diff --git a/__tests__/utils/ec.test.ts b/__tests__/utils/ec.test.ts
deleted file mode 100644
index 7fb0389ec..000000000
--- a/__tests__/utils/ec.test.ts
+++ /dev/null
@@ -1,10 +0,0 @@
-import { ec } from '../../src';
-
-describe.only('ec full public key', () => {
-  test('determine if value is a BigNumberish', () => {
-    const privateKey1 = '0x43b7240d227aa2fb8434350b3321c40ac1b88c7067982549e7609870621b535';
-    expect(ec.getFullPublicKey(privateKey1)).toBe(
-      '0x0400b730bd22358612b5a67f8ad52ce80f9e8e893639ade263537e6ef35852e5d3057795f6b090f7c6985ee143f798608a53b3659222c06693c630857a10a92acf'
-    );
-  });
-});
diff --git a/__tests__/utils/num.test.ts b/__tests__/utils/num.test.ts
index 64ec9f28f..81f0e7bb1 100644
--- a/__tests__/utils/num.test.ts
+++ b/__tests__/utils/num.test.ts
@@ -217,7 +217,7 @@ describe('stringToSha256ToArrayBuff4', () => {
   });
 });
 
-describe.only('isBigNumberish', () => {
+describe('isBigNumberish', () => {
   test('determine if value is a BigNumberish', () => {
     expect(num.isBigNumberish(234)).toBe(true);
     expect(num.isBigNumberish(234n)).toBe(true);
diff --git a/__tests__/utils/stark.test.ts b/__tests__/utils/stark.test.ts
index 0252e45f1..04a82d456 100644
--- a/__tests__/utils/stark.test.ts
+++ b/__tests__/utils/stark.test.ts
@@ -116,3 +116,12 @@ describe('stark', () => {
     expect(stark.v3Details(detailsUndefined)).toEqual(expect.objectContaining(detailsAnything));
   });
 });
+
+describe('ec full public key', () => {
+  test('determine if value is a BigNumberish', () => {
+    const privateKey1 = '0x43b7240d227aa2fb8434350b3321c40ac1b88c7067982549e7609870621b535';
+    expect(stark.getFullPublicKey(privateKey1)).toBe(
+      '0x0400b730bd22358612b5a67f8ad52ce80f9e8e893639ade263537e6ef35852e5d3057795f6b090f7c6985ee143f798608a53b3659222c06693c630857a10a92acf'
+    );
+  });
+});
diff --git a/__tests__/utils/typedData.test.ts b/__tests__/utils/typedData.test.ts
index 88a09c10d..cb364efb6 100644
--- a/__tests__/utils/typedData.test.ts
+++ b/__tests__/utils/typedData.test.ts
@@ -11,7 +11,6 @@ import {
   Account,
   BigNumberish,
   StarknetDomain,
-  ec,
   num,
   stark,
   typedData,
@@ -361,7 +360,7 @@ describe('typedData', () => {
   describe('verifyMessage', () => {
     const addr = '0x64b48806902a367c8598f4f95c305e8c1a1acba5f082d294a43793113115691';
     const privK = '0x71d7bb07b9a64f6f78ac4c816aff4da9';
-    const fullPubK = ec.getFullPublicKey(privK);
+    const fullPubK = stark.getFullPublicKey(privK);
     const myAccount = new Account({ nodeUrl: 'fake' }, addr, privK);
     let signedMessage: Signature;
     let hashedMessage: string;
diff --git a/src/utils/ec.ts b/src/utils/ec.ts
index 1cf6cadce..f6dadcae5 100644
--- a/src/utils/ec.ts
+++ b/src/utils/ec.ts
@@ -1,23 +1,3 @@
-import { getPublicKey } from '@scure/starknet';
-import type { BigNumberish } from '../types';
-import { addHexPrefix, buf2hex } from './encode';
-
 // TODO rename
 export * as starkCurve from '@scure/starknet';
 export * as weierstrass from '@noble/curves/abstract/weierstrass';
-
-/**
- * get the hex string of the full public key related to a Starknet private key.
- * @param {BigNumberish} privateKey a 252 bits private key.
- * @returns {string} an hex string of a 520 bit number, representing the full public key related to `privateKey`.
- * @example
- * ```typescript
- * const result = ec.getFullPublicKey("0x43b7240d227aa2fb8434350b3321c40ac1b88c7067982549e7609870621b535");
- * // result = "0x0400b730bd22358612b5a67f8ad52ce80f9e8e893639ade263537e6ef35852e5d3057795f6b090f7c6985ee143f798608a53b3659222c06693c630857a10a92acf"
- * ```
- */
-export function getFullPublicKey(privateKey: BigNumberish): string {
-  const privKey = addHexPrefix(BigInt(privateKey).toString(16));
-  const fullPrivKey = addHexPrefix(buf2hex(getPublicKey(privKey, false)));
-  return fullPrivKey;
-}
diff --git a/src/utils/num.ts b/src/utils/num.ts
index 134090ce3..d9a097f11 100644
--- a/src/utils/num.ts
+++ b/src/utils/num.ts
@@ -413,6 +413,6 @@ export function isBigNumberish(input: unknown): input is BigNumberish {
   return (
     isNumber(input) ||
     isBigInt(input) ||
-    (typeof input === 'string' && (isHex(input) || /^[0-9]*$/i.test(input)))
+    (typeof input === 'string' && (isHex(input) || isStringWholeNumber(input)))
   );
 }
diff --git a/src/utils/stark.ts b/src/utils/stark.ts
index 5bf89bbb2..4add7ae6a 100644
--- a/src/utils/stark.ts
+++ b/src/utils/stark.ts
@@ -1,6 +1,6 @@
 // eslint-disable-next-line @typescript-eslint/no-unused-vars
 import type { SPEC } from 'starknet-types-07';
-import { getStarkKey, utils } from '@scure/starknet';
+import { getPublicKey, getStarkKey, utils } from '@scure/starknet';
 import { gzip, ungzip } from 'pako';
 
 import { ZERO, FeeMarginPercentage } from '../constants';
@@ -14,7 +14,7 @@ import {
 } from '../types';
 import { EDAMode, EDataAvailabilityMode, ETransactionVersion, ResourceBounds } from '../types/api';
 import { FeeEstimate } from '../types/provider';
-import { addHexPrefix, arrayBufferToString, atobUniversal, btoaUniversal } from './encode';
+import { addHexPrefix, arrayBufferToString, atobUniversal, btoaUniversal, buf2hex } from './encode';
 import { parse, stringify } from './json';
 import {
   addPercent,
@@ -351,3 +351,19 @@ export function reduceV2(providedVersion: ETransactionVersion): ETransactionVers
   if (providedVersion === ETransactionVersion.V2) return ETransactionVersion.V1;
   return providedVersion;
 }
+
+/**
+ * get the hex string of the full public key related to a Starknet private key.
+ * @param {BigNumberish} privateKey a 252 bits private key.
+ * @returns {string} an hex string of a 520 bit number, representing the full public key related to `privateKey`.
+ * @example
+ * ```typescript
+ * const result = ec.getFullPublicKey("0x43b7240d227aa2fb8434350b3321c40ac1b88c7067982549e7609870621b535");
+ * // result = "0x0400b730bd22358612b5a67f8ad52ce80f9e8e893639ade263537e6ef35852e5d3057795f6b090f7c6985ee143f798608a53b3659222c06693c630857a10a92acf"
+ * ```
+ */
+export function getFullPublicKey(privateKey: BigNumberish): string {
+  const privKey = toHex(privateKey);
+  const fullPrivKey = addHexPrefix(buf2hex(getPublicKey(privKey, false)));
+  return fullPrivKey;
+}
diff --git a/src/utils/typedData.ts b/src/utils/typedData.ts
index d654ccc37..3caa93704 100644
--- a/src/utils/typedData.ts
+++ b/src/utils/typedData.ts
@@ -618,6 +618,23 @@ export function getMessageHash(typedData: TypedData, account: BigNumberish): str
  * // result1 = result2 = true
  * ```
  */
+export function verifyMessage(
+  message: TypedData,
+  signature: Signature,
+  fullPublicKey: BigNumberish,
+  accountAddress: BigNumberish
+): boolean;
+export function verifyMessage(
+  message: BigNumberish,
+  signature: Signature,
+  fullPublicKey: BigNumberish
+): boolean;
+export function verifyMessage(
+  message: BigNumberish | TypedData,
+  signature: Signature,
+  fullPublicKey: BigNumberish,
+  accountAddress?: BigNumberish
+): boolean;
 export function verifyMessage(
   message: BigNumberish | TypedData,
   signature: Signature,
diff --git a/www/docs/guides/signature.md b/www/docs/guides/signature.md
index 5cce38965..0c2044933 100644
--- a/www/docs/guides/signature.md
+++ b/www/docs/guides/signature.md
@@ -17,7 +17,7 @@ import { ec, hash, type BigNumberish, type WeierstrassSignatureType } from 'star
 
 const privateKey = '0x1234567890987654321';
 const starknetPublicKey = ec.starkCurve.getStarkKey(privateKey);
-const fullPublicKey = ec.getFullPublicKey(privateKey);
+const fullPublicKey = stark.getFullPublicKey(privateKey);
 const message: BigNumberish[] = [1, 128, 18, 14];
 
 const msgHash = hash.computeHashOnElements(message);
@@ -143,7 +143,7 @@ const myTypedData: TypedData = {
 };
 
 const account0 = new Account(myProvider, address, privateKey);
-const fullPublicKey = ec.getFullPublicKey(privateKey);
+const fullPublicKey = stark.getFullPublicKey(privateKey);
 
 const msgHash = await account0.hashMessage(myTypedData);
 const signature: Signature = (await account0.signMessage(myTypedData)) as WeierstrassSignatureType;