Governance
How OPDA is governed, who has authority, how standards are developed, and which rules are ratified, practised or still proposed. The wider context includes the Trust Over IP model, the Digital Markets, Competition and Consumers Act 2024 and coordination through the Digital Property Market Steering Group.
Decision records
Significant choices are recorded so their context, authority and consequences can be reviewed. See how the three decision registers fit together.
Architecture decisions
The technical choices behind the website, generator, delivery pipeline and modelling toolchain.
Open page What the model meansOntology decisions
The recorded rationale for significant ontology-modelling choices, including alternatives and consequences.
Open page What the programme recordsProgramme decisions
Meeting records and the programme-level decisions that emerge from steering, member and external working sessions.
Open pageUK initiative context
The legislation, departments, and forums that frame OPDA's mandate.
UK initiative — overview
Five-tier map: legislation → departments → forums → delivery → standards.
Legislation & policy
DMCC Act 2024, DUA Act 2025, Leasehold & Freehold Reform Act, Industrial Strategy.
Departments & bodies
MHCLG, DSIT, DBT, HMLR, NTSELAT, FCA, ICO — who does what.
Steering & coordination
DPMSG (13 founding members), Smart Data Council, HBSG.
OPDA the organisation
Who OPDA is, and the operational vehicle it delivers through.
OPDA member firms
13 founding members + association members, mapped to bounded contexts. One simple membership tier.
Trust Framework Sandbox
CLC + OPDA + Raidiam, RPF-funded. Operational today.
Standards landscape
How PDTF anchors itself to external trust and data-governance frameworks.
ToIP governance model
The 4 layers, mapped to OPDA's artefacts. Why ToIP fits a federated trust framework.
Strategic alignment
HMLR Strategy 2022+, DSIT National Data Strategy, DVSTF, W3C VC, ToIP — how PDTF aligns.
OPDA's rules
Constitutional rules, current procedures and clearly labelled proposals. A page describing a proposal does not itself make that proposal authoritative.
Standards lifecycle & ratification
How evidence earns human consensus, passes public and independent review, and becomes a ratified OPDA Standard.
Change management
Constitutional change through the General Assembly and the current 8-step schema implementation procedure.
Release versioning & retirement
Current version domains and the remaining rules for compatibility, deprecation, support and retirement.
Conformance & certification
Self-certification today (3-person panel, 80% pass mark). Planned technical conformance follows the Open Banking pattern.
Accreditation Directory
Two-axis maturity view per member firm — AL coverage + capability scores. Full spec in ADR 0004.
Risk & liability
Articles cap member liability at £1; framework spec is MIT/AS-IS. Downstream liability still open.
Operating Model
How the framework runs day-to-day: who's accountable, when meetings happen, who engages with stakeholders, how unstructured attachments flow. Adopts DCAM v3's "Operating Model" component name directly.
Data stewardship & decision rights
Domain Working Groups own local meaning; Interoperability owns common boundaries and mappings; independent functions verify; authorised OPDA governance ratifies.
Meeting cadence & feedback
Meeting cadence, feedback channels, issue disposition, public review and the 10-year constitutional decision-record baseline.
Stakeholder engagement
Broad standards participation for members, invited non-members, regulators, government and the public—without confusing contribution with corporate authority.
Overlay attachments
Per-attachment policy across v3 overlays (TA10 plans, EPCs, leasehold packs, photographs). File formats, signing, retention, consent.
Quality & security
Cross-cutting frameworks every member firm reports against. Fills the two largest gaps in OPDA's published rules (per ADR 0001).
Data quality framework
Six dimensions — accuracy, completeness, consistency, timeliness, uniqueness, validity. Per-claim measurement; quarterly reporting via the Accreditation Directory.
Data security framework
KYC/KYB, DID key management, signature verification, revocation, audit logging. Policy + checklist + audit profile per control.
Status at a glance
Status here describes the maturity of the website page or proposal—not the maturity of an ontology, schema or standards release.
| Artefact | Status | Where |
|---|---|---|
| UK initiative overview | ✅ Built | /governance/uk-initiative |
| Legislation & policy backbone | ✅ Built | /governance/legislation |
| Departments & bodies | ✅ Built | /governance/departments |
| Steering & coordination forums | ✅ Built | /governance/steering-forums |
| OPDA member firms | ✅ Built | /governance/opda-members |
| Trust Framework Sandbox | ✅ Built | /governance/sandbox |
| ToIP governance model | ✅ Built | /governance/toip-governance |
| Strategic alignment | ✅ Built | /governance/strategic-alignment |
| Conformance & certification | ✅ Draft | /governance/conformance-scheme |
| Accreditation Directory | 📋 Spec (ADR 0004) · ✅ Draft page | /governance/accreditation-directory |
| Change management | ✅ Draft | /governance/change-management |
| Standards lifecycle & ratification | ⚠️ Proposed — not yet operative | /governance/standards-lifecycle |
| Release versioning & retirement | ✅ Draft page · policy incomplete | /governance/lifecycle-versioning |
| Risk & liability | ✅ Draft | /governance/risk-liability |
| Data stewardship & decision rights | ⚠️ Proposed operating model | /governance/data-stewardship |
| Meetings, feedback & decision records | ⚠️ Mixed status · proposal clearly labelled | /governance/meetings-and-feedback |
| Stakeholder engagement | ⚠️ Mixed status · proposal clearly labelled | /governance/stakeholder-engagement |
| Overlay attachments policy | 🚧 Stub · Technical WG | /governance/overlay-attachments |
| Data quality framework | ✅ Draft · C&R WG | /governance/data-quality |
| Data security framework | ✅ Draft · C&R WG | /governance/data-security |
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