Source document library with assurance status

DitchCarbon keeps the source documents behind an organisation's emissions, each with its year and, for Scope 1, Scope 2 and Scope 3, the level of third party assurance the document carries, the assurer and the assurance statement.

Can I see the document a supplier's emissions figure came from, and how far it was assured?

Yes, and how far it was assured. Every document is listed with its year and three assurance columns, one per scope. Each cell states the level of assurance (reasonable, limited, unspecified or none), the scope it covers and the assurance provider the document names, with the assurance statement quoted, so you read the evidence rather than a tick.

The documents table in the DitchCarbon portal, listing an organisation's reports by year with separate Scope 1, Scope 2 and Scope 3 assurance columns.

Provenance is the first thing an auditor asks for and the last thing most systems can produce. Holding the documents themselves, rather than a citation, is what makes a figure checkable, and holding the assurance statement with them is what tells you how much weight the figure will bear.

The per scope assurance columns are the part that changes a conversation. Open any cell and it states the level of assurance the document carries for that scope, reasonable or limited, unspecified where an engagement is named without a level, or none, together with the assurer the document names and the sentence in which the opinion is given. An organisation whose Scope 1 and 2 were assured to a limited level but whose Scope 3 was not is visible as exactly that, rather than flattened into one assured label.

The library holds what organisations actually publish, which includes the same report in several languages, restated versions of the same year, and product level reports with no year attached. All of it is kept rather than deduplicated into a tidier but less complete set.

Every figure carries its source and change history, so the path from a reported total to the document behind it, and to the assurance that document carries, is a link rather than a request.

Old way
A citation, and a PDF somebody has to go and find.
new way
The document, with the assurance level, the assurer and the statement, per scope.

Common questions

What is the difference between reasonable and limited assurance on a source document?
Do you hold the documents themselves or just a citation?
Can I tell whether a supplier's Scope 3 figure was assured, and at what level?
Available plans
Collect + calculate
Analyse
Status
Live
Frameworks
CDP
ISO 14064
Last reviewed
September 18, 2026

See it on your own suppliers, portfolio or profile

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