diff --git a/pkg/core/native/management.go b/pkg/core/native/management.go
index ef5a5361c..8fef66d93 100644
--- a/pkg/core/native/management.go
+++ b/pkg/core/native/management.go
@@ -64,7 +64,7 @@ func newManagement() *Management {
 	}
 
 	desc := newDescriptor("getContract", smartcontract.ArrayType,
-		manifest.NewParameter("hash", smartcontract.Hash160Type))
+		manifest.NewParameter("hash", smartcontract.ByteArrayType))
 	md := newMethodAndPrice(m.getContract, 1000000, smartcontract.ReadStates)
 	m.AddMethod(md, desc)
 
diff --git a/pkg/core/native/native_neo.go b/pkg/core/native/native_neo.go
index 739264680..88cd18e05 100644
--- a/pkg/core/native/native_neo.go
+++ b/pkg/core/native/native_neo.go
@@ -108,24 +108,24 @@ func newNEO() *NEO {
 	n.committeeHash.Store(util.Uint160{})
 
 	desc := newDescriptor("unclaimedGas", smartcontract.IntegerType,
-		manifest.NewParameter("account", smartcontract.Hash160Type),
+		manifest.NewParameter("account", smartcontract.ByteArrayType),
 		manifest.NewParameter("end", smartcontract.IntegerType))
 	md := newMethodAndPrice(n.unclaimedGas, 3000000, smartcontract.ReadStates)
 	n.AddMethod(md, desc)
 
 	desc = newDescriptor("registerCandidate", smartcontract.BoolType,
-		manifest.NewParameter("pubkey", smartcontract.PublicKeyType))
+		manifest.NewParameter("pubkey", smartcontract.ByteArrayType))
 	md = newMethodAndPrice(n.registerCandidate, 5000000, smartcontract.WriteStates)
 	n.AddMethod(md, desc)
 
 	desc = newDescriptor("unregisterCandidate", smartcontract.BoolType,
-		manifest.NewParameter("pubkey", smartcontract.PublicKeyType))
+		manifest.NewParameter("pubkey", smartcontract.ByteArrayType))
 	md = newMethodAndPrice(n.unregisterCandidate, 5000000, smartcontract.WriteStates)
 	n.AddMethod(md, desc)
 
 	desc = newDescriptor("vote", smartcontract.BoolType,
-		manifest.NewParameter("account", smartcontract.Hash160Type),
-		manifest.NewParameter("pubkey", smartcontract.PublicKeyType))
+		manifest.NewParameter("account", smartcontract.ByteArrayType),
+		manifest.NewParameter("pubkey", smartcontract.ByteArrayType))
 	md = newMethodAndPrice(n.vote, 5000000, smartcontract.WriteStates)
 	n.AddMethod(md, desc)
 
diff --git a/pkg/core/native/native_nep17.go b/pkg/core/native/native_nep17.go
index cfb2cf7cd..cf23f2549 100644
--- a/pkg/core/native/native_nep17.go
+++ b/pkg/core/native/native_nep17.go
@@ -59,22 +59,23 @@ func newNEP17Native(name string) *nep17TokenNative {
 	n.AddMethod(md, desc)
 
 	desc = newDescriptor("balanceOf", smartcontract.IntegerType,
-		manifest.NewParameter("account", smartcontract.Hash160Type))
+		manifest.NewParameter("account", smartcontract.ByteArrayType))
 	md = newMethodAndPrice(n.balanceOf, 1000000, smartcontract.ReadStates)
 	n.AddMethod(md, desc)
 
-	transferParams := []manifest.Parameter{
-		manifest.NewParameter("from", smartcontract.Hash160Type),
-		manifest.NewParameter("to", smartcontract.Hash160Type),
-		manifest.NewParameter("amount", smartcontract.IntegerType),
-	}
 	desc = newDescriptor("transfer", smartcontract.BoolType,
-		append(transferParams, manifest.NewParameter("data", smartcontract.AnyType))...,
+		manifest.NewParameter("from", smartcontract.ByteArrayType),
+		manifest.NewParameter("to", smartcontract.ByteArrayType),
+		manifest.NewParameter("amount", smartcontract.IntegerType),
+		manifest.NewParameter("data", smartcontract.AnyType),
 	)
 	md = newMethodAndPrice(n.Transfer, 9000000, smartcontract.WriteStates|smartcontract.AllowCall|smartcontract.AllowNotify)
 	n.AddMethod(md, desc)
 
-	n.AddEvent("Transfer", transferParams...)
+	n.AddEvent("Transfer",
+		manifest.NewParameter("from", smartcontract.Hash160Type),
+		manifest.NewParameter("to", smartcontract.Hash160Type),
+		manifest.NewParameter("amount", smartcontract.IntegerType))
 
 	return n
 }
diff --git a/pkg/core/native/policy.go b/pkg/core/native/policy.go
index 3c7411315..90f4ced7b 100644
--- a/pkg/core/native/policy.go
+++ b/pkg/core/native/policy.go
@@ -97,7 +97,7 @@ func newPolicy() *Policy {
 	p.AddMethod(md, desc)
 
 	desc = newDescriptor("isBlocked", smartcontract.BoolType,
-		manifest.NewParameter("account", smartcontract.Hash160Type))
+		manifest.NewParameter("account", smartcontract.ByteArrayType))
 	md = newMethodAndPrice(p.isBlocked, 1000000, smartcontract.ReadStates)
 	p.AddMethod(md, desc)
 
@@ -144,12 +144,12 @@ func newPolicy() *Policy {
 	p.AddMethod(md, desc)
 
 	desc = newDescriptor("blockAccount", smartcontract.BoolType,
-		manifest.NewParameter("account", smartcontract.Hash160Type))
+		manifest.NewParameter("account", smartcontract.ByteArrayType))
 	md = newMethodAndPrice(p.blockAccount, 3000000, smartcontract.WriteStates)
 	p.AddMethod(md, desc)
 
 	desc = newDescriptor("unblockAccount", smartcontract.BoolType,
-		manifest.NewParameter("account", smartcontract.Hash160Type))
+		manifest.NewParameter("account", smartcontract.ByteArrayType))
 	md = newMethodAndPrice(p.unblockAccount, 3000000, smartcontract.WriteStates)
 	p.AddMethod(md, desc)