def qr(update, context):
    if len(context.args) < 1:
        update.message.reply_text('Not enough arguments passed.')
        return False

    # validate address
    if len(context.args[0]) in [97, 108]:
        address = context.args[0]
    else:
        update.message.reply_text('This does not look like a valid Wownero address. Try again.')
        return False

    update.message.reply_text(f'https://wownero.club/address/{address}')