31 CFR 306.101: Evidence required.

Copies of a final judgment, decree, or order of court and of any necessary supplementary proceedings must be submitted. Assignments by a trustee in bankruptcy or a receiver of an insolvent's estate must be supported by evidence of his qualification. Assignments by a receiver in equity or a similar court officer must be supported by a copy of an order authorizing him to assign, or to sell, or to otherwise dispose of, the securities. Where the documents are dated more than 6 months prior to presentation of the securities, there must also be submitted a certificate dated within 6 months of presentation of the securities, showing the judgment, decree, or order, or evidence of qualification, is in full force. Any such evidence must be certified under court seal.