Following COP30, Blockchain Carbon Credits Gain Attention for Reforestation and Climate Action Projects
As the 30th UN Climate Change Conference (COP30) was celebrated last November 2025 in Belém, Brazil, the urgency for trustworthy and viable climate solutions will certainly be one of the main topics in the spotlight.
This summit is the world’s primary forum for climate negotiation and accountability, and it reunited several world leaders, civil society representatives and major industry leaders to address a wide range of issues and foster a dialogue among diverse social players.
In this context, blockchain carbon credits have emerged as an initiative with the potential to drive a paradigm shift, although not exempt from criticism.
Blockchain Carbon Credits: An Innovative Yet Contested Tool for Climate Action
Blockchain carbon credits have emerged as an innovative and promising tool in the fight against climate change, one that has revolutionized the carbon market. However, this financing mechanism has not escaped criticism.
On the one hand, these financial mechanisms offer an innovative solution to the many challenges in the fight against the ongoing environmental crisis —more specifically, as an alternative to the lack of confidence in the traditional carbon credits system. Known for being a transparent, secure and immutable technology, blockchain can be a powerful ally in achieving climate goals, offering transformative features within the context of sustainability projects.
By bringing trust and transparency to the carbon market, blockchain-based credits can make it easier for companies to purchase credits —which, in turn, could channel more funding directly to reforestation projects.
On the other hand, in addition to theoretical analysis, practical solutions are urgently needed, and technology—along with key players like sustainability communications agencies that can translate these complex discussions into actionable strategies— becomes a significant ally in this matter, helping to highlight new paths to achieve this shared ambition.
Yet, although these credits are valuable tools for the ecological transition, the current way in which they are implemented and used raises several questions surrounding the genuine impact and results these mechanisms may have.
The debate and critics of blockchain carbon credits highlight an important concern: there is ongoing debate questioning their true impact and arguing that, in practice, it can be used as a disguise tactic in order to evade legal obligations. Instead of encouraging structural changes to actually reduce climate impact, these credits end up functioning as a symbolic currency to delay deeper transformations.
COP30 was the perfect setting for these discussions to bridge the gap between technology and sustainability, while highlighting Brazil’s role as host country and drawing the world’s attention to it.
As in every COP, carbon credits were a key topic at this forum, but the fact that the event was held for the first time in the Amazon rainforest gives it profound significance.
In this scenario, these credits present a unique opportunity to advance reforestation efforts. By adding blockchain carbon credits to the discussion, COP30 can establish a verifiable foundation for these goals, paving the way for greater trust and innovative funding alternatives.
What Are Carbon Credits?
Before further discussing blockchain carbon credits, it is worth exploring what carbon credits are in the first place. They are standardized units that represent the reduction or removal of one ton of carbon dioxide from the atmosphere.
These credits are generated by projects such as reforestation and conservation projects that capture carbon from the atmosphere. Companies can purchase these credits, which fund these kinds of initiatives, thereby mitigating their environmental impacts through a market-based mechanism. They serve as a means to channel investments and develop sustainable programs.
This being said, this system is sometimes subject to intense scrutiny. Its credibility has been hampered at times due to difficulty in verifying the information and ensuring there is no fraud present. In this sense, blockchain-based carbon credits can help restore trust. Critics argue that offsets don’t address the root causes of emissions and can distract from other critical issues like waste management and social equity.
Blockchain Carbon Credits: Technology Applications in Climate Projects
The core characteristic of blockchain that makes it relevant in climate projects is its transparency, a result of its traceability. When a carbon credit is created as a token, it is possible to record its entire life cycle in an immutable public ledger, making the data available for anyone to verify.
All the information hashed on the blockchain cannot be altered or deleted, creating a permanent record of how and by whom it was manipulated. This can solve any key issue in carbon credit markets —namely the fear of fraud, such as double-counting, which could lead to greenwashing, for example.
Another important attribute is the use of smart contracts, a feature that enables automated efficiency by programming the release of payments when a specific goal is reached. This is useful in reforestation projects as it allows for the use of satellite images to determine when a certain area has achieved the expected tree growth. This, in turn, reduces costs and ensures investors and funders are paid when the job is completed.
The decentralized nature of blockchain carbon credits also democratizes access, allowing small businesses, or even individuals, to participate in the carbon market.
Platforms like Orbify, Moss and Toucan Protocol operate in a similar manner, offering credits in the form of tokens. Silvi is another example, utilizing blockchain to record and organize tree planting initiatives and integrate the results into the carbon market.
Several initiatives are already underway using this technology to bring about practical change. The Biocultural Jaguar Credits, created by indigenous local leaders, is a good example, using blockchain to monitor and protect a vast amount of land within the Ecuadorian Amazon.
Some other Latin American enterprises of this nature include Inkaterra, in Peru, which utilizes blockchain technology for orchid conservation. Ekonavi is another, based in Brazil but operating on all continents, it creates a conservation reward program using smart contracts.
Blockchain Carbon Credits and COP30
Brazil hosting the COP30 was deeply symbolic in many aspects —especially considering this event took place in Belém, located in the heart of the Amazon, a vital carbon sink and home to great biodiversity. This highlighted the Global South perspective, often left far from the climate change front line.
Regarding this matter, discussions on carbon credits are essential —serving as a tool for justice, particularly for countries that offer natural solutions and engage with local communities to be part of the response. This brings to the table equitable, decentralized and transparent projects, in which blockchain carbon credits can provide the technological background to refine them.
Brazil’s Approach to Blockchain Applications in Climate Action
The BNDES (Brazilian National Bank for Development), has already drawn up regulations on carbon credits. It actively makes public calls to interested parties to purchase them, provides assistance with asset management, and ensures compliance with parameters to verify the impact is real.
The country’s national bank, Banco do Brasil, is in the carbon market and already supports blockchain technologies within it. This is also the case with several other companies, such as the Brazilian payment card service Elo, which has its own blockchain-based carbon credit platform. In 2023, Brazil also launched the first carbon exchange, B4, which also encompasses blockchain technology.
This supports projects and companies that want to operate in the country, empowering those already established by providing them with additional resources and tools to operate. One example is the Brazilian Biofílica. As part of Ambipar Group, it invests in reforestation and community-based programs in the Amazon Rainforest.
Challenges and Opportunities
As we have discussed, adopting blockchain carbon credits brings about numerous advantages, including transparency, automation, efficiency, democratization of climate finance and empowerment of local communities. But there are some key challenges that must be addressed.
Technological barriers and access are important considerations. Especially in frontline communities in the global south, there is a lack of reliable internet access and also digital literacy problems, which can make it difficult for some people to interact with technology they are not familiar with.
Energy consumption is also a key aspect to be considered. Blockchains can demand massive energy use, which can appear contradictory when you are trying to use them to solve sustainability problems. There are already studies taking place, however, by means of new and more efficient protocols (Proof-of-Stake) that are being developed to make this technology more eco-friendly.
COP30: A Platform for Innovation
COP30 was an opportunity for policymakers and major companies to collaborate with various other social players to design a more equitable system, most notably Global Southern nations and Indigenous communities. In this scenario, blockchain solutions are something to be aware of as they can offer innovative paths for climate crisis mitigation.
International companies following the discussions and actual initiative following COP30 can take great things away from it, especially through early adoption. This can propel companies to a leading position in this area, meanwhile, ensuring businesses’ environmental impact is mitigated once it is well measured, and —in doing so— taking advantage of the transparency and safety that blockchain carbon credits can provide.
Despite featuring crucial dialogues among credible voices, COP30’s main stage belongs to national governments, and it is here that the main debate must take place. This should be an important opportunity to reframe the conversation about carbon credits, not just as a tool for big corporations, but as a means for countries to make more foundational changes to tackle the climate crisis.
Especially for Global South nations, integrating blockchain carbon credits can be a way of attracting climate finance —with the creation of auditable funds, for example— and investing in more robust ecosystem protection programs, as well as in Indigenous autonomy to preserve the forest. This could be a valid legacy of COP30, empowering countries to adopt innovative mechanisms such as these.
