then any individual who is the person's proxy under IC 16-36-7-42(c) and who is available to act and has priority to act may execute an out of hospital DNR declaration for the person.
The person who combines the separately signed counterparts into a single composite document must do so not later than ten (10) business days after the person receives all of the separately signed tangible, paper counterparts. Any scanned, photocopied, or other accurate copy of the single, composite document shall be treated as validly signed under this subsection if the single, composite document contains the complete text of the out of hospital DNR declaration and all required signatures.
A health care provider or person who disputes the validity of an out of hospital DNR declaration described under this subsection has the burden of proving the invalidity of the declaration or noncompliance with this subsection, as applicable, by a preponderance of the evidence.
IC 16-36-5-11