## Nuggets Trust Model

This page explains how the Nuggets trust model is implemented. Where [Key Concepts](https://docs.nuggets.life/overview/key-concepts) describes what trust means for autonomous systems - actions, authority, intent, consent, and accountability - this section focuses on the architectural choices and design principles that make that trust model possible in practice. These principles guide how Nuggets is built so that trust can:

- operate across systems, clouds, and organisations
- remain verifiable without centralised control
- preserve privacy while supporting audit and compliance
- integrate with existing infrastructure rather than replace it

This is not a conceptual description of trust, and it is not a product overview. It describes the technical foundations that allow the Nuggets trust layer to be secure, interoperable, and production-ready for autonomous AI.

## Overview

Nuggets addresses the challenge of trust in digital identity and autonomous AI through infrastructure built on decentralised identity, cryptographic verification, and privacy-preserving design. Rather than relying on centralised authorities or opaque control systems, Nuggets uses open standards and cryptographic techniques to enable verifiable trust across humans, organisations, machines, and AI agents - without requiring replacement of existing IAM, cloud, or enterprise platforms.

## Design Principles

Nuggets’ architecture is guided by four foundational design principles.

### Open Standards

Nuggets is built on open, widely adopted standards to ensure interoperability and avoid vendor lock-in.

- Uses W3C standards such as Decentralized Identifiers (DIDs) and Verifiable Credentials (VCs)
- Integrates with existing identity, cloud, and enterprise ecosystems
- Supports cross-vendor, cross-cloud, and cross-organisational deployments

### Cryptographic Trust

Trust in Nuggets is established through cryptographic proof rather than reliance on central authorities.

- Verifiable identities and credentials are cryptographically secured
- Proof replaces assumption and implicit trust
- Architecture supports regulatory and audit requirements without centralised control

### Privacy by Design

Nuggets is designed to minimise data exposure while maximising verifiability.

- Selective disclosure of attributes
- Zero-knowledge techniques where appropriate
- Proof of compliance and consent without disclosure of raw personal data
- Reduced data retention and breach risk by design

### AI-Ready Infrastructure

The architecture is purpose-built for environments where non-human actors take autonomous action.

- Supports humans, organisations, machines, and AI agents as first-class actors
- Designed for non-interactive, continuous operation
- Scales across distributed, agent-driven systems

## Technical Foundations

Nuggets is built on proven cryptographic and distributed systems technologies.

### Identity and Credential Standards

**Decentralized Identifiers (DIDs)**  
W3C standard for verifiable, self-managed digital identity  
**Verifiable Credentials (VCs)**  
Cryptographically secure, portable credentials used to prove attributes, authority, and relationships

### Enterprise Integration Standards

**OpenID Connect (OIDC)**  
Federated authentication using existing enterprise identity providers  
**OAuth 2.0**  
Secure authorisation flows augmented with verifiable credentials and decentralised identity

### Cryptography and Security

**Post-Quantum Encryption**  
Designed to remain secure as cryptographic threats evolve  
**Confidential Computing**  
Encrypted processing environments using Trusted Execution Environments (TEEs) for sensitive operations

### Distributed Verification and Audit

**Blockchain and Distributed Ledger Integration**  
Used for immutable verification, auditability, and integrity guarantees where appropriate (not for centralised data storage)

### AI Protocol Support

- Model Context Protocol (MCP)
- Agent-to-Agent (A2A)
- Compatibility with emerging agent frameworks and protocols

These foundations ensure Nuggets remains secure, interoperable, and adaptable as technology and regulation evolve.

## What This Architecture Enables

The Nuggets trust architecture provides infrastructure that supports the entire lifecycle of autonomous action, without centralising control or data. It enables:

- Verifiable identity without platform lock-in
- Privacy-preserving proof rather than data disclosure
- Cross-system trust without shared identity infrastructure
- Auditability suitable for regulated and high-risk environments

## Relationship to the Trust Model

To be explicit:

- The Trust Model defines what must be true for an autonomous action to be trusted
- The Trust Architecture defines how that truth can be proven

If you are looking to understand:

- why actions - not logins - are the unit of trust
- how authority is evaluated at runtime
- how compliance emerges as an outcome

Start with [Key Concepts](https://docs.nuggets.life/overview/key-concepts). If you want to understand:

- why Nuggets uses decentralised identity
- how cryptographic proof replaces implicit trust
- how privacy and audit coexist

This page describes the architectural foundations that make that possible.