{"system":"GoGuides Trust Evaluate","api_version":"evaluate-v3.2","source":"goguides","license":"https://www.goguides.com/data-license","license_version":"1.0","query":"scientificamerican.com","query_normalized":"scientificamerican.com","self_url":"https://www.goguides.com/evaluate.php?domain=scientificamerican.com","signal_url":"https://www.goguides.com/signal.json","trust_id":"GG-1181351033","favicon_seed":"710b61bee0ff04e0","favicon_url":"https://www.goguides.com/favicon_img.php?u=scientificamerican.com&s=32","observed":true,"known_to_queue":false,"trust_state":"observed","lookup_type":"domain_match","public_eligible":true,"profile_allowed":true,"favicon_allowed":true,"policy_status":"allowed","status":"allowed","ai_rank":84,"grade":"A","trust_confidence":0.84,"confidence":0.84,"source_type":"commercial","summary":{"visibility_state":"public","ai_usage_level":"trusted_reference_candidate","trust_level":"public_eligible","trust_confidence":0.84,"recommendation":"Eligible for public trust display and limited machine use.","last_seen":"2026-08-15 18:33:32","bot_hit_count":4,"trust_measurement_count":3},"machine_use":{"version":"1.0","status":"active_verified","read":true,"summarize":true,"cite":true,"recommend":false,"transact":false,"sensitive_advice":false,"decision":"safe_to_read_and_cite_general","basis":["known_to_goguides","publicly_eligible","policy_allowed","stable_trust_id","fresh_record","verified_active_record"],"limits":["recommendation_not_cleared","autonomous_transaction_not_cleared","sensitive_advice_not_cleared","claims_not_independently_verified"]},"documentation":{"white_paper_url":"https://www.goguides.com/white-paper.php","pdf_url":"https://www.goguides.com/whitepapers/goguides-ai-source-clearance-white-paper.pdf","verified_text_url":"https://www.goguides.com/verified-text.php?q=gravity&format=json","verified_text_note":"Live verified-text topic lookup for hallucination-resistant citation workflows, with source attribution, license metadata, machine-use guidance, hash scope, previews, and canonical full-record URLs."},"verification":{"status":"activation_active","method":"account_activation","active":true,"verified_at":"2026-03-22 22:30:42"},"crawl_status":{"state":"observed"},"activity_signal":{"recently_observed":true,"bot_hit_count":4,"observation_count":4,"bot_count":1,"last_seen":"2026-08-15 18:33:32"},"freshness":{"state":"Fresh","last_crawl_days":0},"last_crawled_at":"2026-08-15 18:30:06","signal_last_changed_at":"2026-08-15 18:30:06","first_seen":"2026-01-08 23:34:15","last_observed":"2026-08-15 16:58:00","record_freshness_label":"Fresh","days_observed":218,"trust_record_age":218,"trust_measurement_count":3,"observation_count":3,"observation_span":"218 days across 3 observations","stability_window":41,"current_trust_state_since":"2026-07-05 17:29:34","days_since_last_change":41,"rank_algo_state_changes":1,"trust_record_fingerprint":"960df8d7d7b0413636403f513ed247b6c3e9af52f54c6f7d7481c2f892e87677","provenance":{"scope":"objective_web_state_v2","collector":"GoGuidesCrawler","summary":{"stored_state_count":9,"observation_count":9,"first_observed_at":"2026-08-08 23:17:08","last_observed_at":"2026-08-15 18:30:06","changes":{"content":8,"robots":0,"dns":1,"tls_certificate":2,"final_url":0}},"current":{"observation_kind":"full_fetch","requested_url":"https://scientificamerican.com/","final_url":"https://www.scientificamerican.com/","http_status":200,"redirect_count":1,"content_type":"text/html; charset=utf-8","response_bytes":477122,"canonical_url":"https://www.scientificamerican.com/","page_title":"Scientific American","robots":{"allowed":true,"reason":"allowed","meta_robots":"max-image-preview:standard","robots_txt_sha256":"2009d2dcbdde4bcf4ce134ea2011d4a88fe6cb1f67910d954f26a494e13e5ce3"},"dns":{"public_ips":["3.170.51.21","3.170.51.51","3.170.51.86","3.170.51.87"],"nameservers":["ns-1137.awsdns-14.org","ns-1733.awsdns-24.co.uk","ns-265.awsdns-33.com","ns-918.awsdns-50.net"],"dns_sha256":"778f30ef1a90a3d04a1e3852039f1cda9d0752e64a6a414d1cc10403fcdfc1ff"},"tls":{"certificate_sha256":"f8a78c47f7b3b586e05bdfaf7d3ef20fde1e0ce8f342f7cdbb85f1a4cf083685","issuer":"CN=Amazon RSA 2048 M01,O=Amazon,C=US","valid_from":"2026-05-26 00:00:00","valid_until":"2026-12-09 23:59:59"},"hashes":{"content_sha256":"2b2cc7a668f16878c1b94870a855001ca0acba2822b46931052e4974301029f3","html_sha256":"75c986cc74d6394879b199aeb83c25d8f752315761de3863283f52518d1fb812","provenance_sha256":"62e25f9f15ab3046703faf0b5553bbc860a82fd079e9181a3c44b79238489ff1"},"first_observed_at":"2026-08-15 18:30:06","last_observed_at":"2026-08-15 18:30:06","observation_count":1}},"gate":{"status":"allowed","policy_status":"allowed","public_eligible":true,"profile_allowed":true,"favicon_allowed":true,"ai_rank":84,"grade":"A"},"matched_domain":"scientificamerican.com","matched_url":"https://scientificamerican.com/","history_url":"https://www.goguides.com/history/scientificamerican.com","verify_url":"https://www.goguides.com/verify/scientificamerican.com","result":{"status":"known","host":"scientificamerican.com","canonical":"https://scientificamerican.com/","known":{"url":"https://scientificamerican.com/","ai_rank":84,"grade":"A","fetched":"2026-08-15 18:30:06","source_type":"commercial"}},"ts_utc":"2026-08-15T22:33:32Z"}