Merge branch 'master' into decred

2020-12-30 00:27:16 +01:00 · 2020-12-30 00:27:16 +01:00 · 267cea7598
parent 735bd01fb4 295b630ec8
commit 267cea7598
59 changed files with 1942 additions and 454 deletions
--- a/.gitignore
+++ b/.gitignore
@ -8,6 +8,7 @@ debug*
 docker/blockbook
 build/pkg-defs
 build/blockbook
+build/blockchaincfg.json
 build/ldb
 build/sst_dump
 build/*.deb
--- a/17
+++ b/17
@ -2,7 +2,6 @@ BIN_IMAGE = blockbook-build
 DEB_IMAGE = blockbook-build-deb
 PACKAGER = $(shell id -u):$(shell id -g)
 NO_CACHE = false
-UPDATE_VENDOR = 1
 ARGS ?=

 TARGETS=$(subst .json,, $(shell ls configs/coins))
@ -10,28 +9,28 @@ TARGETS=$(subst .json,, $(shell ls configs/coins))
 .PHONY: build build-debug test deb

 build: .bin-image
-	docker run -t --rm -e PACKAGER=$(PACKAGER) -e UPDATE_VENDOR=$(UPDATE_VENDOR) -v "$(CURDIR):/src" -v "$(CURDIR)/build:/out" $(BIN_IMAGE) make build ARGS="$(ARGS)"
+	docker run -t --rm -e PACKAGER=$(PACKAGER) -v "$(CURDIR):/src" -v "$(CURDIR)/build:/out" $(BIN_IMAGE) make build ARGS="$(ARGS)"

 build-debug: .bin-image
-	docker run -t --rm -e PACKAGER=$(PACKAGER) -e UPDATE_VENDOR=$(UPDATE_VENDOR) -v "$(CURDIR):/src" -v "$(CURDIR)/build:/out" $(BIN_IMAGE) make build-debug ARGS="$(ARGS)"
+	docker run -t --rm -e PACKAGER=$(PACKAGER) -v "$(CURDIR):/src" -v "$(CURDIR)/build:/out" $(BIN_IMAGE) make build-debug ARGS="$(ARGS)"

 test: .bin-image
-	docker run -t --rm -e PACKAGER=$(PACKAGER) -e UPDATE_VENDOR=$(UPDATE_VENDOR) -v "$(CURDIR):/src" --network="host" $(BIN_IMAGE) make test ARGS="$(ARGS)"
+	docker run -t --rm -e PACKAGER=$(PACKAGER) -v "$(CURDIR):/src" --network="host" $(BIN_IMAGE) make test ARGS="$(ARGS)"

 test-integration: .bin-image
-	docker run -t --rm -e PACKAGER=$(PACKAGER) -e UPDATE_VENDOR=$(UPDATE_VENDOR) -v "$(CURDIR):/src" --network="host" $(BIN_IMAGE) make test-integration ARGS="$(ARGS)"
+	docker run -t --rm -e PACKAGER=$(PACKAGER) -v "$(CURDIR):/src" --network="host" $(BIN_IMAGE) make test-integration ARGS="$(ARGS)"

 test-all: .bin-image
-	docker run -t --rm -e PACKAGER=$(PACKAGER) -e UPDATE_VENDOR=$(UPDATE_VENDOR) -v "$(CURDIR):/src" --network="host" $(BIN_IMAGE) make test-all ARGS="$(ARGS)"
+	docker run -t --rm -e PACKAGER=$(PACKAGER) -v "$(CURDIR):/src" --network="host" $(BIN_IMAGE) make test-all ARGS="$(ARGS)"

 deb-backend-%: .deb-image
-	docker run -t --rm -e PACKAGER=$(PACKAGER) -e UPDATE_VENDOR=$(UPDATE_VENDOR) -v "$(CURDIR):/src" -v "$(CURDIR)/build:/out" $(DEB_IMAGE) /build/build-deb.sh backend $* $(ARGS)
+	docker run -t --rm -e PACKAGER=$(PACKAGER) -v "$(CURDIR):/src" -v "$(CURDIR)/build:/out" $(DEB_IMAGE) /build/build-deb.sh backend $* $(ARGS)

 deb-blockbook-%: .deb-image
-	docker run -t --rm -e PACKAGER=$(PACKAGER) -e UPDATE_VENDOR=$(UPDATE_VENDOR) -v "$(CURDIR):/src" -v "$(CURDIR)/build:/out" $(DEB_IMAGE) /build/build-deb.sh blockbook $* $(ARGS)
+	docker run -t --rm -e PACKAGER=$(PACKAGER) -v "$(CURDIR):/src" -v "$(CURDIR)/build:/out" $(DEB_IMAGE) /build/build-deb.sh blockbook $* $(ARGS)

 deb-%: .deb-image
-	docker run -t --rm -e PACKAGER=$(PACKAGER) -e UPDATE_VENDOR=$(UPDATE_VENDOR) -v "$(CURDIR):/src" -v "$(CURDIR)/build:/out" $(DEB_IMAGE) /build/build-deb.sh all $* $(ARGS)
+	docker run -t --rm -e PACKAGER=$(PACKAGER) -v "$(CURDIR):/src" -v "$(CURDIR)/build:/out" $(DEB_IMAGE) /build/build-deb.sh all $* $(ARGS)

 deb-blockbook-all: clean-deb $(addprefix deb-blockbook-, $(TARGETS))

--- a/api/types.go
+++ b/api/types.go
@ -196,8 +196,7 @@ type Tx struct {
 	FeesSat          *Amount           `json:"fees,omitempty"`
 	Hex              string            `json:"hex,omitempty"`
 	Rbf              bool              `json:"rbf,omitempty"`
-	CoinSpecificData interface{}       `json:"-"`
-	CoinSpecificJSON json.RawMessage   `json:"-"`
+	CoinSpecificData json.RawMessage   `json:"coinSpecificData,omitempty"`
 	TokenTransfers   []TokenTransfer   `json:"tokenTransfers,omitempty"`
 	EthereumSpecific *EthereumSpecific `json:"ethereumSpecific,omitempty"`
 }
--- a/api/worker.go
+++ b/api/worker.go
@ -274,7 +274,8 @@ func (w *Worker) GetTransactionFromBchainTx(bchainTx *bchain.Tx, height int, spe
 	// for now do not return size, we would have to compute vsize of segwit transactions
 	// size:=len(bchainTx.Hex) / 2
 	var sj json.RawMessage
-	if specificJSON {
+	// return CoinSpecificData for all mempool transactions or if requested
+	if specificJSON || bchainTx.Confirmations == 0 {
 		sj, err = w.chain.GetTransactionSpecific(bchainTx)
 		if err != nil {
 			return nil, err
@ -299,8 +300,7 @@ func (w *Worker) GetTransactionFromBchainTx(bchainTx *bchain.Tx, height int, spe
 		Rbf:              rbf,
 		Vin:              vins,
 		Vout:             vouts,
-		CoinSpecificData: bchainTx.CoinSpecificData,
-		CoinSpecificJSON: sj,
+		CoinSpecificData: sj,
 		TokenTransfers:   tokens,
 		EthereumSpecific: ethSpecific,
 	}
@ -758,7 +758,7 @@ func (w *Worker) txFromTxid(txid string, bestheight uint32, option AccountDetail
 		if ta == nil {
 			glog.Warning("DB inconsistency:  tx ", txid, ": not found in txAddresses")
 			// as fallback, get tx from backend
-			tx, err = w.GetTransaction(txid, false, true)
+			tx, err = w.GetTransaction(txid, false, false)
 			if err != nil {
 				return nil, errors.Annotatef(err, "GetTransaction %v", txid)
 			}
@ -777,7 +777,7 @@ func (w *Worker) txFromTxid(txid string, bestheight uint32, option AccountDetail
 			tx = w.txFromTxAddress(txid, ta, blockInfo, bestheight)
 		}
 	} else {
-		tx, err = w.GetTransaction(txid, false, true)
+		tx, err = w.GetTransaction(txid, false, false)
 		if err != nil {
 			return nil, errors.Annotatef(err, "GetTransaction %v", txid)
 		}
@ -866,7 +866,7 @@ func (w *Worker) GetAddress(address string, page int, txsOnPage int, option Acco
 			return nil, errors.Annotatef(err, "getAddressTxids %v true", addrDesc)
 		}
 		for _, txid := range txm {
-			tx, err := w.GetTransaction(txid, false, false)
+			tx, err := w.GetTransaction(txid, false, true)
 			// mempool transaction may fail
 			if err != nil || tx == nil {
 				glog.Warning("GetTransaction in mempool: ", err)
--- a/api/xpub.go
+++ b/api/xpub.go
@ -416,7 +416,7 @@ func (w *Worker) GetXpubAddress(xpub string, page int, txsOnPage int, option Acc
 					// the same tx can have multiple addresses from the same xpub, get it from backend it only once
 					tx, foundTx := txmMap[txid.txid]
 					if !foundTx {
-						tx, err = w.GetTransaction(txid.txid, false, false)
+						tx, err = w.GetTransaction(txid.txid, false, true)
 						// mempool transaction may fail
 						if err != nil || tx == nil {
 							glog.Warning("GetTransaction in mempool: ", err)
--- a/bchain/coins/blockchain.go
+++ b/bchain/coins/blockchain.go
@ -44,11 +44,12 @@ import (
 	"github.com/trezor/blockbook/bchain/coins/ravencoin"
 	"github.com/trezor/blockbook/bchain/coins/ritocoin"
 	"github.com/trezor/blockbook/bchain/coins/snowgem"
+	"github.com/trezor/blockbook/bchain/coins/trezarcoin"
 	"github.com/trezor/blockbook/bchain/coins/unobtanium"
 	"github.com/trezor/blockbook/bchain/coins/vertcoin"
 	"github.com/trezor/blockbook/bchain/coins/viacoin"
 	"github.com/trezor/blockbook/bchain/coins/vipstarcoin"
-	"github.com/trezor/blockbook/bchain/coins/xzc"
+	"github.com/trezor/blockbook/bchain/coins/firo"
 	"github.com/trezor/blockbook/bchain/coins/zec"
 	"github.com/trezor/blockbook/common"
 )
@ -61,6 +62,7 @@ var BlockChainFactories = make(map[string]blockChainFactory)
 func init() {
 	BlockChainFactories["Bitcoin"] = btc.NewBitcoinRPC
 	BlockChainFactories["Testnet"] = btc.NewBitcoinRPC
+	BlockChainFactories["Signet"] = btc.NewBitcoinRPC
 	BlockChainFactories["Zcash"] = zec.NewZCashRPC
 	BlockChainFactories["Zcash Testnet"] = zec.NewZCashRPC
 	BlockChainFactories["Ethereum"] = eth.NewEthereumRPC
@ -69,6 +71,7 @@ func init() {
 	BlockChainFactories["Bcash"] = bch.NewBCashRPC
 	BlockChainFactories["Bcash Testnet"] = bch.NewBCashRPC
 	BlockChainFactories["Bgold"] = btg.NewBGoldRPC
+	BlockChainFactories["Bgold Testnet"] = btg.NewBGoldRPC
 	BlockChainFactories["Dash"] = dash.NewDashRPC
 	BlockChainFactories["Dash Testnet"] = dash.NewDashRPC
 	BlockChainFactories["Decred"] = dcr.NewDecredRPC
@ -94,7 +97,7 @@ func init() {
 	BlockChainFactories["PIVX"] = pivx.NewPivXRPC
 	BlockChainFactories["PIVX Testnet"] = pivx.NewPivXRPC
 	BlockChainFactories["Polis"] = polis.NewPolisRPC
-	BlockChainFactories["Zcoin"] = xzc.NewZcoinRPC
+	BlockChainFactories["Firo"] = firo.NewFiroRPC
 	BlockChainFactories["Fujicoin"] = fujicoin.NewFujicoinRPC
 	BlockChainFactories["Flo"] = flo.NewFloRPC
 	BlockChainFactories["Bellcoin"] = bellcoin.NewBellcoinRPC
@ -115,6 +118,7 @@ func init() {
 	BlockChainFactories["Omotenashicoin"] = omotenashicoin.NewOmotenashiCoinRPC
 	BlockChainFactories["Omotenashicoin Testnet"] = omotenashicoin.NewOmotenashiCoinRPC
 	BlockChainFactories["BitZeny"] = bitzeny.NewBitZenyRPC
+	BlockChainFactories["Trezarcoin"] = trezarcoin.NewTrezarcoinRPC
 }

 // GetCoinNameFromConfig gets coin name and coin shortcut from config file
--- a/bchain/coins/btc/bitcoinparser.go
+++ b/bchain/coins/btc/bitcoinparser.go
@ -18,6 +18,22 @@ import (
 	"github.com/trezor/blockbook/bchain"
 )

+// temp params for signet(wait btcd commit)
+// magic numbers
+const (
+	SignetMagic wire.BitcoinNet = 0x6a70c7f0
+)
+
+// chain parameters
+var (
+	SigNetParams chaincfg.Params
+)
+
+func init() {
+	SigNetParams = chaincfg.TestNet3Params
+	SigNetParams.Net = SignetMagic
+}
+
 // OutputScriptToAddressesFunc converts ScriptPubKey to bitcoin addresses
 type OutputScriptToAddressesFunc func(script []byte) ([]string, bool, error)

@ -63,6 +79,8 @@ func GetChainParams(chain string) *chaincfg.Params {
 		return &chaincfg.TestNet3Params
 	case "regtest":
 		return &chaincfg.RegressionNetParams
+	case "signet":
+		return &SigNetParams
 	}
 	return &chaincfg.MainNetParams
 }
--- a/bchain/coins/btc/bitcoinparser_test.go
+++ b/bchain/coins/btc/bitcoinparser_test.go
@ -259,10 +259,11 @@ func TestGetAddressesFromAddrDesc(t *testing.T) {
 }

 var (
-	testTx1, testTx2 bchain.Tx
+	testTx1, testTx2, testTx3 bchain.Tx

 	testTxPacked1 = "0001e2408ba8d7af5401000000017f9a22c9cbf54bd902400df746f138f37bcf5b4d93eb755820e974ba43ed5f42040000006a4730440220037f4ed5427cde81d55b9b6a2fd08c8a25090c2c2fff3a75c1a57625ca8a7118022076c702fe55969fa08137f71afd4851c48e31082dd3c40c919c92cdbc826758d30121029f6da5623c9f9b68a9baf9c1bc7511df88fa34c6c2f71f7c62f2f03ff48dca80feffffff019c9700000000000017a9146144d57c8aff48492c9dfb914e120b20bad72d6f8773d00700"
 	testTxPacked2 = "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"
+	testTxPacked3 = "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"
 )

 func init() {
@ -335,6 +336,54 @@ func init() {
 			},
 		},
 	}
+
+	testTx3 = bchain.Tx{
+		Hex:       "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",
+		Blocktime: 1607805599,
+		Txid:      "24551a58a1d1fb89d7052e2bbac7cb69a7825ee1e39439befbec8c32148cf735",
+		LockTime:  15745,
+		Version:   2,
+		Vin: []bchain.Vin{
+			{
+				ScriptSig: bchain.ScriptSig{
+					Hex: "",
+				},
+				Txid:     "9d8b6a98d942ce077574fff2e5dd9e405ba75ed9fb126b3da1b07a859a99b1de",
+				Vout:     0,
+				Sequence: 4294967293,
+			},
+			{
+				ScriptSig: bchain.ScriptSig{
+					Hex: "",
+				},
+				Txid:     "98227ffe94726bc77c3c587e1e5375305beffb8e43a6eb75233b201e36d3d29f",
+				Vout:     0,
+				Sequence: 4294967293,
+			},
+		},
+		Vout: []bchain.Vout{
+			{
+				ValueSat: *big.NewInt(100000),
+				N:        0,
+				ScriptPubKey: bchain.ScriptPubKey{
+					Hex: "00148091746745464e7555c31e9a5afceac14a02978a",
+					Addresses: []string{
+						"tb1qszghge69ge8824wrr6d94l82c99q99u2ccgv5w",
+					},
+				},
+			},
+			{
+				ValueSat: *big.NewInt(1899751),
+				N:        1,
+				ScriptPubKey: bchain.ScriptPubKey{
+					Hex: "0014565ea9ff4589d3e05ba149ae6e257752bfdc2a1e",
+					Addresses: []string{
+						"tb1q2e02nl6938f7qkapfxhxufth22lac2s792vsxp",
+					},
+				},
+			},
+		},
+	}
 }

 func TestPackTx(t *testing.T) {
@ -372,6 +421,17 @@ func TestPackTx(t *testing.T) {
 			want:    testTxPacked2,
 			wantErr: false,
 		},
+		{
+			name: "signet-1",
+			args: args{
+				tx:        testTx3,
+				height:    15745,
+				blockTime: 1607805599,
+				parser:    NewBitcoinParser(GetChainParams("signet"), &Configuration{}),
+			},
+			want:    testTxPacked3,
+			wantErr: false,
+		},
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
@ -420,6 +480,16 @@ func TestUnpackTx(t *testing.T) {
 			want1:   510234,
 			wantErr: false,
 		},
+		{
+			name: "signet-1",
+			args: args{
+				packedTx: testTxPacked3,
+				parser:   NewBitcoinParser(GetChainParams("signet"), &Configuration{}),
+			},
+			want:    &testTx3,
+			want1:   15745,
+			wantErr: false,
+		},
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
--- a/bchain/coins/eth/ethparser.go
+++ b/bchain/coins/eth/ethparser.go
@ -311,8 +311,14 @@ func (p *EthereumParser) PackTx(tx *bchain.Tx, height uint32, blockTime int64) (
 		if pt.Receipt.GasUsed, err = hexDecodeBig(r.Receipt.GasUsed); err != nil {
 			return nil, errors.Annotatef(err, "GasUsed %v", r.Receipt.GasUsed)
 		}
-		if pt.Receipt.Status, err = hexDecodeBig(r.Receipt.Status); err != nil {
-			return nil, errors.Annotatef(err, "Status %v", r.Receipt.Status)
+		if r.Receipt.Status != "" {
+			if pt.Receipt.Status, err = hexDecodeBig(r.Receipt.Status); err != nil {
+				return nil, errors.Annotatef(err, "Status %v", r.Receipt.Status)
+			}
+		} else {
+			// unknown status, use 'U' as status bytes
+			// there is a potential for conflict with value 0x55 but this is not used by any chain at this moment
+			pt.Receipt.Status = []byte{'U'}
 		}
 		ptLogs := make([]*ProtoCompleteTransaction_ReceiptType_LogType, len(r.Receipt.Logs))
 		for i, l := range r.Receipt.Logs {
@ -379,9 +385,14 @@ func (p *EthereumParser) UnpackTx(buf []byte) (*bchain.Tx, uint32, error) {
 				Topics:  topics,
 			}
 		}
+		status := ""
+		// handle a special value []byte{'U'} as unknown state
+		if len(pt.Receipt.Status) != 1 || pt.Receipt.Status[0] != 'U' {
+			status = hexEncodeBig(pt.Receipt.Status)
+		}
 		rr = &rpcReceipt{
 			GasUsed: hexEncodeBig(pt.Receipt.GasUsed),
-			Status:  hexEncodeBig(pt.Receipt.Status),
+			Status:  status,
 			Logs:    logs,
 		}
 	}
--- a/bchain/coins/eth/ethparser_test.go
+++ b/bchain/coins/eth/ethparser_test.go
@ -68,7 +68,7 @@ func TestEthParser_GetAddrDescFromAddress(t *testing.T) {
 	}
 }

-var testTx1, testTx2 bchain.Tx
+var testTx1, testTx2, testTx1Failed, testTx1NoStatus bchain.Tx

 func init() {

@ -156,6 +156,83 @@ func init() {
 			},
 		},
 	}
+
+	testTx1Failed = bchain.Tx{
+		Blocktime: 1534858022,
+		Time:      1534858022,
+		Txid:      "0xcd647151552b5132b2aef7c9be00dc6f73afc5901dde157aab131335baaa853b",
+		Vin: []bchain.Vin{
+			{
+				Addresses: []string{"0x3E3a3D69dc66bA10737F531ed088954a9EC89d97"},
+			},
+		},
+		Vout: []bchain.Vout{
+			{
+				ValueSat: *big.NewInt(1999622000000000000),
+				ScriptPubKey: bchain.ScriptPubKey{
+					Addresses: []string{"0x555Ee11FBDDc0E49A9bAB358A8941AD95fFDB48f"},
+				},
+			},
+		},
+		CoinSpecificData: completeTransaction{
+			Tx: &rpcTransaction{
+				AccountNonce:     "0xb26c",
+				GasPrice:         "0x430e23400",
+				GasLimit:         "0x5208",
+				To:               "0x555Ee11FBDDc0E49A9bAB358A8941AD95fFDB48f",
+				Value:            "0x1bc0159d530e6000",
+				Payload:          "0x",
+				Hash:             "0xcd647151552b5132b2aef7c9be00dc6f73afc5901dde157aab131335baaa853b",
+				BlockNumber:      "0x41eee8",
+				From:             "0x3E3a3D69dc66bA10737F531ed088954a9EC89d97",
+				TransactionIndex: "0xa",
+			},
+			Receipt: &rpcReceipt{
+				GasUsed: "0x5208",
+				Status:  "0x0",
+				Logs:    []*rpcLog{},
+			},
+		},
+	}
+
+	testTx1NoStatus = bchain.Tx{
+		Blocktime: 1534858022,
+		Time:      1534858022,
+		Txid:      "0xcd647151552b5132b2aef7c9be00dc6f73afc5901dde157aab131335baaa853b",
+		Vin: []bchain.Vin{
+			{
+				Addresses: []string{"0x3E3a3D69dc66bA10737F531ed088954a9EC89d97"},
+			},
+		},
+		Vout: []bchain.Vout{
+			{
+				ValueSat: *big.NewInt(1999622000000000000),
+				ScriptPubKey: bchain.ScriptPubKey{
+					Addresses: []string{"0x555Ee11FBDDc0E49A9bAB358A8941AD95fFDB48f"},
+				},
+			},
+		},
+		CoinSpecificData: completeTransaction{
+			Tx: &rpcTransaction{
+				AccountNonce:     "0xb26c",
+				GasPrice:         "0x430e23400",
+				GasLimit:         "0x5208",
+				To:               "0x555Ee11FBDDc0E49A9bAB358A8941AD95fFDB48f",
+				Value:            "0x1bc0159d530e6000",
+				Payload:          "0x",
+				Hash:             "0xcd647151552b5132b2aef7c9be00dc6f73afc5901dde157aab131335baaa853b",
+				BlockNumber:      "0x41eee8",
+				From:             "0x3E3a3D69dc66bA10737F531ed088954a9EC89d97",
+				TransactionIndex: "0xa",
+			},
+			Receipt: &rpcReceipt{
+				GasUsed: "0x5208",
+				Status:  "",
+				Logs:    []*rpcLog{},
+			},
+		},
+	}
+
 }

 func TestEthereumParser_PackTx(t *testing.T) {
@ -189,6 +266,24 @@ func TestEthereumParser_PackTx(t *testing.T) {
 			},
 			want: dbtestdata.EthTx2Packed,
 		},
+		{
+			name: "3",
+			args: args{
+				tx:        &testTx1Failed,
+				height:    4321000,
+				blockTime: 1534858022,
+			},
+			want: dbtestdata.EthTx1FailedPacked,
+		},
+		{
+			name: "4",
+			args: args{
+				tx:        &testTx1NoStatus,
+				height:    4321000,
+				blockTime: 1534858022,
+			},
+			want: dbtestdata.EthTx1NoStatusPacked,
+		},
 	}
 	p := NewEthereumParser(1)
 	for _, tt := range tests {
@ -230,6 +325,18 @@ func TestEthereumParser_UnpackTx(t *testing.T) {
 			want:  &testTx2,
 			want1: 4321000,
 		},
+		{
+			name:  "3",
+			args:  args{hex: dbtestdata.EthTx1FailedPacked},
+			want:  &testTx1Failed,
+			want1: 4321000,
+		},
+		{
+			name:  "4",
+			args:  args{hex: dbtestdata.EthTx1NoStatusPacked},
+			want:  &testTx1NoStatus,
+			want1: 4321000,
+		},
 	}
 	p := NewEthereumParser(1)
 	for _, tt := range tests {
--- a/bchain/coins/eth/ethtx.pb.go
+++ b/bchain/coins/eth/ethtx.pb.go
@ -1,11 +1,11 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
-// source: tx.proto
+// source: bchain/coins/eth/ethtx.proto

 /*
 Package eth is a generated protocol buffer package.

 It is generated from these files:
-	tx.proto
+	bchain/coins/eth/ethtx.proto

 It has these top-level messages:
 	ProtoCompleteTransaction
@ -228,33 +228,34 @@ func init() {
 	proto.RegisterType((*ProtoCompleteTransaction_ReceiptType_LogType)(nil), "eth.ProtoCompleteTransaction.ReceiptType.LogType")
 }

-func init() { proto.RegisterFile("tx.proto", fileDescriptor0) }
+func init() { proto.RegisterFile("bchain/coins/eth/ethtx.proto", fileDescriptor0) }

 var fileDescriptor0 = []byte{
-	// 393 bytes of a gzipped FileDescriptorProto
+	// 409 bytes of a gzipped FileDescriptorProto
 	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x8c, 0x92, 0xdf, 0x8a, 0xd4, 0x30,
-	0x14, 0xc6, 0xe9, 0x9f, 0xf9, 0xb3, 0xa7, 0x55, 0x24, 0x88, 0x84, 0xe2, 0x45, 0x59, 0xbc, 0xa8,
-	0x5e, 0x14, 0x5c, 0x7d, 0x81, 0x75, 0xc4, 0x55, 0x18, 0xd6, 0x21, 0x46, 0xef, 0xb3, 0x69, 0xd8,
-	0x29, 0xb6, 0x4d, 0x69, 0x52, 0xe8, 0xbe, 0x91, 0x2f, 0xe4, 0xbb, 0x78, 0x29, 0x39, 0x4d, 0xd7,
-	0x11, 0x51, 0xbc, 0x3b, 0xbf, 0x6f, 0xce, 0x37, 0xf9, 0xbe, 0xa4, 0xb0, 0xb5, 0x53, 0xd9, 0x0f,
-	0xda, 0x6a, 0x12, 0x29, 0x7b, 0x3c, 0xff, 0xb6, 0x02, 0x7a, 0x70, 0xb8, 0xd3, 0x6d, 0xdf, 0x28,
-	0xab, 0xf8, 0x20, 0x3a, 0x23, 0xa4, 0xad, 0x75, 0x47, 0x72, 0x48, 0xde, 0x34, 0x5a, 0x7e, 0xbd,
-	0x1e, 0xdb, 0x1b, 0x35, 0xd0, 0x20, 0x0f, 0x8a, 0x07, 0xec, 0x54, 0x22, 0x4f, 0xe1, 0x0c, 0x91,
-	0xd7, 0xad, 0xa2, 0x61, 0x1e, 0x14, 0x31, 0xfb, 0x25, 0x90, 0xd7, 0x10, 0xf2, 0x89, 0x46, 0x79,
-	0x50, 0x24, 0x17, 0xcf, 0x4a, 0x65, 0x8f, 0xe5, 0xdf, 0x8e, 0x2a, 0xf9, 0xc4, 0xef, 0x7a, 0xc5,
-	0x42, 0x3e, 0x91, 0x1d, 0x6c, 0x98, 0x92, 0xaa, 0xee, 0x2d, 0x8d, 0xd1, 0xfa, 0xfc, 0xdf, 0x56,
-	0xbf, 0x8c, 0xfe, 0xc5, 0x99, 0xfd, 0x08, 0x60, 0x3d, 0xff, 0x27, 0x39, 0x87, 0xf4, 0x52, 0x4a,
-	0x3d, 0x76, 0xf6, 0x5a, 0x77, 0x52, 0x61, 0x8d, 0x98, 0xfd, 0xa6, 0x91, 0x0c, 0xb6, 0x57, 0xc2,
-	0x1c, 0x86, 0x5a, 0xce, 0x35, 0x52, 0x76, 0xcf, 0xfe, 0xb7, 0x7d, 0xdd, 0xd6, 0x16, 0xbb, 0xc4,
-	0xec, 0x9e, 0xc9, 0x63, 0x58, 0x7d, 0x11, 0xcd, 0xa8, 0x30, 0x69, 0xca, 0x66, 0x20, 0x14, 0x36,
-	0x07, 0x71, 0xd7, 0x68, 0x51, 0xd1, 0x15, 0xea, 0x0b, 0x12, 0x02, 0xf1, 0x7b, 0x61, 0x8e, 0x74,
-	0x8d, 0x32, 0xce, 0xe4, 0x21, 0x84, 0x5c, 0xd3, 0x0d, 0x2a, 0x21, 0xd7, 0x6e, 0xe7, 0xdd, 0xa0,
-	0x5b, 0xba, 0x9d, 0x77, 0xdc, 0x4c, 0x5e, 0xc0, 0xa3, 0x93, 0xca, 0x1f, 0xba, 0x4a, 0x4d, 0xf4,
-	0x0c, 0x9f, 0xe3, 0x0f, 0x3d, 0xfb, 0x1e, 0x40, 0x72, 0x72, 0x27, 0x2e, 0xcd, 0x95, 0x30, 0x9f,
-	0x8d, 0xaa, 0xb0, 0x7a, 0xca, 0x16, 0x24, 0x4f, 0x60, 0xfd, 0xc9, 0x0a, 0x3b, 0x1a, 0xdf, 0xd9,
-	0x13, 0xd9, 0x41, 0xb4, 0xd7, 0xb7, 0x34, 0xca, 0xa3, 0x22, 0xb9, 0x78, 0xf9, 0xdf, 0xb7, 0x5f,
-	0xee, 0xf5, 0x2d, 0xbe, 0x82, 0x73, 0x67, 0x1f, 0x61, 0xe3, 0xd9, 0x25, 0xb8, 0xac, 0xaa, 0x41,
-	0x19, 0xb3, 0x24, 0xf0, 0xe8, 0xba, 0xbe, 0x15, 0x56, 0xf8, 0xf3, 0x71, 0x76, 0xa9, 0xb8, 0xee,
-	0x6b, 0x69, 0x30, 0x40, 0xca, 0x3c, 0xdd, 0xac, 0xf1, 0xb3, 0x7d, 0xf5, 0x33, 0x00, 0x00, 0xff,
-	0xff, 0xde, 0xd5, 0x28, 0xa3, 0xc2, 0x02, 0x00, 0x00,
+	0x18, 0xc5, 0xe9, 0x9f, 0x99, 0xd9, 0xfd, 0xa6, 0x8a, 0x04, 0x91, 0x30, 0xec, 0x45, 0x59, 0xbc,
+	0x18, 0xbd, 0xe8, 0xe2, 0xea, 0x0b, 0xac, 0x23, 0xae, 0xc2, 0xb0, 0x0e, 0x31, 0x7a, 0x9f, 0x49,
+	0xc3, 0x36, 0x38, 0x6d, 0x4a, 0x93, 0x42, 0xf7, 0x8d, 0x7c, 0x21, 0xdf, 0xc5, 0x4b, 0xc9, 0xd7,
+	0x74, 0x1d, 0x11, 0x65, 0x2f, 0x0a, 0xf9, 0x9d, 0x7e, 0xa7, 0x39, 0x27, 0x29, 0x9c, 0xed, 0x65,
+	0x25, 0x74, 0x73, 0x21, 0x8d, 0x6e, 0xec, 0x85, 0x72, 0x95, 0x7f, 0xdc, 0x50, 0xb4, 0x9d, 0x71,
+	0x86, 0x24, 0xca, 0x55, 0xe7, 0xdf, 0x67, 0x40, 0x77, 0x1e, 0x37, 0xa6, 0x6e, 0x0f, 0xca, 0x29,
+	0xde, 0x89, 0xc6, 0x0a, 0xe9, 0xb4, 0x69, 0x48, 0x0e, 0xcb, 0xb7, 0x07, 0x23, 0xbf, 0xdd, 0xf4,
+	0xf5, 0x5e, 0x75, 0x34, 0xca, 0xa3, 0xf5, 0x23, 0x76, 0x2c, 0x91, 0x33, 0x38, 0x45, 0xe4, 0xba,
+	0x56, 0x34, 0xce, 0xa3, 0x75, 0xca, 0x7e, 0x0b, 0xe4, 0x0d, 0xc4, 0x7c, 0xa0, 0x49, 0x1e, 0xad,
+	0x97, 0x97, 0xcf, 0x0b, 0xe5, 0xaa, 0xe2, 0x5f, 0x5b, 0x15, 0x7c, 0xe0, 0x77, 0xad, 0x62, 0x31,
+	0x1f, 0xc8, 0x06, 0x16, 0x4c, 0x49, 0xa5, 0x5b, 0x47, 0x53, 0xb4, 0xbe, 0xf8, 0xbf, 0x35, 0x0c,
+	0xa3, 0x7f, 0x72, 0xae, 0x7e, 0x46, 0x30, 0x1f, 0xbf, 0x49, 0xce, 0x21, 0xbb, 0x92, 0xd2, 0xf4,
+	0x8d, 0xbb, 0x31, 0x8d, 0x54, 0x58, 0x23, 0x65, 0x7f, 0x68, 0x64, 0x05, 0x27, 0xd7, 0xc2, 0xee,
+	0x3a, 0x2d, 0xc7, 0x1a, 0x19, 0xbb, 0xe7, 0xf0, 0x6e, 0xab, 0x6b, 0xed, 0xb0, 0x4b, 0xca, 0xee,
+	0x99, 0x3c, 0x85, 0xd9, 0x57, 0x71, 0xe8, 0x15, 0x26, 0xcd, 0xd8, 0x08, 0x84, 0xc2, 0x62, 0x27,
+	0xee, 0x0e, 0x46, 0x94, 0x74, 0x86, 0xfa, 0x84, 0x84, 0x40, 0xfa, 0x41, 0xd8, 0x8a, 0xce, 0x51,
+	0xc6, 0x35, 0x79, 0x0c, 0x31, 0x37, 0x74, 0x81, 0x4a, 0xcc, 0x8d, 0x9f, 0x79, 0xdf, 0x99, 0x9a,
+	0x9e, 0x8c, 0x33, 0x7e, 0x4d, 0x5e, 0xc2, 0x93, 0xa3, 0xca, 0x1f, 0x9b, 0x52, 0x0d, 0xf4, 0x14,
+	0xaf, 0xe3, 0x2f, 0x7d, 0xf5, 0x23, 0x82, 0xe5, 0xd1, 0x99, 0xf8, 0x34, 0xd7, 0xc2, 0x7e, 0xb1,
+	0xaa, 0xc4, 0xea, 0x19, 0x9b, 0x90, 0x3c, 0x83, 0xf9, 0x67, 0x27, 0x5c, 0x6f, 0x43, 0xe7, 0x40,
+	0x64, 0x03, 0xc9, 0xd6, 0xdc, 0xd2, 0x24, 0x4f, 0xd6, 0xcb, 0xcb, 0x57, 0x0f, 0x3e, 0xfd, 0x62,
+	0x6b, 0x6e, 0xf1, 0x16, 0xbc, 0x7b, 0xf5, 0x09, 0x16, 0x81, 0x7d, 0x82, 0xab, 0xb2, 0xec, 0x94,
+	0xb5, 0x53, 0x82, 0x80, 0xbe, 0xeb, 0x3b, 0xe1, 0x44, 0xd8, 0x1f, 0xd7, 0x3e, 0x15, 0x37, 0xad,
+	0x96, 0x16, 0x03, 0x64, 0x2c, 0xd0, 0x7e, 0x8e, 0xbf, 0xed, 0xeb, 0x5f, 0x01, 0x00, 0x00, 0xff,
+	0xff, 0xc2, 0x69, 0x8d, 0xdf, 0xd6, 0x02, 0x00, 0x00,
 }
--- a/bchain/coins/eth/ethtx.proto
+++ b/bchain/coins/eth/ethtx.proto
--- a/bchain/coins/firo/firomsgtx.go
+++ b/bchain/coins/firo/firomsgtx.go
@ -1,4 +1,4 @@
-package xzc
+package firo

 import (
 	"bytes"
@ -8,14 +8,14 @@ import (
 	"github.com/martinboehm/btcd/wire"
 )

-// ZcoinMsgTx encapsulate zcoin tx and extra
-type ZcoinMsgTx struct {
+// FiroMsgTx encapsulate firo tx and extra
+type FiroMsgTx struct {
 	wire.MsgTx
 	Extra []byte
 }

 // TxHash calculate hash of transaction
-func (msg *ZcoinMsgTx) TxHash() chainhash.Hash {
+func (msg *FiroMsgTx) TxHash() chainhash.Hash {
 	extraSize := uint64(len(msg.Extra))
 	sizeOfExtraSize := 0
 	if extraSize != 0 {
@ -36,8 +36,8 @@ func (msg *ZcoinMsgTx) TxHash() chainhash.Hash {
 	return chainhash.DoubleHashH(buf.Bytes())
 }

-// XzcDecode to decode bitcoin tx and extra
-func (msg *ZcoinMsgTx) XzcDecode(r io.Reader, pver uint32, enc wire.MessageEncoding) error {
+// FiroDecode to decode bitcoin tx and extra
+func (msg *FiroMsgTx) FiroDecode(r io.Reader, pver uint32, enc wire.MessageEncoding) error {
 	if err := msg.MsgTx.BtcDecode(r, pver, enc); err != nil {
 		return err
 	}
--- a/bchain/coins/firo/firoparser.go
+++ b/bchain/coins/firo/firoparser.go
@ -1,4 +1,4 @@
-package xzc
+package firo

 import (
 	"bytes"
@ -14,10 +14,13 @@ import (
 )

 const (
-	OpZeroCoinMint  = 0xc1
-	OpZeroCoinSpend = 0xc2
-	OpSigmaMint     = 0xc3
-	OpSigmaSpend    = 0xc4
+	OpZeroCoinMint  		= 0xc1
+	OpZeroCoinSpend 		= 0xc2
+	OpSigmaMint     		= 0xc3
+	OpSigmaSpend    		= 0xc4
+	OpLelantusMint    	= 0xc5
+	OpLelantusJMint    	= 0xc6
+	OpLelantusJoinSplit = 0xc7

 	MainnetMagic wire.BitcoinNet = 0xe3d9fef1
 	TestnetMagic wire.BitcoinNet = 0xcffcbeea
@ -60,21 +63,21 @@ func init() {
 	RegtestParams.Net = RegtestMagic
 }

-// ZcoinParser handle
-type ZcoinParser struct {
+// FiroParser handle
+type FiroParser struct {
 	*btc.BitcoinParser
 }

-// NewZcoinParser returns new ZcoinParser instance
-func NewZcoinParser(params *chaincfg.Params, c *btc.Configuration) *ZcoinParser {
-	return &ZcoinParser{
+// NewFiroParser returns new FiroParser instance
+func NewFiroParser(params *chaincfg.Params, c *btc.Configuration) *FiroParser {
+	return &FiroParser{
 		BitcoinParser: btc.NewBitcoinParser(params, c),
 	}
 }

-// GetChainParams contains network parameters for the main Zcoin network,
-// the regression test Zcoin network, the test Zcoin network and
-// the simulation test Zcoin network, in this order
+// GetChainParams contains network parameters for the main Firo network,
+// the regression test Firo network, the test Firo network and
+// the simulation test Firo network, in this order
 func GetChainParams(chain string) *chaincfg.Params {
 	if !chaincfg.IsRegistered(&MainNetParams) {
 		err := chaincfg.Register(&MainNetParams)
@ -99,7 +102,7 @@ func GetChainParams(chain string) *chaincfg.Params {
 }

 // GetAddressesFromAddrDesc returns addresses for given address descriptor with flag if the addresses are searchable
-func (p *ZcoinParser) GetAddressesFromAddrDesc(addrDesc bchain.AddressDescriptor) ([]string, bool, error) {
+func (p *FiroParser) GetAddressesFromAddrDesc(addrDesc bchain.AddressDescriptor) ([]string, bool, error) {

 	if len(addrDesc) > 0 {
 		switch addrDesc[0] {
@ -111,6 +114,12 @@ func (p *ZcoinParser) GetAddressesFromAddrDesc(addrDesc bchain.AddressDescriptor
 			return []string{"Sigmamint"}, false, nil
 		case OpSigmaSpend:
 			return []string{"Sigmaspend"}, false, nil
+		case OpLelantusMint:
+			return []string{"LelantusMint"}, false, nil
+		case OpLelantusJMint:
+			return []string{"LelantusJMint"}, false, nil
+		case OpLelantusJoinSplit:
+			return []string{"LelantusJoinSplit"}, false, nil
 		}
 	}

@ -118,17 +127,17 @@ func (p *ZcoinParser) GetAddressesFromAddrDesc(addrDesc bchain.AddressDescriptor
 }

 // PackTx packs transaction to byte array using protobuf
-func (p *ZcoinParser) PackTx(tx *bchain.Tx, height uint32, blockTime int64) ([]byte, error) {
+func (p *FiroParser) 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 *ZcoinParser) UnpackTx(buf []byte) (*bchain.Tx, uint32, error) {
+func (p *FiroParser) UnpackTx(buf []byte) (*bchain.Tx, uint32, error) {
 	return p.BaseParser.UnpackTx(buf)
 }

-// TxFromZcoinMsgTx converts bitcoin wire Tx to bchain.Tx
-func (p *ZcoinParser) TxFromZcoinMsgTx(t *ZcoinMsgTx, parseAddresses bool) bchain.Tx {
+// TxFromFiroMsgTx converts bitcoin wire Tx to bchain.Tx
+func (p *FiroParser) TxFromFiroMsgTx(t *FiroMsgTx, parseAddresses bool) bchain.Tx {
 	btx := p.TxFromMsgTx(&t.MsgTx, parseAddresses)

 	// NOTE: wire.MsgTx.TxHash() doesn't include extra
@ -138,7 +147,7 @@ func (p *ZcoinParser) TxFromZcoinMsgTx(t *ZcoinMsgTx, parseAddresses bool) bchai
 }

 // ParseBlock parses raw block to our Block struct
-func (p *ZcoinParser) ParseBlock(b []byte) (*bchain.Block, error) {
+func (p *FiroParser) ParseBlock(b []byte) (*bchain.Block, error) {
 	reader := bytes.NewReader(b)

 	// parse standard block header first
@ -193,7 +202,7 @@ func (p *ZcoinParser) ParseBlock(b []byte) (*bchain.Block, error) {
 	txs := make([]bchain.Tx, ntx)

 	for i := uint64(0); i < ntx; i++ {
-		tx := ZcoinMsgTx{}
+		tx := FiroMsgTx{}

 		// read version and seek back
 		var version uint32 = 0
@ -215,13 +224,13 @@ func (p *ZcoinParser) ParseBlock(b []byte) (*bchain.Block, error) {
 			enc = wire.BaseEncoding
 		}

-		if err = tx.XzcDecode(reader, 0, enc); err != nil {
+		if err = tx.FiroDecode(reader, 0, enc); err != nil {
 			return nil, err
 		}

-		btx := p.TxFromZcoinMsgTx(&tx, false)
+		btx := p.TxFromFiroMsgTx(&tx, false)

-		if err = p.parseZcoinTx(&btx); err != nil {
+		if err = p.parseFiroTx(&btx); err != nil {
 			return nil, err
 		}

@ -238,7 +247,7 @@ func (p *ZcoinParser) ParseBlock(b []byte) (*bchain.Block, error) {
 }

 // ParseTxFromJson parses JSON message containing transaction and returns Tx struct
-func (p *ZcoinParser) ParseTxFromJson(msg json.RawMessage) (*bchain.Tx, error) {
+func (p *FiroParser) ParseTxFromJson(msg json.RawMessage) (*bchain.Tx, error) {
 	var tx bchain.Tx
 	err := json.Unmarshal(msg, &tx)
 	if err != nil {
@ -255,12 +264,12 @@ func (p *ZcoinParser) ParseTxFromJson(msg json.RawMessage) (*bchain.Tx, error) {
 		vout.JsonValue = ""
 	}

-	p.parseZcoinTx(&tx)
+	p.parseFiroTx(&tx)

 	return &tx, nil
 }

-func (p *ZcoinParser) parseZcoinTx(tx *bchain.Tx) error {
+func (p *FiroParser) parseFiroTx(tx *bchain.Tx) error {
 	for i := range tx.Vin {
 		vin := &tx.Vin[i]

--- a/bchain/coins/firo/firoparser_test.go
+++ b/bchain/coins/firo/firoparser_test.go
@ -1,6 +1,6 @@
 // +build unittest

-package xzc
+package firo

 import (
 	"bytes"
@ -365,32 +365,32 @@ func TestMain(m *testing.M) {
 func TestGetAddrDesc(t *testing.T) {
 	type args struct {
 		tx     bchain.Tx
-		parser *ZcoinParser
+		parser *FiroParser
 	}
 	tests := []struct {
 		name string
 		args args
 	}{
 		{
-			name: "xzc-1",
+			name: "firo-1",
 			args: args{
 				tx:     testTx1,
-				parser: NewZcoinParser(GetChainParams("main"), &btc.Configuration{}),
+				parser: NewFiroParser(GetChainParams("main"), &btc.Configuration{}),
 			},
 		},
 		// FIXME: work around handle zerocoin spend as coinbase
 		// {
-		// 	name: "xzc-2",
+		// 	name: "firo-2",
 		// 	args: args{
 		// 		tx:     testTx2,
-		// 		parser: NewZcoinParser(GetChainParams("main"), &btc.Configuration{}),
+		// 		parser: NewFiroParser(GetChainParams("main"), &btc.Configuration{}),
 		// 	},
 		// },
 		{
-			name: "xzc-3",
+			name: "firo-3",
 			args: args{
 				tx:     testTx3,
-				parser: NewZcoinParser(GetChainParams("main"), &btc.Configuration{}),
+				parser: NewFiroParser(GetChainParams("main"), &btc.Configuration{}),
 			},
 		},
 	}
@ -448,7 +448,7 @@ func TestGetAddrDescFromVoutForMint(t *testing.T) {
 			wantErr: false,
 		},
 	}
-	parser := NewZcoinParser(GetChainParams("main"), &btc.Configuration{})
+	parser := NewFiroParser(GetChainParams("main"), &btc.Configuration{})

 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
@ -498,7 +498,7 @@ func TestGetAddressesFromAddrDescForMint(t *testing.T) {
 			wantErr: false,
 		},
 	}
-	parser := NewZcoinParser(GetChainParams("main"), &btc.Configuration{})
+	parser := NewFiroParser(GetChainParams("main"), &btc.Configuration{})

 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
@ -523,7 +523,7 @@ func TestPackTx(t *testing.T) {
 		tx        bchain.Tx
 		height    uint32
 		blockTime int64
-		parser    *ZcoinParser
+		parser    *FiroParser
 	}
 	tests := []struct {
 		name    string
@ -532,68 +532,68 @@ func TestPackTx(t *testing.T) {
 		wantErr bool
 	}{
 		{
-			name: "xzc-1",
+			name: "firo-1",
 			args: args{
 				tx:        testTx1,
 				height:    100002,
 				blockTime: 1533980594,
-				parser:    NewZcoinParser(GetChainParams("main"), &btc.Configuration{}),
+				parser:    NewFiroParser(GetChainParams("main"), &btc.Configuration{}),
 			},
 			want:    testTxPacked1,
 			wantErr: false,
 		},
 		// FIXME: work around handle zerocoin spend as coinbase
 		// {
-		// 	name: "xzc-2",
+		// 	name: "firo-2",
 		// 	args: args{
 		// 		tx:        testTx2,
 		// 		height:    11002,
 		// 		blockTime: 1481277009,
-		// 		parser:    NewZcoinParser(GetChainParams("main"), &btc.Configuration{}),
+		// 		parser:    NewFiroParser(GetChainParams("main"), &btc.Configuration{}),
 		// 	},
 		// 	want:    testTxPacked2,
 		// 	wantErr: true,
 		// },
 		{
-			name: "xzc-3",
+			name: "firo-3",
 			args: args{
 				tx:        testTx3,
 				height:    126202,
 				blockTime: 1547091829,
-				parser:    NewZcoinParser(GetChainParams("main"), &btc.Configuration{}),
+				parser:    NewFiroParser(GetChainParams("main"), &btc.Configuration{}),
 			},
 			want:    testTxPacked3,
 			wantErr: false,
 		},
 		{
-			name: "xzc-coinbase",
+			name: "firo-coinbase",
 			args: args{
 				tx:        testTx4,
 				height:    100001,
 				blockTime: 1533977563,
-				parser:    NewZcoinParser(GetChainParams("main"), &btc.Configuration{}),
+				parser:    NewFiroParser(GetChainParams("main"), &btc.Configuration{}),
 			},
 			want:    testTxPacked4,
 			wantErr: false,
 		},
 		{
-			name: "xzc-quorum-commitment-tx",
+			name: "firo-quorum-commitment-tx",
 			args: args{
 				tx:        testTx5,
 				height:    5268,
 				blockTime: 1591752749,
-				parser:    NewZcoinParser(GetChainParams("test"), &btc.Configuration{}),
+				parser:    NewFiroParser(GetChainParams("test"), &btc.Configuration{}),
 			},
 			want:    testTxPacked5,
 			wantErr: false,
 		},
 		{
-			name: "xzc-special-coinbase-tx",
+			name: "firo-special-coinbase-tx",
 			args: args{
 				tx:        testTx6,
 				height:    5300,
 				blockTime: 1591762049,
-				parser:    NewZcoinParser(GetChainParams("test"), &btc.Configuration{}),
+				parser:    NewFiroParser(GetChainParams("test"), &btc.Configuration{}),
 			},
 			want:    testTxPacked6,
 			wantErr: false,
@ -619,7 +619,7 @@ func TestPackTx(t *testing.T) {
 func TestUnpackTx(t *testing.T) {
 	type args struct {
 		packedTx string
-		parser   *ZcoinParser
+		parser   *FiroParser
 	}
 	tests := []struct {
 		name    string
@ -629,10 +629,10 @@ func TestUnpackTx(t *testing.T) {
 		wantErr bool
 	}{
 		{
-			name: "xzc-1",
+			name: "firo-1",
 			args: args{
 				packedTx: testTxPacked1,
-				parser:   NewZcoinParser(GetChainParams("main"), &btc.Configuration{}),
+				parser:   NewFiroParser(GetChainParams("main"), &btc.Configuration{}),
 			},
 			want:    &testTx1,
 			want1:   100002,
@ -640,50 +640,50 @@ func TestUnpackTx(t *testing.T) {
 		},
 		// FIXME: work around handle zerocoin spend as coinbase
 		// {
-		// 	name: "xzc-2",
+		// 	name: "firo-2",
 		// 	args: args{
 		// 		packedTx: testTxPacked2,
-		// 		parser:   NewZcoinParser(GetChainParams("main"), &btc.Configuration{}),
+		// 		parser:   NewFiroParser(GetChainParams("main"), &btc.Configuration{}),
 		// 	},
 		// 	want:    &testTx2,
 		// 	want1:   11002,
 		// 	wantErr: true,
 		// },
 		{
-			name: "xzc-3",
+			name: "firo-3",
 			args: args{
 				packedTx: testTxPacked3,
-				parser:   NewZcoinParser(GetChainParams("main"), &btc.Configuration{}),
+				parser:   NewFiroParser(GetChainParams("main"), &btc.Configuration{}),
 			},
 			want:    &testTx3,
 			want1:   126202,
 			wantErr: false,
 		},
 		{
-			name: "xzc-coinbase",
+			name: "firo-coinbase",
 			args: args{
 				packedTx: testTxPacked4,
-				parser:   NewZcoinParser(GetChainParams("main"), &btc.Configuration{}),
+				parser:   NewFiroParser(GetChainParams("main"), &btc.Configuration{}),
 			},
 			want:    &testTx4,
 			want1:   100001,
 			wantErr: false,
 		},
 		{
-			name: "xzc-special-tx",
+			name: "firo-special-tx",
 			args: args{
 				packedTx: testTxPacked5,
-				parser:   NewZcoinParser(GetChainParams("test"), &btc.Configuration{}),
+				parser:   NewFiroParser(GetChainParams("test"), &btc.Configuration{}),
 			},
 			want:    &testTx5,
 			want1:   5268,
 			wantErr: false,
 		},
 		{
-			name: "xzc-special-coinbase-tx",
+			name: "firo-special-coinbase-tx",
 			args: args{
 				packedTx: testTxPacked6,
-				parser:   NewZcoinParser(GetChainParams("test"), &btc.Configuration{}),
+				parser:   NewFiroParser(GetChainParams("test"), &btc.Configuration{}),
 			},
 			want:    &testTx6,
 			want1:   5300,
@ -714,7 +714,7 @@ func TestUnpackTx(t *testing.T) {
 func TestParseBlock(t *testing.T) {
 	type args struct {
 		rawBlock string
-		parser   *ZcoinParser
+		parser   *FiroParser
 	}
 	tests := []struct {
 		name    string
@ -727,7 +727,7 @@ func TestParseBlock(t *testing.T) {
 			name: "normal-block",
 			args: args{
 				rawBlock: rawBlock1,
-				parser:   NewZcoinParser(GetChainParams("main"), &btc.Configuration{}),
+				parser:   NewFiroParser(GetChainParams("main"), &btc.Configuration{}),
 			},
 			want: &bchain.Block{
 				BlockHeader: bchain.BlockHeader{
@ -742,7 +742,7 @@ func TestParseBlock(t *testing.T) {
 			name: "spend-block",
 			args: args{
 				rawBlock: rawBlock2,
-				parser:   NewZcoinParser(GetChainParams("main"), &btc.Configuration{}),
+				parser:   NewFiroParser(GetChainParams("main"), &btc.Configuration{}),
 			},
 			want: &bchain.Block{
 				BlockHeader: bchain.BlockHeader{
@ -757,7 +757,7 @@ func TestParseBlock(t *testing.T) {
 			name: "special-tx-block",
 			args: args{
 				rawBlock: rawBlock3,
-				parser:   NewZcoinParser(GetChainParams("test"), &btc.Configuration{}),
+				parser:   NewFiroParser(GetChainParams("test"), &btc.Configuration{}),
 			},
 			want: &bchain.Block{
 				BlockHeader: bchain.BlockHeader{
@ -796,7 +796,7 @@ func TestDecodeTransaction(t *testing.T) {
 	type args struct {
 		enc            wire.MessageEncoding
 		rawTransaction string
-		parser         *ZcoinParser
+		parser         *FiroParser
 		privacyType    byte // 0 as non privacy
 	}
 	tests := []struct {
@ -810,16 +810,16 @@ func TestDecodeTransaction(t *testing.T) {
 			args: args{
 				enc:            wire.WitnessEncoding,
 				rawTransaction: rawTestTx1,
-				parser:         NewZcoinParser(GetChainParams("main"), &btc.Configuration{}),
+				parser:         NewFiroParser(GetChainParams("main"), &btc.Configuration{}),
 			},
 			want: testTx1,
 		},
 		{
-			name: "coinbase-zcoinspend",
+			name: "coinbase-firospend",
 			args: args{
 				enc:            wire.WitnessEncoding,
 				rawTransaction: rawTestTx2,
-				parser:         NewZcoinParser(GetChainParams("main"), &btc.Configuration{}),
+				parser:         NewFiroParser(GetChainParams("main"), &btc.Configuration{}),
 				privacyType:    OpSigmaSpend,
 			},
 			want: testTx2,
@ -829,7 +829,7 @@ func TestDecodeTransaction(t *testing.T) {
 			args: args{
 				enc:            wire.WitnessEncoding,
 				rawTransaction: rawTestTx3,
-				parser:         NewZcoinParser(GetChainParams("main"), &btc.Configuration{}),
+				parser:         NewFiroParser(GetChainParams("main"), &btc.Configuration{}),
 			},
 			want: testTx3,
 		},
@ -838,7 +838,7 @@ func TestDecodeTransaction(t *testing.T) {
 			args: args{
 				enc:            wire.WitnessEncoding,
 				rawTransaction: rawTestTx4,
-				parser:         NewZcoinParser(GetChainParams("main"), &btc.Configuration{}),
+				parser:         NewFiroParser(GetChainParams("main"), &btc.Configuration{}),
 			},
 			want: testTx4,
 		},
@ -847,7 +847,7 @@ func TestDecodeTransaction(t *testing.T) {
 			args: args{
 				enc:            wire.BaseEncoding,
 				rawTransaction: rawTestTx5,
-				parser:         NewZcoinParser(GetChainParams("main"), &btc.Configuration{}),
+				parser:         NewFiroParser(GetChainParams("main"), &btc.Configuration{}),
 			},
 			want: testTx5,
 		},
@ -856,7 +856,7 @@ func TestDecodeTransaction(t *testing.T) {
 			args: args{
 				enc:            wire.WitnessEncoding,
 				rawTransaction: rawTestTx5,
-				parser:         NewZcoinParser(GetChainParams("main"), &btc.Configuration{}),
+				parser:         NewFiroParser(GetChainParams("main"), &btc.Configuration{}),
 			},
 			wantErr: true,
 		},
@ -865,7 +865,7 @@ func TestDecodeTransaction(t *testing.T) {
 			args: args{
 				enc:            wire.WitnessEncoding,
 				rawTransaction: rawTestTx6,
-				parser:         NewZcoinParser(GetChainParams("test"), &btc.Configuration{}),
+				parser:         NewFiroParser(GetChainParams("test"), &btc.Configuration{}),
 			},
 			want: testTx6,
 		},
@ -876,8 +876,8 @@ func TestDecodeTransaction(t *testing.T) {
 			b, _ := hex.DecodeString(tt.args.rawTransaction)
 			r := bytes.NewReader(b)

-			msg := ZcoinMsgTx{}
-			err := msg.XzcDecode(r, 0, tt.args.enc)
+			msg := FiroMsgTx{}
+			err := msg.FiroDecode(r, 0, tt.args.enc)

 			if tt.wantErr {
 				if err == nil {
@ -891,8 +891,8 @@ func TestDecodeTransaction(t *testing.T) {
 				t.Fatal(err)
 			}

-			got := tt.args.parser.TxFromZcoinMsgTx(&msg, true)
-			if pErr := tt.args.parser.parseZcoinTx(&got); pErr != nil {
+			got := tt.args.parser.TxFromFiroMsgTx(&msg, true)
+			if pErr := tt.args.parser.parseFiroTx(&got); pErr != nil {
 				t.Fatal(pErr)
 			}

--- a/bchain/coins/firo/firorpc.go
+++ b/bchain/coins/firo/firorpc.go
@ -1,4 +1,4 @@
-package xzc
+package firo

 import (
 	"encoding/hex"
@ -10,19 +10,19 @@ import (
 	"github.com/trezor/blockbook/bchain/coins/btc"
 )

-type ZcoinRPC struct {
+type FiroRPC struct {
 	*btc.BitcoinRPC
 }

-func NewZcoinRPC(config json.RawMessage, pushHandler func(bchain.NotificationType)) (bchain.BlockChain, error) {
+func NewFiroRPC(config json.RawMessage, pushHandler func(bchain.NotificationType)) (bchain.BlockChain, error) {
 	// init base implementation
 	bc, err := btc.NewBitcoinRPC(config, pushHandler)
 	if err != nil {
 		return nil, err
 	}

-	// init zcoin implementation
-	zc := &ZcoinRPC{
+	// init firo implementation
+	zc := &FiroRPC{
 		BitcoinRPC: bc.(*btc.BitcoinRPC),
 	}

@ -35,7 +35,7 @@ func NewZcoinRPC(config json.RawMessage, pushHandler func(bchain.NotificationTyp
 	return zc, nil
 }

-func (zc *ZcoinRPC) Initialize() error {
+func (zc *FiroRPC) Initialize() error {
 	ci, err := zc.GetChainInfo()
 	if err != nil {
 		return err
@ -45,7 +45,7 @@ func (zc *ZcoinRPC) Initialize() error {
 	params := GetChainParams(chainName)

 	// always create parser
-	zc.Parser = NewZcoinParser(params, zc.ChainConfig)
+	zc.Parser = NewFiroParser(params, zc.ChainConfig)

 	// parameters for getInfo request
 	if params.Net == MainnetMagic {
@ -61,7 +61,7 @@ func (zc *ZcoinRPC) Initialize() error {
 	return nil
 }

-func (zc *ZcoinRPC) GetBlock(hash string, height uint32) (*bchain.Block, error) {
+func (zc *FiroRPC) GetBlock(hash string, height uint32) (*bchain.Block, error) {
 	var err error

 	if hash == "" {
@ -96,7 +96,7 @@ func (zc *ZcoinRPC) GetBlock(hash string, height uint32) (*bchain.Block, error)
 	return block, nil
 }

-func (zc *ZcoinRPC) GetBlockInfo(hash string) (*bchain.BlockInfo, error) {
+func (zc *FiroRPC) GetBlockInfo(hash string) (*bchain.BlockInfo, error) {
 	glog.V(1).Info("rpc: getblock (verbosity=true) ", hash)

 	res := btc.ResGetBlockInfo{}
@ -117,7 +117,7 @@ func (zc *ZcoinRPC) GetBlockInfo(hash string) (*bchain.BlockInfo, error) {
 	return &res.Result, nil
 }

-func (zc *ZcoinRPC) GetBlockWithoutHeader(hash string, height uint32) (*bchain.Block, error) {
+func (zc *FiroRPC) GetBlockWithoutHeader(hash string, height uint32) (*bchain.Block, error) {
 	data, err := zc.GetBlockRaw(hash)
 	if err != nil {
 		return nil, err
@ -134,7 +134,7 @@ func (zc *ZcoinRPC) GetBlockWithoutHeader(hash string, height uint32) (*bchain.B
 	return block, nil
 }

-func (zc *ZcoinRPC) GetBlockRaw(hash string) ([]byte, error) {
+func (zc *FiroRPC) GetBlockRaw(hash string) ([]byte, error) {
 	glog.V(1).Info("rpc: getblock (verbosity=false) ", hash)

 	res := btc.ResGetBlockRaw{}
@ -155,7 +155,7 @@ func (zc *ZcoinRPC) GetBlockRaw(hash string) ([]byte, error) {
 	return hex.DecodeString(res.Result)
 }

-func (zc *ZcoinRPC) GetTransactionForMempool(txid string) (*bchain.Tx, error) {
+func (zc *FiroRPC) GetTransactionForMempool(txid string) (*bchain.Tx, error) {
 	glog.V(1).Info("rpc: getrawtransaction nonverbose ", txid)

 	res := btc.ResGetRawTransactionNonverbose{}
@ -183,7 +183,7 @@ func (zc *ZcoinRPC) GetTransactionForMempool(txid string) (*bchain.Tx, error) {
 	return tx, nil
 }

-func (zc *ZcoinRPC) GetTransaction(txid string) (*bchain.Tx, error) {
+func (zc *FiroRPC) GetTransaction(txid string) (*bchain.Tx, error) {
 	r, err := zc.getRawTransaction(txid)
 	if err != nil {
 		return nil, err
@ -198,14 +198,14 @@ func (zc *ZcoinRPC) GetTransaction(txid string) (*bchain.Tx, error) {
 	return tx, nil
 }

-func (zc *ZcoinRPC) GetTransactionSpecific(tx *bchain.Tx) (json.RawMessage, error) {
+func (zc *FiroRPC) GetTransactionSpecific(tx *bchain.Tx) (json.RawMessage, error) {
 	if csd, ok := tx.CoinSpecificData.(json.RawMessage); ok {
 		return csd, nil
 	}
 	return zc.getRawTransaction(tx.Txid)
 }

-func (zc *ZcoinRPC) getRawTransaction(txid string) (json.RawMessage, error) {
+func (zc *FiroRPC) getRawTransaction(txid string) (json.RawMessage, error) {
 	glog.V(1).Info("rpc: getrawtransaction ", txid)

 	res := btc.ResGetRawTransaction{}
--- a/bchain/coins/firo/testdata/packedtxs.hex
+++ b/bchain/coins/firo/testdata/packedtxs.hex
--- a/bchain/coins/firo/testdata/rawblock.hex
+++ b/bchain/coins/firo/testdata/rawblock.hex
--- a/bchain/coins/firo/testdata/rawspend.hex
+++ b/bchain/coins/firo/testdata/rawspend.hex
--- a/bchain/coins/firo/testdata/spendtx.json
+++ b/bchain/coins/firo/testdata/spendtx.json
--- a/bchain/coins/firo/testdata/txs.hex
+++ b/bchain/coins/firo/testdata/txs.hex
--- a/bchain/coins/trezarcoin/trezarcoinparser.go
+++ b/bchain/coins/trezarcoin/trezarcoinparser.go
@ -0,0 +1,63 @@
+package trezarcoin
+
+import (
+	"github.com/martinboehm/btcd/wire"
+	"github.com/martinboehm/btcutil/chaincfg"
+	"github.com/trezor/blockbook/bchain"
+	"github.com/trezor/blockbook/bchain/coins/btc"
+)
+
+// magic numbers
+const (
+	MainnetMagic wire.BitcoinNet = 0xfddbefe4
+)
+
+// chain parameters
+var (
+	MainNetParams chaincfg.Params
+)
+
+func init() {
+	MainNetParams = chaincfg.MainNetParams
+	MainNetParams.Net = MainnetMagic
+	MainNetParams.PubKeyHashAddrID = []byte{66}
+	MainNetParams.ScriptHashAddrID = []byte{8}
+}
+
+// TrezarcoinParser handle
+type TrezarcoinParser struct {
+	*btc.BitcoinParser
+	baseparser *bchain.BaseParser
+}
+
+// NewTrezarcoinParser returns new TrezarcoinParser instance
+func NewTrezarcoinParser(params *chaincfg.Params, c *btc.Configuration) *TrezarcoinParser {
+	return &TrezarcoinParser{
+		BitcoinParser: btc.NewBitcoinParser(params, c),
+		baseparser:    &bchain.BaseParser{},
+	}
+}
+
+// GetChainParams returns network parameters
+func GetChainParams(chain string) *chaincfg.Params {
+	if !chaincfg.IsRegistered(&MainNetParams) {
+		err := chaincfg.Register(&MainNetParams)
+		if err != nil {
+			panic(err)
+		}
+	}
+	switch chain {
+	default:
+		return &MainNetParams
+	}
+}
+
+// PackTx packs transaction to byte array using protobuf
+func (p *TrezarcoinParser) 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 *TrezarcoinParser) UnpackTx(buf []byte) (*bchain.Tx, uint32, error) {
+	return p.baseparser.UnpackTx(buf)
+}
--- a/bchain/coins/trezarcoin/trezarcoinparser_test.go
+++ b/bchain/coins/trezarcoin/trezarcoinparser_test.go
@ -0,0 +1,71 @@
+// +build unittest
+
+package trezarcoin
+
+import (
+	"encoding/hex"
+	"os"
+	"reflect"
+	"testing"
+
+	"github.com/martinboehm/btcutil/chaincfg"
+	"github.com/trezor/blockbook/bchain/coins/btc"
+)
+
+func TestMain(m *testing.M) {
+	c := m.Run()
+	chaincfg.ResetParams()
+	os.Exit(c)
+}
+
+func Test_GetAddrDescFromAddress_Mainnet(t *testing.T) {
+	type args struct {
+		address string
+	}
+	tests := []struct {
+		name    string
+		args    args
+		want    string
+		wantErr bool
+	}{
+		{
+			name:    "pubkeyhash1",
+			args:    args{address: "TovkYkEtp73t4KYEJxMxXhBMKVdDPmr7Hv"},
+			want:    "76a914a05ddd8e3268846a3e7a4ddf505adb942cc6557488ac",
+			wantErr: false,
+		},
+		{
+			name:    "pubkeyhash2",
+			args:    args{address: "TuEoL199onxdg7z69D12AmhMnEEAH742Ro"},
+			want:    "76a914daa04d741763566e77a9df316f6cf755e8e77d3088ac",
+			wantErr: false,
+		},
+		{
+			name:    "scripthash1",
+			args:    args{address: "4Nx2k3S57z4PbUoP9M6BpQBCpizn8critB"},
+			want:    "a9146568dc26eb0054c19042114cae9cff56e816a06c87",
+			wantErr: false,
+		},
+		{
+			name:    "scripthash2",
+			args:    args{address: "4XvMi1G8rXtgZnz5G8S9yA3QzTtaC8TLrY"},
+			want:    "a914c7d0fdbdc654f7154b014f83b9d607f3adfbf4f887",
+			wantErr: false,
+		},
+	}
+	parser := NewTrezarcoinParser(GetChainParams("main"), &btc.Configuration{})
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			got, err := parser.GetAddrDescFromAddress(tt.args.address)
+			if (err != nil) != tt.wantErr {
+				t.Errorf("GetAddrDescFromAddress() error = %v, wantErr %v", err, tt.wantErr)
+				return
+			}
+			h := hex.EncodeToString(got)
+			if !reflect.DeepEqual(h, tt.want) {
+				t.Errorf("GetAddrDescFromAddress() = %v, want %v", h, tt.want)
+			}
+		})
+	}
+}
--- a/bchain/coins/trezarcoin/trezarcoinrpc.go
+++ b/bchain/coins/trezarcoin/trezarcoinrpc.go
@ -0,0 +1,114 @@
+package trezarcoin
+
+import (
+	"encoding/json"
+
+	"github.com/golang/glog"
+	"github.com/juju/errors"
+	"github.com/trezor/blockbook/bchain"
+	"github.com/trezor/blockbook/bchain/coins/btc"
+)
+
+// TrezarcoinRPC is an interface to JSON-RPC bitcoind service.
+type TrezarcoinRPC struct {
+	*btc.BitcoinRPC
+}
+
+// NewTrezarcoinRPC returns new TrezarcoinRPC instance.
+func NewTrezarcoinRPC(config json.RawMessage, pushHandler func(bchain.NotificationType)) (bchain.BlockChain, error) {
+	b, err := btc.NewBitcoinRPC(config, pushHandler)
+	if err != nil {
+		return nil, err
+	}
+
+	s := &TrezarcoinRPC{
+		b.(*btc.BitcoinRPC),
+	}
+	s.RPCMarshaler = btc.JSONMarshalerV1{}
+	s.ChainConfig.SupportsEstimateFee = false
+
+	return s, nil
+}
+
+// Initialize initializes TrezarcoinRPC instance.
+func (b *TrezarcoinRPC) Initialize() error {
+	ci, err := b.GetChainInfo()
+	if err != nil {
+		return err
+	}
+	chainName := ci.Chain
+
+	glog.Info("Chain name ", chainName)
+	params := GetChainParams(chainName)
+
+	// always create parser
+	b.Parser = NewTrezarcoinParser(params, b.ChainConfig)
+
+	// parameters for getInfo request
+	b.Testnet = false
+	b.Network = "livenet"
+
+	glog.Info("rpc: block chain ", params.Name)
+
+	return nil
+}
+
+// GetBlock returns block with given hash.
+func (f *TrezarcoinRPC) GetBlock(hash string, height uint32) (*bchain.Block, error) {
+	var err error
+	if hash == "" && height > 0 {
+		hash, err = f.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 = f.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 := f.GetTransaction(txid)
+		if err != nil {
+			if err == bchain.ErrTxNotFound {
+				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
+}
+
+// GetTransactionForMempool returns a transaction by the transaction ID.
+// It could be optimized for mempool, i.e. without block time and confirmations
+func (f *TrezarcoinRPC) GetTransactionForMempool(txid string) (*bchain.Tx, error) {
+	return f.GetTransaction(txid)
+}
+
+// GetMempoolEntry returns mempool data for given transaction
+func (f *TrezarcoinRPC) GetMempoolEntry(txid string) (*bchain.MempoolEntry, error) {
+	return nil, errors.New("GetMempoolEntry: not implemented")
+}
+
+func isErrBlockNotFound(err *bchain.RPCError) bool {
+	return err.Message == "Block not found" ||
+		err.Message == "Block height out of range"
+}
--- a/build/docker/bin/Dockerfile
+++ b/build/docker/bin/Dockerfile
@ -9,12 +9,12 @@ RUN apt-get update && \
                       liblz4-dev graphviz && \
    apt-get clean

-ENV GOLANG_VERSION=go1.14.2.linux-amd64
-ENV ROCKSDB_VERSION=v5.18.3
+ENV GOLANG_VERSION=go1.15.5.linux-amd64
+ENV ROCKSDB_VERSION=v6.13.3
 ENV GOPATH=/go
 ENV PATH=$PATH:$GOPATH/bin
 ENV CGO_CFLAGS="-I/opt/rocksdb/include"
-ENV CGO_LDFLAGS="-L/opt/rocksdb -lrocksdb -lstdc++ -lm -lz -lbz2 -lsnappy -llz4"
+ENV CGO_LDFLAGS="-L/opt/rocksdb -ldl -lrocksdb -lstdc++ -lm -lz -lbz2 -lsnappy -llz4"

 RUN mkdir /build

@ -35,7 +35,7 @@ RUN strip /opt/rocksdb/ldb /opt/rocksdb/sst_dump && \
 # install build tools
 RUN go get github.com/gobuffalo/packr/...

-# download pre-loaded depencencies
+# pre-load depencencies
 RUN \
    cleanup() { rm -rf $GOPATH/src/github.com/trezor ; } && \
    trap cleanup EXIT && \
@ -43,8 +43,7 @@ RUN \
    cd $GOPATH/src/github.com/trezor && \
    git clone https://github.com/trezor/blockbook.git && \
    cd blockbook && \
-    env GO111MODULE=on go mod vendor && \
-    cp -r vendor /build/vendor
+    go mod download

 ADD Makefile /build/Makefile

--- a/build/docker/bin/Makefile
+++ b/build/docker/bin/Makefile
@ -1,5 +1,4 @@
 SHELL = /bin/bash
-UPDATE_VENDOR ?= 1
 VERSION ?= devel
 GITCOMMIT = $(shell cd /src && git describe --always --dirty)
 BUILDTIME = $(shell date --iso-8601=seconds)
@ -38,15 +37,8 @@ prepare-sources:
 	rm -rf $(BLOCKBOOK_SRC)
 	mkdir -p $(BLOCKBOOK_BASE)
 	cp -r /src $(BLOCKBOOK_SRC)
-	$(MAKE) prepare-vendor
-
-prepare-vendor:
-	@ if [ "$(UPDATE_VENDOR)" -eq 1 ]; then \
-		echo "Updating vendor"; \
-		cd $(BLOCKBOOK_SRC) && rm -rf vendor* && cp -r /build/vendor . && env GO111MODULE=on go mod vendor ; \
-	else \
-		echo "Update of vendor not demanded, keeping version from src" ; \
-	fi
+	cd $(BLOCKBOOK_SRC) && go mod download
+	sed -i 's/maxRequestContentLength\ =\ 1024\ \*\ 1024\ \*\ 5/maxRequestContentLength = 1024 * 1024 * 20/g' $(GOPATH)/pkg/mod/github.com/ethereum/go-ethereum*/rpc/http.go

 generate-data:
 	cd $(BLOCKBOOK_SRC) && packr clean && packr
--- a/build/templates/backend/config/bitcoin-signet.conf
+++ b/build/templates/backend/config/bitcoin-signet.conf
@ -0,0 +1,33 @@
+{{define "main" -}}
+daemon=1
+server=1
+{{if .Backend.Mainnet}}mainnet=1{{else}}signet=1{{end}}
+nolisten=1
+txindex=1
+disablewallet=1
+
+zmqpubhashtx={{template "IPC.MessageQueueBindingTemplate" .}}
+zmqpubhashblock={{template "IPC.MessageQueueBindingTemplate" .}}
+
+rpcworkqueue=1100
+maxmempool=2000
+dbcache=1000
+
+{{- if .Backend.AdditionalParams}}
+# generated from additional_params
+{{- range $name, $value := .Backend.AdditionalParams}}
+{{- if eq $name "addnode"}}
+{{- range $index, $node := $value}}
+addnode={{$node}}
+{{- end}}
+{{- else}}
+{{$name}}={{$value}}
+{{- end}}
+{{- end}}
+{{- end}}
+
+{{if .Backend.Mainnet}}[main]{{else}}[signet]{{end}}
+{{generateRPCAuth .IPC.RPCUser .IPC.RPCPass -}}
+rpcport={{.Ports.BackendRPC}}
+
+{{end}}
--- a/configs/coins/bgold_testnet.json
+++ b/configs/coins/bgold_testnet.json
@ -0,0 +1,84 @@
+{
+    "coin": {
+      "name": "Bgold-Testnet",
+      "shortcut": "TBTG",
+      "label": "Bitcoin Gold Testnet",
+      "alias": "bgold_testnet"
+    },
+    "ports": {
+      "backend_rpc": 18035,
+      "backend_message_queue": 48335,
+      "blockbook_internal": 19035,
+      "blockbook_public": 19135
+    },
+    "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-bgold-testnet",
+      "package_revision": "satoshilabs-1",
+      "system_user": "bgold",
+      "version": "0.17.3",
+      "binary_url": "https://github.com/BTCGPU/BTCGPU/releases/download/v0.17.3/bitcoin-gold-0.17.3-x86_64-linux-gnu.tar.gz",
+      "verification_type": "gpg-sha256",
+      "verification_source": "https://github.com/BTCGPU/BTCGPU/releases/download/v0.17.3/SHA256SUMS.asc",
+      "extract_command": "tar -C backend --strip 1 -xf",
+      "exclude_files": [
+        "bin/bitcoin-qt"
+      ],
+      "exec_command_template": "{{.Env.BackendInstallPath}}/{{.Coin.Alias}}/bin/bgoldd -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/testnet/*.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": {
+        "addnode": [
+          "136.243.230.235:18338",
+          "167.179.114.118:18338",
+          "51.15.140.154:18338",
+          "62.141.35.88:18338",
+          "71.172.96.60:18338",
+          "8.39.234.187:18338"
+        ],
+        "maxconnections": 250,
+        "mempoolexpiry": 72,
+        "timeout": 768
+      }
+    },
+    "blockbook": {
+      "package_name": "blockbook-bgold-testnet",
+      "system_user": "blockbook-bgold",
+      "internal_binding_template": ":{{.Ports.BlockbookInternal}}",
+      "public_binding_template": ":{{.Ports.BlockbookPublic}}",
+      "explorer_url": "",
+      "additional_params": "",
+      "block_chain": {
+        "parse": true,
+        "subversion": "/Bitcoin Gold:0.17.3/",
+        "mempool_workers": 8,
+        "mempool_sub_workers": 2,
+        "block_addresses_to_keep": 300,
+        "xpub_magic": 70617039,
+        "xpub_magic_segwit_p2sh": 71979618,
+        "xpub_magic_segwit_native": 73342198,
+        "slip44": 156,
+        "additional_params": {
+          "fiat_rates": "coingecko",
+          "fiat_rates_params": "{\"url\": \"https://api.coingecko.com/api/v3\", \"coin\": \"bitcoin-gold\", \"periodSeconds\": 60}"
+        }
+      }
+    },
+    "meta": {
+      "package_maintainer": "Martin Kuvandzhiev",
+      "package_maintainer_email": "martin@bitcoingold.org"
+    }
+  }
+  
--- a/configs/coins/bitcoin_signet.json
+++ b/configs/coins/bitcoin_signet.json
@ -0,0 +1,67 @@
+{
+  "coin": {
+    "name": "Signet",
+    "shortcut": "sBTC",
+    "label": "Bitcoin Signet",
+    "alias": "bitcoin_signet"
+  },
+  "ports": {
+    "backend_rpc": 18020,
+    "backend_message_queue": 48320,
+    "blockbook_internal": 19020,
+    "blockbook_public": 19120
+  },
+  "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-bitcoin-signet",
+    "package_revision": "satoshilabs-1",
+    "system_user": "bitcoin",
+    "version": "0.21.0rc2",
+    "binary_url": "https://storage.tamami-foundation.org/bitcoin-a35b948836db20fab9b48d3b77cf9f23ffee109a-x86_64-linux-gnu.tar.gz",
+    "verification_type": "sha256",
+    "verification_source": "b7cbeafd6a20c53f593a763cde94115ff39ae63e14049037bffbe4656eeebdc4",
+    "extract_command": "tar -C backend --strip 1 -xf",
+    "exclude_files": [],
+    "exec_command_template": "{{.Env.BackendInstallPath}}/{{.Coin.Alias}}/bin/bitcoind -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/signet/*.log",
+    "postinst_script_template": "",
+    "service_type": "forking",
+    "service_additional_params_template": "",
+    "protect_memory": true,
+    "mainnet": false,
+    "server_config_file": "bitcoin-signet.conf",
+    "client_config_file": "bitcoin_client.conf",
+    "additional_params": {
+      "deprecatedrpc": "estimatefee"
+    }
+  },
+  "blockbook": {
+    "package_name": "blockbook-bitcoin-signet",
+    "system_user": "blockbook-bitcoin",
+    "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,
+      "xpub_magic": 70617039,
+      "xpub_magic_segwit_p2sh": 71979618,
+      "xpub_magic_segwit_native": 73342198,
+      "slip44": 1,
+      "additional_params": {}
+    }
+  },
+  "meta": {
+    "package_maintainer": "wakiyamap",
+    "package_maintainer_email": "wakiyamap@gmail.com"
+  }
+}
--- a/configs/coins/ethereum-classic.json
+++ b/configs/coins/ethereum-classic.json
@ -19,10 +19,10 @@
    "package_name": "backend-ethereum-classic",
    "package_revision": "satoshilabs-1",
    "system_user": "ethereum-classic",
-    "version": "1.11.18",
-    "binary_url": "https://github.com/etclabscore/core-geth/releases/download/v1.11.18/core-geth-linux-v1.11.18.zip",
+    "version": "1.11.20",
+    "binary_url": "https://github.com/etclabscore/core-geth/releases/download/v1.11.20/core-geth-linux-v1.11.20.zip",
    "verification_type": "sha256",
-    "verification_source": "ee1533e546e9520eeb327be30978b55449cce09341c3d242f4104ae41b2c9c2c",
+    "verification_source": "47352c287af52a3b8b7d0f668178620dbb3a8e13935423bba8249eccbc76861a",
    "extract_command": "unzip -d backend",
    "exclude_files": [],
    "exec_command_template": "/bin/sh -c '{{.Env.BackendInstallPath}}/{{.Coin.Alias}}/geth --classic --ipcdisable --cache 1024 --nat none --datadir {{.Env.BackendDataPath}}/{{.Coin.Alias}}/backend --port 38337 --ws --wsaddr 127.0.0.1 --wsport {{.Ports.BackendRPC}} --wsorigins \"*\" --rpc --rpcport 8137 -rpcaddr 127.0.0.1 --rpccorsdomain \"*\" 2>>{{.Env.BackendDataPath}}/{{.Coin.Alias}}/backend/{{.Coin.Alias}}.log'",
--- a/configs/coins/firo.json
+++ b/configs/coins/firo.json
@ -0,0 +1,125 @@
+{
+  "coin": {
+    "name": "Firo",
+    "shortcut": "FIRO",
+    "label": "Firo",
+    "alias": "firo"
+  },
+  "ports": {
+    "backend_rpc": 8050,
+    "backend_message_queue": 38350,
+    "blockbook_internal": 9050,
+    "blockbook_public": 9150
+  },
+  "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-firo",
+    "package_revision": "satoshilabs-1",
+    "system_user": "firo",
+    "version": "0.14.1.2",
+    "binary_url": "https://github.com/firoorg/firo/releases/download/v0.14.1.2/firo-0.14.1.2-linux64.tar.gz",
+    "verification_type": "sha256",
+    "verification_source": "f2f3e92d891cfcea3b9232bdaf104fd1c7b6d21997a4e2c1297c7e8130c2e3e3",
+    "extract_command": "tar -C backend --strip 1 -xf",
+    "exclude_files": [
+      "bin/tor",
+      "bin/tor-gencert",
+      "bin/torify",
+      "bin/tor-print-ed-signing-cert",
+      "bin/tor-resolve",
+      "bin/firo-qt",
+      "bin/firo-tx",
+      "etc/tor/torrc.sample",
+      "home/ubuntu/build/firo/depends/x86_64-linux-gnu/cmake/relic-config.cmake",
+      "home/ubuntu/build/firo/depends/x86_64-linux-gnu/include/chiabls/aggregationinfo.hpp",
+      "home/ubuntu/build/firo/depends/x86_64-linux-gnu/include/chiabls/bls.hpp",
+      "home/ubuntu/build/firo/depends/x86_64-linux-gnu/include/chiabls/chaincode.hpp",
+      "home/ubuntu/build/firo/depends/x86_64-linux-gnu/include/chiabls/extendedprivatekey.hpp",
+      "home/ubuntu/build/firo/depends/x86_64-linux-gnu/include/chiabls/extendedpublickey.hpp",
+      "home/ubuntu/build/firo/depends/x86_64-linux-gnu/include/chiabls/privatekey.hpp",
+      "home/ubuntu/build/firo/depends/x86_64-linux-gnu/include/chiabls/publickey.hpp",
+      "home/ubuntu/build/firo/depends/x86_64-linux-gnu/include/chiabls/signature.hpp",
+      "home/ubuntu/build/firo/depends/x86_64-linux-gnu/include/chiabls/test-utils.hpp",
+      "home/ubuntu/build/firo/depends/x86_64-linux-gnu/include/chiabls/util.hpp",
+      "home/ubuntu/build/firo/depends/x86_64-linux-gnu/include/low/relic_bn_low.h",
+      "home/ubuntu/build/firo/depends/x86_64-linux-gnu/include/low/relic_dv_low.h",
+      "home/ubuntu/build/firo/depends/x86_64-linux-gnu/include/low/relic_fb_low.h",
+      "home/ubuntu/build/firo/depends/x86_64-linux-gnu/include/low/relic_fp_low.h",
+      "home/ubuntu/build/firo/depends/x86_64-linux-gnu/include/low/relic_fpx_low.h",
+      "home/ubuntu/build/firo/depends/x86_64-linux-gnu/include/relic_arch.h",
+      "home/ubuntu/build/firo/depends/x86_64-linux-gnu/include/relic_bc.h",
+      "home/ubuntu/build/firo/depends/x86_64-linux-gnu/include/relic_bench.h",
+      "home/ubuntu/build/firo/depends/x86_64-linux-gnu/include/relic_bn.h",
+      "home/ubuntu/build/firo/depends/x86_64-linux-gnu/include/relic_conf.h",
+      "home/ubuntu/build/firo/depends/x86_64-linux-gnu/include/relic_core.h",
+      "home/ubuntu/build/firo/depends/x86_64-linux-gnu/include/relic_cp.h",
+      "home/ubuntu/build/firo/depends/x86_64-linux-gnu/include/relic_dv.h",
+      "home/ubuntu/build/firo/depends/x86_64-linux-gnu/include/relic_eb.h",
+      "home/ubuntu/build/firo/depends/x86_64-linux-gnu/include/relic_ec.h",
+      "home/ubuntu/build/firo/depends/x86_64-linux-gnu/include/relic_ed.h",
+      "home/ubuntu/build/firo/depends/x86_64-linux-gnu/include/relic_ep.h",
+      "home/ubuntu/build/firo/depends/x86_64-linux-gnu/include/relic_epx.h",
+      "home/ubuntu/build/firo/depends/x86_64-linux-gnu/include/relic_err.h",
+      "home/ubuntu/build/firo/depends/x86_64-linux-gnu/include/relic_fb.h",
+      "home/ubuntu/build/firo/depends/x86_64-linux-gnu/include/relic_fbx.h",
+      "home/ubuntu/build/firo/depends/x86_64-linux-gnu/include/relic_fp.h",
+      "home/ubuntu/build/firo/depends/x86_64-linux-gnu/include/relic_fpx.h",
+      "home/ubuntu/build/firo/depends/x86_64-linux-gnu/include/relic.h",
+      "home/ubuntu/build/firo/depends/x86_64-linux-gnu/include/relic_label.h",
+      "home/ubuntu/build/firo/depends/x86_64-linux-gnu/include/relic_md.h",
+      "home/ubuntu/build/firo/depends/x86_64-linux-gnu/include/relic_pc.h",
+      "home/ubuntu/build/firo/depends/x86_64-linux-gnu/include/relic_pool.h",
+      "home/ubuntu/build/firo/depends/x86_64-linux-gnu/include/relic_pp.h",
+      "home/ubuntu/build/firo/depends/x86_64-linux-gnu/include/relic_rand.h",
+      "home/ubuntu/build/firo/depends/x86_64-linux-gnu/include/relic_test.h",
+      "home/ubuntu/build/firo/depends/x86_64-linux-gnu/include/relic_trace.h",
+      "home/ubuntu/build/firo/depends/x86_64-linux-gnu/include/relic_types.h",
+      "home/ubuntu/build/firo/depends/x86_64-linux-gnu/include/relic_util.h",
+      "include/bitcoinconsensus.h",
+      "lib/libbitcoinconsensus.so",
+      "lib/libbitcoinconsensus.so.0",
+      "lib/libbitcoinconsensus.so.0.0.0",
+      "README.md",
+      "share/tor/geoip",
+      "share/tor/geoip6"
+    ],
+    "exec_command_template": "{{.Env.BackendInstallPath}}/{{.Coin.Alias}}/bin/firod -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"
+    }
+  },
+  "blockbook": {
+    "package_name": "blockbook-firo",
+    "system_user": "blockbook-firo",
+    "internal_binding_template": ":{{.Ports.BlockbookInternal}}",
+    "public_binding_template": ":{{.Ports.BlockbookPublic}}",
+    "explorer_url": "",
+    "additional_params": "",
+    "block_chain": {
+      "mempool_workers": 8,
+      "mempool_sub_workers": 2,
+      "block_addresses_to_keep": 300,
+      "xpub_magic": 76067358,
+      "slip44": 136,
+      "additional_params": {}
+    }
+  },
+  "meta": {
+    "package_maintainer": "Putta Khunchalee",
+    "package_maintainer_email": "putta@zcoin.io"
+  }
+}
--- a/configs/coins/groestlcoin.json
+++ b/configs/coins/groestlcoin.json
@ -22,10 +22,10 @@
    "package_name": "backend-groestlcoin",
    "package_revision": "satoshilabs-1",
    "system_user": "groestlcoin",
-    "version": "2.20.1",
-    "binary_url": "https://github.com/Groestlcoin/groestlcoin/releases/download/v2.20.1/groestlcoin-2.20.1-x86_64-linux-gnu.tar.gz",
+    "version": "2.21.0",
+    "binary_url": "https://github.com/Groestlcoin/groestlcoin/releases/download/v2.21.0/groestlcoin-2.21.0-x86_64-linux-gnu.tar.gz",
    "verification_type": "gpg-sha256",
-    "verification_source": "https://github.com/Groestlcoin/groestlcoin/releases/download/v2.20.1/SHA256SUMS.asc",
+    "verification_source": "https://github.com/Groestlcoin/groestlcoin/releases/download/v2.21.0/SHA256SUMS.asc",
    "extract_command": "tar -C backend --strip 1 -xf",
    "exclude_files": [
      "bin/groestlcoin-qt"
--- a/configs/coins/groestlcoin_testnet.json
+++ b/configs/coins/groestlcoin_testnet.json
@ -22,10 +22,10 @@
    "package_name": "backend-groestlcoin-testnet",
    "package_revision": "satoshilabs-1",
    "system_user": "groestlcoin",
-    "version": "2.20.1",
-    "binary_url": "https://github.com/Groestlcoin/groestlcoin/releases/download/v2.20.1/groestlcoin-2.20.1-x86_64-linux-gnu.tar.gz",
+    "version": "2.21.0",
+    "binary_url": "https://github.com/Groestlcoin/groestlcoin/releases/download/v2.21.0/groestlcoin-2.21.0-x86_64-linux-gnu.tar.gz",
    "verification_type": "gpg-sha256",
-    "verification_source": "https://github.com/Groestlcoin/groestlcoin/releases/download/v2.20.1/SHA256SUMS.asc",
+    "verification_source": "https://github.com/Groestlcoin/groestlcoin/releases/download/v2.21.0/SHA256SUMS.asc",
    "extract_command": "tar -C backend --strip 1 -xf",
    "exclude_files": [
      "bin/groestlcoin-qt"
--- a/configs/coins/qtum.json
+++ b/configs/coins/qtum.json
@ -22,10 +22,10 @@
    "package_name": "backend-qtum",
    "package_revision": "satoshilabs-1",
    "system_user": "qtum",
-    "version": "0.19.1",
-    "binary_url": "https://github.com/qtumproject/qtum/releases/download/mainnet-ignition-v0.19.1/qtum-0.19.1-x86_64-linux-gnu.tar.gz",
+    "version": "0.20.1",
+    "binary_url": "https://github.com/qtumproject/qtum/releases/download/mainnet-ignition-v0.20.1/qtum-0.20.1-x86_64-linux-gnu.tar.gz",
    "verification_type": "sha256",
-    "verification_source": "044a8e535ff8a220dbcd1fe7fadae2429c123c97bd1fb5e7c50abc0e6640c8d4",
+    "verification_source": "e9a77eb3e2b76625fdc8058c12bc0790309b24b9c1ac39f4895e4f8756cf0010",
    "extract_command": "tar -C backend --strip 1 -xf",
    "exclude_files": [
      "bin/qtum-qt"
@ -67,4 +67,4 @@
    "package_maintainer": "CodeFace",
    "package_maintainer_email": "codeface@qtum.info"
  }
-}
+}
--- a/configs/coins/qtum_testnet.json
+++ b/configs/coins/qtum_testnet.json
@ -22,10 +22,10 @@
    "package_name": "backend-qtum-testnet",
    "package_revision": "satoshilabs-1",
    "system_user": "qtum",
-    "version": "0.19.1",
-    "binary_url": "https://github.com/qtumproject/qtum/releases/download/mainnet-ignition-v0.19.1/qtum-0.19.1-x86_64-linux-gnu.tar.gz",
+    "version": "0.20.1",
+    "binary_url": "https://github.com/qtumproject/qtum/releases/download/mainnet-ignition-v0.20.1/qtum-0.20.1-x86_64-linux-gnu.tar.gz",
    "verification_type": "sha256",
-    "verification_source": "044a8e535ff8a220dbcd1fe7fadae2429c123c97bd1fb5e7c50abc0e6640c8d4",
+    "verification_source": "e9a77eb3e2b76625fdc8058c12bc0790309b24b9c1ac39f4895e4f8756cf0010",
    "extract_command": "tar -C backend --strip 1 -xf",
    "exclude_files": [
      "bin/qtum-qt"
@ -67,4 +67,4 @@
    "package_maintainer": "CodeFace",
    "package_maintainer_email": "codeface@qtum.info"
  }
-}
+}
--- a/configs/coins/trezarcoin.json
+++ b/configs/coins/trezarcoin.json
@ -0,0 +1,70 @@
+{
+  "coin": {
+    "name": "Trezarcoin",
+    "shortcut": "TZC",
+    "label": "Trezarcoin",
+    "alias": "trezarcoin"
+  },
+  "ports": {
+    "backend_rpc": 8096,
+    "backend_message_queue": 38396,
+    "blockbook_internal": 9096,
+    "blockbook_public": 9196
+  },
+  "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-trezarcoin",
+    "package_revision": "satoshilabs-1",
+    "system_user": "trezarcoin",
+    "version": "2.1.1",
+    "binary_url": "https://github.com/TrezarCoin/TrezarCoin/releases/download/v2.1.1.0/trezarcoin-2.1.1-x86_64-linux-gnu.tar.gz",
+    "verification_type": "sha256",
+    "verification_source": "4b41c4fecf36a870d6bb7298d85b211f61d9f2bcc6c1bef3167f3ef772bc6fdf",
+    "extract_command": "tar -C backend --strip 1 -xf",
+    "exclude_files": [
+      "bin/trezarcoin-qt"
+    ],
+    "exec_command_template": "{{.Env.BackendInstallPath}}/{{.Coin.Alias}}/bin/trezarcoind -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": {
+      "whitelist": "127.0.0.1"
+    }
+  },
+  "blockbook": {
+    "package_name": "blockbook-trezarcoin",
+    "system_user": "blockbook-trezarcoin",
+    "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,
+      "xpub_magic": 27108450,
+      "slip44": 232,
+      "additional_params": {
+        "fiat_rates": "coingecko",
+        "fiat_rates_params": "{\"url\": \"https://api.coingecko.com/api/v3\", \"coin\": \"trezarcoin\", \"periodSeconds\": 60}"
+      }
+    }
+  },
+  "meta": {
+    "package_maintainer": "IT",
+    "package_maintainer_email": "it@satoshilabs.com"
+  }
+}
--- a/configs/coins/zcash.json
+++ b/configs/coins/zcash.json
@ -22,10 +22,10 @@
    "package_name": "backend-zcash",
    "package_revision": "satoshilabs-1",
    "system_user": "zcash",
-    "version": "4.1.1",
-    "binary_url": "https://z.cash/downloads/zcash-4.1.1-linux64-debian-stretch.tar.gz",
+    "version": "4.2.0",
+    "binary_url": "https://z.cash/downloads/zcash-4.2.0-linux64-debian-stretch.tar.gz",
    "verification_type": "sha256",
-    "verification_source": "50b639f0d1c7177809535bad7631490297aa7873d867425096eb8c7a04b2b132",
+    "verification_source": "386633ba5f740252830fab9f6dd6bc9cb31514357643b7a5caf11f5c4faa63af",
    "extract_command": "tar -C backend --strip 1 -xf",
    "exclude_files": [],
    "exec_command_template": "{{.Env.BackendInstallPath}}/{{.Coin.Alias}}/bin/zcashd -datadir={{.Env.BackendDataPath}}/{{.Coin.Alias}}/backend -conf={{.Env.BackendInstallPath}}/{{.Coin.Alias}}/{{.Coin.Alias}}.conf -pid=/run/{{.Coin.Alias}}/{{.Coin.Alias}}.pid",
--- a/configs/coins/zcash_testnet.json
+++ b/configs/coins/zcash_testnet.json
@ -22,10 +22,10 @@
    "package_name": "backend-zcash-testnet",
    "package_revision": "satoshilabs-1",
    "system_user": "zcash",
-    "version": "4.1.1",
-    "binary_url": "https://z.cash/downloads/zcash-4.1.1-linux64-debian-stretch.tar.gz",
+    "version": "4.2.0",
+    "binary_url": "https://z.cash/downloads/zcash-4.2.0-linux64-debian-stretch.tar.gz",
    "verification_type": "sha256",
-    "verification_source": "50b639f0d1c7177809535bad7631490297aa7873d867425096eb8c7a04b2b132",
+    "verification_source": "386633ba5f740252830fab9f6dd6bc9cb31514357643b7a5caf11f5c4faa63af",
    "extract_command": "tar -C backend --strip 1 -xf",
    "exclude_files": [],
    "exec_command_template": "{{.Env.BackendInstallPath}}/{{.Coin.Alias}}/bin/zcashd -datadir={{.Env.BackendDataPath}}/{{.Coin.Alias}}/backend -conf={{.Env.BackendInstallPath}}/{{.Coin.Alias}}/{{.Coin.Alias}}.conf -pid=/run/{{.Coin.Alias}}/{{.Coin.Alias}}.pid",
--- a/configs/coins/zcoin.json
+++ b/configs/coins/zcoin.json
@ -1,125 +0,0 @@
-{
-  "coin": {
-    "name": "Zcoin",
-    "shortcut": "XZC",
-    "label": "Zcoin",
-    "alias": "zcoin"
-  },
-  "ports": {
-    "backend_rpc": 8050,
-    "backend_message_queue": 38350,
-    "blockbook_internal": 9050,
-    "blockbook_public": 9150
-  },
-  "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-zcoin",
-    "package_revision": "satoshilabs-1",
-    "system_user": "zcoin",
-    "version": "0.14.0.4",
-    "binary_url": "https://github.com/zcoinofficial/zcoin/releases/download/v0.14.0.4/zcoin-0.14.0.4-linux64.tar.gz",
-    "verification_type": "sha256",
-    "verification_source": "d060c76fe5fc0fe2527485035e984413881c4a845f65c4c9e71cc298b227a816",
-    "extract_command": "tar -C backend --strip 1 -xf",
-    "exclude_files": [
-      "bin/tor",
-      "bin/tor-gencert",
-      "bin/torify",
-      "bin/tor-print-ed-signing-cert",
-      "bin/tor-resolve",
-      "bin/zcoin-qt",
-      "bin/zcoin-tx",
-      "etc/tor/torrc.sample",
-      "home/ubuntu/build/zcoin/depends/x86_64-linux-gnu/cmake/relic-config.cmake",
-      "home/ubuntu/build/zcoin/depends/x86_64-linux-gnu/include/chiabls/aggregationinfo.hpp",
-      "home/ubuntu/build/zcoin/depends/x86_64-linux-gnu/include/chiabls/bls.hpp",
-      "home/ubuntu/build/zcoin/depends/x86_64-linux-gnu/include/chiabls/chaincode.hpp",
-      "home/ubuntu/build/zcoin/depends/x86_64-linux-gnu/include/chiabls/extendedprivatekey.hpp",
-      "home/ubuntu/build/zcoin/depends/x86_64-linux-gnu/include/chiabls/extendedpublickey.hpp",
-      "home/ubuntu/build/zcoin/depends/x86_64-linux-gnu/include/chiabls/privatekey.hpp",
-      "home/ubuntu/build/zcoin/depends/x86_64-linux-gnu/include/chiabls/publickey.hpp",
-      "home/ubuntu/build/zcoin/depends/x86_64-linux-gnu/include/chiabls/signature.hpp",
-      "home/ubuntu/build/zcoin/depends/x86_64-linux-gnu/include/chiabls/test-utils.hpp",
-      "home/ubuntu/build/zcoin/depends/x86_64-linux-gnu/include/chiabls/util.hpp",
-      "home/ubuntu/build/zcoin/depends/x86_64-linux-gnu/include/low/relic_bn_low.h",
-      "home/ubuntu/build/zcoin/depends/x86_64-linux-gnu/include/low/relic_dv_low.h",
-      "home/ubuntu/build/zcoin/depends/x86_64-linux-gnu/include/low/relic_fb_low.h",
-      "home/ubuntu/build/zcoin/depends/x86_64-linux-gnu/include/low/relic_fp_low.h",
-      "home/ubuntu/build/zcoin/depends/x86_64-linux-gnu/include/low/relic_fpx_low.h",
-      "home/ubuntu/build/zcoin/depends/x86_64-linux-gnu/include/relic_arch.h",
-      "home/ubuntu/build/zcoin/depends/x86_64-linux-gnu/include/relic_bc.h",
-      "home/ubuntu/build/zcoin/depends/x86_64-linux-gnu/include/relic_bench.h",
-      "home/ubuntu/build/zcoin/depends/x86_64-linux-gnu/include/relic_bn.h",
-      "home/ubuntu/build/zcoin/depends/x86_64-linux-gnu/include/relic_conf.h",
-      "home/ubuntu/build/zcoin/depends/x86_64-linux-gnu/include/relic_core.h",
-      "home/ubuntu/build/zcoin/depends/x86_64-linux-gnu/include/relic_cp.h",
-      "home/ubuntu/build/zcoin/depends/x86_64-linux-gnu/include/relic_dv.h",
-      "home/ubuntu/build/zcoin/depends/x86_64-linux-gnu/include/relic_eb.h",
-      "home/ubuntu/build/zcoin/depends/x86_64-linux-gnu/include/relic_ec.h",
-      "home/ubuntu/build/zcoin/depends/x86_64-linux-gnu/include/relic_ed.h",
-      "home/ubuntu/build/zcoin/depends/x86_64-linux-gnu/include/relic_ep.h",
-      "home/ubuntu/build/zcoin/depends/x86_64-linux-gnu/include/relic_epx.h",
-      "home/ubuntu/build/zcoin/depends/x86_64-linux-gnu/include/relic_err.h",
-      "home/ubuntu/build/zcoin/depends/x86_64-linux-gnu/include/relic_fb.h",
-      "home/ubuntu/build/zcoin/depends/x86_64-linux-gnu/include/relic_fbx.h",
-      "home/ubuntu/build/zcoin/depends/x86_64-linux-gnu/include/relic_fp.h",
-      "home/ubuntu/build/zcoin/depends/x86_64-linux-gnu/include/relic_fpx.h",
-      "home/ubuntu/build/zcoin/depends/x86_64-linux-gnu/include/relic.h",
-      "home/ubuntu/build/zcoin/depends/x86_64-linux-gnu/include/relic_label.h",
-      "home/ubuntu/build/zcoin/depends/x86_64-linux-gnu/include/relic_md.h",
-      "home/ubuntu/build/zcoin/depends/x86_64-linux-gnu/include/relic_pc.h",
-      "home/ubuntu/build/zcoin/depends/x86_64-linux-gnu/include/relic_pool.h",
-      "home/ubuntu/build/zcoin/depends/x86_64-linux-gnu/include/relic_pp.h",
-      "home/ubuntu/build/zcoin/depends/x86_64-linux-gnu/include/relic_rand.h",
-      "home/ubuntu/build/zcoin/depends/x86_64-linux-gnu/include/relic_test.h",
-      "home/ubuntu/build/zcoin/depends/x86_64-linux-gnu/include/relic_trace.h",
-      "home/ubuntu/build/zcoin/depends/x86_64-linux-gnu/include/relic_types.h",
-      "home/ubuntu/build/zcoin/depends/x86_64-linux-gnu/include/relic_util.h",
-      "include/bitcoinconsensus.h",
-      "lib/libbitcoinconsensus.so",
-      "lib/libbitcoinconsensus.so.0",
-      "lib/libbitcoinconsensus.so.0.0.0",
-      "README.md",
-      "share/tor/geoip",
-      "share/tor/geoip6"
-    ],
-    "exec_command_template": "{{.Env.BackendInstallPath}}/{{.Coin.Alias}}/bin/zcoind -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"
-    }
-  },
-  "blockbook": {
-    "package_name": "blockbook-zcoin",
-    "system_user": "blockbook-zcoin",
-    "internal_binding_template": ":{{.Ports.BlockbookInternal}}",
-    "public_binding_template": ":{{.Ports.BlockbookPublic}}",
-    "explorer_url": "",
-    "additional_params": "",
-    "block_chain": {
-      "mempool_workers": 8,
-      "mempool_sub_workers": 2,
-      "block_addresses_to_keep": 300,
-      "xpub_magic": 76067358,
-      "slip44": 136,
-      "additional_params": {}
-    }
-  },
-  "meta": {
-    "package_maintainer": "Putta Khunchalee",
-    "package_maintainer_email": "putta@zcoin.io"
-  }
-}
--- a/db/dboptions.go
+++ b/db/dboptions.go
@ -4,9 +4,6 @@ package db
 import "C"

 import (
-	"reflect"
-	"unsafe"
-
 	"github.com/tecbot/gorocksdb"
 )

@ -45,18 +42,13 @@ func boolToChar(b bool) C.uchar {
 */

 func createAndSetDBOptions(bloomBits int, c *gorocksdb.Cache, maxOpenFiles int) *gorocksdb.Options {
-	// blockOpts := gorocksdb.NewDefaultBlockBasedTableOptions()
-	cNativeBlockOpts := C.rocksdb_block_based_options_create()
-	blockOpts := &gorocksdb.BlockBasedTableOptions{}
-	cBlockField := reflect.Indirect(reflect.ValueOf(blockOpts)).FieldByName("c")
-	cBlockPtr := (**C.rocksdb_block_based_table_options_t)(unsafe.Pointer(cBlockField.UnsafeAddr()))
-	*cBlockPtr = cNativeBlockOpts
+	blockOpts := gorocksdb.NewDefaultBlockBasedTableOptions()
 	blockOpts.SetBlockSize(32 << 10) // 32kB
 	blockOpts.SetBlockCache(c)
 	if bloomBits > 0 {
 		blockOpts.SetFilterPolicy(gorocksdb.NewBloomFilter(bloomBits))
 	}
-	C.rocksdb_block_based_options_set_format_version(cNativeBlockOpts, 4)
+	blockOpts.SetFormatVersion(4)

 	opts := gorocksdb.NewDefaultOptions()
 	opts.SetBlockBasedTableFactory(blockOpts)
--- a/db/rocksdb.go
+++ b/db/rocksdb.go
@ -157,7 +157,7 @@ func NewRocksDB(path string, cacheSize, maxOpenFiles int, parser bchain.BlockCha
 		return nil, errors.New("Unknown chain type")
 	}

-	c := gorocksdb.NewLRUCache(cacheSize)
+	c := gorocksdb.NewLRUCache(uint64(cacheSize))
 	db, cfh, err := openDB(path, c, maxOpenFiles)
 	if err != nil {
 		return nil, err
@ -308,17 +308,17 @@ func (d *RocksDB) Reopen() error {
 	return nil
 }

-func atoi(s string) int {
+func atoUint64(s string) uint64 {
 	i, err := strconv.Atoi(s)
 	if err != nil {
 		return 0
 	}
-	return i
+	return uint64(i)
 }

 // GetMemoryStats returns memory usage statistics as reported by RocksDB
 func (d *RocksDB) GetMemoryStats() string {
-	var total, indexAndFilter, memtable int
+	var total, indexAndFilter, memtable uint64
 	type columnStats struct {
 		name           string
 		indexAndFilter string
@ -329,12 +329,12 @@ func (d *RocksDB) GetMemoryStats() string {
 		cs[i].name = cfNames[i]
 		cs[i].indexAndFilter = d.db.GetPropertyCF("rocksdb.estimate-table-readers-mem", d.cfh[i])
 		cs[i].memtable = d.db.GetPropertyCF("rocksdb.cur-size-all-mem-tables", d.cfh[i])
-		indexAndFilter += atoi(cs[i].indexAndFilter)
-		memtable += atoi(cs[i].memtable)
+		indexAndFilter += atoUint64(cs[i].indexAndFilter)
+		memtable += atoUint64(cs[i].memtable)
 	}
 	m := struct {
-		cacheUsage       int
-		pinnedCacheUsage int
+		cacheUsage       uint64
+		pinnedCacheUsage uint64
 		columns          []columnStats
 	}{
 		cacheUsage:       d.cache.GetUsage(),
--- a/db/sync.go
+++ b/db/sync.go
@ -44,6 +44,7 @@ func NewSyncWorker(db *RocksDB, chain bchain.BlockChain, syncWorkers, syncChunk
 }

 var errSynced = errors.New("synced")
+var errFork = errors.New("fork")

 // ErrOperationInterrupted is returned when operation is interrupted by OS signal
 var ErrOperationInterrupted = errors.New("ErrOperationInterrupted")
@ -105,7 +106,7 @@ func (w *SyncWorker) resyncIndex(onNewBlock bchain.OnNewBlockFunc, initialSync b
 		}
 		if remoteHash != localBestHash {
 			// forked - the remote hash differs from the local hash at the same height
-			glog.Info("resync: local is forked at height ", localBestHeight, ", local hash ", localBestHash, ", remote hash", remoteHash)
+			glog.Info("resync: local is forked at height ", localBestHeight, ", local hash ", localBestHash, ", remote hash ", remoteHash)
 			return w.handleFork(localBestHeight, localBestHash, onNewBlock, initialSync)
 		}
 		glog.Info("resync: local at ", localBestHeight, " is behind")
@ -141,7 +142,11 @@ func (w *SyncWorker) resyncIndex(onNewBlock bchain.OnNewBlockFunc, initialSync b
 			return w.resyncIndex(onNewBlock, initialSync)
 		}
 	}
-	return w.connectBlocks(onNewBlock, initialSync)
+	err = w.connectBlocks(onNewBlock, initialSync)
+	if err == errFork {
+		return w.resyncIndex(onNewBlock, initialSync)
+	}
+	return err
 }

 func (w *SyncWorker) handleFork(localBestHeight uint32, localBestHash string, onNewBlock bchain.OnNewBlockFunc, initialSync bool) error {
@ -377,9 +382,9 @@ func (w *SyncWorker) getBlockChain(out chan blockResult, done chan struct{}) {

 	hash := w.startHash
 	height := w.startHeight
+	prevHash := ""

-	// some coins do not return Next hash
-	// must loop until error
+	// loop until error ErrBlockNotFound
 	for {
 		select {
 		case <-done:
@ -394,6 +399,12 @@ func (w *SyncWorker) getBlockChain(out chan blockResult, done chan struct{}) {
 			out <- blockResult{err: err}
 			return
 		}
+		if block.Prev != "" && prevHash != "" && prevHash != block.Prev {
+			glog.Infof("sync: fork detected at height %d %s, local prevHash %s, remote prevHash %s", height, block.Hash, prevHash, block.Prev)
+			out <- blockResult{err: errFork}
+			return
+		}
+		prevHash = block.Hash
 		hash = block.Next
 		height++
 		out <- blockResult{block: block}
--- a/docs/api.md
+++ b/docs/api.md
@ -764,11 +764,32 @@ The websocket interface provides the following requests:

 The client can subscribe to the following events:

- new block added to blockchain
- new transaction for given address (list of addresses)
- new currency rate ticker
+- `subscribeNewBlock` - new block added to blockchain
+- `subscribeAddresses` - new transaction for given address (list of addresses)
+- `subscribeFiatRates` - new currency rate ticker

 There can be always only one subscription of given event per connection, i.e. new list of addresses replaces previous list of addresses.

 _Note: If there is reorg on the backend (blockchain), you will get a new block hash with the same or even smaller height if the reorg is deeper_

+Websocket communication format
+```
+{
+  "id":"1", //an id to help to identify the response
+  "method":"<The method that you would like to call>", 
+  "params":<The params (same as in the API call>
+}
+```
+
+Example for subscribing to an address (or multiple addresses)
+```
+{
+  "id":"1", 
+  "method":"subscribeAddresses", 
+  "params":{
+    "addresses":["mnYYiDCb2JZXnqEeXta1nkt5oCVe2RVhJj", "tb1qp0we5epypgj4acd2c4au58045ruud2pd6heuee"]
+   }
+}
+```
+
+
--- a/docs/build.md
+++ b/docs/build.md
@ -194,7 +194,7 @@ like macOS or Windows, please read instructions specific for each project.
 Setup go environment:

 ```
-wget https://dl.google.com/go/go1.14.2.linux-amd64.tar.tz && tar xf go1.14.2.linux-amd64.tar.gz
+wget https://golang.org/dl/go1.14.2.linux-amd64.tar.gz && tar xf go1.14.2.linux-amd64.tar.gz
 sudo mv go /opt/go
 sudo ln -s /opt/go/bin/go /usr/bin/go
 # see `go help gopath` for details
@ -211,6 +211,7 @@ sudo apt-get update && sudo apt-get install -y \
    build-essential git wget pkg-config libzmq3-dev libgflags-dev libsnappy-dev zlib1g-dev libbz2-dev liblz4-dev
 git clone https://github.com/facebook/rocksdb.git
 cd rocksdb
+git checkout v6.8.1
 CFLAGS=-fPIC CXXFLAGS=-fPIC make release
 ```

@ -218,11 +219,20 @@ Setup variables for gorocksdb: https://github.com/tecbot/gorocksdb

 ```
 export CGO_CFLAGS="-I/path/to/rocksdb/include"
-export CGO_LDFLAGS="-L/path/to/rocksdb -lrocksdb -lstdc++ -lm -lz -lbz2 -lsnappy -llz4"
+export CGO_LDFLAGS="-L/path/to/rocksdb -lrocksdb -lstdc++ -lm -lz -ldl -lbz2 -lsnappy -llz4"
 ```

 Install ZeroMQ: https://github.com/zeromq/libzmq

+```
+git clone https://github.com/zeromq/libzmq
+cd libzmq
+./autogen.sh
+./configure
+make
+sudo make install
+```
+
 Get blockbook sources, install dependencies, build:

 ```
@ -242,9 +252,11 @@ When you have running back-end daemon you can start Blockbook. It is highly reco
 for both Blockbook and back-end daemon. You can use *contrib/scripts/build-blockchaincfg.sh* that will generate
 Blockbook's blockchain configuration from our coin definition files.

+Also, check that your operating system open files limit is set to high enough value - recommended is at least 20000.
+
 Example for Bitcoin:
 ```
-contrib/scripts/build-blockchaincfg.sh
+./contrib/scripts/build-blockchaincfg.sh <coin>
 ./blockbook -sync -blockchaincfg=build/blockchaincfg.json -internal=:9030 -public=:9130 -certfile=server/testcert -logtostderr
 ```

--- a/docs/ports.md
+++ b/docs/ports.md
@ -22,7 +22,7 @@
 | Liquid                 | 9047                    | 9147                  | 8047             | 38347                       |
 | Fujicoin               | 9048                    | 9148                  | 8048             | 38348                       |
 | PIVX                   | 9049                    | 9149                  | 8049             | 38349                       |
-| Zcoin                  | 9050                    | 9150                  | 8050             | 38350                       |
+| Firo                   | 9050                    | 9150                  | 8050             | 38350                       |
 | Koto                   | 9051                    | 9151                  | 8051             | 38351                       |
 | Bellcoin               | 9052                    | 9152                  | 8052             | 38352                       |
 | NULS                   | 9053                    | 9153                  | 8053             | 38353                       |
@ -44,6 +44,8 @@
 | Unobtanium             | 9092                    | 9192                  | 65535            | 38392                       |
 | Omotenashicoin         | 9094                    | 9194                  | 8094             | 38394                       |
 | BitZeny                | 9095                    | 9195                  | 8095             | 38395                       |
+| Trezarcoin             | 9096                    | 9196                  | 8096             | 38396                       |
+| Bitcoin Signet         | 19020                   | 19120                 | 18020            | 48320                       |
 | Bitcoin Testnet        | 19030                   | 19130                 | 18030            | 48330                       |
 | Bitcoin Cash Testnet   | 19031                   | 19131                 | 18031            | 48331                       |
 | Zcash Testnet          | 19032                   | 19132                 | 18032            | 48332                       |
--- a/go.mod
+++ b/go.mod
@ -1,13 +1,13 @@
 module github.com/trezor/blockbook

-go 1.13
+go 1.15

 require (
 	github.com/Groestlcoin/go-groestl-hash v0.0.0-20181012171753-790653ac190c // indirect
 	github.com/allegro/bigcache v1.2.1 // indirect
-	github.com/aristanetworks/goarista v0.0.0-20200224203130-895b4c57c44d // indirect
+	github.com/aristanetworks/goarista v0.0.0-20201012165903-2cb20defcd66 // indirect
 	github.com/bsm/go-vlq v0.0.0-20150828105119-ec6e8d4f5f4e
-	github.com/btcsuite/btcd v0.20.1-beta // indirect
+	github.com/btcsuite/btcd v0.21.0-beta // indirect
 	github.com/dchest/blake256 v1.0.0 // indirect
 	github.com/deckarep/golang-set v1.7.1
 	github.com/decred/dcrd/chaincfg/chainhash v1.0.2
@ -17,14 +17,14 @@ require (
 	github.com/decred/dcrd/dcrutil/v3 v3.0.0
 	github.com/decred/dcrd/hdkeychain/v3 v3.0.0
 	github.com/decred/dcrd/txscript/v3 v3.0.0
-	github.com/ethereum/go-ethereum v1.9.20
+	github.com/ethereum/go-ethereum v1.9.24
 	github.com/facebookgo/ensure v0.0.0-20200202191622-63f1cf65ac4c // indirect
 	github.com/facebookgo/stack v0.0.0-20160209184415-751773369052 // indirect
 	github.com/facebookgo/subset v0.0.0-20200203212716-c811ad88dec4 // indirect
 	github.com/gobuffalo/packr v1.13.7
-	github.com/gogo/protobuf v1.1.1
+	github.com/gogo/protobuf v1.2.1
 	github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b
-	github.com/golang/protobuf v1.3.2
+	github.com/golang/protobuf v1.4.3
 	github.com/gorilla/websocket v1.4.2
 	github.com/juju/errors v0.0.0-20170703010042-c7d06af17c68
 	github.com/juju/loggo v0.0.0-20190526231331-6e530bcce5d8 // indirect
@ -33,16 +33,14 @@ require (
 	github.com/martinboehm/btcd v0.0.0-20200313230603-83af86142d93
 	github.com/martinboehm/btcutil v0.0.0-20200229134221-d7706467ae8f
 	github.com/martinboehm/golang-socketio v0.0.0-20180414165752-f60b0a8befde
-	github.com/mr-tron/base58 v1.1.3 // indirect
+	github.com/mr-tron/base58 v1.2.0 // indirect
 	github.com/niemeyer/pretty v0.0.0-20200227124842-a10e7caefd8e // indirect
-	github.com/pebbe/zmq4 v1.0.0
-	github.com/prometheus/client_golang v1.1.0
-	github.com/prometheus/common v0.9.1 // indirect
-	github.com/prometheus/procfs v0.0.10 // indirect
+	github.com/pebbe/zmq4 v1.2.1
+	github.com/prometheus/client_golang v1.8.0
 	github.com/rs/cors v1.7.0 // indirect
-	github.com/schancel/cashaddr-converter v0.0.0-20180113210041-0a38f5822f79
-	github.com/tecbot/gorocksdb v0.0.0-20180907100951-214b6b7bc0f0
-	golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9
+	github.com/schancel/cashaddr-converter v0.0.0-20181111022653-4769e7add95a
+	github.com/tecbot/gorocksdb v0.0.0-20191217155057-f0fad39f321c
+	golang.org/x/crypto v0.0.0-20201112155050-0c6587e931a9
 	gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f // indirect
 	gopkg.in/mgo.v2 v2.0.0-20190816093944-a6b53ec6cb22 // indirect
 )
--- a/go.sum
+++ b/go.sum
@ -1,4 +1,5 @@
 cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
+cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
 github.com/Azure/azure-pipeline-go v0.2.1/go.mod h1:UGSo8XybXnIGZ3epmeBw7Jdz+HiUVpqIlpz/HKHylF4=
 github.com/Azure/azure-pipeline-go v0.2.2/go.mod h1:4rQ/NZncSvGqNkkOsNpOU1tgoNuIlp9AfUH5G1tvCHc=
 github.com/Azure/azure-storage-blob-go v0.7.0/go.mod h1:f9YQKtsG1nMisotuTPpO0tjNuEjKRYAcJU8/ydDI++4=
@ -13,66 +14,99 @@ github.com/Azure/go-autorest/autorest/mocks v0.3.0/go.mod h1:a8FDP3DYzQ4RYfVAxAN
 github.com/Azure/go-autorest/logger v0.1.0/go.mod h1:oExouG+K6PryycPJfVSxi/koC6LSNgds39diKLz7Vrc=
 github.com/Azure/go-autorest/tracing v0.5.0/go.mod h1:r/s2XiOKccPW3HrqB+W0TQzfbtp2fGCgRFtBroKn4Dk=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
-github.com/DataDog/zstd v1.3.6-0.20190409195224-796139022798/go.mod h1:1jcaCB/ufaK+sKp1NBhlGmpz41jOoPQ35bpF36t7BBo=
+github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
 github.com/Groestlcoin/go-groestl-hash v0.0.0-20181012171753-790653ac190c h1:8bYNmjELeCj7DEh/dN7zFzkJ0upK3GkbOC/0u1HMQ5s=
 github.com/Groestlcoin/go-groestl-hash v0.0.0-20181012171753-790653ac190c/go.mod h1:DwgC62sAn4RgH4L+O8REgcE7f0XplHPNeRYFy+ffy1M=
+github.com/Knetic/govaluate v3.0.1-0.20171022003610-9aa49832a739+incompatible/go.mod h1:r7JcOSlj0wfOMncg0iLm8Leh48TZaKVeNIfJntJ2wa0=
 github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU=
-github.com/Shopify/sarama v1.23.1/go.mod h1:XLH1GYJnLVE0XCr6KdJGVJRTwY30moWNJ4sERjXX6fs=
+github.com/Shopify/sarama v1.19.0/go.mod h1:FVkBWblsNy7DGZRfXLU0O9RCGt5g3g3yEuWXgklEdEo=
+github.com/Shopify/sarama v1.26.1/go.mod h1:NbSGBSSndYaIhRcBtY9V0U7AyH+x71bG668AuWys/yU=
 github.com/Shopify/toxiproxy v2.1.4+incompatible/go.mod h1:OXgGpZ6Cli1/URJOF1DMxUHB2q5Ap20/P/eIdh4G0pI=
 github.com/StackExchange/wmi v0.0.0-20180116203802-5d049714c4a6 h1:fLjPD/aNc3UIOA6tDi6QXUemppXK3P9BI7mr2hd6gx8=
 github.com/StackExchange/wmi v0.0.0-20180116203802-5d049714c4a6/go.mod h1:3eOhrUMpNV+6aFIbp5/iudMxNCF27Vw2OZgy4xEx0Fg=
 github.com/VictoriaMetrics/fastcache v1.5.7 h1:4y6y0G8PRzszQUYIQHHssv/jgPHAb5qQuuDNdCbyAgw=
 github.com/VictoriaMetrics/fastcache v1.5.7/go.mod h1:ptDBkNMQI4RtmVo8VS/XwRY6RoTu1dAWCbrk+6WsEM8=
+github.com/VividCortex/gohistogram v1.0.0/go.mod h1:Pf5mBqqDxYaXu3hDrrU+w6nw50o/4+TcAqDqk/vUH7g=
 github.com/aead/siphash v1.0.1 h1:FwHfE/T45KPKYuuSAKyyvE+oPWcaQ+CUmFW0bPlM+kg=
 github.com/aead/siphash v1.0.1/go.mod h1:Nywa3cDsYNNK3gaciGTWPwHt0wlpNV15vwmswBAUSII=
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 github.com/btcsuite/btcd v0.20.1-beta/go.mod h1:wVuoA8VJLEcwgqHBwHmzLRazpKxTv13Px/pDuV7OomQ=
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 golang.org/x/tools v0.0.0-20190524140312-2c0ae7006135/go.mod h1:RgjU9mgBXZiqYHBnxXauZ1Gv1EHHAz9KjViQ78xBX0Q=
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 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
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 google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
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 gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=
 gopkg.in/bsm/ratelimit.v1 v1.0.0-20160220154919-db14e161995a/go.mod h1:KF9sEfUPAXdG8Oev9e99iLGnl2uJMjc5B+4y3O7x610=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
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 gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f h1:BLraFXnmrev5lT+xlilqcH8XK9/i0At2xKjWk4p6zsU=
 gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/fsnotify.v1 v1.4.7 h1:xOHLXZwVvI9hhs+cLKq5+I5onOuwQLhQwiu63xxlHs4=
+gopkg.in/cheggaaa/pb.v1 v1.0.25/go.mod h1:V/YB90LKu/1FcN3WVnfiiE5oMCibMjukxqG/qStrOgw=
+gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI=
 gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys=
+gopkg.in/gcfg.v1 v1.2.3/go.mod h1:yesOnuUOFQAhST5vPY4nbZsb/huCgGGXlipJsBn0b3o=
 gopkg.in/jcmturner/aescts.v1 v1.0.1/go.mod h1:nsR8qBOg+OucoIW+WMhB3GspUQXq9XorLnQb9XtvcOo=
 gopkg.in/jcmturner/dnsutils.v1 v1.0.1/go.mod h1:m3v+5svpVOhtFAP/wSz+yzh4Mc0Fg7eRhxkJMWSIz9Q=
 gopkg.in/jcmturner/goidentity.v3 v3.0.0/go.mod h1:oG2kH0IvSYNIu80dVAyu/yoefjq1mNfM5bm88whjWx4=
-gopkg.in/jcmturner/gokrb5.v7 v7.2.3/go.mod h1:l8VISx+WGYp+Fp7KRbsiUuXTTOnxIc3Tuvyavf11/WM=
+gopkg.in/jcmturner/gokrb5.v7 v7.5.0/go.mod h1:l8VISx+WGYp+Fp7KRbsiUuXTTOnxIc3Tuvyavf11/WM=
 gopkg.in/jcmturner/rpc.v1 v1.1.0/go.mod h1:YIdkC4XfD6GXbzje11McwsDuOlZQSb9W4vfLvuNnlv8=
 gopkg.in/mgo.v2 v2.0.0-20190816093944-a6b53ec6cb22 h1:VpOs+IwYnYBaFnrNAeB8UUWtL3vEUnzSCL1nVjPhqrw=
 gopkg.in/mgo.v2 v2.0.0-20190816093944-a6b53ec6cb22/go.mod h1:yeKp02qBN3iKW1OzL3MGk2IdtZzaj7SFntXj72NppTA=
@ -428,14 +719,24 @@ gopkg.in/natefinch/npipe.v2 v2.0.0-20160621034901-c1b8fa8bdcce/go.mod h1:5AcXVHN
 gopkg.in/olebedev/go-duktape.v3 v3.0.0-20200619000410-60c24ae608a6 h1:a6cXbcDDUkSBlpnkWV1bJ+vv3mOgQEltEJ2rPxroVu0=
 gopkg.in/olebedev/go-duktape.v3 v3.0.0-20200619000410-60c24ae608a6/go.mod h1:uAJfkITjFhyEEuUfm7bsmCZRbW5WRq8s9EY8HZ6hCns=
 gopkg.in/redis.v4 v4.2.4/go.mod h1:8KREHdypkCEojGKQcjMqAODMICIVwZAONWq8RowTITA=
+gopkg.in/resty.v1 v1.12.0/go.mod h1:mDo4pnntr5jdWRML875a/NmxYqAlA73dVijT2AXvQQo=
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 h1:uRGJdciOHaEIrze2W8Q3AKkepLTh2hOroT7a+7czfdQ=
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
 gopkg.in/urfave/cli.v1 v1.20.0 h1:NdAVW6RYxDif9DhDHaAortIu956m2c0v+09AZBPTbE0=
 gopkg.in/urfave/cli.v1 v1.20.0/go.mod h1:vuBzUtMdQeixQj8LVd+/98pzhxNGQoyuPBlsXHOQNO0=
-gopkg.in/yaml.v2 v2.2.1 h1:mUhvW9EsL+naU5Q3cakzfE91YhliOondGd6ZrsDBHQE=
+gopkg.in/warnings.v0 v0.1.2/go.mod h1:jksf8JmL6Qr/oQM2OXTHunEvvTAsrWBLb6OOjuVWRNI=
+gopkg.in/yaml.v2 v2.0.0-20170812160011-eb3733d160e7/go.mod h1:JAlM8MvJe8wmxCU4Bli9HhUf9+ttbYbLASfIpnQbh74=
 gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-gopkg.in/yaml.v2 v2.2.4 h1:/eiJrUcujPVeJ3xlSWaiNi3uSVmDGBK1pDHUHAnao1I=
 gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.2.5/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.3.0 h1:clyUAQHOM3G0M3f5vQj7LuJrETvjVot3Z5el9nffUtU=
+gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gotest.tools v2.2.0+incompatible/go.mod h1:DsYFclhRJ6vuDpmuTbkuFWG+y2sxOXAzmJt81HFBacw=
+honnef.co/go/tools v0.0.0-20180728063816-88497007e858/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
+honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
+honnef.co/go/tools v0.0.1-2019.2.3/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt0JzvZhAg=
+sigs.k8s.io/yaml v1.1.0/go.mod h1:UJmg0vDUVViEyp3mgSv9WPwZCDxu4rQW1olrI1uml+o=
+sourcegraph.com/sourcegraph/appdash v0.0.0-20190731080439-ebfcffb1b5c0/go.mod h1:hI742Nqp5OhwiqlzhgfbWU4mW4yO10fP+LoT9WOswdU=
--- a/server/public.go
+++ b/server/public.go
@ -975,6 +975,9 @@ func (s *PublicServer) apiTxSpecific(r *http.Request, apiVersion int) (interface
 	var err error
 	s.metrics.ExplorerViews.With(common.Labels{"action": "api-tx-specific"}).Inc()
 	tx, err = s.chain.GetTransactionSpecific(&bchain.Tx{Txid: txid})
+	if err == bchain.ErrTxNotFound {
+		return nil, api.NewAPIError(fmt.Sprintf("Transaction '%v' not found", txid), true)
+	}
 	return tx, err
 }

--- a/server/websocket.go
+++ b/server/websocket.go
@ -144,6 +144,7 @@ func (s *WebsocketServer) GetHandler() http.Handler {

 func (s *WebsocketServer) closeChannel(c *websocketChannel) {
 	if c.CloseOut() {
+		c.conn.Close()
 		s.onDisconnect(c)
 	}
 }
@ -152,7 +153,6 @@ func (c *websocketChannel) CloseOut() bool {
 	c.aliveLock.Lock()
 	defer c.aliveLock.Unlock()
 	if c.alive {
-		c.conn.Close()
 		c.alive = false
 		//clean out
 		close(c.out)
--- a/static/templates/tx.html
+++ b/static/templates/tx.html
@ -65,6 +65,18 @@
                <td>Fees</td>
                <td class="data">{{formatAmount $tx.FeesSat}} {{$cs}}</td>
            </tr>{{end -}}
+            {{- if not $tx.Confirmations}}
+            <tr>
+                <td><span title="Replace by fee">RBF</span></td>
+                <td class="data">
+                    {{- if $tx.Rbf}}
+                    <span title="Replace by fee transaction, could be replaced.">ON</span>
+                    {{- else -}}
+                    <span title="Final transaction that can not be replaced unless it is dropped from the mempool.">OFF️</span>
+                    {{end -}}
+                </td>
+            </tr>
+            {{end -}}
        </tbody>
    </table>
 </div>
@ -78,7 +90,7 @@
        <pre id="txSpecific"></pre>
    </div>
    <script type="text/javascript">
-        txSpecific = {{$tx.CoinSpecificJSON}};
+        txSpecific = {{$tx.CoinSpecificData}};
        function syntaxHighlight(json) {
            json = JSON.stringify(json, undefined, 2);
            json = json.replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;');
@ -101,4 +113,4 @@
        document.getElementById('txSpecific').innerHTML = syntaxHighlight(txSpecific);
    </script>
 </div>
-{{end}}
+{{end}}
--- a/static/templates/txdetail.html
+++ b/static/templates/txdetail.html
@ -3,7 +3,7 @@
    <div class="row line-bot">
        <div class="col-xs-7 col-md-8 ellipsis">
            <a href="/tx/{{$tx.Txid}}">{{$tx.Txid}}</a>
-            {{- if $tx.Rbf}}<span title="Replace-by-Fee (RBF) transaction, could be overriden"> ⚠️</span>{{end -}}
+            {{- if $tx.Rbf}}<span title="Replace-by-Fee (RBF) transaction, could be overriden"> RBF</span>{{end -}}
        </div>
        {{- if $tx.Blocktime}}<div class="col-xs-5 col-md-4 text-muted text-right">{{if $tx.Confirmations}}mined{{else}}first seen{{end}} {{formatUnixTime $tx.Blocktime}}</div>{{end -}}
    </div>
@ -90,4 +90,4 @@
        </div>
    </div>
 </div>
-{{end}}
+{{end}}
--- a/tests/dbtestdata/dbtestdata_ethereumtype.go
+++ b/tests/dbtestdata/dbtestdata_ethereumtype.go
--- a/tests/rpc/testdata/bitcoin_signet.json
+++ b/tests/rpc/testdata/bitcoin_signet.json
@ -0,0 +1,89 @@
+{
+    "blockHeight": 15254,
+    "blockHash": "000000e3c2b5c8193b96d7ddfab11d7ba04ecfa4f09c7c73ef565af8a3d5731b",
+    "blockTime": 1607488510,
+    "blockTxs": [
+        "484cbfd56b5f3ae079a2e48acd107cf63cbf6139249a69ad6a4f0f85a28e9187",
+        "175b6cbdc5155069339f01852ffaaa9908b8528b568ea24c5a6d1b64a3c2cda3",
+        "c3ae1e409836b70b1007069b3943d4cba64e8322b0badf811a671e154dc7a11d",
+        "1f1f01af015cbfc2e6ad40af3cd65dd5a89d2492ccb9dcbd8554f4ecfe3ec7e0"
+    ],
+    "txDetails": {
+        "175b6cbdc5155069339f01852ffaaa9908b8528b568ea24c5a6d1b64a3c2cda3": {
+            "hex": "02000000000101a80513c9c4a45e95089c7f574d5b793f1446128ef316f4353abbc4512dfc14930000000000feffffff02a086010000000000160014d2850d5a21ab3ca3fa2b395c2e6c354f3cae5a239cb00d0000000000160014c9df5d6ccbc6d067d1982267f5b06db644f4218f0247304402204fd46878214ac9cde3acbd5ffac35f7ea9773691090fee894457e626634b720c02201b8c66173193f74f4978703fe02f81ac0839dcebb25cc0cebe31ed5924871f48012103ecfc7e8d21743fe2677057b12b5bb608efd0e8ce065e467e584a48b0656f2c20953b0000",
+            "txid": "175b6cbdc5155069339f01852ffaaa9908b8528b568ea24c5a6d1b64a3c2cda3",
+            "blocktime": 1607488510,
+            "time": 1607488510,
+            "locktime": 15253,
+            "version": 2,
+            "vin": [
+                {
+                    "txid": "9314fc2d51c4bb3a35f416f38e1246143f795b4d577f9c08955ea4c4c91305a8",
+                    "vout": 0,
+                    "sequence": 4294967294,
+                    "scriptSig": {
+                        "hex": ""
+                    }
+                }
+            ],
+            "vout": [
+                {
+                    "value": 0.001,
+                    "n": 0,
+                    "scriptPubKey": {
+                        "hex": "0014d2850d5a21ab3ca3fa2b395c2e6c354f3cae5a23"
+                    }
+                },
+                {
+                    "value": 0.0089718,
+                    "n": 1,
+                    "scriptPubKey": {
+                        "hex": "0014c9df5d6ccbc6d067d1982267f5b06db644f4218f"
+                    }
+                }
+            ]
+        },
+        "1f1f01af015cbfc2e6ad40af3cd65dd5a89d2492ccb9dcbd8554f4ecfe3ec7e0": {
+            "hex": "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",
+            "txid": "1f1f01af015cbfc2e6ad40af3cd65dd5a89d2492ccb9dcbd8554f4ecfe3ec7e0",
+            "blocktime": 1607488510,
+            "time": 1607488510,
+            "locktime": 15253,
+            "version": 2,
+            "vin": [
+                {
+                    "txid": "2e50241fa30f154f1b3021c7d77608f6a7ea9f4bc0209eb1a0a7008e5bc88673",
+                    "vout": 1,
+                    "sequence": 4294967294,
+                    "scriptSig": {
+                        "hex": ""
+                    }
+                },
+                {
+                    "txid": "175b6cbdc5155069339f01852ffaaa9908b8528b568ea24c5a6d1b64a3c2cda3",
+                    "vout": 0,
+                    "sequence": 4294967294,
+                    "scriptSig": {
+                        "hex": ""
+                    }
+                }
+            ],
+            "vout": [
+                {
+                    "value": 0.0009578,
+                    "n": 0,
+                    "scriptPubKey": {
+                        "hex": "0014745e303dc3ded3cf4407bff76bb287f3c05df1c8"
+                    }
+                },
+                {
+                    "value": 0.001,
+                    "n": 1,
+                    "scriptPubKey": {
+                        "hex": "76a91462e907b15cbf27d5425399ebf6f0fb50ebb88f1888ac"
+                    }
+                }
+            ]
+        }
+    }
+}
--- a/tests/rpc/testdata/zcoin.json
+++ b/tests/rpc/testdata/zcoin.json
--- a/tests/rpc/testdata/trezarcoin.json
+++ b/tests/rpc/testdata/trezarcoin.json
@ -0,0 +1,32 @@
+{
+  "blockHash": "9c22576a9defad9cc5cf27ed479c2175d4eb396d1b7706bfd5066add9b0366d1",
+  "blockHeight": 1303796,
+  "blockTime": 1584710909,
+  "blockTxs": [
+    "c35f4d078ec352096c1f83908f87e4fbb9553f264b0ba139cd7ca82dc060105a"
+  ],
+  "txDetails": {
+    "c35f4d078ec352096c1f83908f87e4fbb9553f264b0ba139cd7ca82dc060105a": {
+      "txid": "c35f4d078ec352096c1f83908f87e4fbb9553f264b0ba139cd7ca82dc060105a",
+      "version": 1,
+      "vin": [
+        {
+          "coinbase": "03f4e41304c9c4745e08810078cef13400007a657267706f6f6c2e636f6d00",
+          "sequence": 0
+        }
+      ],
+      "vout": [
+        {
+          "value": 100.00000000,
+          "n": 0,
+          "scriptPubKey": {
+            "hex": "21036842117fa1b85649c3e2e84c759387d5670051213c61764e2a5bbf55260c2f3bac"
+          }
+        }
+      ],
+      "hex": "01000000fdc4745e010000000000000000000000000000000000000000000000000000000000000000ffffffff1f03f4e41304c9c4745e08810078cef13400007a657267706f6f6c2e636f6d00000000000100e1f505000000002321036842117fa1b85649c3e2e84c759387d5670051213c61764e2a5bbf55260c2f3bac00000000",
+      "time": 1584710909,
+      "blocktime": 1584710909
+    }
+  }
+}
--- a/tests/sync/testdata/bitcoin_signet.json
+++ b/tests/sync/testdata/bitcoin_signet.json
@ -0,0 +1,188 @@
+{
+    "connectBlocks": {
+        "syncRanges": [
+            {"lower": 15331, "upper": 15351}
+        ],
+        "blocks": {
+            "15343": {
+                "height": 15343,
+                "hash": "000001003f625cbecd53924713929b5a91b12edf4eb844f33781ecb6bb78e69b",
+                "noTxs": 4,
+                "txDetails": [
+                    {
+                        "hex": "020000000001017983f5982048b0f79f2d9349ef681d7f3039f29e3e896130e92d2283ff0757900100000000fdffffff02002d310100000000160014691b727701f2e4aec30fe57775a7439ea8d4c8d8dc6db41c000000001600147a0adbac8308cfef483600e0dd12954dbf1314a102463043021f2e8df6e4c8a6f8fc27656710f44ca45cc9042815e1a0466f94549643d13a190220740264294e9e341700ab463fe5bc9085cbd8cf886aac4a0f310cf55b1d836725012103e9c239ec00d505e7ce6153df4f949a9ee8c6f6dfc1d4d684766be12012a730f200000000",
+                        "txid": "c4e39caaccb0b3ac4f0d0b59df0c067b4478b4aee6494ba12dd83a004212e020",
+                        "time": 1607542920,
+                        "blocktime": 1607542920,
+                        "version": 2,
+                        "vin": [
+                            {
+                                "txid": "905707ff83222de93061893e9ef239307f1d68ef49932d9ff7b0482098f58379",
+                                "vout": 1,
+                                "scriptSig": {
+                                    "hex": ""
+                                },
+                                "sequence": 4294967293
+                            }
+                        ],
+                        "vout": [
+                            {
+                                "value": 0.2,
+                                "n": 0,
+                                "scriptPubKey": {
+                                    "hex": "0014691b727701f2e4aec30fe57775a7439ea8d4c8d8"
+                                }
+                            },
+                            {
+                                "value": 4.81586652,
+                                "n": 1,
+                                "scriptPubKey": {
+                                    "hex": "00147a0adbac8308cfef483600e0dd12954dbf1314a1"
+                                }
+                            }
+                        ]
+                    },
+                    {
+                        "hex": "0200000000010120e01242003ad82da14b49e6aeb478447b060cdf590b0d4facb3b0ccaa9ce3c40100000000fdffffff0240420f0000000000160014691b727701f2e4aec30fe57775a7439ea8d4c8d88d25a51c0000000016001463f22c52493943bd1b9e5be92f356cf7262de60b02473044022040e5e7f538c41c05a8b18f583f3d984cb980d08adb53e3586d1c7d5f60fc78b002203615beaae670e862bd1423e17514eda4b0979903165883e015b63779d09391650121029b9d6beb0f70bd2de94c9fb9d27c03a522662e602b0b148325730a11e9b03d1d00000000",
+                        "txid": "4f341d6402c637084c5d5e59b4dd2d57e56d5917028bbbdfb1ab1c467d287071",
+                        "time": 1607542920,
+                        "blocktime": 1607542920,
+                        "version": 2,
+                        "vin": [
+                            {
+                                "txid": "c4e39caaccb0b3ac4f0d0b59df0c067b4478b4aee6494ba12dd83a004212e020",
+                                "vout": 1,
+                                "scriptSig": {
+                                    "hex": ""
+                                },
+                                "sequence": 4294967293
+                            }
+                        ],
+                        "vout": [
+                            {
+                                "value": 0.01,
+                                "n": 0,
+                                "scriptPubKey": {
+                                    "hex": "0014691b727701f2e4aec30fe57775a7439ea8d4c8d8"
+                                }
+                            },
+                            {
+                                "value": 4.80585101,
+                                "n": 1,
+                                "scriptPubKey": {
+                                    "hex": "001463f22c52493943bd1b9e5be92f356cf7262de60b"
+                                }
+                            }
+                        ]
+                    }
+                ]
+            },
+            "15332": {
+                "height": 15332,
+                "hash": "0000014b2d8f7f92dfc3b5093adf50196102dcced82d18e35b4acc2bf70538a2",
+                "noTxs": 3,
+                "txDetails": [
+                    {
+                        "txid": "2905c79019a54257e01fd6689fed30491d83c52fbb6b62ae87eaaa4dfa8341be",
+                        "version": 2,
+                        "vin": [
+                            {
+                                "txid": "e1136349ee7fa69d830eb900aede1fbed47771a1020a6155698fb41322104206",
+                                "vout": 1,
+                                "scriptSig": {
+                                    "hex": ""
+                                },
+                                "sequence": 4294967294
+                            }
+                        ],
+                        "vout": [
+                            {
+                                "value": 0.10006478,
+                                "n": 0,
+                                "scriptPubKey": {
+                                    "hex": "0014d98421601a5b89d841934a6ed669288112af0c6f"
+                                }
+                            },
+                            {
+                                "value": 0.001,
+                                "n": 1,
+                                "scriptPubKey": {
+                                    "hex": "0014aeab6c795903122914f13d7d7d589256e8cd8e09"
+                                }
+                            }
+                        ],
+                        "hex": "02000000000101a1e47c71920956bd0a086ba412e00e0b34439b58a9982b3ff4cb04ad66fff8bd0100000000feffffff0220a1070000000000160014aeab6c795903122914f13d7d7d589256e8cd8e094d773100000000001600143dc77e4488d63a103969edaed7727f771aa62db202473044022047861364d64366ed6c085f054a0f3f9cd0625848fff90d654af77d8c6f84ec3d02201de5167ab2d0326c3b318f72e3386e2427fb6d9136c98660c3bac175947c11250121027da83a3c50bad5cbacd6637fec4387f7cb7e8840252b8eed90461fb49d6c7ed5e33b0000",
+                        "time": 1607530625,
+                        "blocktime": 1607530625
+                    },
+                    {
+                        "txid": "617bdcc537aba2c7e7ec32e47e3fd422471294f508ead8e470b6bad8871e33dd",
+                        "version": 2,
+                        "vin": [
+                            {
+                                "txid": "bdf8ff66ad04cbf43f2b98a9589b43340b0ee012a46b080abd560992717ce4a1",
+                                "vout": 1,
+                                "scriptSig": {
+                                    "hex": ""
+                                },
+                                "sequence": 4294967294
+                            }
+                        ],
+                        "vout": [
+                            {
+                                "value": 0.005,
+                                "n": 0,
+                                "scriptPubKey": {
+                                    "hex": "0014aeab6c795903122914f13d7d7d589256e8cd8e09"
+                                }
+                            },
+                            {
+                                "value": 0.03241805,
+                                "n": 1,
+                                "scriptPubKey": {
+                                    "hex": "00143dc77e4488d63a103969edaed7727f771aa62db2"
+                                }
+                            }
+                        ],
+                        "hex": "02000000000101a1e47c71920956bd0a086ba412e00e0b34439b58a9982b3ff4cb04ad66fff8bd0100000000feffffff0220a1070000000000160014aeab6c795903122914f13d7d7d589256e8cd8e094d773100000000001600143dc77e4488d63a103969edaed7727f771aa62db202473044022047861364d64366ed6c085f054a0f3f9cd0625848fff90d654af77d8c6f84ec3d02201de5167ab2d0326c3b318f72e3386e2427fb6d9136c98660c3bac175947c11250121027da83a3c50bad5cbacd6637fec4387f7cb7e8840252b8eed90461fb49d6c7ed5e33b0000",
+                        "time": 1607530625,
+                        "blocktime": 1607530625
+                    }
+                ]
+            }
+        }
+    },
+    "handleFork": {
+        "syncRanges": [
+            {"lower": 14980, "upper": 15000}
+        ],
+        "fakeBlocks": {
+            "14998": {
+                "height": 14998,
+                "hash": "000000bf050076a4470586bb3c382228f94d43efba8957834f55d0c46f3e1a5f"
+            },
+            "14999": {
+                "height": 14999,
+                "hash": "0000006c5ed1d034aba9ebd08e6427a97ac504af0fd5c9d99d996914e7d014d4"
+            },
+            "15000": {
+                "height": 15000,
+                "hash": "000000c90909c2a8255b746c8b83efcdbe6f0a550b35c50b96648e6f7c2a6d76"
+            }
+        },
+        "realBlocks": {
+            "14998": {
+                "height": 14998,
+                "hash": "000000e3bce7e8d798929652939695f03311ea65db07d440d55eb5b47d56314b"
+            },
+            "14999": {
+                "height": 14999,
+                "hash": "000000baafbf2decb88c88058933c38329a59a8b961fd831e065330124427ec1"
+            },
+            "15000": {
+                "height": 15000,
+                "hash": "0000007ca36d1135444f3b1870de04313d2b458b98cf6075aa364245b3c2ddb9"
+            }
+        }
+    }
+}
--- a/tests/sync/testdata/zcoin.json
+++ b/tests/sync/testdata/zcoin.json
--- a/tests/sync/testdata/trezarcoin.json
+++ b/tests/sync/testdata/trezarcoin.json
@ -0,0 +1,103 @@
+{
+  "connectBlocks": {
+    "syncRanges": [
+      { "lower": 1303776, "upper": 1303796 }
+    ],
+    "blocks": {
+      "1303796": {
+        "hash": "9c22576a9defad9cc5cf27ed479c2175d4eb396d1b7706bfd5066add9b0366d1",
+        "height": 1503796,
+        "noTxs": 1,
+        "txDetails": [
+          {
+            "txid": "c35f4d078ec352096c1f83908f87e4fbb9553f264b0ba139cd7ca82dc060105a",
+            "version": 1,
+            "vin": [
+              {
+                "coinbase": "03f4e41304c9c4745e08810078cef13400007a657267706f6f6c2e636f6d00",
+                "sequence": 0
+              }
+            ],
+            "vout": [
+              {
+                "value": 100.00000000,
+                "n": 0,
+                "scriptPubKey": {
+                  "hex": "21036842117fa1b85649c3e2e84c759387d5670051213c61764e2a5bbf55260c2f3bac"
+                }
+              }
+            ],
+            "hex": "01000000fdc4745e010000000000000000000000000000000000000000000000000000000000000000ffffffff1f03f4e41304c9c4745e08810078cef13400007a657267706f6f6c2e636f6d00000000000100e1f505000000002321036842117fa1b85649c3e2e84c759387d5670051213c61764e2a5bbf55260c2f3bac00000000",
+            "time": 1584710909,
+            "blocktime": 1584710909
+          }
+        ]
+      },
+      "1303793": {
+        "noTxs": 1,
+        "height": 1303793,
+        "hash": "354bbb65711ed4dc62a0277118e40e4c70a6dd16a2eb84e4127e004e241616c0",
+        "txDetails": [
+          {
+            "txid": "3ec26d343d09ee8a43b2c55bbe861302ec4cd42412b145562a4e39ea0a9b3923",
+            "version": 1,
+            "vin": [
+              {
+                "coinbase": "03f1e4130455c4745e088100786e600300007a657267706f6f6c2e636f6d00",
+                "sequence": 0
+              }
+            ],
+            "vout": [
+              {
+                "value": 100.00000000,
+                "n": 0,
+                "scriptPubKey": {
+                  "hex": "21036842117fa1b85649c3e2e84c759387d5670051213c61764e2a5bbf55260c2f3bac"
+                }
+              }
+            ],
+            "hex": "0100000060c4745e010000000000000000000000000000000000000000000000000000000000000000ffffffff1f03f1e4130455c4745e088100786e600300007a657267706f6f6c2e636f6d00000000000100e1f505000000002321036842117fa1b85649c3e2e84c759387d5670051213c61764e2a5bbf55260c2f3bac00000000",
+            "time": 1584710752,
+            "blocktime": 1584710752
+          }
+        ]
+      }
+    }
+  },
+  "handleFork": {
+    "syncRanges": [
+      {
+        "lower": 1303790,
+        "upper": 1303796
+      }
+    ],
+    "fakeBlocks": {
+      "1303794": {
+        "height": 1303794,
+        "hash": "c669716c44eb8ec04ba57210197ec55796f6ca2d84a39aaac37e5609e73a4da1"
+      },
+      "1303795": {
+        "height": 1303795,
+        "hash": "24be474670ce1db3c34c5c4d077aafba14ba6d406023037eb445b3996cbe8bb1"
+      },
+      "1303796": {
+        "height": 1303796,
+        "hash": "8919bab7d23acb214e841ebe24bd7c52b06774abc1ac9d4685c4ef220aed7dde"
+      }
+    },
+    "realBlocks": {
+      "1303794": {
+        "height": 1303794,
+        "hash": "186daaeb62fa64179e95f7d8941102b1f96f71aee8fa83175ddbdb276871a710"
+      },
+      "1303795": {
+        "height": 1303795,
+        "hash": "2e26261bbd964f5f44946a44fb0269802860ab65163a4edb6dd6da54ab9719e0"
+      },
+      "1303796": {
+        "height": 1303796,
+        "hash": "9c22576a9defad9cc5cf27ed479c2175d4eb396d1b7706bfd5066add9b0366d1"
+      }
+    }
+  }
+}
--- a/tests/tests.json
+++ b/tests/tests.json
@ -27,6 +27,11 @@
                 "EstimateSmartFee", "EstimateFee", "GetBestBlockHash", "GetBestBlockHeight", "GetBlockHeader"],
        "sync": ["ConnectBlocksParallel", "ConnectBlocks", "HandleFork"]
    },
+    "bitcoin_signet": {
+        "rpc":  ["GetBlock", "GetBlockHash", "GetTransaction", "GetTransactionForMempool", "MempoolSync",
+                 "EstimateSmartFee", "EstimateFee", "GetBestBlockHash", "GetBestBlockHeight", "GetBlockHeader"],
+        "sync": ["ConnectBlocksParallel", "ConnectBlocks", "HandleFork"]
+    },
    "bitcore": {
        "rpc":  ["GetBlock", "GetBlockHash", "GetTransaction", "GetTransactionForMempool", "MempoolSync",
                "EstimateSmartFee", "EstimateFee", "GetBestBlockHash", "GetBestBlockHeight", "GetBlockHeader"],
@ -157,7 +162,7 @@
            "EstimateSmartFee", "EstimateFee", "GetBestBlockHash", "GetBestBlockHeight", "GetBlockHeader"],
        "sync": ["ConnectBlocksParallel", "ConnectBlocks"]
    },
-    "zcoin": {
+    "firo": {
        "rpc": ["GetBlock", "GetBlockHash", "GetTransaction", "GetTransactionForMempool", "MempoolSync",
                "EstimateFee", "GetBestBlockHash", "GetBestBlockHeight", "GetBlockHeader"],
        "sync": ["ConnectBlocksParallel", "ConnectBlocks", "HandleFork"]
@ -220,5 +225,10 @@
        "rpc": ["GetBlock", "GetBlockHash", "GetTransaction", "GetTransactionForMempool", "MempoolSync",
                "EstimateSmartFee", "EstimateFee", "GetBestBlockHash", "GetBestBlockHeight"],
        "sync": ["ConnectBlocksParallel", "ConnectBlocks"]
+    },
+    "trezarcoin": {
+        "rpc":  ["GetBlock", "GetBlockHash", "GetTransaction", "GetTransactionForMempool", "MempoolSync",
+                 "EstimateFee", "GetBestBlockHash", "GetBestBlockHeight", "GetBlockHeader"],
+        "sync": ["ConnectBlocksParallel", "ConnectBlocks", "HandleFork"]
    }
 }