DeepTide TechFlow News, January 6: Japan will officially implement the "Crypto Asset Reporting Framework (CARF)" from January 1, 2026. This international tax framework established by the OECD aims to facilitate information sharing on cryptocurrency transaction details among tax authorities of various countries to prevent opacity in cross-border asset transfers. Domestic major exchange Coincheck issued notifications to all users on January 6, requiring submission of personal information including tax residency country. Users who opened accounts before the end of 2025 must complete registration by December 31, 2026, while new users need to submit relevant information at the time of account opening. Users who fail to submit the required information or provide false information may face legal penalties.