ERM CVS API Integration Specification — Data Exchange Protocol

Overview

This document specifies the API integration requirements for data exchange between DaedArch Corporation and ERM CVS. The API is designed to facilitate the seamless transfer of environmental data captured through DaedArch's sensor-based Measurement, Reporting, and Verification (MRV) platform. The primary objective is to ensure compliance with ERM CVS standards for independent assurance of carbon and sustainability claims, particularly in the context of Scope 3 and value chain emissions.

Authentication

1. Authentication Mechanism

The API shall use OAuth 2.0 for authentication. All requests to the ERM CVS API must include a valid access token in the HTTP Authorization header.

Token Request

To obtain an access token, DaedArch shall send a POST request to the following endpoint:

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

Request Body:

`json { "grant_type": "client_credentials", "client_id": "YOUR_CLIENT_ID", "client_secret": "YOUR_CLIENT_SECRET" } `

Response:

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

2. Token Expiration

The access token shall expire after 3600 seconds (1 hour). DaedArch must implement a mechanism to refresh the token before expiration to ensure uninterrupted service.

Endpoints

1. Data Submission Endpoint

URL

` POST https://api.ermcvs.org/data/submit `

Description

This endpoint is used to submit verified environmental data from DaedArch's platform to ERM CVS for certification and verification.

Request Headers

• Authorization: Bearer ACCESS_TOKEN
• Content-Type: application/json

Request Body

`json { "data": [ { "sensor_id": "string", "timestamp": "YYYY-MM-DDTHH:MM:SSZ", "value": "number", "unit": "string", "location": { "latitude": "number", "longitude": "number" }, "metadata": { "project_id": "string", "report_id": "string", "verified": "boolean" } } ] } `

Data Field Mappings

• sensor_id: Unique identifier for the IoT sensor (string).
• timestamp: ISO 8601 formatted timestamp (string).
• value: Measurement value (number).
• unit: Units of measurement (string, e.g., "kg CO2e").
• location: Geographical coordinates of the sensor (object).
• latitude: Latitude (number).
• longitude: Longitude (number).
• metadata: Additional contextual information (object).
• project_id: Identifier for the associated project (string).
• report_id: Identifier for the verification report (string).
• verified: Boolean indicating whether the data has been verified (boolean).

Response

Upon successful submission, the API shall respond with a 201 Created status and a response body as follows:

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

2. Data Retrieval Endpoint

URL

` GET https://api.ermcvs.org/data/retrieve `

Description

This endpoint retrieves previously submitted data for review and auditing purposes.

Request Headers

• Authorization: Bearer ACCESS_TOKEN
• Accept: application/json

Query Parameters

• project_id: (optional) Filter by project identifier (string).
• start_date: (optional) Start date for data retrieval (YYYY-MM-DD).
• end_date: (optional) End date for data retrieval (YYYY-MM-DD).

Response

The API shall return a 200 OK status with the following response body:

`json { "data": [ { "submission_id": "string", "sensor_id": "string", "timestamp": "YYYY-MM-DDTHH:MM:SSZ", "value": "number", "unit": "string", "location": { "latitude": "number", "longitude": "number" }, "metadata": { "project_id": "string", "report_id": "string", "verified": "boolean" } } ] } `

Data Models

1. Data Model Overview

The data model for the API shall be structured to ensure clarity and compliance with ERM CVS standards. Each data submission must adhere to the following schema:

• Sensor Data Model: This model captures the essential attributes of the environmental data collected by the sensors.

Sensor Data Model Schema

`json { "sensor_id": "string", "timestamp": "YYYY-MM-DDTHH:MM:SSZ", "value": "number", "unit": "string", "location": { "latitude": "number", "longitude": "number" }, "metadata": { "project_id": "string", "report_id": "string", "verified": "boolean" } } `

2. Metadata Model

The metadata model provides context for each data submission and includes information on project identifiers and verification status.

Metadata Schema

`json { "project_id": "string", "report_id": "string", "verified": "boolean" } `

Error Handling

1. Error Response Format

All error responses from the API shall follow the structure outlined below:

`json { "status": "error", "code": "ERROR_CODE", "message": "Detailed error message." } `

2. Common Error Codes

• 400 Bad Request: The request is malformed or contains invalid data.
• 401 Unauthorized: The access token is missing or invalid.
• 403 Forbidden: The client does not have permission to access the requested resource.
• 404 Not Found: The requested resource does not exist.
• 500 Internal Server Error: An unexpected error occurred on the server.

Rate Limits

1. Rate Limiting Policy

To ensure fair usage of the API, ERM CVS shall enforce a rate limit of 100 requests per minute per client. Exceeding this limit shall result in a 429 Too Many Requests error.

2. Rate Limit Response

When the rate limit is exceeded, the API shall respond with:

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

Compliance Assessment Procedures

1. Verification Process

ERM CVS shall conduct periodic audits of DaedArch's data submissions to ensure compliance with the established standards for carbon and sustainability claims. The verification process shall include:

• Data Integrity Check: Validate the accuracy and completeness of the submitted data against the original sensor readings.
• Chain-of-Custody Audit: Review the full chain-of-custody for each data point, ensuring that data has not been altered or tampered with during the submission process.
• Documentation Review: Assess the accompanying documentation for each project and report to ensure alignment with ERM CVS requirements.

2. Reporting Findings

Audit findings shall be documented and communicated to DaedArch within 30 days of the audit completion. Any identified non-conformities shall be addressed within a specified timeframe, as agreed upon during the audit debrief.

3. Continuous Improvement

ERM CVS encourages DaedArch to engage in continuous improvement practices, including regular training for personnel involved in data collection and submission, as well as periodic reviews of the API integration processes to enhance efficiency and compliance.

Conclusion

This API Integration Specification outlines the requirements for data exchange between DaedArch Corporation and ERM CVS. By adhering to these specifications, DaedArch will ensure compliance with ERM CVS standards for independent assurance of carbon and sustainability claims. Both parties are committed to fostering a transparent and efficient data exchange process that supports the integrity of carbon markets and sustainability efforts.