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Amongst the world governments and economies, the cryptocurrency has been a hot topic of debate. Many governments think that accepting the cryptocurrency for legal use and transactions would eventually cause the loss of economic power and a shift towards decentralized economies across the world. Though many countries so far have permitted cryptocurrencies, many others have still put these under high scrutiny and analysis. Some countries though have banned crypto, its use, possession as well as trade. This article identifies and highlights the blockchain regulations in the U.S. and some key regions in the world. 
As per The Columbia Science and Technology Law Review, the regulatory responses to the rising technologies like blockchain, range from eagerness to suspicion to complete indifference. 
In the U.S. 
The new legislation is being put in place that proposes the exclusion of crypto from the securities laws. Congress introduced 22 bills in 2019, that address the blockchain and cryptocurrency policy to be implemented in 2020. It mentions three key policy areas:
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