Lael Brainard, a governor at the U.S. Federal Reserve, has said bitcoin and its peers raise investor protection and money laundering concerns.
The Central Bank of Russia may use its ethereum-based Masterchain software to communicate financial messaging across the Eurasian Economic Union.
The chairman of the National Bank of Kazakhstan told Sputnik News it is seeking an all-encompassing ban on cryptocurrency exchanges and mining.
The People's Bank of China says cryptocurrencies will be a top priority for the agency this year, in an effort to protect the national currency.
China is still in the process of developing a state digital currency, the chief of a government-funded blockchain research center has said.
A trialed blockchain system for interbank clearance was not as efficient as the current centralized system, says a central bank report.
Argentina's Central Bank chairman, Frederico Sturzenegger, said the G20 members are looking for "specific recommendations" on cryptocurrencies.
Time Magazine reported Tuesday that the Russian government helped Venezuela develop the petro cryptocurrency with the support of Vladimir Putin.
The US Treasury Department has just published five tips for building blockchain projects based on lessons learned during work on a proof-of-concept.
A report from the Bank of France advocates strict regulations for crypto-assets, including a ban on activity by banks, insurers and trust companies.