Anywhere your browser goes, Cothon goes.

One layer over every tab. Verify any claim, on any page or AI chat, against the sources you already trust, and save what matters, without ever leaving the page.

One layer. Every surface.

Cothon is not another place to go. It is a single verification layer over the places you already work: the model's answer, the page in front of you, and the source you want to keep.

AI assistant

The programme cut emissions by 40% in its first year.

ContradictedYour M&E report · p.8
In the model's answer

Catch what it gets wrong.

Check ChatGPT, Claude, Gemini, and Copilot output against your own sources inline, before any of it makes its way into your work.

the-climate-ledger.example

Adaptation funding reached $310M last year across the region.

ConfirmedInternal finance summary
On any page

Know before you cite it.

Test a figure in an article against your evidence base the moment you read it, not after it is already in your draft.

Save to project
PDFUNEP Adaptation Gap 2025
WEBThe Climate Ledger
Saved to Adaptation Finance 2026
In the source itself

Keep it, keep moving.

Save a page or a clip straight to a project, so the thing you trusted is there when you need to prove it.

Everything you check joins your team's record.

Every claim you verify and every source you save with the extension joins your team's shared evidence base and audit trail, the same record your whole organization works from.