{"system":"GoGuides Change Intelligence","capability_id":"goguides.change_intelligence","api_version":"change-v1","scope":"domain_root_change_intelligence","domain":"luyenthibedu.com","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://www.luyenthibedu.com/","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":"2026-09-24 22:37:19","last_loaded_at":"2026-09-27 15:47:13"},"current_observation":{"id":14822019,"timestamp_used":"2026-09-27 15:47:13","timestamp_basis":"last_observed_at","first_observed_at":"2026-09-27 15:47:13","last_observed_at":"2026-09-27 15:47:13","observation_count":1},"latest_change":{"previous_observation":{"id":14359832,"timestamp_used":"2026-09-24 22:37:19","timestamp_basis":"last_observed_at","first_observed_at":"2026-09-24 22:37:19","last_observed_at":"2026-09-24 22:37:19","observation_count":1},"current_observation":{"id":14822019,"timestamp_used":"2026-09-27 15:47:13","timestamp_basis":"last_observed_at","first_observed_at":"2026-09-27 15:47:13","last_observed_at":"2026-09-27 15:47:13","observation_count":1},"state":"changed","observation_gap":{"detected":false,"reason":null},"change":{"detected":true,"flags":{"text_changed":false,"structured_data_changed":false,"schema_type_mask_changed":false,"headers_changed":true,"word_count_changed":false,"internal_link_count_changed":false,"external_link_count_changed":false,"outbound_links_changed":false,"ai_policy_mask_changed":false,"canonical_url_changed":false,"final_url_changed":false,"http_status_changed":false,"publisher_declaration_changed":null},"magnitude":{"text_simhash_hamming_distance":0,"word_count_delta":0,"internal_link_count_delta":0,"external_link_count_delta":0}},"before":{"requested_url":"https://www.luyenthibedu.com/","final_url":"https://www.luyenthibedu.com/","canonical_url":"https://www.luyenthibedu.com/","http_status":200,"text_simhash":"17608759740597400572","text_simhash_hex":"F45EE1B05981F3FC","structured_data_sha256":"0b4d0c7f86385d630a150e6520efeded1f994d8b468820179ea77baabae16963","schema_type_mask":"147983","headers_sha256":"c0714c7b5207b0f52175f7622970ce17d6d61549ff2ed83ffdfeccee17c1ef12","word_count":500,"internal_link_count":31,"external_link_count":0,"outbound_links_sha256":"a5889f1dcaa097ab0bade787686225c8a9f66620d4651f0d0b7d74c1d37a5035","ai_policy_mask":"1","publisher_declaration_fingerprint":null},"after":{"requested_url":"https://www.luyenthibedu.com/","final_url":"https://www.luyenthibedu.com/","canonical_url":"https://www.luyenthibedu.com/","http_status":200,"text_simhash":"17608759740597400572","text_simhash_hex":"F45EE1B05981F3FC","structured_data_sha256":"0b4d0c7f86385d630a150e6520efeded1f994d8b468820179ea77baabae16963","schema_type_mask":"147983","headers_sha256":"03f380a55e4962f33650260bb8f20b28a66328193f47b473762cf072f75c7d51","word_count":500,"internal_link_count":31,"external_link_count":0,"outbound_links_sha256":"a5889f1dcaa097ab0bade787686225c8a9f66620d4651f0d0b7d74c1d37a5035","ai_policy_mask":"1","publisher_declaration_fingerprint":null},"compatibility":{"refresh_recommended":false,"refresh_reason":[]},"classification_method":"deterministic_ruleset","classification_version":"change-v1"},"events":[{"previous_observation":{"id":14359832,"timestamp_used":"2026-09-24 22:37:19","timestamp_basis":"last_observed_at","first_observed_at":"2026-09-24 22:37:19","last_observed_at":"2026-09-24 22:37:19","observation_count":1},"current_observation":{"id":14822019,"timestamp_used":"2026-09-27 15:47:13","timestamp_basis":"last_observed_at","first_observed_at":"2026-09-27 15:47:13","last_observed_at":"2026-09-27 15:47:13","observation_count":1},"state":"changed","observation_gap":{"detected":false,"reason":null},"change":{"detected":true,"flags":{"text_changed":false,"structured_data_changed":false,"schema_type_mask_changed":false,"headers_changed":true,"word_count_changed":false,"internal_link_count_changed":false,"external_link_count_changed":false,"outbound_links_changed":false,"ai_policy_mask_changed":false,"canonical_url_changed":false,"final_url_changed":false,"http_status_changed":false,"publisher_declaration_changed":null},"magnitude":{"text_simhash_hamming_distance":0,"word_count_delta":0,"internal_link_count_delta":0,"external_link_count_delta":0}},"before":{"requested_url":"https://www.luyenthibedu.com/","final_url":"https://www.luyenthibedu.com/","canonical_url":"https://www.luyenthibedu.com/","http_status":200,"text_simhash":"17608759740597400572","text_simhash_hex":"F45EE1B05981F3FC","structured_data_sha256":"0b4d0c7f86385d630a150e6520efeded1f994d8b468820179ea77baabae16963","schema_type_mask":"147983","headers_sha256":"c0714c7b5207b0f52175f7622970ce17d6d61549ff2ed83ffdfeccee17c1ef12","word_count":500,"internal_link_count":31,"external_link_count":0,"outbound_links_sha256":"a5889f1dcaa097ab0bade787686225c8a9f66620d4651f0d0b7d74c1d37a5035","ai_policy_mask":"1","publisher_declaration_fingerprint":null},"after":{"requested_url":"https://www.luyenthibedu.com/","final_url":"https://www.luyenthibedu.com/","canonical_url":"https://www.luyenthibedu.com/","http_status":200,"text_simhash":"17608759740597400572","text_simhash_hex":"F45EE1B05981F3FC","structured_data_sha256":"0b4d0c7f86385d630a150e6520efeded1f994d8b468820179ea77baabae16963","schema_type_mask":"147983","headers_sha256":"03f380a55e4962f33650260bb8f20b28a66328193f47b473762cf072f75c7d51","word_count":500,"internal_link_count":31,"external_link_count":0,"outbound_links_sha256":"a5889f1dcaa097ab0bade787686225c8a9f66620d4651f0d0b7d74c1d37a5035","ai_policy_mask":"1","publisher_declaration_fingerprint":null},"compatibility":{"refresh_recommended":false,"refresh_reason":[]},"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/luyenthibedu.com","state":"https://www.goguides.com/state/luyenthibedu.com","evaluate":"https://www.goguides.com/evaluate/luyenthibedu.com","history":"https://www.goguides.com/history/luyenthibedu.com"},"ts_utc":"2026-10-02T19:53:24Z"}