Unless otherwise ordered by a court, directed by a principal, or provided by a power of attorney, a custodian shall disclose to an agent with specific authority over digital assets or general authority to act on behalf of a principal a catalogue of electronic communications sent or received by the principal and digital assets, other than the content of electronic communications, of the principal if the agent provides the custodian: A written request for disclosure in physical or electronic form; An original or copy of the power of attorney that grants the agent specific authority over digital assets or general authority to act on behalf of the principal; A certification by the agent, under penalty of perjury, that the power of attorney is in effect; and If requested by the custodian: A number, username, address, or other unique subscriber or account identifier assigned by the custodian to identify the principal’s account; or Evidence linking the account to the principal.