Property of equivalent value may be provisionally attached where...

Property of equivalent value may be provisionally attached where property directly or indirectly derived from criminal activity is unavailable because it has vanished or been laundered. The phrase "or the value of any such property" operates as an independent limb of the definition of proceeds of crime, permitting attachment of substitute assets of equivalent value. Such assets may include property acquired before the alleged criminal activity and need not have a direct nexus with that activity. Restricting attachment only to directly traceable proceeds would render the equivalent-value limb ineffective and undermine the statutory objective.