Bitcoin and other cryptocurrencies are already starting to shake up the financial services industry. They have also got entrepreneurs thinking about other applications for the blockchain technology that underlies them, including ones that address various processes inside non-financial companies such as contracts, audits and shipping. The digital signatures that certify each transaction and the distributed, write-only online ledger that constitute the core of the blockchain tech have the potential to offer even more security in these and other areas than more traditional approaches used by businesses. Blockchain isn’t the only game in town either.