Sarah Ferguson was paid more than £200,000 for her work for the company and a leaked contract reveals she was in line for a separate bonus worth £1.2m.
She also received a stake in the business, which proposed using solar generators to reduce the cost of the energy-intensive computer calculations needed to generate or "mine" the digital currency Bitcoin.
Her contract stipulated that she required first-class travel, five-star hotels and the services of a professional hairdresser and make-up artist for the maximum of four "networking events" she would attend on the company's behalf.
It said she did not "hold herself out as an expert on the solar industry" and therefore accepted no responsibility for "industry-related information or commercial assessments" used as the basis for her statements promoting the company.




