diff --git a/bchain/coins/bch/bcashparser.go b/bchain/coins/bch/bcashparser.go
index f940c8081a..3a732f85ab 100644
--- a/bchain/coins/bch/bcashparser.go
+++ b/bchain/coins/bch/bcashparser.go
@@ -12,22 +12,31 @@ import (
 	"github.com/schancel/cashaddr-converter/address"
 )
 
+// AddressFormat type is used to specify different formats of address
 type AddressFormat = uint8
 
 const (
+	// Legacy AddressFormat is the same as Bitcoin
 	Legacy AddressFormat = iota
+	// CashAddr AddressFormat is new Bitcoin Cash standard
 	CashAddr
 )
 
 const (
+	// MainNetPrefix is CashAddr prefix for mainnet
 	MainNetPrefix = "bitcoincash:"
+	// TestNetPrefix is CashAddr prefix for testnet
 	TestNetPrefix = "bchtest:"
+	// RegTestPrefix is CashAddr prefix for regtest
 	RegTestPrefix = "bchreg:"
 )
 
 var (
+	// MainNetParams are parser parameters for mainnet
 	MainNetParams chaincfg.Params
+	// TestNetParams are parser parameters for testnet
 	TestNetParams chaincfg.Params
+	// RegtestParams are parser parameters for regtest
 	RegtestParams chaincfg.Params
 )
 
@@ -118,17 +127,16 @@ func (p *BCashParser) addressToOutputScript(address string) ([]byte, error) {
 			return nil, err
 		}
 		return script, nil
-	} else {
-		da, err := btcutil.DecodeAddress(address, p.Params)
-		if err != nil {
-			return nil, err
-		}
-		script, err := txscript.PayToAddrScript(da)
-		if err != nil {
-			return nil, err
-		}
-		return script, nil
 	}
+	da, err := btcutil.DecodeAddress(address, p.Params)
+	if err != nil {
+		return nil, err
+	}
+	script, err := txscript.PayToAddrScript(da)
+	if err != nil {
+		return nil, err
+	}
+	return script, nil
 }
 
 func isCashAddr(addr string) bool {
@@ -163,9 +171,8 @@ func (p *BCashParser) outputScriptToAddresses(script []byte) ([]string, bool, er
 				return []string{or}, false, nil
 			}
 			return []string{}, false, nil
-		} else {
-			return nil, false, err
 		}
+		return nil, false, err
 	}
 	// EncodeAddress returns CashAddr address
 	addr := a.EncodeAddress()
diff --git a/bchain/coins/dash/dashparser.go b/bchain/coins/dash/dashparser.go
index 9d4d4d4f97..57e06f726b 100644
--- a/bchain/coins/dash/dashparser.go
+++ b/bchain/coins/dash/dashparser.go
@@ -9,14 +9,20 @@ import (
 )
 
 const (
+	// MainnetMagic is mainnet network constant
 	MainnetMagic wire.BitcoinNet = 0xbd6b0cbf
+	// TestnetMagic is testnet network constant
 	TestnetMagic wire.BitcoinNet = 0xffcae2ce
+	// RegtestMagic is regtest network constant
 	RegtestMagic wire.BitcoinNet = 0xdcb7c1fc
 )
 
 var (
+	// MainNetParams are parser parameters for mainnet
 	MainNetParams chaincfg.Params
+	// TestNetParams are parser parameters for testnet
 	TestNetParams chaincfg.Params
+	// RegtestParams are parser parameters for regtest
 	RegtestParams chaincfg.Params
 )
 
diff --git a/bchain/coins/dash/dashrpc.go b/bchain/coins/dash/dashrpc.go
index a2aea6ba16..66629d79cc 100644
--- a/bchain/coins/dash/dashrpc.go
+++ b/bchain/coins/dash/dashrpc.go
@@ -11,12 +11,12 @@ import (
 
 const firstBlockWithSpecialTransactions = 1028160
 
-// DashRPC is an interface to JSON-RPC bitcoind service.
+// DashRPC is an interface to JSON-RPC bitcoind service
 type DashRPC struct {
 	*btc.BitcoinRPC
 }
 
-// NewDashRPC returns new DashRPC instance.
+// NewDashRPC returns new DashRPC instance
 func NewDashRPC(config json.RawMessage, pushHandler func(bchain.NotificationType)) (bchain.BlockChain, error) {
 	b, err := btc.NewBitcoinRPC(config, pushHandler)
 	if err != nil {
@@ -58,7 +58,7 @@ func (b *DashRPC) Initialize() error {
 	return nil
 }
 
-// GetBlock returns block with given hash.
+// GetBlock returns block with given hash
 func (b *DashRPC) GetBlock(hash string, height uint32) (*bchain.Block, error) {
 	if hash == "" && height < firstBlockWithSpecialTransactions {
 		return b.BitcoinRPC.GetBlock(hash, height)
@@ -108,6 +108,6 @@ func (b *DashRPC) GetBlock(hash string, height uint32) (*bchain.Block, error) {
 
 // GetTransactionForMempool returns a transaction by the transaction ID.
 // It could be optimized for mempool, i.e. without block time and confirmations
-func (z *DashRPC) GetTransactionForMempool(txid string) (*bchain.Tx, error) {
-	return z.GetTransaction(txid)
+func (b *DashRPC) GetTransactionForMempool(txid string) (*bchain.Tx, error) {
+	return b.GetTransaction(txid)
 }
diff --git a/bchain/coins/zec/zcashparser.go b/bchain/coins/zec/zcashparser.go
index 1a1ed72bb1..3c0e58176f 100644
--- a/bchain/coins/zec/zcashparser.go
+++ b/bchain/coins/zec/zcashparser.go
@@ -9,14 +9,20 @@ import (
 )
 
 const (
+	// MainnetMagic is mainnet network constant
 	MainnetMagic wire.BitcoinNet = 0x6427e924
+	// TestnetMagic is testnet network constant
 	TestnetMagic wire.BitcoinNet = 0xbff91afa
+	// RegtestMagic is regtest network constant
 	RegtestMagic wire.BitcoinNet = 0x5f3fe8aa
 )
 
 var (
+	// MainNetParams are parser parameters for mainnet
 	MainNetParams chaincfg.Params
+	// TestNetParams are parser parameters for testnet
 	TestNetParams chaincfg.Params
+	// RegtestParams are parser parameters for regtest
 	RegtestParams chaincfg.Params
 )
 
diff --git a/bchain/coins/zec/zcashrpc.go b/bchain/coins/zec/zcashrpc.go
index fa956f1e75..3ecffea3c4 100644
--- a/bchain/coins/zec/zcashrpc.go
+++ b/bchain/coins/zec/zcashrpc.go
@@ -9,10 +9,12 @@ import (
 	"github.com/juju/errors"
 )
 
+// ZCashRPC is an interface to JSON-RPC bitcoind service
 type ZCashRPC struct {
 	*btc.BitcoinRPC
 }
 
+// NewZCashRPC returns new ZCashRPC instance
 func NewZCashRPC(config json.RawMessage, pushHandler func(bchain.NotificationType)) (bchain.BlockChain, error) {
 	b, err := btc.NewBitcoinRPC(config, pushHandler)
 	if err != nil {
@@ -26,7 +28,7 @@ func NewZCashRPC(config json.RawMessage, pushHandler func(bchain.NotificationTyp
 	return z, nil
 }
 
-// Initialize initializes ZCashRPC instance.
+// Initialize initializes ZCashRPC instance
 func (z *ZCashRPC) Initialize() error {
 	chainName, err := z.GetChainInfoAndInitializeMempool(z)
 	if err != nil {