Sustainability assets verification and tokenization on the public ledger. The Hedera Guardian is an open-source platform that leverages the Hedera public distributed ledger network to enable digital-first sustainability policies and enables dMRV (Digital Measurement, Reporting, and Verification) requirements-based tokenization implementation. The Hedera Guardian provides auditable, traceable, and reproducible records that document the emission process and lifecycle of carbon credits, which reduces fraud in the sustainability market.