12.1 Password security. To access Coinbase Services, you must create or receive security details, including a username and password. You are responsible for the security of the electronic device through which you access Coinbase Services and for the security and control of all the security details you use to access Coinbase Services. These include all appropriate measures to prevent the loss, theft or misuse of such an electronic device and to ensure that such an electronic device is both encrypted and password protected. 5.16 Third-party payments. We have no control or responsibility for the supply, quality, security, legality or other aspects of goods or services that you may purchase or receive from third parties (including other Digital Currency Services users) or sell or transfer them to third parties (including other Digital Currency Services users). We are not responsible for ensuring that a third party or seller with whom you enter into transactions enter into or have the right to close the transaction. If you have a problem with goods or services purchased by third parties using digital currency, purchased by third parties or sold to third parties transferred through Digital Currency Services, or if you have a dispute with that third party, you should settle the dispute directly with that third party. API means application programming interface, is not a service and is the subject of a separate agreement. The use of the blockchain gives brands the opportunity to follow the path of a food product of its origin, through every stop it makes, and finally its delivery. If it is established that a food is contaminated, it can be traced back to each stop until it originates. Not only that, but these companies can now see everything else she may have been in contact with, so identifying the problem can happen much earlier and possibly save lives. This is an example of blockchains in practice, but there are many other forms of blockchain implementation.
Enterprise-level data-sharing models are networked information systems that allow users to create profile and storage data and make it accessible to others in accordance with the agreement. We present different mechanisms for sharing user data, taking into account four different systems (1) Single System, (2) Centralized Servers, (3) Decentralized (agent-based, peer-to-peer, service-based) and (4) Blockchain-based (decentralized – incentives). The performance evaluation of the system was carried out by analysing performance metrics that affect ease of use (UX).