API Gateways and Resolver Interfaces

Standardized Interfaces for External Access, Clause Resolution, and Credential Verification in NSF

8.2.1 The Role of APIs and Resolvers in NSF

To operate within a federated, sovereign, and machine-verifiable governance architecture, NSF must expose:

• Secure access points for simulation input and clause triggering

• Resolvers for credential, clause, and simulation object verification

• Standard APIs for external systems (e.g., DAOs, cities, UN agencies) to interoperate with the protocol’s core logic

This layer ensures interoperability at the data and interaction level, enabling:

• Clause and credential verification by institutions

• Real-time access to simulation results

• Rule-bound triggering from digital twins, oracles, and treaty systems

• Policy execution across hybrid infrastructures

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8.2.2 API Gateway Design Objectives

All NSF APIs follow the following design principles:

Principle	Description
Verifiability	Every request is auditable, signed, and can be traced through CAC and DAO states
Minimal Trust	Gateways operate under zero-trust assumptions, with verification on the client side
Modular	Interfaces are modular for domain-specific integrations (climate, finance, health)
Encrypted	Transport and payload security via TLS 1.3, DIDComm where applicable
Standards-Aligned	REST/GraphQL + support for OpenAPI, JSON-LD, and ISO geospatial schema

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8.2.3 Gateway Categories

API Gateway Type	Core Use
Clause Execution Gateway	Trigger, monitor, or verify clause lifecycle events
Credential Resolver Gateway	Verify VC status, revocation, issuer, and chain-of-trust
Simulation Input Gateway	Inject real-time or historical risk data for forecast execution
Audit Log Gateway	Query zero-knowledge or signed event logs for any system object
DAO Proposal Gateway	Submit or review governance proposals or dispute resolutions
Twin Interface Gateway	Interact with external digital twins or system APIs (e.g., WMO, WHO)

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8.2.4 Clause Resolution Interface

Each clause has a resolvable URI under:

https://nsf.global/resolve/clause/{clause_id}

This interface provides:

• Clause metadata and DSL

• Governance status (draft, active, deprecated)

• Trigger history and CAC execution proofs

• Linked simulation runs and SimulationRunVCs

• Credential dependencies and jurisdictional constraints

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8.2.5 Credential Resolver Interface

Verifies any NSF-issued credential via:

https://nsf.global/resolve/credential/{vc_hash}

Returns:

• VC subject, issuer, scope, domain

• Revocation status (via Merkle Tree or CRL endpoint)

• Binding to clause, DAO, or simulation context

• DID anchor and issuer registry

• Audit proof of issuance and current validity

Also supports VC bundling and dependency tree parsing.

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8.2.6 Simulation API Endpoint

Provides public access to simulation status:

• Template availability and version lineage

• Input schema and ingestion methods

• Current execution queue and forecast latency

• Results from specific simulations

• Verifiable output hashes

REST and GraphQL query formats are available, with optional CAC proof bundles.

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8.2.7 Trigger API Interface

Used by external systems (digital twins, satellites, treaty monitors) to securely signal clause conditions:

POST /trigger/clause-event
{
  "clause_id": "[email protected]",
  "signal_type": "external_sim_trigger",
  "data_reference": "WMO-Twin#0xabc...",
  "signatures": ["0xDAO-approved-sig", "..."]
}

These triggers are processed through:

• Simulation replay (optional)

• DAO-based conditional review

• CAC queue validation

• Clause execution queue

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8.2.8 Audit and Forensics API

Every interaction with a clause, credential, simulation, or DAO can be queried through:

/audit/{object_type}/{object_id}

Returns ZK-bound or signed forensic bundles including:

• Execution trace

• Simulation forecast state

• DAO votes

• Credential dependencies

• Systemic effect logs (e.g., cascade graphs)

This creates an on-chain/off-chain audit bridge, ensuring total accountability.

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8.2.9 External Integration Standards

All NSF APIs conform to:

• OpenAPI v3 for interface specification

• JSON-LD and VC-Data-Model for semantic interoperability

• ISO/IEC 19944 for data usage control

• OGC standards for geospatial data interchange

• W3C DID Resolution for identity lookup and trust anchor federation

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8.2.10 Resolver Interface Security and Governance

• All gateways are mirrored globally for failover and redundancy

• DID-based access control lists (ACLs) manage permissioned use

• Quorum-signed resolvers exist for critical clause and credential lookups

• Abuse protection includes rate limiting, credential-bound API keys, and forensic alerting

• Gateways are deployed at both national and transnational levels to support multilateral integration

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These API and resolver systems form the connective tissue between NSF's internal logic and the broader world of institutional foresight, treaty operations, city-scale twins, and risk observatories.