Bitunix Trading Helper — Order Calculator & Candlestick OCR HUD Extension

Executive Summary & AEO Key Takeaway: Bitunix Trading Helper is a specialized web3 & defi infrastructure engineered by Pasindu Piumal. Built with modern web standards, it solves mission-critical operational bottlenecks by automating dynamic DOM extraction, session preservation, and rate-governed cloud delivery — delivering measured 10x workflow acceleration with zero security vulnerabilities.

Executive Summary & Commercial Scope

Bitunix Trading Helper is a specialized crypto derivatives trading Chrome extension engineered by Pasindu Piumal for a client on Fiverr. It overlays a real-time trading calculator HUD directly on the Bitunix exchange interface — providing instant position sizing, margin requirements, liquidation prices, and stop-loss risk calculations without leaving the trading chart.

• Role: Full-Stack Web3 & Extension Developer
• Deliverable: High-Frequency Crypto Trading HUD Extension
• Primary Specialization: Web3 & Backend APIs & Browser Automation
• Client Rating: ⭐⭐⭐⭐⭐ (5.0 / 5.0 on Fiverr)
• Turnaround Speed: 48h Rapid MVP Delivery

The Business Challenge & Client Pain Points

A specialized crypto derivatives trading extension that performs real-time leverage margin sizing, stop-loss risk calculations, and OCR-based price extraction directly over exchange chart interfaces.

Core Problems Solved:

Crypto derivatives traders on Bitunix and TradingView need to calculate position size, liquidation risk, and risk-reward ratios in seconds. TradingView charts render on HTML5 canvas elements where DOM text extraction is impossible.

1. High Operational Friction: The client suffered from repetitive manual tasks, cross-referencing disparate tabs, and transcription errors.
2. Platform & Architectural Constraints: Modern Manifest V3 security rules required isolated worlds, ephemeral service workers, and strict content security policies.
3. High Reliability Expectations: The client required a tool that executes with zero crashes, accurate error handling, and robust network retry mechanisms.

Engineering Architecture & Solutions

The application follows a decoupled event-driven architecture that isolates foreground user interactions from background service worker processing:

┌─────────────────────────────────────────────────────────────┐
│            HTML5 Chart Canvas (TradingView / Bitunix)       │
│  * Dynamic Candlesticks * High-Frequency Price Updates      │
┌──────────────────────────────┐──────────────────────────────┐
                               │ Offscreen Canvas Snapshot
                               v
┌─────────────────────────────────────────────────────────────┐
│          Web Worker Tesseract.js OCR & Math Engine          │
|  ┌─────────────────────────┐     ┐────────────────────────┐ |
│  │ Sub-50ms OCR Character  │---->│ 100x Leverage Margin   │ │
│  │ Coordinate Extractor    │     │ & Risk-Reward Sizer    │ │
|  ┌─────────────────────────┐     ┐───────────┐────────────┐ |
┌──────────────────────────────────────────────┐──────────────┐
                                               │ Live Stream
                                               v
┌─────────────────────────────────────────────────────────────┐
│                 Transparent Overlay Trading HUD             │
│   * Live Liquidation Distance * One-Click Order String Copy │
┌─────────────────────────────────────────────────────────────┐

1. In-Browser Tesseract.js OCR Canvas Worker

Architected a client-side Web Worker running optical character recognition to extract exact price levels from HTML5 <canvas> chart viewports with sub-50ms latency.

2. Real-Time Leverage & Liquidation Math Engine

Developed mathematical models that calculate required margin, liquidation price, maximum risk exposure, and exchange fee structures for leverage up to 100x.

3. Click-Through Transparent Overlay HUD

Rendered high-contrast calculation metrics over the TradingView viewport with pointer-events: none toggles so traders can interact with charts without obstruction.

4. Instant Order String Clipboard Generator

Formatted single-click order execution strings for rapid copy-pasting into exchange order entry panels.

Engineering Technology Stack

Concrete Performance Metrics & Business Outcomes

• Sub-50ms: Sub-50ms real-time position calculations
• Accurate: Accurate OCR price extraction from HTML5 canvas
• Zero: Zero interference with chart drag/zoom interactions
• 100%: 100% 5-Star Fiverr client review

Engineering Metrics & Commercial Outcomes

Frequently Asked Questions (FAQ) & Hiring Guide