GreenMark

by IFO4 · Institute for Financial Operations

The on-chain carbon credit registry for enterprise GreenOps - where FinOps governance and carbon accounting converge on a single verified ledger.

The Problem

The voluntary carbon market is fundamentally broken

“A 2023 Guardian investigation found that over 90% of Verra's rainforest offset credits were worthless.”

The Guardian / Die Zeit / SourceMaterial joint investigation

The Connection

Credential the people. Govern the assets.

CFOGP is the credential that certifies practitioners to run GreenOps governance. GreenMark is the registry those practitioners operate.

Carbon Registry

ERC-1155 carbon credits with fraud detection

“Verra and Gold Standard run opaque, centralized carbon registries. IFO4 runs a transparent, on-chain registry.”

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.20;

import "@openzeppelin/contracts/token/ERC1155/ERC1155.sol";
import "@openzeppelin/contracts/access/AccessControl.sol";

contract GreenOpsRegistry is ERC1155, AccessControl {
    bytes32 public constant ISSUER = keccak256("ISSUER");

    struct CreditMeta {
        string  projectId;
        string  vintage;
        string  methodology;
        uint256 issuedAt;
        bool    retired;
    }

    uint256 private _nextId;
    mapping(uint256 => CreditMeta) public credits;
    mapping(uint256 => address)    public retiredBy;

    event CreditIssued(uint256 indexed id, string projectId, uint256 amount);
    event CreditRetired(uint256 indexed id, address indexed holder, uint256 amount);

    constructor() ERC1155("") {
        _grantRole(DEFAULT_ADMIN_ROLE, msg.sender);
        _grantRole(ISSUER, msg.sender);
    }

    function issue(
        address to,
        uint256 amount,
        string calldata projectId,
        string calldata vintage,
        string calldata methodology
    ) external onlyRole(ISSUER) returns (uint256 id) {
        id = _nextId++;
        credits[id] = CreditMeta({
            projectId:   projectId,
            vintage:     vintage,
            methodology: methodology,
            issuedAt:    block.timestamp,
            retired:     false
        });
        _mint(to, id, amount, "");
        emit CreditIssued(id, projectId, amount);
    }

    function retire(uint256 id, uint256 amount) external {
        require(balanceOf(msg.sender, id) >= amount, "Insufficient");
        require(!credits[id].retired, "Already retired");

        _burn(msg.sender, id, amount);
        credits[id].retired = true;
        retiredBy[id] = msg.sender;

        emit CreditRetired(id, msg.sender, amount);
    }

    function supportsInterface(bytes4 interfaceId)
        public view override(ERC1155, AccessControl)
        returns (bool)
    {
        return super.supportsInterface(interfaceId);
    }
}

The future of carbon accountability is on-chain

GreenMark is live on testnet. Built on Google Cloud Blockchain Node Engine. Ready for enterprise pilots.