Carbon removal companies Mombak and Isometric have announced the issuance of 21,771 reforestation carbon credits from the Reforesting the Brazilian Amazon Project 1. The transaction represents Mombak’s first reforestation credits, the first nature-based credits certified by Isometric, and the world’s first native-species reforestation credits verified using dynamic baselines.
Mombak’s operations focus on converting degraded pastureland in the Brazilian Amazon into biodiverse forest ecosystems through native-species planting and assisted natural regeneration. To date, the project spans 12 farms where the company has planted nearly 15 million trees across more than 100 native species, including 16 endangered species. The initiative has also generated close to 600 direct jobs in vulnerable regional communities.
The issuance follows Mombak’s initial carbon credits for Enhanced Weathering, which were certified by Isometric earlier this year. Mombak has secured offtake agreements for carbon removals worth over $170 million in contracted revenue with corporate buyers including Google, McKinsey, and Microsoft. Its Amazon operation was also the first project selected by the Symbiosis Coalition, an alliance of corporate buyers focused on nature-based carbon removal.
Gabriel Silva, Chief Executive Officer of Mombak, stated that the issuance represents a shift from market promises to tangible delivery, providing high-integrity carbon removal tonnes ahead of schedule.
The credits were validated under Isometric’s Reforestation Protocol, which requires independently set dynamic baselines. This methodology compares project areas against comparable, unrestored land to ensure credits are only issued for carbon removal that would not have occurred naturally. The protocol is also the first to account for albedo change—the potential warming effect caused when darker tree canopies absorb more sunlight than the cleared land they replace. Additionally, the framework mandates native-species planting over monoculture to support ecological biodiversity.
Eamon Jubbawy, Chief Executive Officer of Isometric, noted that forest carbon has historically faced intense scrutiny due to legacy credits being issued on estimates and inaccurate data. He emphasized that the introduction of dynamic baselines, albedo accounting, and native species makes this the most scientifically rigorous reforestation issuance to date.
Isometric expanded its operations into nature-based carbon removal in 2024, certifying projects across reforestation, forest management, mangrove restoration, agroforestry, and soil carbon. In February 2026, its Reforestation Protocol became the first of its nature-based frameworks to receive approval to issue credits with the Core Carbon Principles (CCP) label from the Integrity Council for the Voluntary Carbon Market (ICVCM).
The validation process utilized Certify, Isometric’s automated certification platform. Rather than relying on traditional methods where verifiers spot-check sample data, the platform uses artificial intelligence agents to cross-check every data point behind a carbon claim, including sensor readings and satellite imagery, before publishing the verification calculations on the Isometric Registry.
