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Sankarshan Mukhopadhyay

Building executable governance, authority-control planes, and assurance infrastructure

I design specifications, protocols, schemas, conformance systems, and reference implementations for digital trust and agentic systems. The work focuses on making authority, delegation, constraints, revocation, evidence, accountability, and redress explicit enough to be implemented, tested, audited, and independently challenged.

Core premise: trust becomes infrastructure only when authority, constraints, revocation, evidence, and redress are operational, enforceable, and independently verifiable.

Portfolio validation Portfolio documentation Code license: Apache-2.0 Content license: CC BY-NC-SA 4.0

Explore the work

Trust frameworks · Governance and authority · Agent infrastructure · Policy execution · Assurance and RAHP · Terminology · Portfolio dashboard

This profile presents a curated trust-infrastructure portfolio, not an exhaustive inventory of every public repository on this GitHub account. Portfolio membership, maturity, lifecycle, provenance, and authority are governed explicitly rather than inferred from repository activity.

Start here

If you are trying to… Start with
Design or assess a national or multi-sector digital trust framework Open National Digital Trust Framework
Model authority, delegation, revocation, accountability, appeal, or remedy Governance, Authority and Assurance Metamodel
Analyse the semantics of a trust system Trust Systems Meta Model
Implement portable trust records or evidence contracts Trust Infrastructure Schemas
Deploy or evaluate an agent registry Agent Registry Protocol
Determine whether an actor is permitted to act under mandate, evidence, policy, and time PolicyMesh
Pressure-test a specification for harms, security weaknesses, and governance failure modes RAHP Toolkit
Test or assure a trust-registry deployment TRQP Assurance Hub

Selected work

These repositories are representative entry points into the portfolio rather than a complete catalogue.

Area Project Role in the portfolio
Trust frameworks Open National Digital Trust Framework Reusable framework for national and multi-sector trust infrastructure
Governance Governance, Authority and Assurance Metamodel Machine-oriented model for authority, delegation, revocation, assurance, accountability, appeal, and remedy
Agent infrastructure Agent Registry Protocol Protocol, schemas, APIs, conformance tests, and reference artefacts for deployable agent registries
Policy execution PolicyMesh Bounded evaluation of policy, mandate, evidence, scope, and time
Assurance RAHP Toolkit Portable risk, harms, security, and specification-assurance infrastructure
Interoperability Trust Protocol Interop Lab Composition and seam testing across independently governed protocols
Terminology Trust Infrastructure Glossary Independently governed, plain-language terminology for trust infrastructure

For the complete governed catalogue, maturity and lifecycle state, see Portfolio Status. For adapted, upstream-reference, adjacent, historical, and superseded work, see the Classification Policy and the machine-readable data/repository-status.yaml.

How the portfolio fits together

The portfolio treats trust infrastructure as a set of separable but composable layers. Authority remains bounded: semantic models do not acquire protocol authority, interoperability experiments do not create adoption claims, and assurance findings do not modify normative content automatically.

flowchart LR
    A[Frameworks and adoption] --> B[Governance and semantics]
    B --> C[Protocols and policy]
    C --> D[Implementations]
    D --> E[Conformance and assurance]
    E -. evidence and feedback .-> B

    T[Terminology] -. shared language .-> A
    T -. shared language .-> B
    T -. shared language .-> C
    I[Interop Lab] -. composition testing .-> C
    I -. evidence .-> E
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See Portfolio Architecture for the full system view, authority boundaries, relationship semantics, and cross-repository dependencies.

Portfolio assurance

This repository runs an evidence-producing portfolio assurance monitor over governed repositories. It checks declared project state against observable repository evidence, detects portfolio churn, retains historical observations, and publishes findings without silently changing repository-local declarations or portfolio classifications.

  • Assurance dashboard — current portfolio assurance view
  • Development finding feeds — per-repository downloadable JSON and Markdown findings that can be carried into release work
  • Methodology — what is tested and how findings are derived
  • Operations — monitoring, evidence retention, issue routing, and recovery behaviour

A finding is evidence for review, not an instruction. Disposition, remediation, and closure remain with the repository or authority that owns the affected scope.

Governance and provenance

The profile repository owns portfolio membership, strategic presentation, relationship metadata, and portfolio-level assurance evidence. Individual repositories retain authority over their normative content, releases, maturity declarations, validation commands, and project-local evidence.

Status is represented across distinct dimensions including portfolio disposition, maturity, lifecycle, operational status, specification status, provenance, and authority. The authoritative vocabulary and current classifications live in data/repository-status.yaml; featured original repositories are expected to publish repository-local PROJECT-STATUS.yaml files conforming to schemas/project-status.schema.json.

Forks and adapted upstream work are identified explicitly. Inclusion in this portfolio does not imply upstream authorship, governance authority, release authority, endorsement, or adoption.

Working with this portfolio

Portfolio validation and link checks are automated. Local validation can be run with:

python scripts/validate_portfolio.py
python scripts/check_internal_links.py
python scripts/check_site_navigation.py

The profile README is intentionally a front door, not the portfolio database. Detailed classifications, methodology, evidence, and historical state are maintained in the linked documentation and machine-readable artefacts.

Pinned Loading

  1. governance-authority-assurance-metamodel governance-authority-assurance-metamodel Public

    A vendor-neutral, protocol-independent metamodel for governing authority, delegation, accountability, evidence and trust decisions across distributed digital systems. Defines normative concepts, re…

    Python 1

  2. agent-registry-protocol agent-registry-protocol Public

    A standards-oriented protocol for agent registries as distributed authority-control planes for delegated action. Defines interoperable models for agent identity, accountability, delegation, assuran…

    Python 1

  3. trust-systems-meta-model trust-systems-meta-model Public

    Trust Systems Meta Model (TSMM) is a portable reference model for designing, comparing, and implementing trust systems. It links entities, roles, authority, artifacts, claims, controls, evidence, v…

    Python 1

  4. trust-infrastructure-schemas trust-infrastructure-schemas Public

    Forked from archetech/schemas

    Machine-readable schemas for the core artifacts of digital trust infrastructure: assurance declarations, conformance statements, governance credentials, reputation attestations, and ecosystem metad…

    JavaScript 1

  5. trust-graph-artifacts trust-graph-artifacts Public

    A governed repository that converts high-signal Trust Graph essays into machine-legible, testable artifacts. Each artifact expresses authority, delegation, enforcement, revocation, and redress as e…

    Python 1

  6. trqp-assurance-hub trqp-assurance-hub Public

    Meta-assurance entry point for TRQP. Provides TSAM-aligned onboarding, terminology, compatibility guidance, and workflow orchestration—connecting trqp-conformance-suite (protocol validation) and TR…

    Python 3