To read a carbon credit serial number, start with its issuing registry and connect the code to the project, vintage, batch and current status. The code identifies a unit; assessing its origin and quantity also requires the supporting documents and reconciliation. A saved screenshot does not establish that the unit remains transferable today.
What the Carbonetica code identifies
The registry rules describe the format IT-SIC-{PROJECT_CODE}-{VINTAGE}-{BATCH}-{SEQUENCE}. Match the project code to its public page, the vintage to the documented period, the batch to the issuance lot and the sequence to the individual unit. Each credit represents one whole tonne of carbon dioxide equivalent.
Do not construct a presumed serial from a project name. Copy the actual code shown in the proposal or registry, retaining zeros and separators. Its prefix and structure do not constitute public certification or an EU ETS allowance.
Serial numbers, batches and quantities mean different things
A batch groups units for a project and vintage; an individual serial identifies one of those units. A proposal stating only a batch number may require a precise list or range to identify the credits concerned. Where several ranges are proposed, check for overlaps and confirm that they belong to the stated batches.
Compare the proposed quantity with the units actually identified. A project’s total quantity is not the seller’s available balance. A unit mentioned in a document has not necessarily been issued and may not be transferable when you enquire.
From the certificate to the units: read the reconciliation
At Carbonetica, the certificate total and approved adjustments feed into the reconciliation. Quantities are not rounded up: fractional remainders remain documented and are not issued. If the certificate, monitoring records and serialized quantity differ, look for the note explaining the relationship instead of adjusting the total yourself.
For dates, use our carbon credit vintage guide. This guide focuses on following unit identity from documented quantity to batch and serial number, retaining the references to document versions.
A practical check before proceeding
- Record the registry, full code and consultation date.
- Open the project page and compare its code, vintage and relevant documents.
- Check the batch, unit list and proposed quantity.
- Read the current status and requested operation: transfer, retirement and cancellation have distinct meanings.
- Retain the references and check them again before the actual operation.
If credit consultation is temporarily suspended, review the available descriptive project pages and request clarification. A missing search result does not by itself establish that a credit is false or nonexistent. Avoid reconstructing its status from an old screenshot.
What a serial number cannot establish
Gold Standard’s Impact Registry illustrates how a serial accompanies a credit’s lifecycle. Each system has its own format. A unique code within Carbonetica does not by itself establish the absence of registration elsewhere, project climate quality or buyer neutrality.
Start with the public projects. If you find a discrepancy, ask Carbonetica for clarification, identifying the project, serial and document without unnecessary personal information. An enquiry does not reserve units or initiate transfers.