American Carbon Registry (ACR)
ACR, operated by Winrock, was the first registry to receive ICVCM Core Carbon Principles program-level approval, and it has migrated 25-plus years of issuance data onto ICE GreenTrace, which exposes developer APIs that make issuance state addressable to dMRV providers.
American Carbon Registry (ACR)Inside American Carbon Registry (ACR)
ACR was the first registry to receive ICVCM CCP program-level approval and the first with a Paris-aligned methodology designated, anchoring its integrity-incumbent positioning.
In June 2026 ICE launched GreenTrace and ACR migrated 437 million serialized credits and over 40,000 files from more than a thousand projects, preserving 25-plus years of data through the transition.
GreenTrace brings real-time issuance and retirement updates, developer APIs exposing issuance data to marketplaces and ratings providers, an enterprise audit trail, and an atomic settlement layer.
Recent developments
- 2026ACR migrated to ICE GreenTrace, launched 22 June 2026, transferring 437 million serialized credits with real-time updates and developer APIs.
- 2025Confirmed as the first ICVCM CCP-approved registry, with four ACR methodologies carrying the CCP label.
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