The court ruling, issued by a long trial between the crypto-exchange and American tax authorities, forces Coinbase to disclose personal information of its 13,000 customers. Initially, the US tax authorities wanted to get data about half a million cryptocurrency holders.

The largest US-based cryptocurrency holding Coinbase will be forced to transfer personal data of its 13,000 clients to the IRS. The company will endorse to tax authorities individual taxpayer's number, name, date of birth, address and history of trade operations within the period from 2013 to 2015. The requirement applies only to those customers who within the period from 2013 to 2015 received, sold, sent or bought cryptocurrencies worth $20,000 in a single transaction.

Well-known bitcoin guru Andreas Antonopoulos said on Twitter that he is one of 13,000 users who received a message from Coinbase, telling him that the exchange, due to the court ruling, is forced to provide the IRS with his confidential information. Antonopoulos stressed that he had already paid taxes on the trade operations of that period.

In December 2016, the US Internal Revenue Service requested Coinbase to disclose personal information concerning approximately 500,000 users of the platform. The exchange appealed this claim in court, trying to protect its clients and considering the demands of government bodies as unfounded or excessive. The trial ended in November 2017. The court ruled that a limited number of users fall under the disclosure of information.

Coinbase emphasizes that it is not entitled to provide legal or tax advice, so users should contact their lawyers with relevant questions.