Fintech Stock Block Is Trying to Prove That the Ultimate Cryptocurrency Has a Real Use Case, But Will It Work?

Block's Square segment launched Bitcoin payment acceptance for its 4+ million U.S. merchants in March 2026, with 1 million sellers activating the feature by mid-May. While Bitcoin activities currently represent only 2.3% of Block's gross profit, the move represents a significant step toward establishing cryptocurrency as a practical medium of exchange rather than just an investment asset.