# Coverage Overview

growthepie coverage changes over time, so the live source of truth is always the API itself. Use `master.json` for chain and DA coverage, and use `labels/projects.json` for project coverage.

## Key Facts

* Live chain coverage source: `master.json.chains`
* Live DA coverage source: `master.json.da_layers` and `master.json.da_metrics`
* Live project coverage source: `labels/projects.json`

## Related Pages

* [Supported Chains And origin\_key](/entity-coverage-reference/entity-coverage-reference/supported-chains-and-origin-key.md)
* [Projects And owner\_project](/entity-coverage-reference/entity-coverage-reference/projects-and-owner-project.md)
* [Data Availability Layers And DA Metrics](/entity-coverage-reference/entity-coverage-reference/data-availability-layers-and-da-metrics.md)


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