diff --git a/common/word.go b/common/word.go
index 7c5c8a81a..1b62f0640 100644
--- a/common/word.go
+++ b/common/word.go
@@ -31,7 +31,10 @@ func (w Word256) Compare(other Word256) int {
 
 func Uint64ToWord256(i uint64) Word256 {
 	word := Word256{}
-	PutUint64(word[:], i)
+	buf := [8]byte{}
+	PutUint64(buf[:], i)
+	word[24], word[25], word[26], word[27] = buf[7], buf[6], buf[5], buf[4]
+	word[28], word[29], word[30], word[31] = buf[3], buf[2], buf[1], buf[0]
 	return word
 }
 
@@ -46,7 +49,10 @@ func LeftPadWord256(bz []byte) (word Word256) {
 }
 
 func Uint64FromWord256(word Word256) uint64 {
-	return binary.LittleEndian.Uint64(word[:])
+	buf := [8]byte{}
+	buf[0], buf[1], buf[2], buf[3] = word[31], word[30], word[29], word[28]
+	buf[4], buf[5], buf[6], buf[7] = word[27], word[26], word[25], word[24]
+	return binary.LittleEndian.Uint64(buf[:])
 }
 
 //-------------------------------------
diff --git a/rpc/core/accounts.go b/rpc/core/accounts.go
index b6206fd9e..ba43673a0 100644
--- a/rpc/core/accounts.go
+++ b/rpc/core/accounts.go
@@ -36,7 +36,7 @@ func GetStorage(address, key []byte) (*ctypes.ResponseGetStorage, error) {
 	storageRoot := account.StorageRoot
 	storageTree := state.LoadStorage(storageRoot)
 
-	_, value := storageTree.Get(RightPadWord256(key).Bytes())
+	_, value := storageTree.Get(LeftPadWord256(key).Bytes())
 	if value == nil {
 		return &ctypes.ResponseGetStorage{key, nil}, nil
 	}
diff --git a/rpc/core/txs.go b/rpc/core/txs.go
index 628bc6584..82ff13ef4 100644
--- a/rpc/core/txs.go
+++ b/rpc/core/txs.go
@@ -12,11 +12,11 @@ import (
 
 func toVMAccount(acc *account.Account) *vm.Account {
 	return &vm.Account{
-		Address:     RightPadWord256(acc.Address),
+		Address:     LeftPadWord256(acc.Address),
 		Balance:     acc.Balance,
 		Code:        acc.Code, // This is crazy.
 		Nonce:       uint64(acc.Sequence),
-		StorageRoot: RightPadWord256(acc.StorageRoot),
+		StorageRoot: LeftPadWord256(acc.StorageRoot),
 		Other:       acc.PubKey,
 	}
 }
@@ -26,7 +26,6 @@ func toVMAccount(acc *account.Account) *vm.Account {
 // Run a contract's code on an isolated and unpersisted state
 // Cannot be used to create new contracts
 func Call(address, data []byte) (*ctypes.ResponseCall, error) {
-
 	st := consensusState.GetState() // performs a copy
 	cache := mempoolReactor.Mempool.GetCache()
 	outAcc := cache.GetAccount(address)
@@ -38,7 +37,7 @@ func Call(address, data []byte) (*ctypes.ResponseCall, error) {
 	txCache := state.NewTxCache(cache)
 	params := vm.Params{
 		BlockHeight: uint64(st.LastBlockHeight),
-		BlockHash:   RightPadWord256(st.LastBlockHash),
+		BlockHash:   LeftPadWord256(st.LastBlockHash),
 		BlockTime:   st.LastBlockTime.Unix(),
 		GasLimit:    10000000,
 	}
@@ -63,7 +62,7 @@ func CallCode(code, data []byte) (*ctypes.ResponseCall, error) {
 	txCache := state.NewTxCache(cache)
 	params := vm.Params{
 		BlockHeight: uint64(st.LastBlockHeight),
-		BlockHash:   RightPadWord256(st.LastBlockHash),
+		BlockHash:   LeftPadWord256(st.LastBlockHash),
 		BlockTime:   st.LastBlockTime.Unix(),
 		GasLimit:    10000000,
 	}
diff --git a/rpc/test/helpers_test.go b/rpc/test/helpers_test.go
index 7755277cc..07f05a6f2 100644
--- a/rpc/test/helpers_test.go
+++ b/rpc/test/helpers_test.go
@@ -288,7 +288,7 @@ func simpleContract() ([]byte, []byte, []byte) {
 	// the is the code we need to return the contractCode when the contract is initialized
 	lenCode := len(contractCode)
 	// push code to the stack
-	//code := append([]byte{byte(0x60 + lenCode - 1)}, LeftPadWord256(contractCode).Bytes()...)
+	//code := append([]byte{byte(0x60 + lenCode - 1)}, RightPadWord256(contractCode).Bytes()...)
 	code := append([]byte{0x7f}, RightPadWord256(contractCode).Bytes()...)
 	// store it in memory
 	code = append(code, []byte{0x60, 0x0, 0x52}...)
diff --git a/rpc/test/tests_test.go b/rpc/test/tests_test.go
index f95a42d4b..311505d0e 100644
--- a/rpc/test/tests_test.go
+++ b/rpc/test/tests_test.go
@@ -119,8 +119,8 @@ func testGetStorage(t *testing.T, typ string) {
 	mempoolCount = 0
 
 	v := getStorage(t, typ, contractAddr, []byte{0x1})
-	got := RightPadWord256(v)
-	expected := RightPadWord256([]byte{0x5})
+	got := LeftPadWord256(v)
+	expected := LeftPadWord256([]byte{0x5})
 	if got.Compare(expected) != 0 {
 		t.Fatalf("Wrong storage value. Got %x, expected %x", got.Bytes(), expected.Bytes())
 	}
diff --git a/state/block_cache.go b/state/block_cache.go
index 277754541..2eda83fa9 100644
--- a/state/block_cache.go
+++ b/state/block_cache.go
@@ -106,7 +106,7 @@ func (cache *BlockCache) GetStorage(addr Word256, key Word256) (value Word256) {
 	_, val_ := storage.Get(key.Bytes())
 	value = Zero256
 	if val_ != nil {
-		value = RightPadWord256(val_.([]byte))
+		value = LeftPadWord256(val_.([]byte))
 	}
 	cache.storages[Tuple256{addr, key}] = storageInfo{value, false}
 	return value
diff --git a/state/execution.go b/state/execution.go
index 5152b16f8..cf2843dbf 100644
--- a/state/execution.go
+++ b/state/execution.go
@@ -395,7 +395,7 @@ func ExecTx(blockCache *BlockCache, tx_ types.Tx, runCall bool, evc events.Firea
 				txCache             = NewTxCache(blockCache)
 				params              = vm.Params{
 					BlockHeight: uint64(_s.LastBlockHeight),
-					BlockHash:   RightPadWord256(_s.LastBlockHash),
+					BlockHash:   LeftPadWord256(_s.LastBlockHash),
 					BlockTime:   _s.LastBlockTime.Unix(),
 					GasLimit:    10000000,
 				}
diff --git a/state/tx_cache.go b/state/tx_cache.go
index d5a23d6c2..d181e0472 100644
--- a/state/tx_cache.go
+++ b/state/tx_cache.go
@@ -158,7 +158,7 @@ func toVMAccount(acc *ac.Account) *vm.Account {
 		Balance:     acc.Balance,
 		Code:        acc.Code, // This is crazy.
 		Nonce:       uint64(acc.Sequence),
-		StorageRoot: RightPadWord256(acc.StorageRoot),
+		StorageRoot: LeftPadWord256(acc.StorageRoot),
 		Other:       acc.PubKey,
 	}
 }
diff --git a/vm/native.go b/vm/native.go
index ad9f3f3ae..07621b92d 100644
--- a/vm/native.go
+++ b/vm/native.go
@@ -39,7 +39,7 @@ func ecrecoverFunc(input []byte, gas *uint64) (output []byte, err error) {
 		return nil, err
 	}
 	hashed := sha3.Sha3(recovered[1:])
-	return RightPadBytes(hashed, 32), nil
+	return LeftPadBytes(hashed, 32), nil
 }
 
 func sha256Func(input []byte, gas *uint64) (output []byte, err error) {
@@ -73,7 +73,7 @@ func ripemd160Func(input []byte, gas *uint64) (output []byte, err error) {
 	if err != nil {
 		panic(err)
 	}
-	return RightPadBytes(hasher.Sum(nil), 32), nil
+	return LeftPadBytes(hasher.Sum(nil), 32), nil
 }
 
 func identityFunc(input []byte, gas *uint64) (output []byte, err error) {
diff --git a/vm/stack.go b/vm/stack.go
index 41d50c702..17938d2c5 100644
--- a/vm/stack.go
+++ b/vm/stack.go
@@ -51,7 +51,7 @@ func (st *Stack) PushBytes(bz []byte) {
 	if len(bz) != 32 {
 		panic("Invalid bytes size: expected 32")
 	}
-	st.Push(RightPadWord256(bz))
+	st.Push(LeftPadWord256(bz))
 }
 
 func (st *Stack) Push64(i uint64) {
@@ -73,7 +73,8 @@ func (st *Stack) PopBytes() []byte {
 }
 
 func (st *Stack) Pop64() uint64 {
-	return GetUint64(st.Pop().Bytes())
+	d := st.Pop()
+	return Uint64FromWord256(d)
 }
 
 func (st *Stack) Len() int {
diff --git a/vm/test/fake_app_state.go b/vm/test/fake_app_state.go
index 3d6f5ca22..456e3b3c9 100644
--- a/vm/test/fake_app_state.go
+++ b/vm/test/fake_app_state.go
@@ -90,5 +90,5 @@ func createAddress(creator *Account) Word256 {
 	temp := make([]byte, 32+8)
 	copy(temp, creator.Address[:])
 	PutUint64(temp[32:], nonce)
-	return RightPadWord256(sha3.Sha3(temp)[:20])
+	return LeftPadWord256(sha3.Sha3(temp)[:20])
 }
diff --git a/vm/test/vm_test.go b/vm/test/vm_test.go
index 740d0063a..ef9d88343 100644
--- a/vm/test/vm_test.go
+++ b/vm/test/vm_test.go
@@ -64,10 +64,10 @@ func TestSubcurrency(t *testing.T) {
 	st := newAppState()
 	// Create accounts
 	account1 := &Account{
-		Address: RightPadWord256(makeBytes(20)),
+		Address: LeftPadWord256(makeBytes(20)),
 	}
 	account2 := &Account{
-		Address: RightPadWord256(makeBytes(20)),
+		Address: LeftPadWord256(makeBytes(20)),
 	}
 	st.accounts[account1.Address.String()] = account1
 	st.accounts[account2.Address.String()] = account2