Cardano Foundation becomes first crypto org to get blockchain-attested audit from Grant Thornton

Blockchain organizations have promised transparency for years. The Cardano Foundation just put an auditor’s signature on-chain to prove it. Grant Thornton Switzerland has attested the Cardano Foundation’s 2025 financial statements directly on the Cardano blockchain, making this the first time an independent auditor has placed a formal attestation on-chain for a major crypto organization. The audit opinion is dated March 25, 2026, and the accompanying Activity and Financial Insights Report was published publicly on April 2, 2026. What actually happened here The mechanism behind this is a platform called Reeve, a financial data integrity system built to bridge conventional accounting workflows with public blockchain infrastructure. Reeve was first used by the Cardano Foundation for its 2024 report, but that version did not include a third-party auditor’s attestation. The 2025 cycle adds that layer: Grant Thornton’s sign-off now lives on Cardano’s ledger, meaning the connection between the audit opinion and the published financial data is verifiable without trusting any single party’s word for it. The Foundation’s CEO, Frederik Gregaard, described the initiative as a demonstration of ...