Google's Play Store policy update includes a lot changes and new policies for the cryptocurrency ecosystem.

"For the purposes of this policy, we consider blockchain-based content to be tokenized digital assets secured on a blockchain. If your app contains blockchain-based content, you must comply with these requirements."

"The purchase, holding, or exchange of cryptocurrencies should be conducted through certified services in regulated jurisdictions."

"You must also comply with applicable regulations for any region or country that your app targets and avoid publishing your app where your products and services are prohibited. Google Play may request you to provide additional information or documents regarding your compliance with any applicable regulatory or licensing requirements."