Add EcoTrade (EcoT)

contracts/EcoTradePassport.sol

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+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.0;
+
+// Simplified VIP180 interface
+interface VIP180 {
+    function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
+}
+
+// Minimal VIP181 (NFT) base
+contract VIP181 {
+    mapping(uint256 => string) private _tokenURIs;
+    mapping(uint256 => address) private _owners;
+    uint256 private _totalSupply;
+
+    event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);
+
+    function totalSupply() public view returns (uint256) {
+        return _totalSupply;
+    }
+
+    function ownerOf(uint256 tokenId) public view returns (address) {
+        return _owners[tokenId];
+    }
+
+    function _mint(address to, uint256 tokenId) internal {
+        _owners[tokenId] = to;
+        _totalSupply += 1;
+        emit Transfer(address(0), to, tokenId);
+    }
+
+    function setTokenURI(uint256 tokenId, string memory uri) public {
+        require(_owners[tokenId] != address(0), "Not minted");
+        _tokenURIs[tokenId] = uri;
+    }
+
+    function tokenURI(uint256 tokenId) public view returns (string memory) {
+        return _tokenURIs[tokenId];
+    }
+}
+
+contract EcoTradePassport is VIP181 {
+    VIP180 public ecoT;
+    uint256 public constant MINT_FEE = 100 * 10**18; // 100 EcoT
+
+    event PassportMinted(address indexed owner, uint256 indexed tokenId, string product, string batch);
+
+    constructor(address _ecoTAddress) {
+        ecoT = VIP180(_ecoTAddress);
+    }
+
+    function mintPassport(
+        address to,
+        string memory product,
+        string memory batch,
+        string memory certType
+    ) external {
+        require(ecoT.transferFrom(msg.sender, address(this), MINT_FEE), "Insufficient EcoT");
+        uint256 tokenId = totalSupply() + 1;
+        _mint(to, tokenId);
+        string memory json = string(abi.encodePacked(
+            '{"name":"', product,
+            ' - Green Passport","description":"Batch: ', batch,
+            ' | Certified: ', certType,
+            '","image":"https://raw.githubusercontent.com/Cosmos369-art/EcoTrade/master/logo.png"}'
+        ));
+        setTokenURI(tokenId, json);
+        emit PassportMinted(to, tokenId, product, batch);
+    }
+}

docs/README.md

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+# 🌱 EcoTrade Green Passport – VeChain dApp Specification
+
+> **Official dApp for the EcoT Token (`0x7016...4fb4`) — Building trust in B2B green trade through blockchain verification.**
+
+## 🎯 Purpose
+EcoTrade Green Passport provides **tamper-proof, on-chain sustainability credentials** for certified eco-goods traded between businesses. By anchoring environmental claims to VeChain, we eliminate greenwashing and empower buyers to **verify before they buy**.
+
+## 🔧 Core Features
+- ✅ **Mint Green Passports**: Suppliers create digital certificates for product batches.
+- ✅ **VIP-181 NFTs**: Each passport is an immutable NFT on VeChain (standard: [VIP-181](https://github.com/vechain/VIPs/blob/master/vips/VIP-181.md)).
+- ✅ **EcoT Utility**: Passport creation requires payment in **EcoT** (VIP-180 token).
+- ✅ **QR Code Verification**: Buyers scan to view real-time, on-chain proof of sustainability.
+- ✅ **Public Transparency**: All data viewable on [VeChain Explorer](https://explore.vechain.org).
+
+## ⚙️ Technical Stack
+| Component       | Technology |
+|-----------------|------------|
+| Token Standard  | VIP-180 (EcoT), VIP-181 (Passport NFT) |
+| Blockchain      | VeChainThor Mainnet |
+| Frontend        | HTML/CSS/JS (hosted on GitHub Pages) |
+| Wallet          | VeChain Sync + Connex |
+| Source Code     | [github.com/Cosmos369-art/EcoTrade](https://github.com/Cosmos369-art/EcoTrade) |
+
+## 🌍 Sustainability Impact
+- Supports **UN SDG 12** (Responsible Consumption)  
+- Enables **auditable green supply chains**  
+- Accelerates adoption of **verified circular economy practices**
+
+## 🔗 Live Resources
+- **Website**: [https://ecotrade.life](https://ecotrade.life)  
+- **EcoT Token**: [`0x7016b857e85e831cd0fba1eb8d86d47870b84fb4`](https://explore.vechain.org/accounts/0x7016b857e85e831cd0fba1eb8d86d47870b84fb4)  
+- **GitHub**: [github.com/Cosmos369-art/EcoTrade](https://github.com/Cosmos369-art/EcoTrade)
+
+---
+
+> 💚 *"In the green economy, trust must be verifiable — not just claimed."*  
+> — **EcoTrade on VeChain**

index.html

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+<!DOCTYPE html>
+<html lang="en">
+<head>
+  <meta charset="UTF-8" />
+  <meta name="viewport" content="width=device-width, initial-scale=1.0"/>
+  <title>EcoTrade — Verified Green B2B Marketplace</title>
+  <link rel="icon" href="logo.png" />
+  <style>
+    body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; background: #f9fdf9; color: #1a5c3a; margin: 0; padding: 0; }
+    .container { max-width: 900px; margin: 0 auto; padding: 20px; text-align: center; }
+    header { padding: 60px 20px 40px; }
+    h1 { font-size: 3.2em; margin: 0; color: #0d3b22; }
+    h2 { font-size: 1.6em; font-weight: 400; margin: 16px 0 30px; color: #2e7d55; }
+    p { font-size: 1.1em; line-height: 1.6; max-width: 700px; margin: 0 auto 25px; }
+    .token-box { background: #e8f5ed; border-radius: 12px; padding: 20px; margin: 30px auto; max-width: 600px; border: 1px solid #c0e0d0; }
+    .btn { display: inline-block; background: #0d3b22; color: white; text-decoration: none; padding: 12px 28px; margin: 10px 8px; border-radius: 30px; font-weight: 600; transition: opacity 0.2s; }
+    .btn:hover { opacity: 0.9; }
+    .news-section { background: white; border-radius: 12px; padding: 25px; margin: 40px 0; box-shadow: 0 2px 10px rgba(0,0,0,0.05); text-align: left; }
+    .news-section h3 { color: #0d3b22; margin-top: 0; }
+    .footer { margin-top: 50px; color: #666; font-size: 0.9em; }
+    @media (max-width: 600px) {
+      h1 { font-size: 2.4em; }
+      h2 { font-size: 1.3em; }
+      .btn { display: block; margin: 12px auto; width: 80%; }
+    }
+  </style>
+</head>
+<body>
+  <div class="container">
+    <header>
+      <h1>🌱 EcoTrade</h1>
+      <h2>The Verified Green B2B Marketplace</h2>
+      <p>Buy and sell certified sustainable goods with <strong>on-chain proof</strong> of origin, impact, and authenticity — powered by VeChain.</p>
+
+      <div class="token-box">
+        ✅ <strong>EcoT Token Live on VeChain Mainnet</strong><br>
+        Contract: <code>0x7016b857e85e831cd0fba1eb8d86d47870b84fb4</code><br>
+        <a href="https://explore.vechain.org/accounts/0x7016b857e85e831cd0fba1eb8d86d47870b84fb4" target="_blank" style="color:#0d3b22; text-decoration:underline;">View on VeChain Explorer</a>
+      </div>
+
+      <a href="https://github.com/Cosmos369-art/EcoTrade/blob/master/docs/README.md" class="btn" target="_blank">Read Technical Spec</a>
+      <a href="mailto:hello@ecotrade.life?subject=EcoTrade Inquiry" class="btn">Contact Us</a>
+    </header>
+
+    <div class="news-section">
+      <h3>📰 Green Pulse: Insights for Sustainable Business</h3>
+      <p>Coming soon: Expert analysis on eco-certifications, green tech, circular supply chains, and global sustainability events — all curated for B2B leaders like you.</p>
+      <p><strong>Launching Q1 2026</strong> — Building trust in green trade, one blockchain-verified transaction at a time.</p>
+    </div>
+
+    <div class="footer">
+      <p>© 2026 EcoTrade. All rights reserved.</p>
+      <p>Powered by <a href="https://vechain.org" target="_blank">VeChain</a> | <a href="https://github.com/Cosmos369-art/EcoTrade" target="_blank">GitHub</a></p>
+    </div>
+  </div>
+</body>
+</html>

main/0x7016b857e85e831cd0fba1eb8d86d47870b84fb4/additional.json

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+{
+  "website": "https://ecotrade.life", 
+  "links": {
+    "twitter": "",
+    "telegram": "",
+    "medium": "",
+    "github": "",
+    "facebook": "",
+    "slack": ""
+  },
+  "whitePaper": "https://ecotrade.life/whitepaper.pdf", 
+  "crossChainProvider": {
+    "name": "native",
+    "url": "https://native.org/bridge" 
+  }
+}

main/0x7016b857e85e831cd0fba1eb8d86d47870b84fb4/info.json

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+{
+  "name": "EcoTrade",
+  "symbol": "EcoT",
+  "decimals": 18,
+  "desc": "A sustainable blockchain platform focused on eco-friendly trading solutions."
+}

tokens/0x7016b857e85e831cd0fba1eb8d86d47870b84fb4.json

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+{
+  "name": "EcoTrade Token",
+  "symbol": "EcoT",
+  "decimals": 18,
+  "logo": "https://raw.githubusercontent.com/Cosmos369-art/EcoTrade/master/logo.png",
+  "website": "https://ecotrade.life",
+  "description": "EcoT is the utility token of the EcoTrade B2B platform, enabling verified trading of certified sustainable goods and services on VeChain. It supports green certification, carbon offsetting, and eco-supplier reputation systems.",
+  "github": "https://github.com/Cosmos369-art/EcoTrade"
+}