When users make a payment towards their carbon offset in the app, PMWR (PayMyWay receipt) tokens are credited to their Stellar wallet.
Each PMWR in minted at a 1:1 ratio when a RETCBNR is sent to a locked wallet.
A RETCBNR is a retired carbon credit, or a retired CBNR. Each CBNR represents 1 metric carbon tonne (15 USD).
Therefore, when a user makes a payment towards their carbon impact in the app, a CBNR (carbon credit) is retired for each metric carbon tonne the user pays off. This is all tracked on the Stellar blockchain which can be viewed on the Stellar Expert block explorer, or through the "view on the blockchain" option in your Carbon Dashboard.