Is the marriage contract conducted via video call, in which the wife appointed one of the witnesses to solemnize her marriage in the presence of her father, and which was ratified and publicly announced before consummation, valid, and what are its implications?

A marriage contract conducted via video call is valid. It is sufficient to hear the woman's voice if manipulation is not a concern. For the contract to be valid, it must be performed by the woman's guardian (wali) or his agent, and not by the woman herself. However, any代理 [agency/authorization] granted by the woman is valid according to the Hanafi school of thought, and the contract is not to be invalidated as long as it was conducted according to an approved school of thought and the father approved it. Two Muslim witnesses are required, and the guardian cannot be one of them. Anyone present at the contract who is eligible to be a witness is considered a witness. The imam of the mosque counts as a second witness, and the wife's brother can be a witness to his sister's marriage. The contract is valid, and praise be to Allah.