[Implementation of Crypto-Asset Reporting Framework in the UK and Other Countries, Cross-Border Sharing of Transaction Data] Starting January 1, the UK and over 40 other countries have implemented the Crypto-Asset Reporting Framework (CARF) developed by the Organisation for Economic Co-operation and Development (OECD). Major crypto exchanges are required to collect complete transaction records for UK users and report user transaction details and tax residency status to HM Revenue & Customs (HMRC). Beginning in 2027, HMRC will automatically share relevant data with EU member states, as well as countries like Brazil, the Cayman Islands, and South Africa. A total of 75 countries have committed to implementing CARF, with the United States planning to implement it in 2028 and begin information exchange in 2029.