RINA Audit Trail Documentation — Verification Chain of Custody

Purpose

The purpose of this document is to provide a comprehensive and detailed audit trail for the verification process of carbon credits, as facilitated by DaedArch Corporation’s sensor-based Measurement, Reporting, and Verification (MRV) platform. This document outlines the requirements for maintaining a complete chain of custody from the initial sensor measurement through verification to the issuance of carbon credits, ensuring compliance with RINA's standards as an Italian classification society engaged in maritime and shipping decarbonization.

Table of Contents

1. [Chain of Custody](#chain-of-custody)
2. [Data Integrity](#data-integrity)
3. [Timestamp Verification](#timestamp-verification)
4. [Tamper Detection](#tamper-detection)
5. [Audit Log Format](#audit-log-format)
6. [Conformity Assessment Procedures](#conformity-assessment-procedures)

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Chain of Custody

Definition

The chain of custody refers to the chronological documentation that records the handling of carbon data from its origin (sensor measurement) to the final issuance of carbon credits. Each step in the process must be documented to ensure traceability and accountability.

Requirements

1. Data Capture:

• All data captured by IoT sensors must include the following fields:
• sensor_id: Unique identifier for the sensor (e.g., SENSOR-001).
• measurement_value: Numeric value representing the carbon measurement (e.g., 100.5).
• measurement_unit: Unit of measurement (e.g., gCO2).
• location: Geographical coordinates (latitude, longitude) of the sensor (e.g., 45.4642, 9.1900).
• timestamp: ISO 8601 formatted timestamp of the measurement (e.g., 2023-10-01T12:00:00Z).

1. Data Transmission:

• Data shall be transmitted to the MRV platform via secure API endpoints. The endpoint for data submission shall be:
• POST /api/v1/sensors/data
• The payload must include a JSON object structured as follows:

`json { "sensor_id": "SENSOR-001", "measurement_value": 100.5, "measurement_unit": "gCO2", "location": { "latitude": 45.4642, "longitude": 9.1900 }, "timestamp": "2023-10-01T12:00:00Z" } `

1. Data Processing:

• The MRV platform shall process the received data using certified algorithms, which must be documented and validated against industry standards for accuracy and reliability.

1. Verification:

• Verification of the processed data shall be conducted by RINA-certified personnel. The verification process must include:
• Cross-referencing sensor data with historical data sets.
• Validating the algorithms used for processing.
• Documenting any discrepancies and corrective actions taken.

1. Credit Issuance:

• Upon successful verification, carbon credits shall be issued with the following data fields:
• credit_id: Unique identifier for the carbon credit.
• amount: Amount of carbon offset (e.g., 100).
• issue_date: Date of credit issuance (ISO 8601 format).
• validity_period: Duration for which the credit is valid.

Documentation Requirements

• All documentation related to the chain of custody, including sensor data, verification reports, and credit issuance logs, shall be stored in a secure, tamper-evident format.

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Data Integrity

Definition

Data integrity refers to the accuracy and consistency of data throughout its lifecycle, ensuring that data remains unaltered and reliable from the point of capture to credit issuance.

Requirements

1. Data Validation:

• Each data input shall be validated against predefined criteria to ensure accuracy. This includes:
• Range checks for measurement_value (e.g., must be a non-negative number).
• Format checks for timestamp (must conform to ISO 8601).

1. Version Control:

• All versions of processing algorithms shall be documented and versioned. The version number must be included in the API response when data is processed.

1. Secure Storage:

• Data shall be stored in a secure database with access controls to prevent unauthorized access. Encryption shall be applied to sensitive data fields.

1. Backup Procedures:

• Regular backups of all data shall be conducted to prevent loss. Backup logs must include:
• backup_timestamp: Timestamp of the backup.
• backup_size: Size of the backup in bytes.
• backup_location: Location of the backup (e.g., cloud storage identifier).

Documentation Requirements

• A data integrity report shall be generated and maintained, documenting any validation failures, corrections made, and the overall integrity checks performed.

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Timestamp Verification

Definition

Timestamp verification ensures that all recorded timestamps are accurate and provide a reliable timeline of events within the audit trail.

Requirements

1. Timestamp Format:

• All timestamps shall be recorded in ISO 8601 format (e.g., 2023-10-01T12:00:00Z).

1. Time Synchronization:

• All sensors and servers shall synchronize their clocks with a reliable time source (e.g., NTP server) to ensure consistent timestamping.

1. Audit Trail of Timestamps:

• An audit trail of all timestamps shall be maintained, including:
• event_type: Type of event (e.g., data_capture, verification, credit_issuance).
• event_timestamp: Timestamp of the event.
• user_id: Identifier of the user or system that triggered the event.

Documentation Requirements

• A timestamp verification log shall be maintained, documenting any discrepancies in timestamps, synchronization issues, and corrective actions taken.

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Tamper Detection

Definition

Tamper detection refers to the mechanisms employed to identify any unauthorized modifications to data or documentation throughout the audit trail.

Requirements

1. Digital Signatures:

• All critical data entries (e.g., sensor data, verification reports, credit issuance) shall be digitally signed using cryptographic algorithms (e.g., SHA-256).

1. Hashing:

• A hash of each data entry shall be calculated and stored alongside the data. The hash value shall be recalculated and compared during audits to detect any alterations.

1. Tamper Alerts:

• The system shall generate alerts for any unauthorized access attempts or anomalies detected during data processing. Alerts must include:
• alert_type: Type of alert (e.g., unauthorized_access, data_mismatch).
• alert_timestamp: Timestamp of when the alert was triggered.
• user_id: Identifier of the user or system involved in the alert.

Documentation Requirements

• A tamper detection log shall be maintained, including records of all alerts, investigations conducted, and outcomes.

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Audit Log Format

Definition

An audit log is a comprehensive record of all actions taken within the MRV platform, providing transparency and traceability.

Requirements

1. Log Structure:

• Each log entry shall include the following fields:
• log_id: Unique identifier for the log entry.
• event_type: Type of event (e.g., data_capture, verification, credit_issuance).
• event_timestamp: Timestamp of the event (ISO 8601 format).
• user_id: Identifier of the user or system that performed the action.
• details: Additional details about the event (e.g., sensor ID, verification results).

1. Log Storage:

• Audit logs shall be stored in a secure, immutable format to prevent tampering. Access to logs shall be restricted to authorized personnel only.

1. Log Retention:

• Audit logs shall be retained for a minimum of 10 years from the date of the last entry. After this period, logs may be archived or disposed of in a secure manner.

Documentation Requirements

• An audit log report shall be generated periodically, summarizing all activities, discrepancies, and actions taken within the MRV platform.

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Conformity Assessment Procedures

Overview

Conformity assessment procedures shall be established to ensure compliance with RINA's standards and requirements throughout the verification chain of custody.

Assessment Process

1. Initial Assessment:

• A comprehensive assessment of the MRV platform shall be conducted prior to deployment, including:
• Review of data capture mechanisms.
• Validation of processing algorithms.
• Examination of security measures.

1. Ongoing Monitoring:

• Continuous monitoring shall be implemented to ensure ongoing compliance, including:
• Regular audits of data integrity and timestamp verification.
• Periodic reviews of tamper detection mechanisms.

1. Reporting:

• Detailed reports shall be generated following each assessment, documenting findings, corrective actions, and compliance status.

1. Corrective Actions:

• A corrective action plan shall be developed and implemented for any identified non-conformities, including timelines for resolution and responsible parties.

Documentation Requirements

• All assessment reports, corrective action plans, and compliance documentation shall be maintained in a secure repository for future reference and audits.

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Conclusion

This RINA Audit Trail Documentation serves as a foundational framework for ensuring compliance with the standards and requirements set forth by RINA for verification bodies involved in carbon markets. By adhering to these detailed procedures for chain of custody, data integrity, timestamp verification, tamper detection, and audit log management, DaedArch Corporation can provide a robust and reliable MRV platform that meets the expectations of stakeholders and regulatory bodies alike.

All personnel involved in the implementation and maintenance of this documentation shall be adequately trained and informed of their responsibilities to uphold the integrity and reliability of the carbon verification process.