> For the complete documentation index, see [llms.txt](https://open-carbon-protocol.gitbook.io/ocp-methodology-requirements/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://open-carbon-protocol.gitbook.io/ocp-methodology-requirements/sections/14.-third-party-data-verification.md).

# 14. Third Party Data Verification

**All OCP project data must be verified by a third party before the OCP issues the relevant credits**. Data can be verified in three ways:

* In tandem (i.e. at the same time) as project validation and approve by the same Validator, if the project has only one issuance
* Verified manually by a Validator every time data is submitted
* From a pre-verified dMRV process, validated during project approval

{% embed url="<https://open-carbon-protocol.gitbook.io/ocp-handbook/projects/third-party-validation-and-verification>" %}

The methodology may lend itself to one or more of the verification approaches. The methodology curator must decide what options to allow project developers to use; if the approach is not listed in the methodology, it cannot be used by a project using the methodology.

***

*<mark style="color:$info;">Default text:</mark>*

<mark style="color:$info;">`“All OCP project data must be verified by a third party before the OCP issues the relevant credits. Data can be verified in three ways:`</mark>

1. <mark style="color:$info;">`In tandem (i.e. at the same time) as project validation and approve by the same Validator, if the project has only one issuance`</mark>
2. <mark style="color:$info;">`Verified manually by a Validator every time data is submitted`</mark>
3. <mark style="color:$info;">`From a pre-verified dMRV process, validated during project approval`</mark>

<mark style="color:$info;">`Details on the OCP Verification process, as well as requirements for verification partners, can be found in`</mark> [<mark style="color:$info;">`the OCP Handbook`</mark>](https://open-carbon-protocol.gitbook.io/ocp-handbook/projects/third-party-validation)<mark style="color:$info;">`.”`</mark>

\ <br>