The phrase "a unique link" is correct and usable in written English.
It can be used when referring to a specific connection or relationship that is one-of-a-kind or distinct from others.
Example: "The website provided a unique link to access the exclusive content available only to members."
Alternatives: "a distinct connection" or "an exclusive link".
Son and grandson of MPs, Tony Benn was a unique link back to Labour's early years.
A moment later, the service spits out a unique link that can be shared with friends and family.
His vessel — a football field in length from stem to stern — is a unique link in New York City's chain of municipal waste, a complicated process that begins at 14 pollution control plants, where more than 1.3 billion gallons of wastewater are treated every day.
The more users who've submitted a unique link, the higher it appears on the list.
This will provide them with a unique link they can share however they see fit.
The city where England play their opening Euro 2012 game has a unique link to the UK.
Using a unique linked employer-employee data set of German high-tech start-ups, we estimate Mincer-type wage regressions applying the Hausman-Taylor panel estimator.
Merging data from four different sources, provided by Statistics Netherlands, we construct and analyze a unique linked employer-employee micro dataset of 4582 firms that includes qualitative information on firm innovation.
We are developing a unique linked national database, which contains anonymised individual patient-level data from general practices, hospitals, virology investigations and the death register.
She straddles elite sport, politics and the media and forms a crucial, unique link between the buzzy, feel-good optimism surrounding the Paralympics, and the harsh, uncomfortable reality of life for many disabled people in welfare cuts-era Britain.
Therefore, our findings could be a new and unique link between nutrition and the still incompletely understood human SIDS.
