Develop a Hazardous Waste Tracking Platform with Chain-of-Custody Verification

Posted 2 weeks, Ends in 1 week

^{Flexible budget available.}

$12,000.00 USD

Bids: 2 Interviews: 0

Project Overview

Premium Haztrak is a modern environmental compliance platform designed to help organizations manage hazardous-waste tracking, electronic manifest workflows, and regulatory compliance records in a more secure, transparent, and legally defensible way, specifially designed for Office of Chief Counsel, PA Department of Environmental Protection, USA.

The platform is built around hazardous-waste cradle-to-grave tracking, allowing generators, transporters, facilities, compliance teams, and legal professionals to manage key records, shipment events, supporting documents, signatures, corrections, and audit history in one structured system.

The next phase of the project will introduce blockchain-based verification to strengthen record integrity, chain of custody, and regulatory audit readiness without exposing sensitive compliance data on-chain.

Current Version Status

The current version provides the foundation for electronic hazardous-waste tracking and demonstrates how a digital system can support EPA e-Manifest and RCRAInfo-related workflows.

At this stage, the platform focuses on core hazardous-waste record management, including manifest-related workflows, shipment tracking concepts, compliance documentation, and integration patterns for working with official environmental systems.

The current system should be treated as the base layer for a more advanced compliance product. The goal now is to expand it into a premium version with stronger legal, audit, and verification capabilities.

New Integration Goals

The main enhancement will be a blockchain-powered compliance verification layer.

This blockchain layer will not store private hazardous-waste records directly on-chain. Instead, the system will generate cryptographic proofs for important documents and events, then anchor those proofs to blockchain so records can be independently verified later.

Key integration points include:

Blockchain-based proof of manifest records

Tamper-evident chain-of-custody tracking

Hashing of documents, signatures, corrections, and shipment events

Verifiable audit logs for regulatory and legal review

Evidence packet generation for disputes, audits, or investigations

Secure off-chain storage for sensitive data

On-chain proof references for record integrity verification

Compliance dashboard for high-risk, incomplete, or disputed records

Core Product Features

Premium Haztrak should include:

Manifest and shipment management

Organization and user role management

Document upload and record storage

Signature and approval tracking

Correction and dispute history

Chain-of-custody timeline

Blockchain proof generation

Verification page for documents and records

Audit-ready PDF export

Legal evidence packet generation

Compliance activity dashboard

Blockchain Integration Concept

The blockchain component will work as a proof layer.

When a critical event happens, such as a manifest being created, signed, corrected, received, or finalized, the system will generate a hash of that event or document. These hashes can be grouped and anchored to blockchain through a smart contract or verification registry.

This allows a user, auditor, attorney, or regulator to later confirm whether a record matches the original verified version.

The private data stays protected in the application database or secure storage. The blockchain only stores verification proofs.

About the job

Posted Job

05 Aug, 2026

Deadline

18 Aug, 2026

Experience level

Expert

Project Scope

Medium

Minimum Bid Coins

1 coins

Job Longevity

1 to 3 months

Location

100% Remote job

Skill and expertise

Web
Website Design

Job questions for freelancers

Are you comfortable joining meetings and communicating regularly during the project?
Would you be available to collaborate with other developers on the team?
Can you commit more than 25 hours per week for this project?
Do you have any experience with legal-tech, compliance software, or environmental systems? If yes, please share a few live examples or links to your previous work.

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steven john

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United States

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AI&fullstack developer

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Nice to meet you. I am a Full-Stack Engineer and AI Engineer.With expertise in both web system development and AI development, I can handle everything from planning, designing, and developme...

Pravin Ghuge

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India

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Senior Full Stack & AI Developer | Python, Django, React, Node.js | FastAPI, RAG, LangChain

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Full Stack AI Developer | Python, Django, React, Node.jsI help startups, businesses, and enterprises build scalable web applications, AI-powered solutions, and secure backend systems that so...

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