Geospatial Building Block

GBB combines reusable geospatial processing, declared contracts, typed outputs, execution evidence and optional provenance.

Version 1.0

• Core conformance class - under development.
• Core requirements class.
• Provenance conformance class - draft, not advertised as implemented.
• Provenance requirements class.
• Job evidence JSON Schema.
• Processing activity provenance JSON Schema.
• Job evidence example.
• Processing activity provenance example.

The conformance specifications are local GBB specifications, not independent OGC certification. The implementation reuses selected OGC Building Blocks.

Reference implementation and tests are maintained separately.

License

Apache License 2.0. Copyright 2026 4113 Engineering.