{% if app.config.get('general/branding/provided_link') is not empty %}

    <footer id="bolt-footer" class="hidden-xs {% if global.request.cookies.get('sidebar') %}bolt-footer-hidden{% endif %}">
        {{ __('general.phrase.provided-by-colon') }}
        {{ app.config.get('general/branding/provided_link')|raw }} &ndash;
        <i class="fa fa-cog"></i> <b>Bolt {{ context.bolt_version }}</b>:
        <i class="fa fa-heart"></i > <a href="{{ path('about') }}">{{ __('general.about') }}</a> &ndash;
        <i class="fa fa-external-link-square"></i> <a href="http://bolt.cm" target="_blank">Bolt.cm</a>
    </footer>

{% else %}

    <footer id="bolt-footer" class="hidden-xs bolt-footer-mini {% if global.request.cookies.get('sidebar') %}bolt-footer-hidden{% endif %}">
        <i class="fa fa-cog"></i> <a href="http://bolt.cm" target="_blank">Bolt {{ context.bolt_version|replace({'alpha': 'α', ' beta ': 'β'}) }}</a> &ndash;
        <i class="fa fa-heart"></i > <a href="{{ path('about') }}">{{ __('general.about') }}</a>
    </footer>

{% endif %}

{% if app.config.get('general/branding/provided_link') is not empty %}

    <footer id="bolt-footer" class="hidden-xs {% if global.request.cookies.get('sidebar') %}bolt-footer-hidden{% endif %}">
        {{ __('general.phrase.provided-by-colon') }}
        {{ app.config.get('general/branding/provided_link')|raw }} &ndash;
        <i class="fa fa-cog"></i> <b>Bolt {{ constant('Bolt\\Version::VERSION') }}</b>:
        <i class="fa fa-heart"></i > <a href="{{ path('about') }}">{{ __('general.about') }}</a> &ndash;
        <i class="fa fa-external-link-square"></i> <a href="http://bolt.cm" target="_blank">Bolt.cm</a>
    </footer>

{% else %}

    <footer id="bolt-footer" class="hidden-xs bolt-footer-mini {% if global.request.cookies.get('sidebar') %}bolt-footer-hidden{% endif %}">
        <i class="fa fa-cog"></i> <a href="http://bolt.cm" target="_blank">Bolt {{ constant('Bolt\\Version::VERSION')|replace({'alpha': 'α', ' beta ': 'β'}) }}</a> &ndash;
        <i class="fa fa-heart"></i > <a href="{{ path('about') }}">{{ __('general.about') }}</a>
    </footer>

{% endif %}

Use constant() for Bolt version
Use constant() for Bolt version
