What is the court procedure that proves a will’s validity called?

The court procedure that proves a will's validity is known as probate. Probate is a legal process that takes place after someone dies, where the deceased person's will is validated by the court, and their assets are distributed according to their wishes as stated in the will. During probate, the court assesses whether the will is authentic, ensures that it adheres to applicable laws, and appoints an executor to manage the estate.

The other options, while related to estate and inheritance processes, do not directly address the procedure for validating a will. Intestate succession refers to the distribution of a deceased person's assets when they die without a valid will. A testamentary hearing could be a part of the probate process but is not the correct term for the overall procedure itself. The legacy process is not a recognized legal term in the context of will validation or probate. Thus, the correct term for the procedure that confirms a will's validity is indeed probate.