Hello, for Delhi you need to fulfil either of the following criteria to acquire a domicile certificate

• Has been a resident of Delhi for the past 3 years
• Owns a house/property/land in Delhi
• Name should be included in the voter list
• Owns a ration card in the city

In case you are staying in Delhi temporally furnishing your nativity certificate of Uttarakhand itself will be enough,

Hope this helps.