{"system":"GoGuides Web State","api_version":"web-state-v3","scope":"objective_web_state_v3","domain":"centerwatch.com","status":"observed","public_eligible":true,"observation":{"id":10311403,"requested_url":"http://www.centerwatch.com/clinical-trials/listings/studylist.aspx?CatID=295","final_url":"https://www.centerwatch.com/clinical-trials/listings/studylist.aspx?CatID=295","http_status":404,"first_observed_at":"2026-08-28 06:28:40","last_observed_at":"2026-08-28 06:28:40","observation_count":1},"state":{"text_simhash":"4525857911864728383","schema_type_mask":0,"headers_sha256":"62c8093d76fa101daf96115e0b4e5f394249ec06b79fc3211db645b2f0f992f0","word_count":34,"internal_link_count":9,"external_link_count":2,"outbound_links_sha256":"8c60f4816d57bcb9803069f8e05e527cfc7ccded007aa99e28e4da7368ab3055","ai_policy_mask":17,"schema_types":{"mask_version":"schema-type-mask-v1","set_bits":[],"types":[],"unknown_bits":[],"semantics_url":"https://www.goguides.com/docs/web-state.json#schema_type_mask"},"ai_policy":{"mask_version":"ai-policy-mask-v1","scope":"observed_machine_directives","robots_agent":"GoGuidesCrawler","set_bits":[0,4],"flags":["goguides_crawler_allowed","meta_noindex"],"unknown_bits":[],"semantics_url":"https://www.goguides.com/docs/web-state.json#ai_policy_mask"}},"semantics":{"web_state_version":"web-state-v3","bitmasks":{"ai_policy_mask":{"version":"ai-policy-mask-v1","url":"https://www.goguides.com/docs/web-state.json#ai_policy_mask"},"schema_type_mask":{"version":"schema-type-mask-v1","url":"https://www.goguides.com/docs/web-state.json#schema_type_mask"}}},"links":{"self":"https://www.goguides.com/state/centerwatch.com","evaluate":"https://www.goguides.com/evaluate/centerwatch.com","changes":"https://www.goguides.com/changes/centerwatch.com","history":"https://www.goguides.com/history/centerwatch.com","verify":"https://www.goguides.com/verify/centerwatch.com"},"license":"https://www.goguides.com/data-license","license_version":"2.0","ts_utc":"2026-10-01T11:58:25Z"}