Blockchain & transparency

Trust isn’t claimed: it’s verified

Every MarchioGreen certificate lives on the public Polygon blockchain. It cannot be altered, duplicated or deleted — and anyone can check its authenticity.

01

Immutable

Once recorded, the certificate can no longer be modified by anyone.

02

Public

Verification happens directly on Polygonscan, with no intermediaries or blind trust.

03

Low impact

Polygon is a low-energy network, consistent with our mission.

How the token works

We adopt an ERC-1155 standard that separates stock from certificates.

Credit stock

Available CO₂ credits are recorded on-chain as a verifiable quantity.

Certificate NFT

Each issued certificate is a unique token that “draws” from the stock and carries the company’s data.

How verification works

  1. 1 Open the public certificate page
  2. 2 Check the data: company, CO₂ amount, date
  3. 3 Follow the link to the transaction on Polygonscan

Want to see a real certificate?

Search for an existing certificate and try the public verification.

Verify a certificate