A registry-controlled, on-chain system of record. Every credit is provably backed; every retirement is permanent and publicly verifiable. Double-counting is structurally impossible.
| Registry | Issued | Circulating | Retired | PoR invariant |
|---|
| Registry | Project | Method | Vintage | Serials | Issued | Circulating | Retired | Status |
|---|
Permanent, append-only. Each entry closes the loop to the registry's own retirement reference.
| Beneficiary | tCO2e | Reason | Registry ref | Retirement ID | Proof hash | Certificate |
|---|
Point any dApp at these addresses and call latestRoundData() — same interface as a price feed.