+{
+	"blockHeight": 2294439,
+	"blockHash": "0000000000003e6b31abe139b028a97f4fe4dea10fd52a04c404cc85b4d7f773",
+	"blockTime": 1539462668,
+	"blockTxs": [
+		"986e0848c7e0b438ad3816875ed6dc867393897a0e893e6006efefec0197f90d",
+		"dce355dd367e757ead8bbf4480d96885108d9f248d1e74e493ff4693f97cc11c",
+		"4b5f5892a385f75bcd8c5584cea2765f25976b38c450e98bc6d22e342f805ae1",
+		"dfa2ae8837705ee9c5b05ffc652d54dc1b5d38dd836d8b30c5b16c655db8a75b",
+		"0b41b9325d3366a3bba0bf2cf76218ea23ec74aca19c0ce37dc55b5cbcaa8b84",
+		"91a2a72dacf0774c7d4f37e0c9b011a3f747518c20ea6f44ee47d8d35aed4f1a",
+		"f13366400b6ee643f48aa40592382dbf3085c3e31f42e0283b0efd970533c55d",
+		"062f4f5eab8ef188922c197b8becf94ab292f6f1efff57173617b27380a55616"
+	],
+	"txDetails": {
+		"4b5f5892a385f75bcd8c5584cea2765f25976b38c450e98bc6d22e342f805ae1": {
+			"hex": "020000000001011cc17cf99346ff93e4741e8d249f8d108568d98044bf8bad7e757e36dd55e3dc01000000171600142e9f7a9a16b2fcb817752f1f44c7518c83886cdefeffffff02fa76e3e50200000017a914b996e79692d2212707e59235f0a00f2f951c1ba487004d4466170000001976a914fcad3abf614562d224c6cc8b0e00d2fa9016404388ac0247304402206794af78bbfc6f39fa86788bdaff9959af9b519af133e696e2b1226a3df2c0830220254855ae4270af92a6add130efe41222cf150033f5a55225308cd0a39b7b73ee01210352b1a67fef7a34042ff4ed75cd375f22d2f5ea24353d3e6be363f967d9deb612a6022300",
+			"txid": "4b5f5892a385f75bcd8c5584cea2765f25976b38c450e98bc6d22e342f805ae1",
+			"blocktime": 1539462668,
+			"time": 1539462668,
+			"locktime": 2294438,
+			"version": 2,
+			"vin": [
+				{
+					"txid": "dce355dd367e757ead8bbf4480d96885108d9f248d1e74e493ff4693f97cc11c",
+					"vout": 1,
+					"scriptSig": {
+						"hex": "1600142e9f7a9a16b2fcb817752f1f44c7518c83886cde"
+					},
+					"sequence": 4294967294
+				}
+			],
+			"vout": [
+				{
+					"value": 124.46824186,
+					"n": 0,
+					"scriptPubKey": {
+						"hex": "a914b996e79692d2212707e59235f0a00f2f951c1ba487",
+						"addresses": [
+							"3JcKi541GubsiCdpdZqvsSy3rfA6R11tg7"
+						]
+					}
+				},
+				{
+					"value": 1005.00000000,
+					"n": 1,
+					"scriptPubKey": {
+						"hex": "76a914fcad3abf614562d224c6cc8b0e00d2fa9016404388ac",
+						"addresses": [
+							"FtCkFSrwrgiJzjQzGRZvjHzrmHp4HJeGYm"
+						]
+					}
+				}
+			]
+		}
+	}
+}
diff --git a/tests/sync/testdata/groestlcoin.json b/tests/sync/testdata/groestlcoin.json
new file mode 100644
index 00000000..ff475382
--- /dev/null
+++ b/tests/sync/testdata/groestlcoin.json
@@ -0,0 +1,68 @@
+{
+	"connectBlocks": {
+		"syncRanges": [
+			{"lower": 2200724, "upper": 2200744}
+		],
+		"blocks": {
+			"2200744": {
+				"height": 2200744,
+				"hash": "000000000000239eef9c547395bdedb12c05377479a00a6e85cc2eac2ba33e18",
+				"noTxs": 1,
+				"txDetails": [
+					{
+						"hex": "010000000001010000000000000000000000000000000000000000000000000000000000000000ffffffff2003a8942104fb2e685b0837ff5e928d0000000d2f6e6f64655374726174756d2f00000000020000000000000000266a24aa21a9ede2f61c3f71d1defd3fa999dfa36953755c690689799962b48bebd836974e8cf90065cd1d000000001976a9147a2dd8d03f7ae3c1acc88d51213aaf7de20e62d088ac0120000000000000000000000000000000000000000000000000000000000000000000000000",
+						"txid": "d12a3d710831f88c02caaf66a6662b211ec05adfa94392ddc2c57edbb006b299",
+						"version": 1,
+						"vin": [
+							{
+								"coinbase": "03a8942104fb2e685b0837ff5e928d0000000d2f6e6f64655374726174756d2f",
+								"sequence": 0
+							}
+						],
+						"vout": [
+							{
+								"value": 0.00000000,
+								"n": 0,
+								"scriptPubKey": {
+									"hex": "6a24aa21a9ede2f61c3f71d1defd3fa999dfa36953755c690689799962b48bebd836974e8cf9"
+								}
+							},
+							{
+								"value": 5.00000000,
+								"n": 1,
+								"scriptPubKey": {
+									"hex": "76a9147a2dd8d03f7ae3c1acc88d51213aaf7de20e62d088ac"
+								}
+							}
+						]
+					}
+				]
+			}
+		}
+	},
+	"handleFork": {
+		"syncRanges": [
+			{"lower": 2200724, "upper": 2200744}
+		],
+		"fakeBlocks": {
+			"2200744": {
+				"height": 2200744,
+				"hash": "00000000000091c2f138f8e97dfda7256f8aee2d4ee4ad52cefbad837ca50a99"
+			},
+			"2200743": {
+				"height": 2200743,
+				"hash": "000000000001596f4fd5ba68aa7a7e09d1a28096ea520940080fb1c128ca13a4"
+			}
+		},
+		"realBlocks": {
+			"2200744": {
+				"height": 2200744,
+				"hash": "000000000000239eef9c547395bdedb12c05377479a00a6e85cc2eac2ba33e18"
+			},
+			"2200743": {
+				"height": 2200743,
+				"hash": "000000000000b75b5efad34254aef25060f695a532589f993cf07f77986629df"
+			}
+		}
+	}
+}
diff --git a/tests/tests.json b/tests/tests.json
index edf7d24b..f567aba7 100644
--- a/tests/tests.json
+++ b/tests/tests.json
@@ -40,6 +40,11 @@
         "rpc": ["GetBlock", "GetBlockHash", "GetTransaction", "EstimateFee", "GetBestBlockHash", "GetBestBlockHeight",
                 "GetBlockHeader"]
     },
+    "groestlcoin": {
+        "rpc":  ["GetBlock", "GetBlockHash", "GetTransaction", "GetTransactionForMempool", "MempoolSync",
+                 "EstimateSmartFee", "EstimateFee", "GetBestBlockHash", "GetBestBlockHeight", "GetBlockHeader"],
+        "sync": ["ConnectBlocksParallel", "ConnectBlocks", "HandleFork"]
+    },
     "litecoin": {
         "rpc": ["GetBlock", "GetBlockHash", "GetTransaction", "GetTransactionForMempool", "MempoolSync",
                 "EstimateSmartFee", "EstimateFee"],