The most authoritative and relevant primary information comes from an official Nasdaq.com article announcing plans to launch yes-or-no prediction market options linked to the Nasdaq 100 index. This directly describes a binary options product resembling a binary betting structure. The article’s provenance and detailed explanation of product features suggest that Nasdaq is actively entering the binary or prediction market sphere—albeit through a regulated, exchange-listed binary options product rather than a decentralized or gambling-style market. Remaining sources either provide broader context about prediction markets, legal regulation, or Nasdaq’s technology platform and do not contradict this claim. Since the announcement reflects intention and product introduction, not full-scale market operation yet, the evidence supports a probable but not definitive market entry. Thus, the statement that 'Nasdaq has entered the binary betting market' is likely true, though framed in a regulated financial context rather than a pure betting environment.