The Macao International Carbon Emission Exchange (MEX) and oneshot.earth have signed a Memorandum of Understanding to scale access to high-quality carbon credits across Asia’s voluntary carbon market.
The deal combines MEX’s regional trading expertise with oneshot.earth’s next-generation registry platform, designed around scientific rigor and digital traceability. The goal is to streamline the way carbon credits are issued, traded, and retired—key functions for ensuring market credibility.
A core feature of the agreement is the technical integration of their systems. By linking platforms through APIs, the partners aim to enable real-time updates on credit issuance and transactions, reducing friction and enhancing transparency across the carbon value chain.
“Partnering with oneshot.earth represents a strategic step forward for the Asian voluntary carbon market. We are seeing rising demand for carbon credits that meet the highest standards of environmental integrity and transparency. By integrating oneshot.earth’s registry and methodological infrastructure into our platform, we are helping build the market infrastructure needed to support long-term decarbonization goals,” said an MEX representative.
Beyond technology, the collaboration will also focus on promoting shared methodologies and frameworks that align with global standards and regional policy initiatives. The effort is aimed at building market trust and accelerating the uptake of credible climate mitigation tools.
Oneshot.earth also shared their enthusiasm about the partnership: “We are thrilled to partner with MEX to scale the impact of our registry across Asia. As market demand shifts toward credibility and auditability, this collaboration will help ensure that buyers and project developers alike can rely on trusted, interoperable infrastructure. Our shared mission is to strengthen confidence in the voluntary carbon market and accelerate the deployment of capital toward verified climate solutions.”
MEX Targeting Growth Across Four Continents


The MEX was officially launched on October 30, 2024, backed by Yunfeng Capital and the Macao Carbon Neutral Research Institute.
Positioned as a standardized, transparent, and efficient platform, MEX focuses on spot and derivatives trading of high‑quality carbon credits and green energy certificates, leveraging blockchain, IoT, and AI for secure, traceable asset management.
It also hosts auctions, clearing, data analytics services, and an incubator fund to support climate‑tech start‑ups. In early 2025, MEX facilitated the first household solar I‑REC transaction in Portuguese‑speaking countries in collaboration with AntChain and Brazil’s Solarman.