diff --git a/x/model/types/errors.go b/x/model/types/errors.go
index 36771c8d5..2fdb81c59 100644
--- a/x/model/types/errors.go
+++ b/x/model/types/errors.go
@@ -29,6 +29,7 @@ var (
 	ErrModelDeletionCertified             = errors.Register(ModuleName, 525, "model has a model version that has a compliance record and  correcponding model can not be deleted")
 	ErrFieldIsNotBase64Encoded            = errors.Register(ModuleName, 526, "Field is not base64 encoded string")
 	ErrEnhancedSetupFlowTCRevisionInvalid = errors.Register(ModuleName, 527, "enhanced setup flow TC revision invalid")
+	ErrOtaChecksumTypeInvalid             = errors.Register(ModuleName, 528, "OTA checksum type is not valid")
 )
 
 func NewErrModelAlreadyExists(vid interface{}, pid interface{}) error {
@@ -149,3 +150,9 @@ func NewErrEnhancedSetupFlowTCRevisionInvalidIncrement(newEnhancedSetupFlowTCRev
 	return errors.Wrapf(ErrEnhancedSetupFlowTCRevisionInvalid,
 		"EnhancedSetupFlowTCRevision %v is not correctly incremented to %v", prevEnhancedSetupFlowTCRevision, newEnhancedSetupFlowTCRevision)
 }
+
+func NewErrOtaChecksumTypeInvalid(otaChecksumType int32) error {
+	return errors.Wrapf(ErrOtaChecksumTypeInvalid,
+		"OtaChecksumType %v is not valid. Must be one of [1, 7, 8, 10, 11, 12] per IANA Named Information Hash Algorithm Registry",
+		otaChecksumType)
+}
diff --git a/x/model/types/messages_model_version.go b/x/model/types/messages_model_version.go
index 55afc74a8..cd46145a9 100644
--- a/x/model/types/messages_model_version.go
+++ b/x/model/types/messages_model_version.go
@@ -80,6 +80,19 @@ func (msg *MsgCreateModelVersion) GetSignBytes() []byte {
 	return sdk.MustSortJSON(bz)
 }
 
+var ValidOtaChecksumTypes = map[int32]bool{
+	1:  true, // sha-256
+	7:  true, // sha-384
+	8:  true, // sha-512
+	10: true, // sha3-256
+	11: true, // sha3-384
+	12: true, // sha3-512
+}
+
+func IsValidOtaChecksumType(checksumType int32) bool {
+	return ValidOtaChecksumTypes[checksumType]
+}
+
 func (msg *MsgCreateModelVersion) ValidateBasic() error {
 	_, err := sdk.AccAddressFromBech32(msg.Creator)
 	if err != nil {
@@ -91,6 +104,10 @@ func (msg *MsgCreateModelVersion) ValidateBasic() error {
 		return NewErrOtaChecksumIsNotBase64Encoded(msg.OtaChecksum)
 	}
 
+	if msg.OtaUrl != "" && !IsValidOtaChecksumType(msg.OtaChecksumType) {
+		return NewErrOtaChecksumTypeInvalid(msg.OtaChecksumType)
+	}
+
 	err = validator.Validate(msg)
 	if err != nil {
 		return err
diff --git a/x/model/types/messages_model_version_test.go b/x/model/types/messages_model_version_test.go
index fdf310be1..39621cecf 100644
--- a/x/model/types/messages_model_version_test.go
+++ b/x/model/types/messages_model_version_test.go
@@ -208,25 +208,67 @@ func TestMsgCreateModelVersion_ValidateBasic(t *testing.T) {
 
 				return msg
 			}(validMsgCreateModelVersion()),
-			err: validator.ErrRequiredFieldMissing,
+			err: ErrOtaChecksumTypeInvalid,
 		},
 		{
-			name: "OtaChecksumType < 0",
+			name: "OtaChecksumType < 0 when OtaUrl is set",
 			msg: func(msg *MsgCreateModelVersion) *MsgCreateModelVersion {
+				msg.OtaUrl = "https://sampleflowurl.dclmodel"
 				msg.OtaChecksumType = -1
 
 				return msg
 			}(validMsgCreateModelVersion()),
-			err: validator.ErrFieldLowerBoundViolated,
+			err: ErrOtaChecksumTypeInvalid,
 		},
 		{
-			name: "OtaChecksumType > 65535",
+			name: "OtaChecksumType > 65535 when OtaUrl is set",
 			msg: func(msg *MsgCreateModelVersion) *MsgCreateModelVersion {
+				msg.OtaUrl = "https://sampleflowurl.dclmodel"
 				msg.OtaChecksumType = 65536
 
 				return msg
 			}(validMsgCreateModelVersion()),
-			err: validator.ErrFieldUpperBoundViolated,
+			err: ErrOtaChecksumTypeInvalid,
+		},
+		{
+			name: "OtaChecksumType == 2 is not in allowed list when OtaUrl is set",
+			msg: func(msg *MsgCreateModelVersion) *MsgCreateModelVersion {
+				msg.OtaUrl = "https://sampleflowurl.dclmodel"
+				msg.OtaChecksumType = 2
+
+				return msg
+			}(validMsgCreateModelVersion()),
+			err: ErrOtaChecksumTypeInvalid,
+		},
+		{
+			name: "OtaChecksumType == 3 is not in allowed list when OtaUrl is set",
+			msg: func(msg *MsgCreateModelVersion) *MsgCreateModelVersion {
+				msg.OtaUrl = "https://sampleflowurl.dclmodel"
+				msg.OtaChecksumType = 3
+
+				return msg
+			}(validMsgCreateModelVersion()),
+			err: ErrOtaChecksumTypeInvalid,
+		},
+		{
+			name: "OtaChecksumType == 9 is not in allowed list when OtaUrl is set",
+			msg: func(msg *MsgCreateModelVersion) *MsgCreateModelVersion {
+				msg.OtaUrl = "https://sampleflowurl.dclmodel"
+				msg.OtaChecksumType = 9
+
+				return msg
+			}(validMsgCreateModelVersion()),
+			err: ErrOtaChecksumTypeInvalid,
+		},
+		{
+			name: "OtaChecksumType == 100 is not in allowed list when OtaUrl is set",
+			msg: func(msg *MsgCreateModelVersion) *MsgCreateModelVersion {
+				msg.OtaUrl = "https://sampleflowurl.dclmodel"
+				msg.OtaChecksumType = 100
+
+				return msg
+			}(validMsgCreateModelVersion()),
+			err: ErrOtaChecksumTypeInvalid,
 		},
 		{
 			name: "MinApplicableSoftwareVersion > MaxApplicableSoftwareVersion " +
@@ -488,17 +530,55 @@ func TestMsgCreateModelVersion_ValidateBasic(t *testing.T) {
 			}(validMsgCreateModelVersion()),
 		},
 		{
-			name: "OtaChecksumType == 1",
+			name: "OtaChecksumType == 1 (sha-256)",
 			msg: func(msg *MsgCreateModelVersion) *MsgCreateModelVersion {
+				msg.OtaUrl = "https://sampleflowurl.dclmodel"
 				msg.OtaChecksumType = 1
 
 				return msg
 			}(validMsgCreateModelVersion()),
 		},
 		{
-			name: "OtaChecksumType == 65535",
+			name: "OtaChecksumType == 7 (sha-384)",
+			msg: func(msg *MsgCreateModelVersion) *MsgCreateModelVersion {
+				msg.OtaUrl = "https://sampleflowurl.dclmodel"
+				msg.OtaChecksumType = 7
+
+				return msg
+			}(validMsgCreateModelVersion()),
+		},
+		{
+			name: "OtaChecksumType == 8 (sha-512)",
+			msg: func(msg *MsgCreateModelVersion) *MsgCreateModelVersion {
+				msg.OtaUrl = "https://sampleflowurl.dclmodel"
+				msg.OtaChecksumType = 8
+
+				return msg
+			}(validMsgCreateModelVersion()),
+		},
+		{
+			name: "OtaChecksumType == 10 (sha3-256)",
 			msg: func(msg *MsgCreateModelVersion) *MsgCreateModelVersion {
-				msg.OtaChecksumType = 65535
+				msg.OtaUrl = "https://sampleflowurl.dclmodel"
+				msg.OtaChecksumType = 10
+
+				return msg
+			}(validMsgCreateModelVersion()),
+		},
+		{
+			name: "OtaChecksumType == 11 (sha3-384)",
+			msg: func(msg *MsgCreateModelVersion) *MsgCreateModelVersion {
+				msg.OtaUrl = "https://sampleflowurl.dclmodel"
+				msg.OtaChecksumType = 11
+
+				return msg
+			}(validMsgCreateModelVersion()),
+		},
+		{
+			name: "OtaChecksumType == 12 (sha3-512)",
+			msg: func(msg *MsgCreateModelVersion) *MsgCreateModelVersion {
+				msg.OtaUrl = "https://sampleflowurl.dclmodel"
+				msg.OtaChecksumType = 12
 
 				return msg
 			}(validMsgCreateModelVersion()),