1. The Catalan nationality is acquired in accordance with the provisions of the law, by birth, marriage, residence, adoption or a reciprocity agreement with another State.
2. All citizens of Catalonia who within a year after the enactment of this Constitution freely choose to do so, will enjoy dual citizenship, Catalan and Spanish, providing Spain recognizes their right to preserve the latter.
3. Catalans shall continue to be European citizens with all the rights and duties they enjoy at the time Catalonia becomes a republic.