TUV SUD API Integration Specification — Data Exchange Protocol

Overview

This document outlines the technical specifications for the API-based data exchange between DaedArch Corporation and TUV SUD, a leading European technical inspection and certification body. The purpose of this integration is to facilitate the seamless transfer of environmental data collected by DaedArch’s sensor-based Monitoring, Reporting, and Verification (MRV) platform for carbon markets, specifically for CDM (Clean Development Mechanism) and Gold Standard project validation.

The API shall enable TUV SUD to access, validate, and verify emissions data generated by DaedArch, ensuring compliance with rigorous technical assessment standards. This document provides detailed specifications regarding authentication mechanisms, API endpoints, data models, error handling procedures, and rate limits.

Authentication

1.1 Authentication Mechanism

The API shall utilize OAuth 2.0 for authentication. Both DaedArch and TUV SUD shall implement secure token exchange to authenticate API requests. The following steps outline the authentication process:

1. Client Registration: TUV SUD shall register as a client with DaedArch and obtain a `client_id` and `client_secret`.
2. Token Request: TUV SUD shall request an access token by sending a POST request to the token endpoint.

Endpoint: ` POST https://api.daedarch.com/oauth/token `

Request Body: `json { "grant_type": "client_credentials", "client_id": "{client_id}", "client_secret": "{client_secret}" } `

1. Token Response: DaedArch shall respond with an access token.

Response: `json { "access_token": "{access_token}", "token_type": "Bearer", "expires_in": 3600 } `

1. API Request: TUV SUD shall include the access token in the Authorization header for subsequent API requests.

Request Header: ` Authorization: Bearer {access_token} `

1.2 Token Expiration and Refresh

Access tokens shall expire after 3600 seconds. TUV SUD shall implement a mechanism to refresh tokens using the refresh token flow if required. Tokens should be refreshed before expiration to ensure uninterrupted access.

Endpoints

2.1 Base URL

All API requests shall be made to the following base URL:

` https://api.daedarch.com/v1/ `

2.2 API Endpoints

2.2.1 Data Submission Endpoint

Endpoint: ` POST /data/submit `

Description: This endpoint is used to submit environmental data captured by DaedArch’s IoT sensors.

Request Body: `json { "project_id": "{project_id}", "timestamp": "{timestamp}", "sensor_data": [ { "sensor_id": "{sensor_id}", "value": "{value}", "unit": "{unit}" } ], "metadata": { "location": "{location}", "verification_chain": "{verification_chain}" } } `

Response: `json { "status": "success", "submission_id": "{submission_id}", "message": "Data submitted successfully." } `

2.2.2 Data Retrieval Endpoint

Endpoint: ` GET /data/retrieve/{submission_id} `

Description: This endpoint allows TUV SUD to retrieve previously submitted environmental data.

Request Parameters:

• submission_id: The unique identifier for the submitted data.

Response: `json { "submission_id": "{submission_id}", "project_id": "{project_id}", "timestamp": "{timestamp}", "sensor_data": [ { "sensor_id": "{sensor_id}", "value": "{value}", "unit": "{unit}" } ], "metadata": { "location": "{location}", "verification_chain": "{verification_chain}" } } `

2.2.3 Verification Status Endpoint

Endpoint: ` GET /data/verification/{submission_id} `

Description: This endpoint provides the verification status of submitted data.

Request Parameters:

• submission_id: The unique identifier for the submitted data.

Response: `json { "submission_id": "{submission_id}", "verification_status": "{status}", "comments": "{comments}", "verified_by": "{verifier_id}", "verified_at": "{verification_time}" } `

Data Models

3.1 Data Structure

The following data models shall be adhered to for data submissions:

3.1.1 Sensor Data Model

• sensor_id: Unique identifier for the sensor (String, Required).
• value: Measured value from the sensor (Numeric, Required).
• unit: Unit of measurement (String, Required; e.g., CO2 in ppm, kg, etc.).

3.1.2 Metadata Model

• location: Geographic location of the sensor (String, Required).
• verification_chain: A string representation of the verification chain (String, Required).

3.1.3 Project Data Model

• project_id: Unique identifier for the project (String, Required).
• timestamp: Timestamp of data collection (ISO 8601 format, Required).

3.2 Data Formats

All data shall be transmitted in JSON format. The following conventions shall be used:

• Date/Time: All date and time fields shall be formatted in ISO 8601 (YYYY-MM-DDTHH:mm:ssZ).
• Numeric Values: All numeric values shall be represented in decimal format.

Error Handling

4.1 Error Response Structure

In the event of an error, the API shall return a standardized error response format:

`json { "error": { "code": "{error_code}", "message": "{error_message}", "details": "{additional_details}" } } `

4.2 Common Error Codes

• 400 Bad Request: The request was invalid or cannot be otherwise served.
• 401 Unauthorized: Authentication credentials were missing or incorrect.
• 404 Not Found: The requested resource could not be found.
• 500 Internal Server Error: An unexpected error occurred on the server.

4.3 Client-Side Error Handling

TUV SUD shall implement client-side error handling to gracefully manage API errors. All API responses shall be validated against the expected schema, and appropriate error messages shall be logged for auditing purposes.

Rate Limits

5.1 Rate Limiting Policy

To ensure fair usage and protect against abuse, the following rate limits shall be enforced:

• Requests per Minute: TUV SUD shall be limited to a maximum of 60 requests per minute.
• Requests per Day: TUV SUD shall be limited to a maximum of 1,000 requests per day.

5.2 Rate Limit Response

When the rate limit is exceeded, the API shall return a response with a 429 status code:

`json { "error": { "code": "429", "message": "Rate limit exceeded. Please try again later." } } `

Verification Chains

6.1 Chain of Custody

TUV SUD shall ensure that all data submitted through the API maintains a complete chain of custody. This includes:

• Data Integrity: Data shall be immutable once submitted. Any modifications shall be logged with a timestamp and user ID.
• Audit Trails: All transactions shall be logged with a unique identifier, timestamp, and user information for compliance verification.

6.2 Verification Procedures

TUV SUD shall perform the following verification procedures for submitted data:

1. Data Validation: Ensure that all required fields are present and adhere to the defined data formats.
2. Cross-Reference: Cross-reference submitted data against existing records to identify discrepancies.
3. Reporting: Generate verification reports that summarize the verification status, including any discrepancies or issues identified during the verification process.

Conclusion

This API Integration Specification serves as a comprehensive guide for the data exchange protocol between DaedArch Corporation and TUV SUD. Adherence to the outlined specifications will ensure a robust, secure, and compliant integration that meets the rigorous standards of technical assessment required for carbon market verification.

All parties involved must ensure ongoing compliance with the specified protocols and be prepared for periodic audits to validate adherence to these standards.