diff --git a/packages/core/src/api/__tests__/transactionApi.spec.ts b/packages/core/src/api/__tests__/transactionApi.spec.ts
index 5052e5f0..c83ba9d2 100644
--- a/packages/core/src/api/__tests__/transactionApi.spec.ts
+++ b/packages/core/src/api/__tests__/transactionApi.spec.ts
@@ -426,10 +426,11 @@ describe('TransactionApi', () => {
 
             const service = createChainService(httpMock, 'relPath');
 
-            const encryptedMessage = new AttachmentEncryptedMessage();
-            encryptedMessage.data = 'data';
-            encryptedMessage.isText = true;
-            encryptedMessage.nonce = 'nonce';
+            const encryptedMessage = new AttachmentEncryptedMessage({
+                data: 'data',
+                isText: true,
+                nonce: 'nonce',
+            });
 
             const status = await sendAmountToSingleRecipient(service)(
                 {
@@ -459,9 +460,10 @@ describe('TransactionApi', () => {
 
             const service = createChainService(httpMock, 'relPath');
 
-            const message = new AttachmentMessage();
-            message.message = 'message';
-            message.messageIsText = true;
+            const message = new AttachmentMessage({
+                message: 'message',
+                messageIsText: true,
+            });
 
             const status = await sendAmountToSingleRecipient(service)({
                     amountPlanck: '2000',
diff --git a/packages/core/src/internal/__tests__/createParametersFromAttachment.spec.ts b/packages/core/src/internal/__tests__/createParametersFromAttachment.spec.ts
index 175a4911..33e27cbb 100644
--- a/packages/core/src/internal/__tests__/createParametersFromAttachment.spec.ts
+++ b/packages/core/src/internal/__tests__/createParametersFromAttachment.spec.ts
@@ -6,9 +6,10 @@ describe('createParametersFromAttachment', () => {
 
     it('should construct message attachment', () => {
 
-        const messageAttachment = new AttachmentMessage();
-        messageAttachment.message = 'message';
-        messageAttachment.messageIsText = true;
+        const messageAttachment = new AttachmentMessage({
+            message: 'message',
+            messageIsText: true,
+        });
 
         const params = createParametersFromAttachment(messageAttachment, {foo: 'bar'});
         expect(params).toEqual(
@@ -19,10 +20,11 @@ describe('createParametersFromAttachment', () => {
 
     it('should construct encrypted message attachment', () => {
 
-        const encryptedMessageAttachment = new AttachmentEncryptedMessage();
-        encryptedMessageAttachment.data = 'data';
-        encryptedMessageAttachment.nonce = 'nonce';
-        encryptedMessageAttachment.isText = true;
+        const encryptedMessageAttachment = new AttachmentEncryptedMessage({
+            data: 'data',
+            isText: true,
+            nonce: 'nonce'
+        });
 
         const params = createParametersFromAttachment(encryptedMessageAttachment, {foo: 'bar'});
         expect(params).toEqual(
diff --git a/packages/core/src/internal/verifyTransaction/__tests__/verifyTransaction.spec.ts b/packages/core/src/internal/verifyTransaction/__tests__/verifyTransaction.spec.ts
index fbc5549c..a275b6dc 100644
--- a/packages/core/src/internal/verifyTransaction/__tests__/verifyTransaction.spec.ts
+++ b/packages/core/src/internal/verifyTransaction/__tests__/verifyTransaction.spec.ts
@@ -23,6 +23,28 @@ describe('verifyTransaction', function () {
                 verifyTransaction(requestType, formData, testResponse);
             }).not.toThrow();
         });
+        it('should pass verification as expected - for non-text messages - case-insensitive', () => {
+            const requestType = 'sendMoney';
+            const formData = {
+                feeNQT: '2000000',
+                amountNQT: '30000000',
+                recipient: '4388562308859987170',
+                publicKey: '497d559d18d989b8e2d729eb6f69b70c1ddc3e554f75bef3ed2716a4b2121902',
+                message: 'C8AEA1C25FE7BFFE',
+                messageIsText: false,
+                deadline: 1440
+            };
+
+            const testResponse = {
+                'broadcasted': false,
+                'unsignedTransactionBytes': '0020195dea10a005497d559d18d989b8e2d729eb6f69b70c1ddc3e554f75bef3ed2716a4b2121902e28444162b4ee73c80c3c9010000000080841e000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001000000eef21100d97ccce0e6e218e304cfe1531b543c7c0108000000c8aea1c25fe7bffe',
+                'transactionJSON': {},
+                'requestProcessingTime': 8
+            };
+            expect(() => {
+                verifyTransaction(requestType, formData, testResponse);
+            }).not.toThrow();
+        });
         it('should throw error. Response is another transaction type', () => {
             const requestType = 'sendMoneyMultiSame';
             const formData = {
@@ -215,6 +237,7 @@ describe('verifyTransaction', function () {
                 verifyTransaction(requestType, formData, testResponse);
             }).not.toThrow();
         });
+
         it('should pass verification as expected - with non-zero quantity and non-mintable', () => {
             const requestType = 'issueAsset';
             const formData = {
diff --git a/packages/core/src/internal/verifyTransaction/verifyTransaction.ts b/packages/core/src/internal/verifyTransaction/verifyTransaction.ts
index 910a17a9..87ad2ceb 100644
--- a/packages/core/src/internal/verifyTransaction/verifyTransaction.ts
+++ b/packages/core/src/internal/verifyTransaction/verifyTransaction.ts
@@ -46,6 +46,7 @@ export function verifyTransaction(method: string, parameters: any, response: any
         throw new Error('Verification failed - Node Response does not match transaction parameters (A)');
     }
 
+
     let nParameters = 0;
     // tslint:disable-next-line:forin
     for (const prop in parameters) {
@@ -75,6 +76,11 @@ export function verifyTransaction(method: string, parameters: any, response: any
                     throw new Error(`Verification failed - Node Response does not match transaction parameter '${prop}'.`);
                 }
                 break;
+            case 'message':
+                if (Boolean(parameters['messageIsText']) && String(parameters['message']).toLocaleLowerCase() !== String(rebuiltObject.rebuiltData['message']).toLocaleLowerCase()) {
+                    throw new Error(`Verification failed - Node Response does not match transaction parameter 'message'.`);
+                }
+                break;
             default:
                 // case sensitive properties
                 if (String(parameters[prop]) !== String(rebuiltObject.rebuiltData[prop])) {
diff --git a/packages/core/src/typings/attachment.ts b/packages/core/src/typings/attachment.ts
index 8719d816..b428287c 100644
--- a/packages/core/src/typings/attachment.ts
+++ b/packages/core/src/typings/attachment.ts
@@ -16,8 +16,8 @@ export class Attachment {
 }
 
 interface AttachmentMessageArgs {
-    messageIsText?: boolean;
-    message?: string;
+    messageIsText: boolean;
+    message: string;
 }
 
 /**
@@ -30,13 +30,19 @@ export class AttachmentMessage extends Attachment {
     public messageIsText: boolean;
     public message: string;
 
-    constructor(data: AttachmentMessageArgs = {}) {
+    constructor(data: AttachmentMessageArgs) {
         super('message');
-        this.messageIsText = data.messageIsText || false;
-        this.message = data.message || undefined;
+        this.messageIsText = data.messageIsText;
+        this.message = data.message;
     }
 }
 
+interface AttachmentEncryptedMessageArgs {
+    data: string;
+    nonce: string;
+    isText: boolean;
+}
+
 /**
 * EncryptedMessage class
 *
@@ -48,11 +54,10 @@ export class AttachmentEncryptedMessage extends Attachment {
     public nonce: string;
     public isText: boolean;
 
-    // TODO: make constructor attrs as single args to be more expressive
-    constructor(data: any = {}) {
+    constructor(data: AttachmentEncryptedMessageArgs) {
         super('encrypted_message');
-        this.data = data.data || undefined;
-        this.nonce = data.nonce || undefined;
-        this.isText = data.isText || false;
+        this.data = data.data;
+        this.nonce = data.nonce;
+        this.isText = data.isText;
     }
 }
diff --git a/packages/http/src/httpError.ts b/packages/http/src/httpError.ts
index 5bbb2ce4..ad8d16e5 100644
--- a/packages/http/src/httpError.ts
+++ b/packages/http/src/httpError.ts
@@ -8,12 +8,13 @@
  * Thrown on HTTP errors
  * @module http
  */
-export class HttpError {
+export class HttpError extends Error {
     public timestamp: number = Date.now();
 
     constructor(public requestUrl: string,
                 public status: number,
                 public message: string,
                 public data: any) {
+        super(message);
     }
 }