Sadiq
Blockchain-Based Digital Certificate Platform








Public Verify Demo
1 / 9
Overview
Sadiq is a blockchain-based digital certificate platform that enables institutions to issue tamper-proof, verifiable documents — with permanent storage and independent verification.
The platform solves a critical problem: physical and PDF certificates are easily forged, manual verification is slow, and centralized databases are vulnerable.
Problem
- Visual TamperingPhysical and PDF certificates are easily forged with modern design tools — leaving no visual trace for the untrained eye.
- Manual VerificationCompanies must contact the issuing institution via email or phone — one certificate at a time. Slow, costly, and error-prone.
- Centralized RiskInternal databases are vulnerable to cyberattacks, server failures, or institutional closure — putting certificate validity at risk.
- Operational FrictionInstitutions resist digital verification systems because they seem complex, require data migration, and come with rigid monthly fees.
- Slow Certificate IssuanceTraditional printing takes days — design, print, sign, and distribute manually. There is no way to verify a certificate instantly at the moment it is issued.
Solution — Three Layers of Trust
Immutable Storage
Arweave (Permaweb) — certificate data stored permanently
On-Chain Proof
Polygon Blockchain — SHA-256 hash locked as timestamp proof
Public Verification
QR Code + Smart Card — anyone can verify authenticity
My Role
As Technical Project Lead & AI Orchestrator, I led the entire project from ideation to deployment:
- Defined system architecture and technology stack
- Built the two-phase worker pipeline (Arweave → Polygon)
- Designed Smart Card and Visibility features with real-time preview
- Managed the entire development process with AI as a development team
- Documented every phase with blueprint, development logs, and problem-synthesis
Key Features
Two-Phase Worker Pipeline
Arweave upload → Polygon minting with idempotent retry logic and gas price guard.
Smart Card Customization
Real-time preview, logo upload, custom colors and fonts — 3D mockup with staggered hover.
Public Verification
QR Code scan or manual register code entry — with CAPTCHA and rate limiting.
Visibility Settings
Config-driven display control per field — Visible / Blurred / Hidden — real-time preview.
Tech Stack
Outcome
- ✅ Full-featured, end-to-end platform — production-ready
- ✅ Polygon mainnet active, Arweave simulation mode
- ✅ Real-time preview, config-driven, responsive UI
- ✅ 46 development logs + blueprint + problem documentation
- ✅ Built-in fallback: verification stays accessible even if server goes down