GreenCred

GreenCred Architecture

🧭 Inspiration

At Nexora Hacks 2026, we were inspired to build GreenCred — a platform designed to make sustainability-linked lending trustworthy, efficient, and scalable.

🚨 The Global Problem

Despite the global push toward ESG finance, the lack of standardized, verifiable ESG data is stalling sustainable capital deployment:

🌍 $1.74 trillion in sustainable debt issued in 2024 alone (Environmental Finance).
💸 But over $200B in sustainability-linked loans (SLLs) were delayed or declined in 2023 due to poor ESG data credibility (S&P Global).
🏦 ESG teams spend ~$533k/year per firm managing disclosures manually (PwC), often producing inconsistent reports for every lender, with no audit trail.
🤝 Lenders are pressured by regulators (e.g., EU CSRD, SEC) to validate ESG data — but today’s process involves manual verification, unstandardized KPIs, and spreadsheet chaos.

💡 Our Idea

We imagined a world where:

🌱 Borrowers submit ESG metrics once, using a smart, guided portal
📜 Verifiers review KPIs, sign off digitally, and lock the results on blockchain
📊 Lenders receive one verified ESG Passport they can trust — aligned with LMA’s SLL Principles and ESG IDP

We wanted to go beyond forms and dashboards — and instead deliver:

✅ Machine Learning anomaly detection for bad data
✅ Blockchain-based attestation to ensure auditability
✅ API-ready design to scale with banks and platforms

💥 Why This Matters

GreenCred brings verifiability, comparability, and reusability to ESG data, solving what LMA, the ESG IDP, and regulators have all called a critical bottleneck in sustainable lending.

It's not just a sustainability tool, it’s fintech infrastructure for a decarbonized financial system. Nexora Hacks gave us the challenge and the runway to turn this idea into a product that could scale globally.

We built GreenCred to reflect everything Nexora Hacks 2026 stands for:

🎯 Real-world applicability
🧠 Technical depth (AI + blockchain + finance)
📈 Scalability across borrowers, banks, and regulators
✅ Clarity of UX and strong end-user value

What it does

GreenCred is an end-to-end solution for managing sustainability-linked loan KPIs and ESG performance across all stakeholders:

🧑‍💼 Borrower Dashboard

Submit ESG KPI values (e.g. emissions, energy use, DEI metrics)
Upload supporting documents (e.g. audits, certifications)
Run ML-based validation to flag anomalies or outliers
Generate a reusable, shareable ESG Passport

🧾 Verifier Dashboard

Access submitted KPIs for review
View confidence scores and flagged anomalies
Optionally run OCR checks on uploaded docs
(PDF text extraction by default; full OCR via self-hosted Tesseract pipeline available)
Sign off verified KPIs with timestamp and metadata

🏦 Lender Portal

View each borrower’s ESG Passport
Simulate loan pricing impact based on ESG target performance
Access audit trails via blockchain attestation records

📄 ESG Passport

Shareable ESG disclosure aligned with LMA/IDP-style data model
Includes verified KPI values, targets, confidence scores, and verifier identity
Available as PDF, live dashboard link, or QR export

🔗 Blockchain Audit Trail

Each KPI verification is hashed and recorded as an attestation using Polygon Amoy
Blockchain hash + IPFS CID provide tamper-proof auditability

How we built it

🖥️ Frontend

Vite + React + TypeScript SPA
Fully responsive, role-based dashboards for:
- Borrowers
- Verifiers
- Lenders

🧩 Backend

Supabase stack:
- Auth (user roles and secure access)
- Postgres (structured ESG KPI storage + Row-Level Security)
- Storage (uploads: audit reports, certificates, etc.)
- Edge Functions (business logic and validation workflows)

🧾 OCR Integration

Baseline (free): PDF embedded-text extraction (works on non-scanned PDFs)
Optional: Self-hosted OCR via OCR_SERVICE_URL for scanned documents
- Enables full document parsing and value extraction from uploads

🧠 ML Validation

Edge function scoring pipeline:
- Benchmark analysis
- Anomaly detection
- Confidence scoring
Runs for both KPI previews and submitted values
Designed to mimic AI validation without high compute dependency

🔗 Blockchain Attestation

Pinata for IPFS file pinning
Polygon Amoy testnet for transaction-based data attestation

📄 PDF Export & Sharing

ESG Passport export system includes:
- Standardized PDF layout of verified KPIs
- Shareable public URL
- Downloadable QR code linked to live Passport

Challenges we ran into

Schema standardization based on ESG IDP while supporting custom KPIs.
Designing intuitive blockchain UX with hash explorer integration.
Designing verification UX that is transparent without overwhelming users.
OCR reliability tradeoffs: free PDF text extraction works well for text PDFs, but scanned documents require a self-hosted OCR service.
Role-specific workflows without feature entanglement.

Accomplishments that we're proud of

Fully functional prototype across borrower, verifier, and lender workflows.
Working anomaly/confidence scoring and PDF-first OCR checks to speed up verification.
Blockchain record logging with explorer links
Clean and aligned ESG Passport output with export features.

What we learned

ESG lending credibility issues stem from fragmented, unverifiable reporting.
Role clarity (borrower/verifier/lender) and auditability are crucial for trust.
Automation with ML/OCR/blockchain can meaningfully improve ESG data quality and usability.
Regulatory alignment with LMA, IDP, CSRD, and SFDR is key for adoption.