Woo-commerce Registration form add otp as custom field - php

Question

I want to add otp when user register on woo-commerce registration page, i have added custom field for phone number but i am not able to get any sources for otp in word-press i have my own API please if someone can share any resource
for finding it
It will be very helpful ...
function iconic_get_account_fields() {
return apply_filters( 'iconic_account_fields', array(
'user_url' => array(
'type' => 'text',
'label' => __( 'Phone' ),
'placeholder' => __( 'E.g. 9861234567', 'iconic' ),
'required' => true,
),
) );
}
function iconic_print_user_frontend_fields() {
$fields = iconic_get_account_fields();
foreach ( $fields as $key => $field_args ) {
woocommerce_form_field( $key, $field_args );
}
}
add_action( 'woocommerce_register_form', 'iconic_print_user_frontend_fields', 1 );
add_action( 'woocommerce_edit_account_form', 'iconic_print_user_frontend_fields', 10 ); // my account
function iconic_print_user_admin_fields() {
$fields = iconic_get_account_fields();
?>
<h2><?php _e( 'Additional Information', 'iconic' ); ?></h2>
<table class="form-table" id="iconic-additional-information">
<tbody>
<?php foreach ( $fields as $key => $field_args ) { ?>
<tr>
<th>
<label for="<?php echo $key; ?>"><?php echo $field_args['label']; ?></label>
</th>
<td>
<?php $field_args['label'] = false; ?>
<?php woocommerce_form_field( $key, $field_args ); ?>
</td>
</tr>
<?php } ?>
</tbody>
</table>
<?php
}
add_action( 'show_user_profile', 'iconic_print_user_admin_fields', 30 ); // admin: edit profile
add_action( 'edit_user_profile', 'iconic_print_user_admin_fields', 30 );
.