Design Patterns MCP Server

{ "id": "carbon-credit-tokenization", "name": "Carbon Credit Tokenization", "category": "Sustainable Blockchain", "description": "Transparent carbon offset trading via tokenized credits. Blockchain-verified carbon retirement.", "when_to_use": "Corporate sustainability, carbon markets, offset verification", "benefits": "Transparent tracking, global access, automated retirement, fraud prevention", "drawbacks": "Carbon credit quality verification challenges, additionality concerns", "use_cases": "KlimaDAO, Toucan Protocol, Moss.Earth, carbon markets", "complexity": "High", "tags": [ "sustainable", "carbon", "tokenization", "climate", "offsets" ], "examples": { "solidity": { "language": "solidity", "code": "// Carbon credit tokenization (Toucan Protocol model)\ncontract CarbonToken is ERC20 {\n struct CarbonCredit {\n string projectId; // Verra/Gold Standard ID\n uint256 vintage; // Year generated\n string methodology; // e.g., \"VM0042\"\n bytes32 serialNumber;\n bool retired;\n }\n \n mapping(uint256 => CarbonCredit) public credits;\n \n function bridgeCredit(CarbonCredit memory credit) external onlyVerifier {\n // Bridge off-chain carbon credit on-chain\n _mint(msg.sender, 1 ether); // 1 token = 1 tCO2e\n credits[nextTokenId] = credit;\n }\n \n function retire(uint256 amount, address beneficiary) external {\n _burn(msg.sender, amount);\n emit CarbonRetired(msg.sender, beneficiary, amount);\n // Permanently removed from circulation = carbon offset\n }\n}" } } }