Jack Dorsey, ex-Twitter CEO and crypto enthusiast, is urging Signal Messenger to adopt Bitcoin for peer-to-peer payments. He believes Bitcoin could enhance Signal's crypto strategy, moving away from altcoins. Dorsey's suggestion aligns with other industry leaders like former PayPal president David Marcus, who advocate for Bitcoin's use in non-transactional apps. Currently, Signal supports payments with Sentz, previously known as MobileCoin. Despite past controversies over its MobileCoin integration, Signal has yet to comment on potential Bitcoin adoption.