{"fields":[{"name":"security_id","description":"Stable Cohort 1.1 PFHC security identifier"},{"name":"segment_start","description":"Inclusive calendar start for the dated segment"},{"name":"segment_end_exclusive","description":"Exclusive calendar end of segment"},{"name":"evidence_tier","description":"A, B, B2_FTD, INFERRED or C_UNRESOLVED"},{"name":"ticker","description":"Issuer symbol as supported by the tier; blank if unresolved"},{"name":"issuer_cik","description":"SEC issuer CIK as evidenced; blank if unresolved"},{"name":"class_evidence","description":"The stated scope of share-class evidence, not exchange confirmation"}]}