When you purchase carbon credits from a CarbonFix certified project, you can verify in our registry that this carbon credit was really retired. Just go to
Retired credits and double-check if the serial number of you carbon credit has been registered.
The "A" and "P" at the end of a serial number indicate you if the CO
2 of your credit is already fixed by the trees of the project or will still be fixed in future. When you have just purchased a carbon credit it normally is an "A". "A" stands for "ex-ante", whereby "P" stands for "ex-post". So, as soon as a certification has confirmed that the CO
2 of your credit has been absorbed by the trees, the last letter of your serial number will turn from an "A" into a "P".
In both cases, the "delivery period" of a serial number indicates
when the CO
2 was or will be fixed. In general, this "delivery period" is also called the "vintage year" of a credit.
Sample serial number:
CFS-VER-AR-100000000000390-01012017-31122017-1028-5885-MER-1-A
Explanation on the code of the credit:
| CFS |
CarbonFix Standard |
| VER |
Credit Type (Voluntary Emission Reduction) |
| AR |
Country code according to ISO |
| 100000000000390 |
Unique Markit Project ID |
| 01012017 |
Start of the delivery period |
| 31122017 |
End of the delivery period |
| 1028 |
First credit in this code |
| 5885 |
Last credit in this code |
| MER |
Markit Environmental Registry |
| 1 |
Amount of certifications in addition to CarbonFix |
| A |
Ex-ante credit |
| P |
Ex-post credit |
I cannot find my serial number under retired credits ?
There is the possibility to hide the serial number in the Markit registry. Therefore, please double-check with the company you have purchased the credits from to un-hide the serial number of your credits.
