# BBIP Public Open Core Boundary - Revision 1.1

Open Core Release 001 contains only these released engineering components:

- DrillFlowCore 1.0.0
- BBIPEvidenceCore 1.0.0
- EFSTagCore 0.17.8
- ExplorationEvidenceCore 1.0.0

## Engineering split

| Engineering component | Open core | Remains proprietary |
|---|---|---|
| DrillFlowCore | Graph/document models; indexing/traversal; editing; validation; codecs/exporters; RigFlow interchange. | Diagnostic ranking/scoring; safety decision logic; machine/site reasoning packs. |
| BBIPEvidenceCore | Evidence/form/inventory/context schemas; attachments; roles; synchronisation interfaces. | Production backend; authentication/tenancy; audit authority; persistence/reconciliation implementation. |
| EFSTagCore | Tag definitions; opaque references; QR parsing/encoding; public bootstrap shapes; reference rendering. | Trust/authentication; operational/isolation authority; lifecycle/clone controls; customer/site policy and operational truth. |
| ExplorationEvidenceCore | Evidence/provenance/checksum/hash-chain/versioning primitives and neutral evidence schemas. | Thresholds; predicates; ranking/scoring; claims/decision logic; datasets and commercial intelligence. |

## Licence model

MPL-2.0 applies only to covered source actually distributed in the named component archives. BBIP retains copyright in BBIP-authored source and may separately license BBIP-owned code, or later BBIP-owned versions, under commercial or proprietary terms. Existing MPL-2.0 grants for previously released source remain effective. This release does not itself grant a separate commercial licence.