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About

The audit trail your sustainability numbers can stand on.

Atteston exists to make sustainability disclosures as defensible as financial ones — captured, evidenced and locked through controls a registered assurer can re-perform.

Why we built it

Reporting shouldn't mean starting over every year.

BRSR and ESG reporting has too often meant rebuilding a spreadsheet maze each cycle — numbers no one can trace, evidence no one can find, and an audit that starts from scratch. Atteston replaces that with a single governed ledger: data captured once, computed transparently, and disclosed with a complete trail from the filed figure back to its source.

We started India-first with SEBI BRSR Core and greenhouse-gas accounting, and we're building toward the frameworks that matter next. The foundation is deliberately framework-neutral so the same data can serve whatever you're required to disclose.

Financial numbers earn a signature. Sustainability numbers should too.

Draft Confirmed Locked
The control invariant
1
A human confirmsevery value is checked against its source snippet
2
A reviewer clearsmaker-checker segregation of duties, enforced in software
3
Evidence is linkedimmutable, content-addressed, independently verifiable
What we believe

Principles behind the product.

Principle 01

Evidence over assertion

Every disclosure should trace to a source. We build for the assurer in the room, not just the report on the page.

Principle 02

One system of record

Sustainability data belongs in one governed ledger — not scattered across spreadsheets, inboxes and shared drives.

Principle 03

Humans dispose

AI can accelerate the grind, but no number auto-finalises. A person confirms it and a reviewer clears it — always.

See the assurance ledger in action.

Book a walkthrough and we'll map Atteston to your reporting obligations.