The phrase "a trusted basis" is correct and usable in written English.
You can use it when referring to a foundation or starting point that is reliable and dependable.
Example: "We need to establish a trusted basis for our collaboration to ensure that both parties feel secure in the partnership."
Alternatives: "a reliable foundation" or "a dependable framework".
Andava would manage Aeroflot's money on a trust basis, using an account at the Union Bank of Switzerland.
The treasury operations that Andava performs, on a trust basis, for Aeroflot are relatively simple; in the past they were done by Aeroflot's own Center for International Payments.
However, like many social networks, age verification is implemented on a trust basis - a person signing up simply has to lie about their date of birth in order to get around the check.
Free camping works on a trust basis; everything campers bring into sites needs to be taken out again and special care must be taken not to disturb wildlife or damage the natural beauty of the area.
If it is true that Pakistani intelligence was helpful in locating bin Laden, and kept that matter secret, then we can begin to sort out our fraught relationship with that troubled country on a more equitable, trusting basis.
One cable cites the "assumption that L/1 not recruitable in classic sense," and discusses how to induce Bani-Sadr to provide information on a regular basis to "a trusted friend in the U.S. Embassy who is interested in economic affairs". The effort to recruit Bani-Sadr really began earlier, when the Khomeini revolutionaries were still in exile and preparing to return to Iran.
Data provided on a transient-trust basis might include floor plans of a building, medical information about occupants or satellite maps of a given area.
Overall we believe that these approaches provide an excellent trust basis for our lists.
It is potentially misleading to the public, clinicians, managers, and commissioners to praise or condemn a trust on the basis of either measure.
