Coinbase says the addresses are related to Russian individuals or entities it believes may be engaged in illicit activity.
The addresses were blocked over fears crypto-currency could be used to evade sanctions.
Many experts have warned that Russians are turning to cryptocurrencies as a way to get through financial sanctions placed by foreign governments.
Coinbase’s chief legal officer, Paul Grewal, made the announcement on a company blog.
He outlined how the crypto exchange was complying with new rules imposed because of the Russia’s invasion of Ukraine.
No access for sanctioned individuals
It means no access for sanctioned individuals and includes “sophisticated blockchain analytics” to identify accounts indirectly linked to banned users.
“Coinbase blocks over 25,000 addresses related to Russian individuals or entities we believe to be engaging in illicit activity, many of which we have identified through our own proactive investigations,” Mr Grewal wrote.
“We shared them with the government to further support sanctions enforcement.
“Sanctions play a vital role in promoting national security and deterring unlawful aggression and Coinbase fully supports these efforts by government authorities.”
