Your data is your property. Own it. Own Your Data T-Shirt is part of the limited edition collection designed by artist Daryl Kelly. Bitcoin is a trustless system which means that the participants involved do not need to know or trust each other or a third party for the system to function. In a trustless environment, there is no single entity that has authority over the system, and consensus is achieved without participants having to know or trust anything but the system itself.
Bitcoin and other Proof of Work blockchains achieve trustlessness by providing economic incentives for honest behavior. There is a monetary incentive to maintain network security, and trust is distributed between many participants. This makes the blockchain mostly resilient to vulnerabilities and attacks, while still eliminating single points of failure.