--- title: Proba Registry description: Discover Proba Registry, where Inset Units ensure transparency in carbon reduction and support your net-zero goals through verified methodologies and streamlined processes. --- [![probalogo](https://proba.earth/hs-fs/hubfs/probalogo.png?width=850&height=242&name=probalogo.png)](https://proba.earth/?hsLang=en) Menu - Use cases By needs and by business Menu Use Cases Explore Proba use cases by your needs and business. By needs - [Quantify fertilizer emission](https://proba.earth/quantify-fertilizer-emissions-proba?hsLang=en) - [Certify reductions](https://proba.earth/certify-emission-reductions?hsLang=en) - [Design projects](https://proba.earth/design-sustainability-projects?hsLang=en) - [Connect to buyers](https://proba.earth/connect-to-buyers?hsLang=en) - [Report Scope 3 progress](https://proba.earth/report-scope-3-progress?hsLang=en) By business - [Food companies & CPG’s](https://proba.earth/for-food-companies?hsLang=en) - [Commodity traders](https://proba.earth/commodity-trader?hsLang=en) - [Agricultural cooperatives](https://proba.earth/agri-cooperatives?hsLang=en) - [Fertilizer producers](https://proba.earth/for-fertilizer-producers?hsLang=en) ![Blog featured image (33)](https://proba.earth/hs-fs/hubfs/Blog%20featured%20image%20(33).png?width=1920&height=1080&name=Blog%20featured%20image%20(33).png) 28.10.2025 2 min Proba supports ofi with fertilizer pilot in Brazil [Read More](https://proba.earth/probas-blog/proba-ofi-brazilian-coffee?hsLang=en) - Products Tools and services Menu Products Explore all of Proba’s tools and services suited to you.  Products - [GHG Methodologies](https://proba.earth/methodologies?hsLang=en) - [MRV Platform](https://proba.earth/mrv-platform?hsLang=en) - [Inset Units](https://proba.earth/inset-units?hsLang=en) - [Registry](https://proba.earth/registry) - [Ntree AI](https://proba.earth/ntree-ai?hsLang=en) Services - [Implementation](https://proba.earth/implementation-services?hsLang=en) - [Emission quick scan](https://proba.earth/fertilizer-emission-calculator?hsLang=en) - [Proba Projects](https://proba.earth/proba-projects?hsLang=en) ![Blog featured image (30)](https://proba.earth/hs-fs/hubfs/Blog%20featured%20image%20(30).png?width=1920&height=1080&name=Blog%20featured%20image%20(30).png) 13.10.2025 5min Proba launches AI agent: Proba NTree [Read more](https://proba.earth/probas-blog/proba-launches-ai-agent-proba-ntree?hsLang=en) - Company About, resources and support Menu Company Who we are, how our standard works, and how to reach us  About Proba - [Blog](https://proba.earth/probas-blog?hsLang=en) - [About us](https://proba.earth/about-proba?hsLang=en) - [Contact us](https://proba.earth/contact?hsLang=en) Resources - [Proba Standard](https://proba.earth/proba-standard?hsLang=en) - [Public consultation](https://proba.earth/public-consultation?hsLang=en) - [Approved VVB's](https://proba.earth/approved-vvbs?hsLang=en) ![Blush Wave LinkedIn Banner (1)-1](https://proba.earth/hs-fs/hubfs/Blush%20Wave%20LinkedIn%20Banner%20(1)-1.png?width=2000&height=600&name=Blush%20Wave%20LinkedIn%20Banner%20(1)-1.png) Do you have any questions? [Contact us](https://proba.earth/contact?hsLang=en) Trust & compliance - [Privacy policy](https://proba.earth/proba-privacy-policy?hsLang=en) - [Governance](https://proba.earth/proba-governance?hsLang=en) - [Active projects Active Projects](https://proba.earth/active-projects?hsLang=en) - [Follow Proba on LinkedIn](https://www.linkedin.com/company/proba-earth/) # Proba Registry ![proba\_registry\_animation (1)](https://proba.earth/hubfs/proba_registry_animation%20(1).gif "proba_registry_animation (1)") Every Proba Inset Unit begins as a verified fertilizer emission reduction, quantified under our [science-based methodologies](https://proba.earth/methodologies?hsLang=en) and confirmed by independent third-party verification. An Inset Unit isn't a generic offset. It stays inside your supply chain. The registry tracks and traces each unit from issuance to retirement, linking it to the specific growers, products, and organizations it came from, so the reduction can be claimed where it happened: in your own Scope 3 inventory, not someone else's. That's what makes every unit in this registry auditable, traceable, and yours. [Access the Proba Registry here](https://registry.proba.earth/) - ### Understanding GHG Methodologies and Third-Party Verification & Validation Published: 20.08.2025 Reading time: 2 min [Read More: Understanding GHG Methodologies and Third-Party Verification & Validation](https://proba.earth/probas-blog/understanding-ghg-methodologies-and-third-party-verification-validation?hsLang=en) ![Blog featured image (8)](https://proba.earth/hs-fs/hubfs/Blog%20featured%20image%20(8).png?width=800&name=Blog%20featured%20image%20(8).png) - ### How to start a GHG Project: The step-by-step guide for Project Developers and Reporting Companies Published: 23.05.2025 Reading time: 5 min [Read More: How to start a GHG Project: The step-by-step guide for Project Developers and Reporting Companies](https://proba.earth/probas-blog/how-to-start-a-ghg-project-the-step-by-step-guide-for-project-developers-and-reporting-companies?hsLang=en) ![Blog featured image (27)-1](https://proba.earth/hs-fs/hubfs/Blog%20featured%20image%20(27)-1.png?width=800&name=Blog%20featured%20image%20(27)-1.png) - ### Scalable decarbonization: understanding insetting chain-of-custody and market based mechanisms Published: 01.04.2025 Reading time: 5 min [Read More: Scalable decarbonization: understanding insetting chain-of-custody and market based mechanisms](https://proba.earth/probas-blog/scalable-decarbonization-insetting?hsLang=en) ![Blog featured image (29)](https://proba.earth/hs-fs/hubfs/Blog%20featured%20image%20(29).png?width=800&name=Blog%20featured%20image%20(29).png) ![PROBAFOOTERLOGO](https://proba.earth/hs-fs/hubfs/PROBAFOOTERLOGO.webp?width=317&name=PROBAFOOTERLOGO.webp "PROBAFOOTERLOGO") [Laan van Kronenburg 14, 1183 AS Amstelveen](https://maps.app.goo.gl/aKif8v1k5m9h2zA37)   Start with fertilizer. Infrastructure for lower-carbon, more resilient agricultural supply chains. [Contact us through our email adress!](mailto:) [Follow us on LinkedIn](https://www.linkedin.com/company/proba-earth/)