Mass. Gen. Laws ch. 203, § 2: Record of trust; notice

Section 2. If a trust concerning land is created or declared by such instrument, the recording of the instrument, or of a certificate conforming to the requirements of section 35 of chapter 184, in the registry of deeds or the registration office of the land court, in either case for the county or district where the land lies, shall be equivalent to actual notice to every person claiming under a conveyance, attachment or execution thereafter made or levied.