LIVEUTC —GOLD · XAU/USD …POLYGON BLOCK …AI ATTESTATIONS …PROOFS ANCHORED …recompute anything · no verification, no trust
Carbon · the accountability layer

Bond the claim,
not the trust.

A carbon claim is only as good as the trust behind it. Raters disagree, registries get questioned, and a buyer is left to take the number on faith. VPAY makes a carbon claim bonded, challengeable, and recomputable on a public blockchain — accountability anyone can verify, not a number you have to believe.

No verification, no trust.

Book a 15-minute call →See how it works
GH-KWAHU-REFOR-2026 BONDED
12,480 tCO₂e
claimed · this period
Reasoner bondstaked · slashable
Challenge window● open · anyone may contest
recompute → matches anchor · 0x6a99…1C5c6
01 — the problem

The market is fleeing claims
it can't verify.

The same project earns a high rating from one house and a low one from another — and not one of them stakes anything on being right. The claim is an assertion, and an assertion is what greenwashing feeds on. As authenticity becomes legally load-bearing, "trust us" stops being good enough.

High & low

Ratings without skin in the game

The same project routinely gets contradictory ratings — and none of them bonds its number.

Rater divergence is well documented
2027

Authenticity is now the law

CORSIA becomes mandatory; Article 6 corresponding adjustments make a credit's integrity a compliance obligation.

ICAO CORSIA · Paris Agreement Art. 6
Buyer-paid

A willing payer

Buyers and regulators increasingly will not accept a claim they cannot independently verify.

A trust cost the market is pricing
02 — how it works

Accountability, not just a number.

We don't measure or rate the carbon — we make whoever did accountable for it. We prove who stood behind a claim and staked something on it. That is the honest, defensible thing to verify.

STEP 01

Bond the claim

Whoever makes a carbon claim stakes a bond they lose if it is false. Skin in the game, on-chain.

STEP 02

Open the challenge

Anyone can challenge a bonded claim within its window. A successful challenge is rewarded; a false claim is slashed.

STEP 03

Anchor it public

The claim is sealed and written to a public blockchain — permanent, timestamped, tamper-evident.

STEP 04

Recompute it

The proof is open math, not a private database. A buyer, an auditor, a regulator each verifies it themselves.

03 — don't take our word for it

The math is the audit.
Recompute it yourself.

Every bonded claim becomes a hash written on-chain. Take the claim data, hash it again, and check it matches — right here, in your browser.

V·PASS
VPAY Proof Passport · Carbon claim · Kwahu
VPP
POLYGON · 137
Project
GH-KWAHU-REFOR-2026
Claimed
12,480 tCO₂e · this period
Reasoner bond
staked · slashable
Challenge window
open · anyone may contest
Stored on-chaincomputing…
Recomputed here— press verify —
✓ the claim verifies itself
P<VPAYCARBON<KWAHU<REFOR<2026<<<<<<<<
12480TCO2E<2026H1<BONDED<CHALLENGEABLE<<<<4

SHA-256 over the sample claim, computed locally. The live contract uses keccak-256 over canonical bytes — same principle, recompute and compare.

04 — who it's for

A neutral rail — for everyone
who touches the claim.

This isn't another rating to argue with. It's the layer that makes any rating, measurement, or credit accountable. Raters are customers, not just rivals — bonding a rating is how it earns the trust the rest can't match.

Ratings agenciesCarbon registriesProject developersCredit buyers & corporatesAuditors & verifiersRegulators & standards bodiesdMRV providers
Where we stand, plainly: the accountability rails — bond, challenge, anchor, recompute — are real and live on Polygon Mainnet. The first carbon design partner and any real-project figures are not yet in place; we're choosing partners now. Demonstrations use illustrative data. We claim no live pilots, partnerships, or endorsements, in any vertical. See the registry on Polygonscan ↗
On the $SOV token: carbon is a verification service — a bonded, recomputable layer over claims others make. It is a fee-earning service, not backing for the $SOV token. Only physical gold, as real hard-asset backing, mints $SOV. A bonded carbon claim never does.
05 — questions

Carbon verification, answered.

What is a bonded carbon claim?
A carbon claim — tonnes of CO₂ reduced or removed — that the party making it backs with a slashable stake they lose if it is proven false. The claim, its inputs and its hash are anchored on a public blockchain, so anyone can challenge it and recompute the result. It turns "trust the number" into "verify the number."
How can you verify a carbon credit independently?
Take the underlying record, hash it with the same method, and check it matches the hash anchored on-chain. If it matches, the record has not changed since it was sealed. VPAY makes every claim recomputable in your browser — there is no central database you have to trust.
Who is accountable when two carbon raters disagree?
Today, usually no one — raters issue scores but stake nothing on them. VPAY adds an accountability layer: whoever stands behind a claim posts a slashable bond and opens a challenge window. Accountability becomes on-chain and contestable, not merely asserted.
Does VPAY issue, rate or measure carbon credits?
No. Measurement (dMRV) and rating already exist. VPAY is the bonded accountability layer on top — it proves who made a claim, that they staked something on it, and that anyone can recompute it. Raters and registries are potential customers, not competitors.
How does this fit CORSIA and Article 6?
As authenticity becomes legally load-bearing — CORSIA mandatory from 2027, Article 6 corresponding adjustments — a claim's integrity becomes a compliance obligation. A bonded, recomputable record gives buyers, auditors and regulators a proof they can check themselves.
Is the engine actually live?
The seal → bond → challenge → recompute engine is live and source-verified on Polygon Mainnet today, and you can recompute a sample claim on this page. We are pre-revenue, selecting a small number of design partners, and claim no certifications, pilots or endorsements.
06 — work with us

Let's bond your first carbon claim.

If you rate, issue, develop, buy, audit or regulate carbon — and you'd rather your claims be verifiable than merely trusted — let's talk. We're selecting a small number of design partners now.

or email cco@ecoventafrica.com