According to the source, the claim that Samsung Wallet integrated with Coinbase in the U.S. and Canada cannot be used here because it originates from a competing crypto media outlet. Please share an official announcement from Samsung (Samsung Newsroom or Samsung Wallet blog) or Coinbase (Coinbase Blog or press release) so a compliant, trading-oriented summary with proper citations can be produced.

According to the source, this item cannot be validated because the only reference provided is a tweet from a prohibited media source. Please share an official announcement from Kalshi, Solana Foundation, or Base (e.g., company blog, press release, or their verified X accounts) so a trading-focused summary with proper citations can be produced.