Building an open, scalable, and impactful carbon market
Our carbon credit marketplace connects high-impact environmental projects with critical financing.
Carbonmark is the climate infrastructure layer for the 21st century—delivering connection, transparency, speed, and accessibility to carbon markets.
With real-time pricing, traceability of each tonne of CO₂, and scalable APIs, Carbonmark provides end-to-end visibility and control—from credit issuance to retirement.
1,000,000+ tCO2
retired on behalf of our clients
150+
carbon projects we support
500+
orders for the last 24 hours
Scale Up Your Positive Impact
Powering Carbon Markets That Work
Carbonmark connects all participants—from pioneering project developers to climate-conscious businesses and individuals—with a frictionless, user-first carbon credits marketplace to sell, retire carbon credits, and integrate offsetting across digital products via our API.
We expand supply, increase liquidity, and bring greater diversity to the market, allowing every buyer to find high-integrity projects to support and credits that align with their sustainability goals and brand identity.
Our open infrastructure accelerates the flow of climate finance to where it’s needed most, and ensures every transaction is verifiable and secure.
The result: more capital is directed to climate projects, while buyers gain unmatched control over their positive climate impact.
Leveraging Blockchain for Scalable Climate Impact
A new wave of innovation is reshaping how the voluntary carbon market operates. Alongside emerging frameworks and regulations, blockchain technology is driving greater transparency, efficiency, and trust.
This transformation is essential — the VCM must scale tenfold in the coming years if humanity is to meet its climate goals. Modernizing the entire carbon market infrastructure is key to making it both high-integrity and future-ready.
In our latest report, we explore the pivotal role of blockchain in this process and highlight some of the pioneers leading the way.
Learn more in the latest 2025 Carbonmark's Report.
Trust Your Impact
From sub-tonne retirements to large-scale offsets, every credit is traceable and verifiable on the blockchain—instantly and transparently.
Support Real Climate Solutions
Your purchase provides direct funding to verified, high-integrity environmental projects on the ground, working to combat climate change.
Champion Open Climate Finance
Carbonmark is part of a growing shift toward transparent, interoperable, and efficient carbon markets that serve people and the planet.
Take Climate Action in Seconds
From individuals to corporations and governments, Carbonmark empowers everyone to be part of the solution within a few clicks and with full transparency.
Choose From Diverse Carbon Projects
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Fund Ocean Alkalinity Enhancement in Italy
Limenet is an Italian climate tech startup pioneering carbon removal through its patented pH-equilibrated Ocean Alkalinization technology. By mimicking natural processes, Limenet permanently stores CO₂ in seawater as calcium bicarbonates.
Price per tonne:
$680.00
Tonnes available:
15
Support Organic Waste Composting in the USA
The Black Earth Organic Waste Compost project in Massachusetts, USA, is an organic waste composting initiative operational since December 1, 2021, diverting food waste from landfills to reduce 7,000 tCO2e annually.
Price per tonne:
$19.50
Tonnes available:
5,800
Drive Paraguay’s Reforestation
The Forestal Río Aquidabán project is restoring 301 hectares of degraded grasslands in Concepción, northeastern Paraguay, through a silvopastoral agroforestry system that integrates reforestation with sustainable cattle ranching.
Price per tonne:
$20.23
Tonnes available:
1,500
Our Partners
What Our Clients and Partners Say
With Carbonmark’s advanced platform, we can accelerate the trade of carbon credits while ensuring the communities we work with benefit directly from these projects. Together, we’re creating a model for how nature-based solutions and innovative finance can drive environmental and social impact.
Founder and Trustee,
Together with Carbonmark, we aim to create a more inclusive and transparent marketplace that empowers organisations and individuals to contribute more effectively to the fight against climate change.
CEO, XTCC
Through collaboration with Carbonmark, we’re providing more than 27 million users with a straightforward and accessible pathway to engage in carbon offsetting. This initiative empowers individuals to actively contribute to climate change mitigation, making sustainability a practical, everyday choice.
Head of Business,
