diff --git a/modules/tax/commerce_tax.routing.yml b/modules/tax/commerce_tax.routing.yml
new file mode 100644
index 00000000..0af4299d
--- /dev/null
+++ b/modules/tax/commerce_tax.routing.yml
@@ -0,0 +1,7 @@
+commerce_tax.verification_result:
+  path: '/commerce_tax/verification-result/{tax_number}/{context}'
+  defaults:
+    _controller: '\Drupal\commerce_tax\Controller\TaxNumberController::result'
+    _title: 'Verification result'
+  requirements:
+    _access: 'TRUE'
diff --git a/modules/tax/src/Controller/TaxNumberController.php b/modules/tax/src/Controller/TaxNumberController.php
new file mode 100644
index 00000000..1a0562a2
--- /dev/null
+++ b/modules/tax/src/Controller/TaxNumberController.php
@@ -0,0 +1,159 @@
+<?php
+
+namespace Drupal\commerce_tax\Controller;
+
+use Drupal\commerce\UrlData;
+use Drupal\commerce_tax\Plugin\Commerce\TaxNumberType\SupportsVerificationInterface;
+use Drupal\commerce_tax\Plugin\Commerce\TaxNumberType\VerificationResult;
+use Drupal\commerce_tax\Plugin\Field\FieldType\TaxNumberItemInterface;
+use Drupal\Component\Plugin\Exception\PluginNotFoundException;
+use Drupal\Core\Datetime\DateFormatterInterface;
+use Drupal\Core\DependencyInjection\ContainerInjectionInterface;
+use Drupal\Core\Entity\EntityTypeManagerInterface;
+use Drupal\Core\StringTranslation\StringTranslationTrait;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+use Symfony\Component\HttpKernel\Exception\AccessDeniedHttpException;
+
+class TaxNumberController implements ContainerInjectionInterface {
+
+  use StringTranslationTrait;
+
+  /**
+   * The entity type manager.
+   *
+   * @var \Drupal\Core\Entity\EntityTypeManagerInterface
+   */
+  protected $entityTypeManager;
+
+  /**
+   * The date formatter.
+   *
+   * @var \Drupal\Core\Datetime\DateFormatterInterface
+   */
+  protected $dateFormatter;
+
+  /**
+   * Constructs a new TaxNumberController object.
+   *
+   * @param \Drupal\Core\Entity\EntityTypeManagerInterface $entity_type_manager
+   *   The entity type manager.
+   * @param \Drupal\Core\Datetime\DateFormatterInterface $date_formatter
+   *   The date formatter.
+   */
+  public function __construct(EntityTypeManagerInterface $entity_type_manager, DateFormatterInterface $date_formatter) {
+    $this->entityTypeManager = $entity_type_manager;
+    $this->dateFormatter = $date_formatter;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function create(ContainerInterface $container) {
+    return new static(
+      $container->get('entity_type.manager'),
+      $container->get('date.formatter')
+    );
+  }
+
+  /**
+   * Displays the verification result for the given tax number.
+   *
+   * @param string $tax_number
+   *   The tax number.
+   * @param string $context
+   *   The encoded context.
+   *
+   * @return array
+   *   A renderable array.
+   *
+   * @throws \Symfony\Component\HttpKernel\Exception\AccessDeniedHttpException
+   *   If the context is invalid or the user doesn't have access to update
+   *   the parent entity.
+   */
+  public function result($tax_number, $context) {
+    $context = $this->prepareContext($context);
+    if (!$context) {
+      throw new AccessDeniedHttpException();
+    }
+    /** @var \Drupal\Core\Entity\ContentEntityInterface $entity */
+    $entity = $context['entity'];
+    if (!$entity->access('update')) {
+      throw new AccessDeniedHttpException();
+    }
+    /** @var \Drupal\commerce_tax\Plugin\Field\FieldType\TaxNumberItemInterface $field */
+    $field = $context['field'];
+    if ($field->value != $tax_number) {
+      throw new AccessDeniedHttpException();
+    }
+
+    $result = [];
+    $type_plugin = $field->getTypePlugin();
+    if ($type_plugin instanceof SupportsVerificationInterface) {
+      $verification_result = new VerificationResult(
+        $field->verification_state,
+        $field->verification_timestamp,
+        $field->verification_result
+      );
+      $result = $type_plugin->renderVerificationResult($verification_result);
+      // @todo Move this to a Twig template, to allow it to be customized.
+      if ($field->verification_timestamp) {
+        $result['timestamp'] = [
+          '#type' => 'item',
+          '#title' => $this->t('Timestamp'),
+          '#plain_text' => $this->dateFormatter->format($field->verification_timestamp, 'long'),
+          '#weight' => -10,
+        ];
+      }
+    }
+
+    return $result;
+  }
+
+  /**
+   * Parses and validates the context.
+   *
+   * @param string $context
+   *   The context string.
+   *
+   * @return array|false
+   *   The prepared context, or FALSE if validation failed.
+   */
+  protected function prepareContext($context) {
+    $context = UrlData::decode($context);
+    $context = $context ?: [];
+    if (!count($context) == 4) {
+      return FALSE;
+    }
+    // Assign keys. The context array is numerically indexed to save space.
+    $keys = ['entity_type', 'entity_id', 'field_name', 'view_mode'];
+    $context = array_combine($keys, $context);
+    foreach ($keys as $key) {
+      if (empty($context[$key])) {
+        // Missing required data.
+        return FALSE;
+      }
+    }
+    // Validate the provided values.
+    try {
+      $storage = $this->entityTypeManager->getStorage($context['entity_type']);
+    }
+    catch (PluginNotFoundException $e) {
+      return FALSE;
+    }
+    /** @var \Drupal\Core\Entity\ContentEntityInterface $entity */
+    $entity = $storage->load($context['entity_id']);
+    if (!$entity || !$entity->hasField($context['field_name'])) {
+      return FALSE;
+    }
+    $field = $entity->get($context['field_name'])->first();
+    if (!($field instanceof TaxNumberItemInterface)) {
+      return FALSE;
+    }
+    // Upcast the values in the context array.
+    $context['entity'] = $entity;
+    $context['field'] = $field;
+
+    return $context;
+  }
+
+}
diff --git a/modules/tax/src/Plugin/Field/FieldFormatter/TaxNumberDefaultFormatter.php b/modules/tax/src/Plugin/Field/FieldFormatter/TaxNumberDefaultFormatter.php
index 8c73da26..721c71cc 100644
--- a/modules/tax/src/Plugin/Field/FieldFormatter/TaxNumberDefaultFormatter.php
+++ b/modules/tax/src/Plugin/Field/FieldFormatter/TaxNumberDefaultFormatter.php
@@ -2,9 +2,12 @@
 
 namespace Drupal\commerce_tax\Plugin\Field\FieldFormatter;
 
+use Drupal\commerce\UrlData;
+use Drupal\Component\Serialization\Json;
 use Drupal\Core\Field\FieldItemListInterface;
 use Drupal\Core\Field\FormatterBase;
 use Drupal\Core\Form\FormStateInterface;
+use Drupal\Core\Url;
 
 /**
  * Plugin implementation of the 'commerce_tax_number_default' formatter.
@@ -66,6 +69,7 @@ class TaxNumberDefaultFormatter extends FormatterBase {
       'failure' => $this->t('Failure'),
       'unknown' => $this->t('Unknown'),
     ];
+    $entity = $items->getEntity();
 
     $elements = [];
     foreach ($items as $delta => $item) {
@@ -75,6 +79,33 @@ class TaxNumberDefaultFormatter extends FormatterBase {
       ];
       if ($this->getSetting('show_verification')) {
         $element['#attached']['library'][] = 'commerce_tax/tax_number';
+        $context = UrlData::encode([
+          $entity->getEntityTypeId(),
+          $entity->id(),
+          $this->fieldDefinition->getName(),
+          $this->viewMode,
+        ]);
+
+        if ($item->verification_result) {
+          $element['value'] = [
+            '#type' => 'link',
+            '#title' => $item->value,
+            '#url' => Url::fromRoute('commerce_tax.verification_result', [
+              'tax_number' => $item->value,
+              'context' => $context,
+            ]),
+            '#attributes' => [
+              'class' => [
+                'use-ajax',
+              ],
+              'data-dialog-type' => 'modal',
+              'data-dialog-options' => Json::encode([
+                'width' => 500,
+                'title' => $item->value,
+              ]),
+            ],
+          ];
+        }
         if ($item->verification_state && isset($states[$item->verification_state])) {
           $element['verification_state'] = [
             '#type' => 'html_tag',
diff --git a/modules/tax/tests/src/FunctionalJavascript/TaxNumberTest.php b/modules/tax/tests/src/FunctionalJavascript/TaxNumberTest.php
index b78316d0..ed8739e8 100644
--- a/modules/tax/tests/src/FunctionalJavascript/TaxNumberTest.php
+++ b/modules/tax/tests/src/FunctionalJavascript/TaxNumberTest.php
@@ -2,9 +2,11 @@
 
 namespace Drupal\Tests\commerce_tax\FunctionalJavascript;
 
+use Drupal\commerce\UrlData;
 use Drupal\commerce_order\Entity\Order;
 use Drupal\commerce_order\Entity\OrderItem;
 use Drupal\commerce_tax\Plugin\Commerce\TaxNumberType\VerificationResult;
+use Drupal\Core\Url;
 use Drupal\field\Entity\FieldConfig;
 use Drupal\profile\Entity\Profile;
 use Drupal\Tests\commerce\FunctionalJavascript\CommerceWebDriverTestBase;
@@ -113,7 +115,7 @@ class TaxNumberTest extends CommerceWebDriverTestBase {
   public function testWidget() {
     $this->drupalGet($this->order->toUrl('edit-form'));
     $this->getSession()->getPage()->pressButton('billing_edit');
-    $this->waitForAjaxToFinish();
+    $this->assertSession()->assertWaitOnAjaxRequest();
 
     // Confirm that the field is present for the allowed country (RS).
     $this->assertSession()->fieldExists('Tax number');
@@ -131,7 +133,7 @@ class TaxNumberTest extends CommerceWebDriverTestBase {
     // Confirm that not changing the tax number does not re-verify the number.
     $this->drupalGet($this->order->toUrl('edit-form'));
     $this->getSession()->getPage()->pressButton('billing_edit');
-    $this->waitForAjaxToFinish();
+    $this->assertSession()->assertWaitOnAjaxRequest();
     $this->assertSession()->fieldValueEquals('Tax number', '601');
     $this->submitForm([], 'Save');
 
@@ -142,7 +144,7 @@ class TaxNumberTest extends CommerceWebDriverTestBase {
     // Confirm that changing the tax number re-verifies the number.
     $this->drupalGet($this->order->toUrl('edit-form'));
     $this->getSession()->getPage()->pressButton('billing_edit');
-    $this->waitForAjaxToFinish();
+    $this->assertSession()->assertWaitOnAjaxRequest();
     $this->assertSession()->fieldValueEquals('Tax number', '601');
     $this->getSession()->getPage()->fillField('Tax number', '603');
     $this->submitForm([], 'Save');
@@ -158,9 +160,9 @@ class TaxNumberTest extends CommerceWebDriverTestBase {
     // Confirm that changing the country changes the tax number type.
     $this->drupalGet($this->order->toUrl('edit-form'));
     $this->getSession()->getPage()->pressButton('billing_edit');
-    $this->waitForAjaxToFinish();
+    $this->assertSession()->assertWaitOnAjaxRequest();
     $this->getSession()->getPage()->selectFieldOption('Country', 'ME');
-    $this->waitForAjaxToFinish();
+    $this->assertSession()->assertWaitOnAjaxRequest();
     $this->getSession()->getPage()->fillField('City', 'Podgorica');
     $this->assertSession()->fieldValueEquals('Tax number', '603');
     $this->submitForm([], 'Save');
@@ -176,9 +178,9 @@ class TaxNumberTest extends CommerceWebDriverTestBase {
     // Confirm that selecting a non-allowed country removes the field.
     $this->drupalGet($this->order->toUrl('edit-form'));
     $this->getSession()->getPage()->pressButton('billing_edit');
-    $this->waitForAjaxToFinish();
+    $this->assertSession()->assertWaitOnAjaxRequest();
     $this->getSession()->getPage()->selectFieldOption('Country', 'MK');
-    $this->waitForAjaxToFinish();
+    $this->assertSession()->assertWaitOnAjaxRequest();
     $this->getSession()->getPage()->fillField('City', 'Skopje');
     $this->assertSession()->fieldNotExists('Tax number');
     $this->submitForm([], 'Save');
@@ -201,6 +203,7 @@ class TaxNumberTest extends CommerceWebDriverTestBase {
     $rendered_field = $this->getSession()->getPage()->find('css', '.field--name-tax-number');
     $this->assertContains('Tax number', $rendered_field->getHtml());
     $this->assertContains('122', $rendered_field->getHtml());
+    $this->assertFalse($rendered_field->hasLink('122'));
     $state_field = $rendered_field->find('css', '.commerce-tax-number__verification-icon');
     $this->assertEmpty($state_field);
 
@@ -209,55 +212,70 @@ class TaxNumberTest extends CommerceWebDriverTestBase {
       'value' => '123',
       'verification_state' => VerificationResult::STATE_SUCCESS,
       'verification_timestamp' => strtotime('2019/08/08'),
-      'verification_result' => ['verification_id' => '123456'],
+      'verification_result' => ['name' => 'Centarro LLC'],
     ]);
     $this->customerProfile->save();
 
     $this->drupalGet($this->order->toUrl('canonical'));
     $rendered_field = $this->getSession()->getPage()->find('css', '.field--name-tax-number');
     $this->assertContains('Tax number', $rendered_field->getHtml());
-    $this->assertContains('123', $rendered_field->getHtml());
+    $this->assertTrue($rendered_field->hasLink('123'));
     $state_field = $rendered_field->find('css', '.commerce-tax-number__verification-icon');
     $this->assertNotEmpty($state_field);
     $this->assertEquals('Verification state: Success', $state_field->getAttribute('title'));
     $this->assertTrue($state_field->hasClass('commerce-tax-number__verification-icon--success'));
 
+    // Confirm that the verification result can be viewed.
+    $this->clickLink('123');
+    $this->assertSession()->pageTextContains('August 8, 2019 - 00:00');
+    $this->assertSession()->pageTextContains('Centarro LLC');
+
     $this->customerProfile->set('tax_number', [
       'type' => 'serbian_vat',
       'value' => '124',
       'verification_state' => VerificationResult::STATE_FAILURE,
       'verification_timestamp' => strtotime('2019/08/09'),
-      'verification_result' => ['verification_id' => '123457'],
+      'verification_result' => ['name' => 'Google LLC'],
     ]);
     $this->customerProfile->save();
 
     $this->drupalGet($this->order->toUrl('canonical'));
     $rendered_field = $this->getSession()->getPage()->find('css', '.field--name-tax-number');
     $this->assertContains('Tax number', $rendered_field->getHtml());
-    $this->assertContains('124', $rendered_field->getHtml());
+    $this->assertTrue($rendered_field->hasLink('124'));
     $state_field = $rendered_field->find('css', '.commerce-tax-number__verification-icon');
     $this->assertNotEmpty($state_field);
     $this->assertEquals('Verification state: Failure', $state_field->getAttribute('title'));
     $this->assertTrue($state_field->hasClass('commerce-tax-number__verification-icon--failure'));
 
+    // Confirm that the verification result can be viewed.
+    $this->clickLink('124');
+    $this->assertSession()->pageTextContains('August 9, 2019 - 00:00');
+    $this->assertSession()->pageTextContains('Google LLC');
+
     $this->customerProfile->set('tax_number', [
       'type' => 'serbian_vat',
       'value' => '125',
       'verification_state' => VerificationResult::STATE_UNKNOWN,
       'verification_timestamp' => strtotime('2019/08/10'),
-      'verification_result' => ['verification_id' => '123458'],
+      'verification_result' => ['error' => 'http_429'],
     ]);
     $this->customerProfile->save();
 
     $this->drupalGet($this->order->toUrl('canonical'));
     $rendered_field = $this->getSession()->getPage()->find('css', '.field--name-tax-number');
     $this->assertContains('Tax number', $rendered_field->getHtml());
-    $this->assertContains('125', $rendered_field->getHtml());
+    $this->assertTrue($rendered_field->hasLink('125'));
     $state_field = $rendered_field->find('css', '.commerce-tax-number__verification-icon');
     $this->assertNotEmpty($state_field);
     $this->assertEquals('Verification state: Unknown', $state_field->getAttribute('title'));
     $this->assertTrue($state_field->hasClass('commerce-tax-number__verification-icon--unknown'));
 
+    // Confirm that the verification result can be viewed.
+    $this->clickLink('125');
+    $this->assertSession()->pageTextContains('August 10, 2019 - 00:00');
+    $this->assertSession()->pageTextContains('Too many requests.');
+
     // Confirm that invalid verification states are ignored.
     $this->customerProfile->set('tax_number', [
       'type' => 'serbian_vat',
@@ -276,4 +294,90 @@ class TaxNumberTest extends CommerceWebDriverTestBase {
     $this->assertEmpty($state_field);
   }
 
+  /**
+   * Tests access control for the verification endpoints.
+   */
+  public function testVerificationEndpointAccess() {
+    $this->customerProfile->set('tax_number', [
+      'type' => 'serbian_vat',
+      'value' => '124',
+      'verification_state' => VerificationResult::STATE_FAILURE,
+      'verification_timestamp' => strtotime('2019/08/09'),
+      'verification_result' => ['name' => 'Google LLC'],
+    ]);
+    $this->customerProfile->save();
+
+    // Valid url.
+    $this->drupalGet(Url::fromRoute('commerce_tax.verification_result', [
+      'tax_number' => '124',
+      'context' => UrlData::encode([
+        'profile', $this->customerProfile->id(), 'tax_number', 'default',
+      ]),
+    ]));
+    $this->assertSession()->pageTextNotContains('Access Denied');
+    $this->assertSession()->pageTextContains('Google LLC');
+
+    // The tax_number doesn't match the one on the parent entity.
+    $this->drupalGet(Url::fromRoute('commerce_tax.verification_result', [
+      'tax_number' => '125',
+      'context' => UrlData::encode([
+        'profile', $this->customerProfile->id(), 'tax_number', 'default',
+      ]),
+    ]));
+    $this->assertSession()->pageTextContains('Access Denied');
+
+    // Invalid context.
+    $this->drupalGet(Url::fromRoute('commerce_tax.verification_result', [
+      'tax_number' => '124',
+      'context' => 'INVALID',
+    ]));
+    $this->assertSession()->pageTextContains('Access Denied');
+
+    // Incorrect number of parameters.
+    $this->drupalGet(Url::fromRoute('commerce_tax.verification_result', [
+      'tax_number' => '124',
+      'context' => UrlData::encode([
+        'profile',
+      ]),
+    ]));
+    $this->assertSession()->pageTextContains('Access Denied');
+
+    // Invalid entity type.
+    $this->drupalGet(Url::fromRoute('commerce_tax.verification_result', [
+      'tax_number' => '124',
+      'context' => UrlData::encode([
+        'profile2', $this->customerProfile->id(), 'tax_number', 'default',
+      ]),
+    ]));
+    $this->assertSession()->pageTextContains('Access Denied');
+
+    // Invalid entity.
+    $this->drupalGet(Url::fromRoute('commerce_tax.verification_result', [
+      'tax_number' => '124',
+      'context' => UrlData::encode([
+        'profile', '99', 'tax_number', 'default',
+      ]),
+    ]));
+    $this->assertSession()->pageTextContains('Access Denied');
+
+    // Invalid field.
+    $this->drupalGet(Url::fromRoute('commerce_tax.verification_result', [
+      'tax_number' => '124',
+      'context' => UrlData::encode([
+        'profile', $this->customerProfile->id(), 'address', 'default',
+      ]),
+    ]));
+    $this->assertSession()->pageTextContains('Access Denied');
+
+    // No access to parent entity.
+    $this->drupalLogout();
+    $this->drupalGet(Url::fromRoute('commerce_tax.verification_result', [
+      'tax_number' => '124',
+      'context' => UrlData::encode([
+        'profile', $this->customerProfile->id(), 'tax_number', 'default',
+      ]),
+    ]));
+    $this->assertSession()->pageTextContains('Access Denied');
+  }
+
 }
diff --git a/src/UrlData.php b/src/UrlData.php
new file mode 100644
index 00000000..876e8649
--- /dev/null
+++ b/src/UrlData.php
@@ -0,0 +1,45 @@
+<?php
+
+namespace Drupal\commerce;
+
+/**
+ * Encodes and decodes array data in a URL-safe way.
+ */
+final class UrlData {
+
+  /**
+   * Encodes the given data.
+   *
+   * @param array $data
+   *   The data.
+   *
+   * @return string
+   *   The encoded data.
+   */
+  public static function encode(array $data) {
+    $data = json_encode($data);
+    // URL-safe Base64 encoding (base64url).
+    $data = str_replace(['+', '/', '='], ['-', '_', ''], base64_encode($data));
+
+    return $data;
+  }
+
+  /**
+   * Decodes the given data.
+   *
+   * @param string $data
+   *   The encoded data.
+   *
+   * @return array|false
+   *   The decoded data, or FALSE if decoding failed.
+   */
+  public static function decode($data) {
+    $data = base64_decode(str_replace(['-', '_'], ['+', '/'], $data));
+    if ($data) {
+      $data = json_decode($data, TRUE);
+    }
+
+    return is_array($data) ? $data : FALSE;
+  }
+
+}
diff --git a/tests/src/Unit/UrlDataTest.php b/tests/src/Unit/UrlDataTest.php
new file mode 100644
index 00000000..2d3b78a5
--- /dev/null
+++ b/tests/src/Unit/UrlDataTest.php
@@ -0,0 +1,31 @@
+<?php
+
+namespace Drupal\Tests\commerce\Unit;
+
+use Drupal\commerce\UrlData;
+use Drupal\Tests\UnitTestCase;
+
+/**
+ * @coversDefaultClass \Drupal\commerce\UrlData
+ * @group commerce
+ */
+class UrlDataTest extends UnitTestCase {
+
+  /**
+   * ::covers encode
+   * ::covers decode.
+   */
+  public function testEncodeDecode() {
+    $data = ['commerce_product', '1'];
+    $encoded_data = UrlData::encode($data);
+    $this->assertInternalType('string', $encoded_data);
+
+    $decoded_data = UrlData::decode($encoded_data);
+    $this->assertInternalType('array', $decoded_data);
+    $this->assertSame($data, $decoded_data);
+
+    $invalid_data = UrlData::decode('INVALID');
+    $this->assertFalse($invalid_data);
+  }
+
+}