Neven,
An inventory records emissions to the atmosphere and removals from the atmosphere to sinks [such as storage in forests, vegetation, and soils] of all the greenhouse gases [Carbon dioxide, methane, nitrous oxide, ozone, chlorofluorocarbons and hydrofluorocarbons]. It's a more formal expression of a carbon footprint.
This service is for anyone to use, but only people and enterprises we've verified will be published online, otherwise people could game the results. Scientists could use the service to make a permanent record of their research findings. We hope to move towards an interesting, aggregate ledger in the blockchain.
Most countries publish inventories, so we'll be grabbing those and publishing them.