diff --git a/README.md b/README.md
index 3189d48..8ba0403 100644
--- a/README.md
+++ b/README.md
@@ -30,12 +30,12 @@ php artisan vendor:publish --provider="Arifszn\AdvancedValidation\ServiceProvide
 You can specify the error message on the fly when declaring the rules. Simple pass the error message parameter.
 
 ```php
-use Arifszn\AdvancedValidation\Rules\Base64Image;
+use Arifszn\AdvancedValidation\Rules\Username;
 
 public function rules()
 {
     return [
-        'avatar' => [new Base64Image('Your custom error message')],
+        'foo' => [new Username('Your custom error message')],
     ];
 }
 ```
@@ -52,8 +52,12 @@ public function rules()
 - [`Divisible By`](#divisibleby)
 - [`Ethereum Address`](#ethereumaddress)
 - [`Float Number`](#floatnumber)
+- [`Hash`](#hash)
 - [`Image URL`](#imageurl)
+- [`JWT`](#jwt)
+- [`Name`](#name)
 - [`Phone`](#phone)
+- [`Username`](#username)
 - [`Without Spaces`](#withoutspaces)
 
 
@@ -61,6 +65,10 @@ public function rules()
 
 The field under validation must contain ASCII chars only.
 
+```
+public Arifszn\AdvancedValidation\Rules\Ascii::__construct(string $errorMessage = null)
+```
+
 ```php
 use Arifszn\AdvancedValidation\Rules\Ascii;
 
@@ -76,6 +84,10 @@ public function rules()
 
 The field under validation must be a Base64 encoded image.
 
+```
+public Arifszn\AdvancedValidation\Rules\Base64Image::__construct(string $errorMessage = null)
+```
+
 ```php
 use Arifszn\AdvancedValidation\Rules\Base64Image;
 
@@ -91,6 +103,10 @@ public function rules()
 
 The field under validation must be a Base64 encoded string.
 
+```
+public Arifszn\AdvancedValidation\Rules\Base64String::__construct(string $errorMessage = null)
+```
+
 ```php
 use Arifszn\AdvancedValidation\Rules\Base64String;
 
@@ -106,6 +122,10 @@ public function rules()
 
 The field under validation must be a BIC([Business Identifier Code](https://en.wikipedia.org/wiki/ISO_9362)) or SWIFT code.
 
+```
+public Arifszn\AdvancedValidation\Rules\BIC::__construct(string $errorMessage = null)
+```
+
 ```php
 use Arifszn\AdvancedValidation\Rules\BIC;
 
@@ -121,6 +141,10 @@ public function rules()
 
 The field under validation must be a valid BTC address.
 
+```
+public Arifszn\AdvancedValidation\Rules\BtcAddress::__construct(string $errorMessage = null)
+```
+
 ```php
 use Arifszn\AdvancedValidation\Rules\BtcAddress;
 
@@ -136,6 +160,10 @@ public function rules()
 
 The field under validation must be a valid credit card number.
 
+```
+public Arifszn\AdvancedValidation\Rules\CreditCard::__construct(string $errorMessage = null)
+```
+
 ```php
 use Arifszn\AdvancedValidation\Rules\CreditCard;
 
@@ -151,6 +179,10 @@ public function rules()
 
 The field under validation must have [data uri format](https://developer.mozilla.org/en-US/docs/Web/HTTP/Basics_of_HTTP/Data_URIs).
 
+```
+public Arifszn\AdvancedValidation\Rules\DataURI::__construct(string $errorMessage = null)
+```
+
 ```php
 use Arifszn\AdvancedValidation\Rules\DataURI;
 
@@ -166,6 +198,10 @@ public function rules()
 
 The field under validation must be divisible by the given number.
 
+```
+public Arifszn\AdvancedValidation\Rules\DivisibleBy::__construct(int $number, string $errorMessage = null)
+```
+
 ```php
 use Arifszn\AdvancedValidation\Rules\DivisibleBy;
 
@@ -180,6 +216,10 @@ public function rules()
 ### `EthereumAddress`
 The field under validation must be an [Ethereum](https://ethereum.org/en/) address. Does not validate address checksums.
 
+```
+public Arifszn\AdvancedValidation\Rules\EthereumAddress::__construct(string $errorMessage = null)
+```
+
 ```php
 use Arifszn\AdvancedValidation\Rules\EthereumAddress;
 
@@ -195,6 +235,10 @@ public function rules()
 
 The field under validation must be a float number.
 
+```
+public Arifszn\AdvancedValidation\Rules\FloatNumber::__construct(string $errorMessage = null)
+```
+
 ```php
 use Arifszn\AdvancedValidation\Rules\FloatNumber;
 
@@ -206,6 +250,27 @@ public function rules()
 }
 ```
 
+### `Hash`
+
+The field under validation must be a hash of type algorithm.
+
+Algorithm is one of `'md4', 'md5', 'sha1', 'sha256', 'sha384', 'sha512', 'ripemd128', 'ripemd160', 'tiger128', 'tiger160', 'tiger192', 'crc32', 'crc32b'`.
+
+```
+public Arifszn\AdvancedValidation\Rules\Hash::__construct(string $algorithm, string $errorMessage = null)
+```
+
+```php
+use Arifszn\AdvancedValidation\Rules\Hash;
+
+public function rules()
+{
+    return [
+        'foo' => [new Hash('md4')],
+    ];
+}
+```
+
 ### `ImageURL`
 
 The field under validation must be a valid image URL.
@@ -213,6 +278,10 @@ The field under validation must be a valid image URL.
 ✓ https://www.php.net/images/logos/php-logo.png \
 ✕ https://imaginarysite123.com/invalid.png
 
+```
+public Arifszn\AdvancedValidation\Rules\ImageURL::__construct(string $errorMessage = null)
+```
+
 ```php
 use Arifszn\AdvancedValidation\Rules\ImageURL;
 
@@ -224,6 +293,48 @@ public function rules()
 }
 ```
 
+### `JWT`
+
+The field under validation must have a valid format of JWT ([JSON Web Token](https://en.wikipedia.org/wiki/JSON_Web_Token)).
+
+```
+public Arifszn\AdvancedValidation\Rules\Jwt::__construct(string $errorMessage = null)
+```
+
+```php
+use Arifszn\AdvancedValidation\Rules\Jwt;
+
+public function rules()
+{
+    return [
+        'foo' => [new Jwt()],
+    ];
+}
+```
+
+### `Name`
+
+The field under validation must be a valid name.
+
+- no emoji
+- no number (if $allowNumber flag is true, it will accept numbers, default is false)
+- special characters are allowed (restricting special characters will cause false-negative for names like `Martin Luther King, Jr.` or `李小龍`)
+
+```
+public Arifszn\AdvancedValidation\Rules\Name::__construct(bool $allowNumber = false, string $errorMessage = null)
+```
+
+```php
+use Arifszn\AdvancedValidation\Rules\Name;
+
+public function rules()
+{
+    return [
+        'name' => [new Name()],
+    ];
+}
+```
+
 ### `Phone`
 
 The field under validation must be a valid phone number.
@@ -233,6 +344,10 @@ The field under validation must be a valid phone number.
 ✓ (xxx) xxx-xxxx \
 ✓ xxxxxxxxxx
 
+```
+public Arifszn\AdvancedValidation\Rules\Phone::__construct(string $errorMessage = null)
+```
+
 ```php
 use Arifszn\AdvancedValidation\Rules\Phone;
 
@@ -244,10 +359,38 @@ public function rules()
 }
 ```
 
+### `Username`
+
+The field under validation must be a valid username.
+
+- starts with a letter (alpha)
+- only alpha-numeric (a-z, A-Z, 0-9), underscore, minus and dot
+- multiple underscores, minus and are not allowed (-- or __ or ..)
+- underscores, minus and dot are not allowed at the beginning or end
+
+```
+public Arifszn\AdvancedValidation\Rules\Username::__construct(string $errorMessage = null)
+```
+
+```php
+use Arifszn\AdvancedValidation\Rules\Username;
+
+public function rules()
+{
+    return [
+        'username' => [new Username()],
+    ];
+}
+```
+
 ### `WithoutSpaces`
 
 The field under validation must not contain spaces.
 
+```
+public Arifszn\AdvancedValidation\Rules\WithoutSpaces::__construct(string $errorMessage = null)
+```
+
 ```php
 use Arifszn\AdvancedValidation\Rules\WithoutSpaces;
 
diff --git a/resources/lang/en/validation.php b/resources/lang/en/validation.php
index ff042fa..1992eab 100644
--- a/resources/lang/en/validation.php
+++ b/resources/lang/en/validation.php
@@ -1,4 +1,3 @@
-
 <?php
 
 return [
@@ -11,8 +10,12 @@
     'data_uri' => 'The :attribute must have data uri format.',
     'divisible_by' => 'The :attribute must be divisible by :number.',
     'ethereum_address' => 'The :attribute must be an Ethereum address.',
-    'float_number' => 'The :attribute must be a float number',
+    'float_number' => 'The :attribute must be a float number.',
+    'hash' => 'The :attribute must be a hash of :algorithm algorithm.',
     'image_url' => 'The :attribute must be a valid image URL.',
+    'jwt' => 'The :attribute must have a valid format of JWT.',
+    'name' => 'The :attribute must be a valid name.',
     'phone' => 'The :attribute must be a valid phone number.',
+    'username' => 'The :attribute must be a valid username.',
     'without_spaces' => 'The :attribute must not contain spaces.',
 ];
diff --git a/src/Rules/Hash.php b/src/Rules/Hash.php
new file mode 100644
index 0000000..c480681
--- /dev/null
+++ b/src/Rules/Hash.php
@@ -0,0 +1,103 @@
+<?php
+
+namespace Arifszn\AdvancedValidation\Rules;
+
+use Illuminate\Contracts\Validation\Rule;
+
+/**
+ * The field under validation must be a hash of type algorithm. Algorithm is one of
+ * ['md4', 'md5', 'sha1', 'sha256', 'sha384', 'sha512', 'ripemd128', 'ripemd160',
+ * 'tiger128', 'tiger160', 'tiger192', 'crc32', 'crc32b']
+ *
+ * @package Arifszn\AdvancedValidation\Rules
+ */
+class Hash implements Rule
+{
+    /**
+     * @var string
+     */
+    private $algorithm;
+
+    /**
+     * @var string
+     */
+    private $errorMessage;
+
+    /**
+     * @var string
+     */
+    private $attribute;
+
+    /**
+     * Create a new rule instance.
+     *
+     * @param string $algorithm   'md4' | 'md5' | 'sha1' | 'sha256' | 'sha384' | 'sha512' | 'ripemd128' | 'ripemd160' | 'tiger128' | 'tiger160' | 'tiger192' | 'crc32' | 'crc32b'
+     * @param string|null $errorMessage   Custom error message.
+     * @return void
+     */
+    public function __construct(string $algorithm, string $errorMessage = null)
+    {
+        $this->algorithm = $algorithm;
+        $this->errorMessage = $errorMessage;
+    }
+
+    /**
+     * Determine if the validation rule passes.
+     *
+     * @param string $attribute
+     * @param mixed $value
+     * @return bool
+     */
+    public function passes($attribute, $value)
+    {
+        $this->attribute = $attribute;
+
+        try {
+            $hash = '/^[a-fA-F0-9]{' . $this->getLength($this->algorithm) . '}$/';
+
+            return preg_match($hash, $value);
+        } catch (\Throwable $th) {
+            return false;
+        }
+    }
+
+    /**
+     * Get the validation error message.
+     *
+     * @return string
+     */
+    public function message()
+    {
+        return $this->errorMessage ? $this->errorMessage : trans('advancedValidation::validation.hash', [
+            'attribute' => $this->attribute,
+            'algorithm' => $this->algorithm
+        ]);
+    }
+
+    /**
+     * Get length.
+     *
+     * @param string $algorithm
+     * @return int
+     */
+    private function getLength(string $algorithm)
+    {
+        $lengths = [
+            'md5' => 32,
+            'md4' => 32,
+            'sha1' => 40,
+            'sha256' => 64,
+            'sha384' => 96,
+            'sha512' => 128,
+            'ripemd128' => 32,
+            'ripemd160' => 40,
+            'tiger128' => 32,
+            'tiger160' => 40,
+            'tiger192' => 48,
+            'crc32' => 8,
+            'crc32b' => 8,
+        ];
+
+        return $lengths[$algorithm];
+    }
+}
diff --git a/src/Rules/Jwt.php b/src/Rules/Jwt.php
new file mode 100644
index 0000000..a2a1b26
--- /dev/null
+++ b/src/Rules/Jwt.php
@@ -0,0 +1,51 @@
+<?php
+
+namespace Arifszn\AdvancedValidation\Rules;
+
+use Illuminate\Contracts\Validation\Rule;
+
+/**
+ * The field under validation must have a valid format of JWT.
+ *
+ * @package Arifszn\AdvancedValidation\Rules
+ */
+class Jwt implements Rule
+{
+    /**
+     * @var string
+     */
+    private $errorMessage;
+
+    /**
+     * Create a new rule instance.
+     *
+     * @param string|null $errorMessage   Custom error message.
+     * @return void
+     */
+    public function __construct(string $errorMessage = null)
+    {
+        $this->errorMessage = $errorMessage;
+    }
+
+    /**
+     * Determine if the validation rule passes.
+     *
+     * @param string $attribute
+     * @param mixed $value
+     * @return bool
+     */
+    public function passes($attribute, $value)
+    {
+        return preg_match('/^[a-zA-Z0-9-_]+\.[a-zA-Z0-9-_]+\.[a-zA-Z0-9-_]+$/', $value);
+    }
+
+    /**
+     * Get the validation error message.
+     *
+     * @return string
+     */
+    public function message()
+    {
+        return $this->errorMessage ? $this->errorMessage : trans('advancedValidation::validation.jwt');
+    }
+}
diff --git a/src/Rules/Name.php b/src/Rules/Name.php
new file mode 100644
index 0000000..9604dee
--- /dev/null
+++ b/src/Rules/Name.php
@@ -0,0 +1,76 @@
+<?php
+
+namespace Arifszn\AdvancedValidation\Rules;
+
+use Illuminate\Contracts\Validation\Rule;
+
+/**
+ * The field under validation must be a valid name.
+ *
+ *  - no emoji
+ *  - no number (if $allowNumber flag is false)
+ *  - special characters are allowed
+ *
+ * @package Arifszn\AdvancedValidation\Rules
+ */
+class Name implements Rule
+{
+    /**
+     * @var bool
+     */
+    private $allowNumber;
+
+    /**
+     * @var string
+     */
+    private $errorMessage;
+
+    /**
+     * Create a new rule instance.
+     *
+     * @param bool $allowNumber   Allow number.
+     * @param string|null $errorMessage   Custom error message.
+     * @return void
+     */
+    public function __construct(bool $allowNumber = false, string $errorMessage = null)
+    {
+        $this->allowNumber = $allowNumber;
+        $this->errorMessage = $errorMessage;
+    }
+
+    /**
+     * Determine if the validation rule passes.
+     *
+     * @param string $attribute
+     * @param mixed $value
+     * @return bool
+     */
+    public function passes($attribute, $value)
+    {
+        // check empty
+        if (!trim($value)) {
+            return false;
+        }
+
+        // check no emoji
+        if (preg_match('/\p{S}/u', $value)) {
+            return false;
+        }
+
+        if (!$this->allowNumber && !preg_match('/^([^0-9]*)$/', $value)) {
+            return false;
+        }
+
+        return true;
+    }
+
+    /**
+     * Get the validation error message.
+     *
+     * @return string
+     */
+    public function message()
+    {
+        return $this->errorMessage ? $this->errorMessage : trans('advancedValidation::validation.name');
+    }
+}
diff --git a/src/Rules/Username.php b/src/Rules/Username.php
new file mode 100644
index 0000000..6b574fb
--- /dev/null
+++ b/src/Rules/Username.php
@@ -0,0 +1,56 @@
+<?php
+
+namespace Arifszn\AdvancedValidation\Rules;
+
+use Illuminate\Contracts\Validation\Rule;
+
+/**
+ * The field under validation must be a valid username.
+ *
+ *  - starts with a letter (alpha)
+ *  - only alpha-numeric (a-z, A-Z, 0-9), underscore, minus and dot
+ *  - multiple underscores, minus and are not allowed (-- or __ or ..)
+ *  - underscores, minus and dot are not allowed at the beginning or end
+ *
+ * @package Arifszn\AdvancedValidation\Rules
+ */
+class Username implements Rule
+{
+    /**
+     * @var string
+     */
+    private $errorMessage;
+
+    /**
+     * Create a new rule instance.
+     *
+     * @param string|null $errorMessage   Custom error message.
+     * @return void
+     */
+    public function __construct(string $errorMessage = null)
+    {
+        $this->errorMessage = $errorMessage;
+    }
+
+    /**
+     * Determine if the validation rule passes.
+     *
+     * @param string $attribute
+     * @param mixed $value
+     * @return bool
+     */
+    public function passes($attribute, $value)
+    {
+        return preg_match('/^[a-z][a-z0-9]*(?:[_\-\.][a-z0-9]+)*$/i', $value);
+    }
+
+    /**
+     * Get the validation error message.
+     *
+     * @return string
+     */
+    public function message()
+    {
+        return $this->errorMessage ? $this->errorMessage : trans('advancedValidation::validation.username');
+    }
+}
diff --git a/tests/Rules/HashTest.php b/tests/Rules/HashTest.php
new file mode 100644
index 0000000..14d7a43
--- /dev/null
+++ b/tests/Rules/HashTest.php
@@ -0,0 +1,38 @@
+<?php
+
+namespace Arifszn\AdvancedValidation\Tests\Rules;
+
+use Arifszn\AdvancedValidation\Rules\Hash;
+use Arifszn\AdvancedValidation\Tests\TestCase;
+
+class HashTest extends TestCase
+{
+    /**
+     * @dataProvider provider
+     */
+    public function testValidation($result, $value)
+    {
+        $algorithms = ['md5', 'md4', 'ripemd128', 'tiger128'];
+
+        foreach ($algorithms as $algorithm) {
+            $this->assertEquals($result, (new Hash($algorithm))->passes('foo', $value));
+        }
+    }
+
+    public function provider()
+    {
+        return [
+            [true, 'd94f3f016ae679c3008de268209132f2'],
+            [true, '751adbc511ccbe8edf23d486fa4581cd'],
+            [true, '88dae00e614d8f24cfd5a8b3f8002e93'],
+            [true, '0bf1c35032a71a14c2f719e5a14c1e96'],
+            [true, 'd94f3F016Ae679C3008de268209132F2'],
+            [true, '88DAE00e614d8f24cfd5a8b3f8002E93'],
+
+            [false, 'q94375dj93458w34'],
+            [false, '39485729348'],
+            [false, '%&FHKJFvk'],
+            [false, 'KYT0bf1c35032a71a14c2f719e5a1'],
+        ];
+    }
+}
diff --git a/tests/Rules/JwtTest.php b/tests/Rules/JwtTest.php
new file mode 100644
index 0000000..04a1784
--- /dev/null
+++ b/tests/Rules/JwtTest.php
@@ -0,0 +1,33 @@
+<?php
+
+namespace Arifszn\AdvancedValidation\Tests\Rules;
+
+use Arifszn\AdvancedValidation\Rules\Jwt;
+use Arifszn\AdvancedValidation\Tests\TestCase;
+
+class JwtTest extends TestCase
+{
+    /**
+     * @dataProvider provider
+     */
+    public function testValidation($result, $value)
+    {
+        $this->assertEquals($result, (new Jwt())->passes('foo', $value));
+    }
+
+    public function provider()
+    {
+        return [
+            [true, 'eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJsb2dnZWRJbkFzIjoiYWRtaW4iLCJpYXQiOjE0MjI3Nzk2Mzh9.gzSraSYS8EXBxLN_oWnFSRgCzcmJmMjLiuyu5CSpyHI'],
+            [true, 'eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJsb3JlbSI6Imlwc3VtIn0.ymiJSsMJXR6tMSr8G9usjQ15_8hKPDv_CArLhxw28MI'],
+            [true, 'eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJkb2xvciI6InNpdCIsImFtZXQiOlsibG9yZW0iLCJpcHN1bSJdfQ.rRpe04zbWbbJjwM43VnHzAboDzszJtGrNsUxaqQ-GQ8'],
+            [true, 'eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJqb2huIjp7ImFnZSI6MjUsImhlaWdodCI6MTg1fSwiamFrZSI6eyJhZ2UiOjMwLCJoZWlnaHQiOjI3MH19.YRLPARDmhGMC3BBk_OhtwwK21PIkVCqQe8ncIRPKo-E'],
+
+            [false, 'eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9'],
+            [false, '$Zs.ewu.su84'],
+            [false, 'ks64$S/9.dy$§kz.3sd73b'],
+            [false, ''],
+            [false, '  '],
+        ];
+    }
+}
diff --git a/tests/Rules/NameTest.php b/tests/Rules/NameTest.php
new file mode 100644
index 0000000..9bb6d9f
--- /dev/null
+++ b/tests/Rules/NameTest.php
@@ -0,0 +1,62 @@
+<?php
+
+namespace Arifszn\AdvancedValidation\Tests\Rules;
+
+use Arifszn\AdvancedValidation\Rules\Name;
+use Arifszn\AdvancedValidation\Tests\TestCase;
+
+class NameTest extends TestCase
+{
+    /**
+     * @dataProvider providerWithoutAllowNumber
+     */
+    public function testValidationWithoutAllowNumber($result, $value)
+    {
+        $this->assertEquals($result, (new Name(false))->passes('foo', $value));
+    }
+
+    /**
+     * @dataProvider providerWithAllowNumber
+     */
+    public function testValidationWithAllowNumber($result, $value)
+    {
+        $this->assertEquals($result, (new Name(true))->passes('foo', $value));
+    }
+
+    public function providerWithoutAllowNumber()
+    {
+        return array_merge($this->shared(), [
+            [false, '1234 abc DEF'],
+            [false, '1234abcDEF'],
+            [false, '123'],
+            [false, '李小龍123'],
+        ]);
+    }
+
+    public function providerWithAllowNumber()
+    {
+        return array_merge($this->shared(), [
+            [true, '1234 abc DEF'],
+            [true, '1234abcDEF'],
+            [true, '123'],
+            [true, '李小龍123'],
+        ]);
+    }
+
+    private function shared()
+    {
+        return [
+            [true, 'John Doe'],
+            [true, 'john doe'],
+            [true, 'j'],
+            [true, 'john'],
+            [true, 'Md. Ariful Alam'],
+            [true, 'Martin Luther King, Jr.'],
+            [true, '李小龍'],
+            [false, '😀'],
+            [false, 'john 😀'],
+            [false, ''],
+            [false, '  '],
+        ];
+    }
+}
diff --git a/tests/Rules/UsernameTest.php b/tests/Rules/UsernameTest.php
new file mode 100644
index 0000000..f9ea105
--- /dev/null
+++ b/tests/Rules/UsernameTest.php
@@ -0,0 +1,51 @@
+<?php
+
+namespace Arifszn\AdvancedValidation\Tests\Rules;
+
+use Arifszn\AdvancedValidation\Rules\Username;
+use Arifszn\AdvancedValidation\Tests\TestCase;
+
+class UsernameTest extends TestCase
+{
+    /**
+     * @dataProvider provider
+     */
+    public function testValidation($result, $value)
+    {
+        $this->assertEquals($result, (new Username())->passes('foo', $value));
+    }
+
+    public function provider()
+    {
+        return [
+            [true, 'john'],
+            [true, 'john.doe'],
+            [true, 'john_doe'],
+            [true, 'john-doe'],
+            [true, 'john.doe.123'],
+            [true, 'john123'],
+            [true, 'john_123'],
+            [true, 'john-123'],
+
+            [false, '_john'],
+            [false, '-john'],
+            [false, '.john'],
+            [false, 'john_'],
+            [false, 'john-'],
+            [false, 'john.'],
+            [false, '_john_'],
+            [false, 'john__doe'],
+            [false, 'john--doe'],
+            [false, 'john..doe'],
+            [false, '123'],
+            [false, '123.john'],
+            [false, '&nbsp;'],
+            [false, 'a b c'],
+            [false, 'ｆｏｏbar'],
+            [false, '😀'],
+            [false, 'john😀'],
+            [false, ''],
+            [false, '  '],
+        ];
+    }
+}