RINA API Integration Specification — Data Exchange Protocol

Overview

This document outlines the technical specifications for API-based data exchange between DaedArch Corporation and RINA. The purpose of this integration is to facilitate the seamless transfer of carbon verification data, ensuring compliance with RINA's standards for maritime and shipping decarbonization. This integration will enable RINA to leverage DaedArch's sensor-based Measurement, Reporting, and Verification (MRV) platform, which captures environmental data through IoT sensors, processes it with certified algorithms, and produces verification-ready reports.

Objectives

1. Enable secure and efficient data exchange between DaedArch and RINA.
2. Ensure compliance with RINA's verification standards and EU ETS regulations.
3. Facilitate the integration of energy transition and carbon market services.

Authentication

Authentication Method

RINA shall implement OAuth 2.0 for authentication. This protocol provides a secure method for applications to access resources on behalf of users.

Token Acquisition

1. Client Credentials: DaedArch shall obtain a client ID and client secret from RINA.
2. Token Request: DaedArch shall send a POST request to the following endpoint to acquire an access token:

` POST https://api.rina.org/oauth/token `

#### Request Body

`json { "grant_type": "client_credentials", "client_id": "your_client_id", "client_secret": "your_client_secret" } `

1. Response

On successful authentication, RINA shall return a response containing the access token, which shall be valid for a predefined duration.

#### Sample Response

`json { "access_token": "eyJz93a...k4laUWw", "token_type": "Bearer", "expires_in": 3600 } `

Token Usage

DaedArch shall include the access token in the Authorization header for all subsequent API requests.

Example Header

` Authorization: Bearer eyJz93a...k4laUWw `

Endpoints

This section details the API endpoints available for data exchange between DaedArch and RINA.

1. Data Submission Endpoint

Endpoint:

` POST https://api.rina.org/v1/data/submit `

Description: This endpoint allows DaedArch to submit carbon verification data.

Request Body Format:

`json { "project_id": "string", "timestamp": "ISO8601 timestamp", "sensor_data": [ { "sensor_id": "string", "value": "number", "unit": "string" } ], "verification_report": { "report_id": "string", "generated_at": "ISO8601 timestamp", "audit_trail": [ { "step": "string", "timestamp": "ISO8601 timestamp", "user": "string" } ] } } `

Response Format:

On success, RINA shall return a 201 Created status and a response containing the submission ID.

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

2. Data Retrieval Endpoint

Endpoint:

` GET https://api.rina.org/v1/data/retrieve/{submission_id} `

Description: This endpoint allows RINA to retrieve previously submitted carbon verification data.

Request Parameters:

• submission_id (string): The unique identifier for the submission.

Response Format:

`json { "submission_id": "string", "project_id": "string", "timestamp": "ISO8601 timestamp", "sensor_data": [ { "sensor_id": "string", "value": "number", "unit": "string" } ], "verification_report": { "report_id": "string", "generated_at": "ISO8601 timestamp", "audit_trail": [ { "step": "string", "timestamp": "ISO8601 timestamp", "user": "string" } ] }, "status": "string" } `

3. Status Check Endpoint

Endpoint:

` GET https://api.rina.org/v1/data/status/{submission_id} `

Description: This endpoint allows DaedArch to check the status of a previously submitted data record.

Response Format:

`json { "submission_id": "string", "status": "string", "message": "string" } `

Data Models

The following data models outline the structure of the data exchanged between DaedArch and RINA.

1. Sensor Data Model

• sensor_id: A unique identifier for the sensor (string).
• value: The measurement value recorded by the sensor (number).
• unit: The unit of measurement (string, e.g., "kg CO2", "g/m3").

2. Verification Report Model

• report_id: A unique identifier for the verification report (string).
• generated_at: The timestamp when the report was generated (ISO8601 timestamp).
• audit_trail: An array of objects representing the steps taken in the verification process.

Audit Trail Object Structure

• step: A description of the verification step (string).
• timestamp: The timestamp when the step was performed (ISO8601 timestamp).
• user: The identifier of the user who performed the step (string).

3. Project Data Model

• project_id: A unique identifier for the project (string).

Error Handling

Error Response Format

All error responses from RINA's API shall follow a standardized format:

`json { "error_code": "string", "error_message": "string", "status": "integer" } `

Common Error Codes

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

Error Handling Procedures

1. DaedArch shall implement retry logic for transient errors (e.g., 500 Internal Server Error) with an exponential backoff strategy.
2. For client errors (4xx), DaedArch shall log the error details and notify the user.

Rate Limits

Rate Limiting Policy

RINA shall enforce rate limits on the number of requests that can be made to the API. The default rate limit shall be:

• 100 requests per minute per client.

Rate Limit Response

If DaedArch exceeds the rate limit, RINA shall respond with a 429 Too Many Requests status code.

Sample Rate Limit Response

`json { "error_code": "rate_limit_exceeded", "error_message": "You have exceeded the allowed number of requests.", "retry_after": 60 } `

Rate Limiting Procedures

1. DaedArch shall monitor API usage and implement throttling mechanisms to prevent exceeding rate limits.
2. DaedArch shall handle 429 responses gracefully, informing users of the rate limit and suggesting retries after the specified time.

Conclusion

This API Integration Specification serves as a comprehensive guide for the technical integration between DaedArch Corporation and RINA. Adherence to the outlined protocols, data models, and error handling procedures is essential to maintain compliance with RINA's verification standards and facilitate effective data exchange for carbon market services.

All parties involved shall ensure that they regularly review and update their systems to remain compliant with evolving standards and regulations within the maritime and shipping decarbonization sphere.