diff --git a/app/app.go b/app/app.go
index 27f31950d4..fa99458e6d 100644
--- a/app/app.go
+++ b/app/app.go
@@ -34,6 +34,8 @@ type Basecoin struct {
 	logger     log.Logger
 }
 
+var _ abci.Application = &Basecoin{}
+
 // NewBasecoin - create a new instance of the basecoin application
 func NewBasecoin(handler basecoin.Handler, eyesCli *eyes.Client, logger log.Logger) *Basecoin {
 	state := sm.NewState(eyesCli, logger.With("module", "state"))
diff --git a/cmd/basecoin/commands/utils.go b/cmd/basecoin/commands/utils.go
deleted file mode 100644
index 8df68faac1..0000000000
--- a/cmd/basecoin/commands/utils.go
+++ /dev/null
@@ -1,23 +0,0 @@
-package commands
-
-import "encoding/hex"
-
-// Returns true for non-empty hex-string prefixed with "0x"
-func isHex(s string) bool {
-	if len(s) > 2 && s[:2] == "0x" {
-		_, err := hex.DecodeString(s[2:])
-		if err != nil {
-			return false
-		}
-		return true
-	}
-	return false
-}
-
-// StripHex remove the first two hex bytes
-func StripHex(s string) string {
-	if isHex(s) {
-		return s[2:]
-	}
-	return s
-}
diff --git a/cmd/basecoin/commands/utils_test.go b/cmd/basecoin/commands/utils_test.go
deleted file mode 100644
index 692fec7433..0000000000
--- a/cmd/basecoin/commands/utils_test.go
+++ /dev/null
@@ -1,24 +0,0 @@
-package commands
-
-import (
-	"encoding/hex"
-	"testing"
-
-	"github.com/stretchr/testify/assert"
-)
-
-func TestHex(t *testing.T) {
-	assert := assert.New(t)
-
-	//test isHex
-	hexNoPrefix := hex.EncodeToString([]byte("foobar"))
-	hexWPrefix := "0x" + hexNoPrefix
-	str := "foobar"
-	strWPrefix := "0xfoobar"
-
-	assert.True(isHex(hexWPrefix), "isHex not identifying hex with 0x prefix")
-	assert.False(isHex(hexNoPrefix), "isHex shouldn't identify hex without 0x prefix")
-	assert.False(isHex(str), "isHex shouldn't identify non-hex string")
-	assert.False(isHex(strWPrefix), "isHex shouldn't identify non-hex string with 0x prefix")
-	assert.True(StripHex(hexWPrefix) == hexNoPrefix, "StripHex doesn't remove first two characters")
-}
diff --git a/modules/auth/tx.go b/modules/auth/tx.go
index 71d660ad4e..26e2b94b68 100644
--- a/modules/auth/tx.go
+++ b/modules/auth/tx.go
@@ -63,7 +63,6 @@ type OneSig struct {
 	Signed `json:"signature"`
 }
 
-//Interfaces to fulfill
 var _ keys.Signable = &OneSig{}
 var _ basecoin.TxLayer = &OneSig{}
 
@@ -135,7 +134,6 @@ type MultiSig struct {
 	Sigs []Signed    `json:"signatures"`
 }
 
-//Interfaces to fulfill
 var _ keys.Signable = &MultiSig{}
 var _ basecoin.TxLayer = &MultiSig{}
 
diff --git a/modules/base/tx.go b/modules/base/tx.go
index 95c9299523..b4f2cd2b78 100644
--- a/modules/base/tx.go
+++ b/modules/base/tx.go
@@ -21,10 +21,6 @@ func init() {
 		RegisterImplementation(ChainTx{}, TypeChainTx, ByteChainTx)
 }
 
-//Interfaces to fulfill
-var _ basecoin.TxInner = &MultiTx{}
-var _ basecoin.TxInner = &ChainTx{}
-
 /**** MultiTx  ******/
 
 // MultiTx - a transaction containing multiple transactions
@@ -32,6 +28,8 @@ type MultiTx struct {
 	Txs []basecoin.Tx `json:"txs"`
 }
 
+var _ basecoin.TxInner = &MultiTx{}
+
 //nolint - TxInner Functions
 func NewMultiTx(txs ...basecoin.Tx) basecoin.Tx {
 	return (MultiTx{Txs: txs}).Wrap()
@@ -57,6 +55,8 @@ type ChainTx struct {
 	ChainID string      `json:"chain_id"`
 }
 
+var _ basecoin.TxInner = &ChainTx{}
+
 //nolint - TxInner Functions
 func NewChainTx(chainID string, tx basecoin.Tx) basecoin.Tx {
 	return (ChainTx{Tx: tx, ChainID: chainID}).Wrap()