Starting this year, 48 countries and regions worldwide will begin recording cryptocurrency wallet transaction data to align with the Crypto Asset Reporting Framework (CARF), which will officially take effect in 2027. Under the OECD's international tax transparency framework, participating jurisdictions' cryptocurrency service providers, including centralized exchanges, some decentralized exchanges, cryptocurrency ATMs, and brokers, have been required to begin collecting necessary transaction data. Furthermore, a second batch of 27 jurisdictions, including Hong Kong, Australia, Canada, Mexico, and Switzerland, will begin collecting data on January 1, 2027, with information sharing commencing in 2028. This framework aims to combat cross-border tax evasion and money laundering, and improve transparency in cryptocurrency holdings.