The Securities and Exchange Commission has issued scores of subpoenas and information requests to technology companies and advisers involved in the red-hot market for digital tokens, according to people familiar with the matter. The sweeping probe significantly ratchets up the regulatory pressure on the multibillion-dollar U.S. market for raising funds in cryptocurrencies.

It follows a series of warning shots from the top U.S. securities regulator suggesting that many token sales, or initial coin offerings, may be violating Read more from wsj.com…

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