Since its release in 2009, Bitcoin has transformed from a peer-to-peer electronic cash system into a major digital store of value. As more people embrace its decentralized nature and limited supply, a new group of companies is building the professional infrastructure needed for the asset to mature. These firms focus on everything from secure custody to programmable applications, moving the ecosystem away from short-term trading toward long-term financial utility. Related: Cathie Wood sends blunt message ...