# PROJECT B.R.A.I.N. > Boundary-governed Relational Archival & Invalidation Network: a persistent, model-independent cognitive architecture for memory, knowledge, provenance, belief revision, multimodal interaction, and adaptive intelligence. - [PROJECT B.R.A.I.N.](https://project-brain.rocheaiops.net/index.md): A persistent, model-independent cognitive architecture with accepted Phase 6 capabilities. - [About PROJECT B.R.A.I.N.](https://project-brain.rocheaiops.net/getting-started/about-project.md): Project ownership, purpose, current maturity, and collaboration context. - [What is B.R.A.I.N.?](https://project-brain.rocheaiops.net/getting-started/what-is-brain.md): Why the project exists and how it keeps knowledge durable, explainable, and revisable. - [Current state](https://project-brain.rocheaiops.net/getting-started/current-state.md): Accepted capabilities, current hosting boundary, and the next gate. - [How to use B.R.A.I.N.](https://project-brain.rocheaiops.net/getting-started/how-to-use-brain.md): A practical guide to teaching, recalling, correcting, and checking provenance. - [Project history](https://project-brain.rocheaiops.net/getting-started/project-history.md): How the project moved from early experiments to an accepted model-independent cognitive core. - [How B.R.A.I.N. thinks](https://project-brain.rocheaiops.net/concepts/how-brain-thinks.md): A plain-language account of retrieval, evidence, provider reasoning, response, and persistence. - [How B.R.A.I.N. remembers](https://project-brain.rocheaiops.net/concepts/how-brain-remembers.md): Durable session-independent memory with provenance and recoverable history. - [How B.R.A.I.N. learns](https://project-brain.rocheaiops.net/concepts/how-brain-learns.md): Implemented learning is explicit, attributable, and bounded; broader adaptation is future work. - [How B.R.A.I.N. changes its mind](https://project-brain.rocheaiops.net/concepts/how-brain-changes-its-mind.md): Corrections, conflicts, invalidation, and uncertainty without silent overwrite. - [Memory versus knowledge](https://project-brain.rocheaiops.net/concepts/memory-vs-knowledge.md): Personal records, source-backed document knowledge, provider knowledge, and transient answers have different roles. - [Trust and authority](https://project-brain.rocheaiops.net/concepts/trust-and-authority.md): Authority and confidence are separate, explicit dimensions of an interpretation. - [Provenance and lineage](https://project-brain.rocheaiops.net/concepts/provenance-and-lineage.md): The evidence trail behind a current answer, a correction, a citation, and a restore. - [Who knows what](https://project-brain.rocheaiops.net/concepts/who-knows-what.md): A clear ownership and persistence matrix for people, systems, providers, and future adapters. - [Architecture overview](https://project-brain.rocheaiops.net/architecture/overview.md): The accepted Phase 6 application, provider, development-memory, and recovery boundaries. - [Cognitive model](https://project-brain.rocheaiops.net/architecture/cognitive-model.md): Definitions and implementation status for events, records, evidence, belief state, and derived retrieval. - [Data lineage](https://project-brain.rocheaiops.net/architecture/data-lineage.md): How user statements, corrections, documents, citations, rebuilds, and restores retain traceability. - [Provider boundaries](https://project-brain.rocheaiops.net/architecture/provider-boundaries.md): What Gemini does, what persists locally, and the accepted Live governance limits. - [Canonical state](https://project-brain.rocheaiops.net/architecture/canonical-state.md): What must survive a provider change and what can be rebuilt. - [Conversation and Live](https://project-brain.rocheaiops.net/architecture/conversation-and-live.md): Exact text and voice lifecycle behavior through the shared Conversation Gateway. - [Document ingestion](https://project-brain.rocheaiops.net/architecture/document-ingestion.md): Accepted Phase 6 source-preserving document knowledge and grounded retrieval. - [Storage](https://project-brain.rocheaiops.net/architecture/storage.md): Database, artifact, secret, backup, and derived-index roles. - [Security and privacy](https://project-brain.rocheaiops.net/architecture/security-and-privacy.md): Private access, provider data boundaries, and the unqualified backup confidentiality item. - [Failure and recovery](https://project-brain.rocheaiops.net/architecture/failure-and-recovery.md): Failure behavior, data impact, and recovery routes. - [Backup and recovery](https://project-brain.rocheaiops.net/architecture/backup-and-recovery.md): Application recovery, isolated restore, and Basic Memory independence. - [Visual atlas](https://project-brain.rocheaiops.net/visuals/atlas.md): A visual-first guide to the accepted system and future boundary. - [B.R.A.I.N. in one picture](https://project-brain.rocheaiops.net/visuals/brain-in-one-picture.md): A visual explanation of current ownership, lineage, document knowledge, and private deployment boundaries. - [Validation overview](https://project-brain.rocheaiops.net/validation/overview.md): Acceptance is evidence-backed, environment-specific, and separate from operational status. - [Testing dossier](https://project-brain.rocheaiops.net/validation/testing-dossier.md): Evidence-backed tests across Phase 3 runtime qualification and Phases 4–6 accepted implementation. - [Defect register](https://project-brain.rocheaiops.net/validation/defect-register.md): Resolved implementation and harness defects found during qualification. - [Evidence index](https://project-brain.rocheaiops.net/validation/evidence-index.md): Primary acceptance evidence, its scope, and the repository location. - [Phase 3: runtime model verification](https://project-brain.rocheaiops.net/validation/phase-3.md): Real provider/model capability qualification before application integration. - [Phase 4: text Learning Spine](https://project-brain.rocheaiops.net/validation/phase-4.md): Private text teaching, fresh-session recall, correction lineage, recovery, and Basic Memory isolation. - [Phase 5: Gemini Live](https://project-brain.rocheaiops.net/validation/phase-5.md): Private real-provider Live integration through the existing Conversation Gateway. - [Phase 6: document knowledge](https://project-brain.rocheaiops.net/validation/phase-6.md): Source-preserving ingestion, grounded retrieval, index rebuild, and recovery. - [Deployment](https://project-brain.rocheaiops.net/operations/deployment.md): Scope deployment to the isolated Compose project and validate health before acceptance. - [Hostinger topology](https://project-brain.rocheaiops.net/operations/hostinger.md): Current V0.1 host roles and management boundary. - [Backup and restore](https://project-brain.rocheaiops.net/operations/backup-restore.md): Generate, copy, isolate, verify, then consider recovery. - [Disaster recovery](https://project-brain.rocheaiops.net/operations/disaster-recovery.md): Recover portable application and development-memory stores without conflating them. - [Secrets](https://project-brain.rocheaiops.net/operations/secrets.md): Server-side secret injection and safe verification practices. - [Provider operations](https://project-brain.rocheaiops.net/operations/provider-operations.md): Operate Gemini as a bounded, replaceable capability. - [Known operational limits](https://project-brain.rocheaiops.net/operations/known-operational-limits.md): A stable Operations entry point for the canonical limitations record. - [Learning field guide](https://project-brain.rocheaiops.net/field-guide/learning-field-guide.md): Progressive, evidence-aware exercises for the accepted system and future boundaries. - [First contact](https://project-brain.rocheaiops.net/field-guide/first-contact.md): A short first session that establishes the right expectations. - [Memory tests](https://project-brain.rocheaiops.net/field-guide/memory-tests.md): Exercises for durable recall, explanation, correction, uncertainty, and lineage. - [Knowledge tests](https://project-brain.rocheaiops.net/field-guide/knowledge-tests.md): Exercises for document source retention, citation, versioning, invalidation, and rebuild. - [Advanced tests](https://project-brain.rocheaiops.net/field-guide/advanced-tests.md): Accepted cross-modality and recovery exercises, plus explicitly future tests. - [V0.1 roadmap](https://project-brain.rocheaiops.net/roadmap/v0-1.md): Current accepted phases, next qualification gate, and deferred capability boundaries. - [Phase 7](https://project-brain.rocheaiops.net/roadmap/phase-7.md): Daily-use and operational qualification of the accepted V0.1 stack. - [Long-term roadmap](https://project-brain.rocheaiops.net/roadmap/long-term.md): Capability gates beyond V0.1, without dates or implied implementation. - [Self-improvement](https://project-brain.rocheaiops.net/roadmap/self-improvement.md): A future evaluation-and-rollback loop, not autonomous V0.1 behavior. - [World model and embodiment](https://project-brain.rocheaiops.net/roadmap/world-model.md): Future senses and adapters around the cognitive core. - [Decisions](https://project-brain.rocheaiops.net/decisions/index.md): The major accepted decisions and their canonical ADR record. - [Glossary](https://project-brain.rocheaiops.net/reference/glossary.md): Canonical vocabulary for cognition, evidence, state, and validation. - [Known limitations](https://project-brain.rocheaiops.net/reference/known-limitations.md): Unsupported, deferred, and not-yet-qualified capabilities. - [Sources](https://project-brain.rocheaiops.net/reference/sources.md): Current sources of truth, historical rationale, and external technology references. - [Phase acceptance criteria](https://project-brain.rocheaiops.net/reference/phase-acceptance-criteria.md): How approved, configured, tested, accepted, and operational claims differ. - [Terminology](https://project-brain.rocheaiops.net/reference/terminology.md): Language rules that prevent architecture and status drift. - [Visual system](https://project-brain.rocheaiops.net/reference/visual-system.md): The reusable visual grammar for canonical state, providers, evidence, and future work. - [Documentation baseline](https://project-brain.rocheaiops.net/reference/documentation-baseline.md): The post-Phase-6 Mintlify documentation baseline and its validation boundary.