It was billed for success, a would-be unicorn in an age of unicorns. Now, after a five-year roller coaster ride, Altada has admitted it is insolvent. A provisional liquidator has been appointed to the troubled Cork start-up that provided artificial intelligence to the financial services sector.  The debts run into the millions – Revenue alone is owed €1.9 million, mostly in warehoused PAYE and PRSI debt dating back as far as February 2020. But there is undoubtedly intellectual property left in the business and investors have been circling, considering whether to buy the firm which was last month placed in…