Skip to main content
Public registry

Verify any credit

Every issued credit carries a unique serial number with full project lineage and a permanent retirement record. Anyone can verify any serial — no account, no request form.

Credits issued0tCO₂e / MCU per category
Credits retired0permanent records
Projects2from acceptance into review onward
Buffer pool0reserve for permanence

Figures are read live from the registry database. The programme is in pre-launch; no credits have been issued.

01 · Browse the registry
Project registerEvery project on the MCC pipeline, from acceptance into review onward — issuance only follows independent verification and governance approval.Open →
Credit issuanceIssued batches with vintage, serial range and buffer allocation, each through the six-step MCC-200 pipeline, audit-logged in the registry database.Open →
Credit unit ledgerSerialised units — D1 serial with Luhn check digit, lifecycle status and Article 6 corresponding-adjustment status.Open →
Retirement registerEvery retirement recorded against the unit ledger under the contribution-first Claims Policy — no offsetting claims.Open →
Buffer poolThe permanence reserve — a project-specific share of every issuance withheld from circulation to cover reversal.Open →
02 · Anatomy of a serial
MCC-CC-F01-MEX0021-2026-00000001-3
MCCProgramme
CCCredit category
F01Methodology family
MEX0021Project designation — host country + index
2026Vintage year
00000001Unit index in range
3Luhn check digit — single-character tampering is detectable

The example serial illustrates the D1 format; it does not reference an issued credit.

03 · What the registry enforces

Lifecycle at the data layer

Every lifecycle transition is enforced and audit-logged in the registry database itself. Illegal state changes — a retired credit re-listed, an unverified issuance — are rejected, not flagged.

Retirement is final

A retirement writes a permanent record naming the beneficiary and the permitted contribution claim. Offsetting, neutrality and net-zero language is blocked at the point of retirement per the Claims Policy.

Article 6 transfers

Corresponding adjustment is supported for sovereign transfers where authorised by the host country; the authorisation reference travels on the serial record.