Sustainability Studio (Guardian)

Hedera's open-source Guardian platform for tokenising and tracking environmental assets — carbon credits, RECs, biodiversity credits, plastic credits — under Verra, Gold Standard, ICVCM, and other standard methodologies. Guardian uses policy workflows, schemas, decentralised identity, and HCS-anchored audit trails to make environmental claims verifiable end-to-end. ColdAI deploys and operates Guardian for issuers, registries, and corporate buyers.

What Guardian (Sustainability Studio) is

Guardian is Hedera's open-source policy engine for tokenising and tracking environmental assets — carbon credits, RECs, biodiversity credits, plastic credits, and more. It models real-world methodologies (Verra, Gold Standard, ICVCM, EPA, and others) as policies with schemas, decentralised identities, and HCS-anchored audit trails. The result is environmental claims that are verifiable end-to-end, from project data to issued token.

ColdAI's Guardian service

Methodology implementation

Implement Verra, Gold Standard, ICVCM, and bespoke methodologies as Guardian policies — schemas, workflows, and approval chains.

Audit-grade evidence

HCS-anchored evidence pipelines that meet auditor and registry expectations for traceability and immutability.

Token issuance & retirement

Issue environmental tokens on HTS with proper retirement, double-counting prevention, and registry interoperability.

Buyer & registry integration

Integrate corporate buyers, marketplaces, and traditional registries into a single verifiable system of record.

Programmes we deliver on Guardian

  • Voluntary carbon programmes (VCM)
  • Renewable energy certificate (REC) issuance
  • Biodiversity and nature-based credits
  • Plastic credits and circular-economy tokens
  • Corporate insetting and Scope 3 attestations

Deploy verifiable environmental assets

Engage ColdAI to deliver a methodology-aligned, auditable environmental asset programme on Hedera using Guardian.

Contact our Hedera team