Verification in Kyoto Protocol

In the case of Kyoto protocol, are the developed countries supposed to open their emission cuts to international verification. Has this been decided or are still under talks as I only found that verification for developing countries (voluntarily cutting emissions) to be open to international verification is being deliberated.

The Kyoto Protocol is an international treaty, which extends the 1992 United Nations Framework Convention on Climate Change (UNFCCC) that commits State Parties to reduce greenhouse gases emissions, based on the premise that (a) global warming exists and (b) man-made CO2 emissions have caused it.

The International Emission trading program,the Kyoto Protocol program, provides for trading across nations. This program, under the United Nations Framework Convention on Climate Change, launched phase 1 in 2007.

This program invests in low carbon technology to reduce emissions; participants buy permits from one another, or buy carbon offsets from projects in developing countries under the Clean Development Mechanism (CDM)

I wanted to understand the verification process....is it voluntary or international level?

Not just voluntary but verified through international mechanism by independent verification