# BengalBytes Ad Manager (ads.bengalbytes.com)
> Direct In-App Advertising & In-House Promotion Network for the NexBiz Android Retail Ecosystem.

## Overview
BengalBytes Ad Manager is a specialized, zero-bloat, self-serve advertising platform operating exclusively inside NexBiz — an offline-first retail POS, digital ledger (Khatian), and inventory management Android app serving over 50,000+ brick-and-mortar SME merchants, grocery shopkeepers, and retail businesses across Bangladesh and India.

## Key Value Propositions
- **Guaranteed Daily Attention:** Ads are rendered as a focused, high-contrast modal upon the merchant's first daily cold launch of NexBiz.
- **Strict 1-Modal-Per-Day Frequency Cap:** Each physical hardware device is exposed to exactly one modal ad per calendar day (UTC+6). Subsequent app launches throughout the day are 100% ad-free to maintain merchant focus and avoid banner fatigue.
- **Category Exclusivity:** Only 1 primary sponsor is active per country division per calendar day. No programmatic auction bidding or competing banners.
- **Direct Merchant Action:** Call-to-action buttons link directly to advertiser WhatsApp channels, phone dialers, or wholesale product catalogs.

## Placement Specifications
1. **Primary First-Open Modal (Portrait 4:5)**
   - Dimensions: 1080 × 1350 px (Aspect Ratio 4:5)
   - Formats: WEBP, JPG, PNG
   - Max File Size: 250 KB
   - Safe Margin: 64 px padding; reserve bottom 180 px for CTA button
   - Trigger: First daily cold launch of NexBiz POS

2. **Compact Square Modal (1:1)**
   - Dimensions: 1080 × 1080 px (Aspect Ratio 1:1)
   - Formats: WEBP, JPG, PNG
   - Max File Size: 200 KB
   - Trigger: Secondary promotional announcements and supplier updates

## Target Demographics & Reach
- **Total Network Footprint:** 50,000+ active retail devices
- **Target Profiles:** Small-and-medium enterprise (SME) owners, grocery store (mudir dokan) keepers, pharmacy managers, electronics retailers, and wholesale distributors.
- **Primary Geographies:**
  - Bangladesh: Dhaka, Chittagong, Sylhet, Rajshahi, Khulna, Barisal, Rangpur, Mymensingh divisions.
  - India: West Bengal, Assam, Tripura, and Hindi-speaking commercial hubs.

## Transparent Flat Pricing Matrix (Per Calendar Day)
| Region | Daily Rate (BDT) | Approx USD | Daily Unique Reach | Max Sponsors |
| :--- | :--- | :--- | :--- | :--- |
| Bangladesh National | ৳1,500 / day | ~$13 USD | 35,000 - 45,000 merchants | 1 Sponsor / Day |
| India Regional | ৳2,200 / day | ~$19 USD | 15,000 - 22,000 stores | 2 Sponsors / Day |
| Global Network | ৳3,500 / day | ~$30 USD | 55,000+ total devices | 1 Sponsor / Day |

## Payment & Verification Protocol
- Advertisers pay zero intermediary gateway surcharges by transferring funds directly to corporate verification rails:
  - bKash Merchant Wallet: 01844-000000
  - Nagad Merchant Wallet: 01711-000000
  - Bank Wire / SWIFT for corporate invoices
- **SLA:** Editorial team audits submitted Transaction IDs (TXID) against telco ledgers and reviews creative banners within 120 minutes.

## Technical Integration & Edge Sync API
NexBiz Android client apps poll the ultra-low-latency edge endpoint:
- **Endpoint:** `GET https://ads.bengalbytes.com/api/v1/sync`
- **Query Parameters:**
  - `country`: Two-letter ISO country code (`BD`, `IN`, `GLOBAL`)
  - `lang`: Preferred UI language (`bn`, `en`, `hi`)
  - `app_version`: NexBiz client build number
  - `device_id`: Anonymized hardware hash for frequency capping verification
- **Latency:** Sub-100ms TTFB globally via Vercel Edge Network.
- **Cache Strategy:** `Cache-Control: public, s-maxage=300, stale-while-revalidate=60`

## Corporate Contact
- Company: BengalBytes Technologies Ltd.
- Production Portal: https://ads.bengalbytes.com
- Technical Support: ads@bengalbytes.com