Raising ambition inside the Paris Agreement calls for collaboration on climate action. Efficient a nd trustworthy monitoring, reporting and verification (MRV) of greenhouse gas (GHG) emissions is important in decarbonization efforts. This article proposes a collaborative approach, and exemplifies two scenarios in MRV. Therefore, we propose a consortium blockchain as platform, and aim on the reduction of costs and efforts by collaboration and automation of different aspects in GHG management. We present a demonstrator with Hyperledger Fabric, which employs a industry grade RFID security approach to distribute and manage certificate material, a low-code interface to interact with the network, and the operation of Fabric nodes on industrial edge devices. We argue that a toolkit approach like CarbonEdge may be a step towards ease of use for blockchain based GHG emissions management.