Kalshi Inc., a prediction market that competes with Polymarket, is raising more than $100 million at a valuation that exceeds $1 billion, according to people familiar with the matter. Paradigm, a venture capital firm focused on cryptocurrency investments, is leading the deal, the people said.Kalshi is similar to Polymarket, which also is completing an investment at a valuation of more than $1 billion. While Kalshi is federally regulated and cleared to operate in the US, Polymarket is not registe...