Attorney General Catherine Hanaway's office raised minimum-age concerns against five of six targeted prediction platforms that received her cease-and-desist letters, identifying Crypto.com for allowing 18-year-old users while Missouri requires sports bettors to be 21

How governments worldwide set rules for digital assets through legislation, agency rulemaking, licensing regimes and court fights.

Futures, options, and perpetual swaps tied to digital-asset prices, letting traders hedge or lever positions and often dwarfing spot volumes.