The call for more transparency of sovereign debt statistics has become widespread and increasingly urgent. Debt transparency is a prerequisite for monitoring debt sustainability and for engineering orderly restructurings when needed. Debt reporting by debtor states is frequently incomplete, and debt is often hidden from observers. Regulatory provisions that require reporting and oversight are often absent. The full and timely disclosure of debt by borrowers, creditors, and international financial institutions is now an essential element of multilateral attempts to reform the international architecture for resolving debt crises, ensure responsible debt management, and safeguard debt sustainability. […]