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Type-appropriate aggregation verified: mode for classification variables (cloud/aerosol flags), mean for continuous variables (optical depth, backscatter), quadrature for uncertainty variables. DGGS-Zarr round-trip verified. WGS84 geodetic placement provided by healpix-geo. Reproducible Pixi environment published with the release. https://w3id.org/sciencelive/np/RAcHVf4mO1B4E-S4qx3obilKj5vBXqajmgscykqUCcsg8/earthcare-dggs-outcome https://w3id.org/sciencelive/o/terms/hasLimitationsDescription This outcome reflects the first implementation of the claim. Independent third-party replication using different software stacks (e.g., alternative DGGS libraries, non-Python implementations) would strengthen confidence further. Performance characteristics (memory, throughput) have not been systematically benchmarked across full-orbit or multi-day product volumes. BBR products were not tested in the v0.1.0 release. 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