Japan will officially launch the Crypto-Asset Reporting Framework (CARF) for international tax information sharing starting January 1, 2026. This framework, developed by the OECD, aims to prevent cross-border crypto asset tax evasion. Japan's major crypto exchange Coincheck has notified all users to declare information such as "tax residence country": users who opened accounts by the end of 2025 need to complete the declaration by December 31, 2026, while new users must submit it when opening an account; failure to declare as required or providing false information may result in legal penalties. (NADA NEWS)