Last week the big news was the regulation initial coin offerings, one of the year’s hottest cryptofinance and investment rends. This week, it’s the split in the bitcoin community, leading to two varieties of the digital currency.

“It looks like ICOs, shorthand for initial coin offerings, are about to undergo a lot more scrutiny. The SEC has concluded that the digital currency financing events will be regulated as securities, meaning unregistered offerings could be subject to criminal punishment,” reports TechCrunch.

American Banker is stronger in its assessment: “SEC report may put an end to ICO boom.”

Read the SEC Investor Bulletin itself here.

CoinDesk provides a primer on the bitcoin split.