Minor note: In 2.b.iv. the all-caps "ART" at the end of the line (edited to be underlined in quote) looks like it's just referring to artwork rather than the trusteeship:
Conserve all active artworks in the PIECE, ensuring they are not damaged or altered during their time in the PIECE. If a piece becomes impossible to conserve for any reason, ART may cancel the outgoing loan and request another piece of ART from the originating nation.