{"system":"GoGuides Change Intelligence","capability_id":"goguides.change_intelligence","api_version":"change-v1","scope":"domain_root_change_intelligence","domain":"challenge30.org","classification_method":"deterministic_ruleset","classification_version":"change-v1","license":"https://www.goguides.com/data-license","license_version":"2.0","status":"observed","change_state":"changed","public_eligible":true,"tracked_url":"https://challenge30.org/","tracked_url_scope":"domain_root","root_selection_method":"central_domain_authority_root_precedence_v1","comparison_scope":"consecutive_stored_states_of_same_authoritative_root_url","history":{"observations_loaded":2,"change_events_returned":1,"limit":25,"first_loaded_at":"2026-08-24 13:36:45","last_loaded_at":"2026-09-27 18:28:03"},"current_observation":{"id":14836714,"timestamp_used":"2026-09-27 18:28:03","timestamp_basis":"last_observed_at","first_observed_at":"2026-09-27 18:28:03","last_observed_at":"2026-09-27 18:28:03","observation_count":1},"latest_change":{"previous_observation":{"id":7327526,"timestamp_used":"2026-08-24 13:36:45","timestamp_basis":"last_observed_at","first_observed_at":"2026-08-24 13:36:45","last_observed_at":"2026-08-24 13:36:45","observation_count":1},"current_observation":{"id":14836714,"timestamp_used":"2026-09-27 18:28:03","timestamp_basis":"last_observed_at","first_observed_at":"2026-09-27 18:28:03","last_observed_at":"2026-09-27 18:28:03","observation_count":1},"state":"changed","observation_gap":{"detected":false,"reason":null},"change":{"detected":true,"flags":{"text_changed":true,"structured_data_changed":null,"schema_type_mask_changed":false,"headers_changed":true,"word_count_changed":true,"internal_link_count_changed":true,"external_link_count_changed":true,"outbound_links_changed":true,"ai_policy_mask_changed":true,"canonical_url_changed":null,"final_url_changed":false,"http_status_changed":true,"publisher_declaration_changed":null},"magnitude":{"text_simhash_hamming_distance":25,"word_count_delta":492,"internal_link_count_delta":25,"external_link_count_delta":1}},"before":{"requested_url":"https://challenge30.org/","final_url":"https://challenge30.org/","canonical_url":null,"http_status":525,"text_simhash":"7412798517552817081","text_simhash_hex":"66DF8CFA1E4723B9","structured_data_sha256":null,"schema_type_mask":"0","headers_sha256":"45db478df06b52fc17007051c51b57cdc2da1cdedd981353c53feb5e4759b2e4","word_count":112,"internal_link_count":0,"external_link_count":5,"outbound_links_sha256":"11cc876173e586d1619e19ab98008352b9ee2ca17e50a97db977ea5ae10892d0","ai_policy_mask":"49","publisher_declaration_fingerprint":null},"after":{"requested_url":"https://challenge30.org/","final_url":"https://challenge30.org/","canonical_url":null,"http_status":200,"text_simhash":"3961278539927650870","text_simhash_hex":"36F949D824C40236","structured_data_sha256":null,"schema_type_mask":"0","headers_sha256":"152aab850a0cf389670be75d70fc041089993afb4c4d06ec9cbb0fafd257dab6","word_count":604,"internal_link_count":25,"external_link_count":6,"outbound_links_sha256":"b7f7d3ee4866c703da4243fb2b32b3b7c349d2a53e5d5bb1d67769ca27777e92","ai_policy_mask":"5","publisher_declaration_fingerprint":null},"compatibility":{"refresh_recommended":true,"refresh_reason":["text_changed","outbound_links_changed","ai_policy_mask_changed","http_status_changed"]},"classification_method":"deterministic_ruleset","classification_version":"change-v1"},"events":[{"previous_observation":{"id":7327526,"timestamp_used":"2026-08-24 13:36:45","timestamp_basis":"last_observed_at","first_observed_at":"2026-08-24 13:36:45","last_observed_at":"2026-08-24 13:36:45","observation_count":1},"current_observation":{"id":14836714,"timestamp_used":"2026-09-27 18:28:03","timestamp_basis":"last_observed_at","first_observed_at":"2026-09-27 18:28:03","last_observed_at":"2026-09-27 18:28:03","observation_count":1},"state":"changed","observation_gap":{"detected":false,"reason":null},"change":{"detected":true,"flags":{"text_changed":true,"structured_data_changed":null,"schema_type_mask_changed":false,"headers_changed":true,"word_count_changed":true,"internal_link_count_changed":true,"external_link_count_changed":true,"outbound_links_changed":true,"ai_policy_mask_changed":true,"canonical_url_changed":null,"final_url_changed":false,"http_status_changed":true,"publisher_declaration_changed":null},"magnitude":{"text_simhash_hamming_distance":25,"word_count_delta":492,"internal_link_count_delta":25,"external_link_count_delta":1}},"before":{"requested_url":"https://challenge30.org/","final_url":"https://challenge30.org/","canonical_url":null,"http_status":525,"text_simhash":"7412798517552817081","text_simhash_hex":"66DF8CFA1E4723B9","structured_data_sha256":null,"schema_type_mask":"0","headers_sha256":"45db478df06b52fc17007051c51b57cdc2da1cdedd981353c53feb5e4759b2e4","word_count":112,"internal_link_count":0,"external_link_count":5,"outbound_links_sha256":"11cc876173e586d1619e19ab98008352b9ee2ca17e50a97db977ea5ae10892d0","ai_policy_mask":"49","publisher_declaration_fingerprint":null},"after":{"requested_url":"https://challenge30.org/","final_url":"https://challenge30.org/","canonical_url":null,"http_status":200,"text_simhash":"3961278539927650870","text_simhash_hex":"36F949D824C40236","structured_data_sha256":null,"schema_type_mask":"0","headers_sha256":"152aab850a0cf389670be75d70fc041089993afb4c4d06ec9cbb0fafd257dab6","word_count":604,"internal_link_count":25,"external_link_count":6,"outbound_links_sha256":"b7f7d3ee4866c703da4243fb2b32b3b7c349d2a53e5d5bb1d67769ca27777e92","ai_policy_mask":"5","publisher_declaration_fingerprint":null},"compatibility":{"refresh_recommended":true,"refresh_reason":["text_changed","outbound_links_changed","ai_policy_mask_changed","http_status_changed"]},"classification_method":"deterministic_ruleset","classification_version":"change-v1"}],"semantics":{"state_changed":"At least one deterministic stored field changed and the compared observation windows do not overlap.","state_unchanged":"No available deterministic compared field changed and the compared observation windows do not overlap.","state_unknown":"No deterministic comparison can be established from the available stored fields.","state_insufficient_history":"Fewer than two distinct stored root-state rows are available for a comparison pair.","state_observation_gap":"Stored state windows overlap or recur, so chronological adjacency cannot be proved even though mechanical field measurements are still returned.","text_simhash_hamming_distance":"Mechanical 64-bit Hamming distance between stored text simhash values; 0 through 64.","count_delta":"Current stored numeric count minus previous stored numeric count.","hash_change":"Equality/difference only; no unsupported distance metric is invented for cryptographic hashes.","publisher_declaration_changed":"Compared only when explicitly named declaration/self-claim data exists in stored evidence_json; otherwise null.","materiality":"No major/minor/material rewrite label is assigned by change-v1."},"links":{"self":"https://www.goguides.com/changes/challenge30.org","state":"https://www.goguides.com/state/challenge30.org","evaluate":"https://www.goguides.com/evaluate/challenge30.org","history":"https://www.goguides.com/history/challenge30.org"},"ts_utc":"2026-10-03T00:40:15Z"}