Is the marriage contract valid if she is not present?
Question

                I had a proposal come few yrs ago.mans family disapproved of me due to different caste.he wanted tomarry me as did i.i gave him written permission for a nikah.we had a nikah in proxy.i was not present, he was there, two witnesses, a local imam etc.my parents do approve of this marriage but are not aware we actually had nikah.is this nikah jayaz.is it a nikah.we have not committed any haram intimate acts, all we do is talk over phone but had nikah as conversation this is only allowed after nikah.my issue is would a nikah in proxy be valid if i wasn't actually aware of exact day it took place.he did not inform me on the day that this was hapenning as we could not make contact.although i have no objections to this nikah just need to know if islamically it is valid.
Praise be to Allah.Firstly: 
It is not 
    essential for you to be present at the marriage contract; what matters is 
    that it be proven that you give your consent, and written permission is 
    sufficient for that. 
Secondly: 
What matters 
    is that your wali (guardian) or his wakeel (representative) should be 
    present, because a marriage contract without the wali of the woman is not 
    valid, because the Prophet  (blessings and peace of Allaah be upon him) 
    said: “There is no marriage without a wali.” Narrated by Abu Dawood (2085), 
    al-Tirmidhi (1101) and Ibn Maajah (1881) from the hadeeth of Abu Moosa 
    al-Ash’ari; classed as saheeh by al-Albaani in Saheeh al-Tirmidhi. 
And the 
    Prophet  (blessings and peace of Allaah be upon him)  said: “Any woman 
    who gets married without the permission of her wali, her marriage is 
    invalid, her marriage is invalid, her marriage is invalid.” Narrated by 
    Ahmad (24417), Abu Dawood (2083) and al-Tirmidhi (1102); classed as saheeh 
    by al-Albaani in Saheeh al-Jaami’, no. 2709. 
From your 
    saying “my parents do approve of this marriage but are not aware we actually 
    had nikah” it may be understood that your wali was not present at the nikaah 
    and that his representative was not present either. If that is the case then 
    the marriage contract is not valid, and you have to repeat the marriage 
    contract in the presence of the wali and two witnesses. 
This applies 
    if you have a Muslim wali, such as a father, brother or other guardian. If 
    there is no Muslim wali then your wali is the Muslim qaadi (judge). If there 
    is no qaadi, then it is the director of the Islamic centre or the imam of 
    the mosque. 
You do not 
    mention anything about your parents’ religion. 
Based on 
    that, if none of your guardians are Muslim, then the way in which the 
    marriage contract was done is valid. But if one of your guardians is Muslim, 
    then the marriage contract must be repeated in his presence, or he must 
    appoint someone to do the marriage contract on his behalf. 
And Allaah 
    knows best.