Massachusetts General Laws Part I. Administration of the Government (Ch. 1-182) Ch. 4, § 9B

The impression or stamping of the established seal of a court, public office, public officer or corporation upon a paper shall be taken and held to be the seal of such court, public office, public officer or corporation, and valid in law to the same extent that an impression of such seal would be if made on wax or wafer attached to such paper. Electronically imprinting the established seal of a court in a form authorized by the supreme judicial court, appeals court, the trial court or any department of the trial court of the commonwealth shall be taken and held to be the seal of such court.