Whenever you make a Bitcoin transaction, it's recorded on a public ledger called "blockchain." Now, a handful of big banks have partnered (PDF) with New York firm R3 to adopt the cryptocurrency's database system for use in finance. These nine banks, including Goldman Sachs, JPMorgan Chase & Co. and Barclays, will help the firm develop standards and agree on the underlying architecture that the sector will use. After that, they will decide where the software can be applied and then test it out to be sure. Due to the way blockchain works, it has many potential applications: for instance, it could speed up the process of tracking ownerships or the transfer of assets between two people.