diff --git a/pkg/ethtypes/hexbytes.go b/pkg/ethtypes/hexbytes.go
index 8b7ac2ef..c2d8fbfc 100644
--- a/pkg/ethtypes/hexbytes.go
+++ b/pkg/ethtypes/hexbytes.go
@@ -1,4 +1,4 @@
-// Copyright © 2022 Kaleido, Inc.
+// Copyright © 2024 Kaleido, Inc.
 //
 // SPDX-License-Identifier: Apache-2.0
 //
@@ -62,6 +62,14 @@ func (h HexBytes0xPrefix) MarshalJSON() ([]byte, error) {
 	return []byte(fmt.Sprintf(`"%s"`, h.String())), nil
 }
 
+func (h HexBytes0xPrefix) Truncate(length int) HexBytes0xPrefix {
+	if length > len(h) {
+		return h
+	}
+
+	return h[:length]
+}
+
 func NewHexBytes0xPrefix(s string) (HexBytes0xPrefix, error) {
 	h, err := hex.DecodeString(strings.TrimPrefix(s, "0x"))
 	if err != nil {
diff --git a/pkg/ethtypes/hexbytes_test.go b/pkg/ethtypes/hexbytes_test.go
index a3f939ce..5c406bdf 100644
--- a/pkg/ethtypes/hexbytes_test.go
+++ b/pkg/ethtypes/hexbytes_test.go
@@ -90,3 +90,38 @@ func TestHexByteConstructors(t *testing.T) {
 		MustNewHexBytes0xPrefix("!wrong")
 	})
 }
+
+func TestHexBytesTruncation(t *testing.T) {
+	testStruct := struct {
+		H1 HexBytes0xPrefix `json:"h1"`
+		H2 HexBytes0xPrefix `json:"h2"`
+		H3 HexBytes0xPrefix `json:"h3"`
+		H4 HexBytes0xPrefix `json:"h4"`
+	}{}
+
+	testData := `{
+		"h1": "0x34d2e4fef9de99a2688148de11174741d1399992f261dcd6ff019211a91eda748dcef26338e992f4df60b8dee3fdd28a",
+		"h2": "0x34d2e4fef9de99a2688148de11174741d1399992f261dcd6ff019211a91eda74",
+		"h3": "0x34d2e4fef9",
+		"h4": "0x34d2e4fef9de99a2688148de11174741d1399992f261dcd6ff019211a91eda748dcef26338e992"
+	}`
+
+	err := json.Unmarshal([]byte(testData), &testStruct)
+	assert.NoError(t, err)
+
+	result := testStruct.H1.Truncate(32)
+	testStruct.H1 = result
+
+	result = testStruct.H2.Truncate(32)
+	testStruct.H2 = result
+
+	result = testStruct.H3.Truncate(32)
+
+	result = testStruct.H4.Truncate(32)
+	testStruct.H4 = result
+
+	assert.Equal(t, "0x34d2e4fef9de99a2688148de11174741d1399992f261dcd6ff019211a91eda74", testStruct.H1.String())
+	assert.Equal(t, "0x34d2e4fef9de99a2688148de11174741d1399992f261dcd6ff019211a91eda74", testStruct.H2.String())
+	assert.Equal(t, "0x34d2e4fef9", testStruct.H3.String())
+	assert.Equal(t, "0x34d2e4fef9de99a2688148de11174741d1399992f261dcd6ff019211a91eda74", testStruct.H4.String())
+}
diff --git a/pkg/ethtypes/hexinteger_test.go b/pkg/ethtypes/hexinteger_test.go
index 097f976a..973fc107 100644
--- a/pkg/ethtypes/hexinteger_test.go
+++ b/pkg/ethtypes/hexinteger_test.go
@@ -1,4 +1,4 @@
-// Copyright © 2022 Kaleido, Inc.
+// Copyright © 2024 Kaleido, Inc.
 //
 // SPDX-License-Identifier: Apache-2.0
 //