First-person methodologies for investigating empathy have historically faced two challenges: epistemic suspicion of self-observation as valid data, and lack of systematic protocols ensuring reliability and bias mitigation. This paper introduces the Phenomenological Evidence Ecosystem, a structured methodology for investigating empathy infrastructure as described in Empathy Systems Theory (EST). The ecosystem operationalizes the Recognition Principle—establishing that researcher-as-phenomenon investigations achieve validity when diverse, independent others pre-reflectively recognize articulated structures in their own experience—by transforming lived experience into auditable, structured data while maintaining phenomenological integrity. Core components include: standardized terminology connecting classical phenomenology to EST constructs (C-A-E-I architecture), structured logging with prediction-verification structure, mandatory counter-instance documentation, and forensic-grade audit trail. Building upon Petitmengin's micro-phenomenology, Hurlburt's Descriptive Experience Sampling, Varela's neurophenomenology, and Giorgi's descriptive phenomenological method, the ecosystem contributes systematic construct mapping, prediction-verification structure, and recognition-based validation. The methodology addresses five requirements for legitimate first-person research: terminological precision, structural documentation, bias mitigation, audit trail integrity, and intersubjective validation. Applications extend to clinical psychology, organizational settings, AI ethics governance, and contemplative science. This framework establishes a new standard for first-person empathy research, enabling systematic investigation of empathy as biological infrastructure maintaining narrative coherence.