Mombak and Isometric today announced the issuance of 21,771 reforestation carbon credits from the Reforesting the Brazilian Amazon Project 1. The issuance marks three milestones: Mombak’s first reforestation credits, the first nature-based credits certified by Isometric, and the world’s first native-species reforestation credits certified using dynamic baselines.
Mombak restores degraded pastureland in the Brazilian Amazon, turning it into biodiverse forest through native-species planting and assisted natural regeneration. The Reforesting the Brazilian Amazon Project 1 spans 12 farms to date, where Mombak has planted almost 15 million trees across more than 100 native species, 16 of them endangered, generating close to 600 direct jobs in vulnerable Amazonian regions.
The issuance follows Mombak’s first credits, certified by Isometric in April, for Enhanced Weathering. Mombak has secured offtakes for removals worth more than $170 million in contracted revenue with buyers including Google, McKinsey, and Microsoft, and its Amazon project was the first selected by the Symbiosis Coalition, a group of corporate buyers of nature-based carbon removal.
“Voices all over the carbon removal market have been saying relentlessly that this is the time to move from promises to delivery – and this issuance is just that. Mombak and Isometric are issuing the highest-integrity tonnes available, earlier than expected,” said Gabriel Silva, CEO of Mombak.
The credits were certified under Isometric’s Reforestation Protocol, which ensures every credit represents a tonne of carbon dioxide removed. The protocol requires independently set dynamic baselines, which compare each project against comparable unrestored land so only carbon removal beyond what would have happened anyway is credited. It is the first protocol to account for albedo change, the warming effect that can occur when darker tree cover absorbs more sunlight than the land it replaces. It also requires native-species planting rather than monoculture, supporting biodiversity and resilient forests.
“Forest carbon is the most scrutinized corner of carbon markets, and for good reason. Too many legacy credits were issued on estimates and inaccurate data. This issuance is different. With dynamic baselines, albedo accounting, and native species, these are the most scientifically rigorous reforestation credits ever issued,” said Eamon Jubbawy, CEO of Isometric.
Isometric expanded into nature-based carbon removal in 2024. It now certifies projects across reforestation, improved forest management, mangrove restoration, agroforestry, and soil carbon, working with many of the market’s leading suppliers, a growing number of whom have switched from legacy registries. Its Reforestation Protocol was approved to issue credits with the Core Carbon Principles (CCP) label from the Integrity Council for the Voluntary Carbon Market (ICVCM) in February 2026, the first of Isometric’s nature-based protocols to be approved.
The credits were issued with Certify, Isometric’s agentic certification platform. Verifiers have historically spot-checked a sample of the evidence and inferred the rest. Certify’s AI agents instead cross-check every data point behind a claim, from sensor readings to satellite data, flagging the cases that need an independent verifier’s judgment. The evidence and calculations behind every credit are published on the Isometric Registry.
- Isometric
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