{"system":"GoGuides Change Intelligence","capability_id":"goguides.change_intelligence","api_version":"change-v1","scope":"domain_root_change_intelligence","domain":"audiotuning.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://audiotuning.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":5,"change_events_returned":4,"limit":25,"first_loaded_at":"2026-08-26 12:51:16","last_loaded_at":"2026-09-17 06:28:18"},"current_observation":{"id":13260757,"timestamp_used":"2026-09-17 06:28:18","timestamp_basis":"last_observed_at","first_observed_at":"2026-09-17 06:28:18","last_observed_at":"2026-09-17 06:28:18","observation_count":1},"latest_change":{"previous_observation":{"id":13064735,"timestamp_used":"2026-09-15 21:35:06","timestamp_basis":"last_observed_at","first_observed_at":"2026-09-15 21:35:06","last_observed_at":"2026-09-15 21:35:06","observation_count":1},"current_observation":{"id":13260757,"timestamp_used":"2026-09-17 06:28:18","timestamp_basis":"last_observed_at","first_observed_at":"2026-09-17 06:28:18","last_observed_at":"2026-09-17 06:28:18","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":true,"internal_link_count_changed":true,"external_link_count_changed":false,"outbound_links_changed":true,"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":6,"internal_link_count_delta":1,"external_link_count_delta":0}},"before":{"requested_url":"https://audiotuning.com/","final_url":"https://www.audiotuning.com/","canonical_url":"https://www.audiotuning.com/","http_status":200,"text_simhash":"2317144850459488668","text_simhash_hex":"202826F6F8C3719C","structured_data_sha256":"a40ed5d15eb107531e342e4cea9ab6775f0d859210d7f146947de8ccf65ab7e6","schema_type_mask":"151559","headers_sha256":"6262dc8c7baa670dd4e31529de2b4c58f2d8b506d8e6ef5ab05afc80930e26e0","word_count":263,"internal_link_count":76,"external_link_count":4,"outbound_links_sha256":"8e2b9b11e94ba104c743a4d78e23b5e0f4f657c313eae09d5d6d71ad5cc3b042","ai_policy_mask":"1","publisher_declaration_fingerprint":null},"after":{"requested_url":"https://audiotuning.com/","final_url":"https://www.audiotuning.com/","canonical_url":"https://www.audiotuning.com/","http_status":200,"text_simhash":"2317144850459488668","text_simhash_hex":"202826F6F8C3719C","structured_data_sha256":"a40ed5d15eb107531e342e4cea9ab6775f0d859210d7f146947de8ccf65ab7e6","schema_type_mask":"151559","headers_sha256":"0a948fa297aaead27b61504fcf5db36fa045a27e254dbd399c063e10cec5be76","word_count":269,"internal_link_count":77,"external_link_count":4,"outbound_links_sha256":"8ba63c86d6cfee5069435acd86539e34d9237c2a6acb47d69fbf007b6f40ff7c","ai_policy_mask":"1","publisher_declaration_fingerprint":null},"compatibility":{"refresh_recommended":true,"refresh_reason":["outbound_links_changed"]},"classification_method":"deterministic_ruleset","classification_version":"change-v1"},"events":[{"previous_observation":{"id":13064735,"timestamp_used":"2026-09-15 21:35:06","timestamp_basis":"last_observed_at","first_observed_at":"2026-09-15 21:35:06","last_observed_at":"2026-09-15 21:35:06","observation_count":1},"current_observation":{"id":13260757,"timestamp_used":"2026-09-17 06:28:18","timestamp_basis":"last_observed_at","first_observed_at":"2026-09-17 06:28:18","last_observed_at":"2026-09-17 06:28:18","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":true,"internal_link_count_changed":true,"external_link_count_changed":false,"outbound_links_changed":true,"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":6,"internal_link_count_delta":1,"external_link_count_delta":0}},"before":{"requested_url":"https://audiotuning.com/","final_url":"https://www.audiotuning.com/","canonical_url":"https://www.audiotuning.com/","http_status":200,"text_simhash":"2317144850459488668","text_simhash_hex":"202826F6F8C3719C","structured_data_sha256":"a40ed5d15eb107531e342e4cea9ab6775f0d859210d7f146947de8ccf65ab7e6","schema_type_mask":"151559","headers_sha256":"6262dc8c7baa670dd4e31529de2b4c58f2d8b506d8e6ef5ab05afc80930e26e0","word_count":263,"internal_link_count":76,"external_link_count":4,"outbound_links_sha256":"8e2b9b11e94ba104c743a4d78e23b5e0f4f657c313eae09d5d6d71ad5cc3b042","ai_policy_mask":"1","publisher_declaration_fingerprint":null},"after":{"requested_url":"https://audiotuning.com/","final_url":"https://www.audiotuning.com/","canonical_url":"https://www.audiotuning.com/","http_status":200,"text_simhash":"2317144850459488668","text_simhash_hex":"202826F6F8C3719C","structured_data_sha256":"a40ed5d15eb107531e342e4cea9ab6775f0d859210d7f146947de8ccf65ab7e6","schema_type_mask":"151559","headers_sha256":"0a948fa297aaead27b61504fcf5db36fa045a27e254dbd399c063e10cec5be76","word_count":269,"internal_link_count":77,"external_link_count":4,"outbound_links_sha256":"8ba63c86d6cfee5069435acd86539e34d9237c2a6acb47d69fbf007b6f40ff7c","ai_policy_mask":"1","publisher_declaration_fingerprint":null},"compatibility":{"refresh_recommended":true,"refresh_reason":["outbound_links_changed"]},"classification_method":"deterministic_ruleset","classification_version":"change-v1"},{"previous_observation":{"id":12767662,"timestamp_used":"2026-09-09 16:48:29","timestamp_basis":"last_observed_at","first_observed_at":"2026-09-09 16:48:29","last_observed_at":"2026-09-09 16:48:29","observation_count":1},"current_observation":{"id":13064735,"timestamp_used":"2026-09-15 21:35:06","timestamp_basis":"last_observed_at","first_observed_at":"2026-09-15 21:35:06","last_observed_at":"2026-09-15 21:35:06","observation_count":1},"state":"changed","observation_gap":{"detected":false,"reason":null},"change":{"detected":true,"flags":{"text_changed":false,"structured_data_changed":true,"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://audiotuning.com/","final_url":"https://www.audiotuning.com/","canonical_url":"https://www.audiotuning.com/","http_status":200,"text_simhash":"2317144850459488668","text_simhash_hex":"202826F6F8C3719C","structured_data_sha256":"9ac6bd2638ef18e29838f8c5a521633f4f93bd3674f693b4d720c5d482638546","schema_type_mask":"151559","headers_sha256":"e3a7967acd23224fcc83f78c539d54779b298e87808b77ee9efe90c483db1ea7","word_count":263,"internal_link_count":76,"external_link_count":4,"outbound_links_sha256":"8e2b9b11e94ba104c743a4d78e23b5e0f4f657c313eae09d5d6d71ad5cc3b042","ai_policy_mask":"1","publisher_declaration_fingerprint":null},"after":{"requested_url":"https://audiotuning.com/","final_url":"https://www.audiotuning.com/","canonical_url":"https://www.audiotuning.com/","http_status":200,"text_simhash":"2317144850459488668","text_simhash_hex":"202826F6F8C3719C","structured_data_sha256":"a40ed5d15eb107531e342e4cea9ab6775f0d859210d7f146947de8ccf65ab7e6","schema_type_mask":"151559","headers_sha256":"6262dc8c7baa670dd4e31529de2b4c58f2d8b506d8e6ef5ab05afc80930e26e0","word_count":263,"internal_link_count":76,"external_link_count":4,"outbound_links_sha256":"8e2b9b11e94ba104c743a4d78e23b5e0f4f657c313eae09d5d6d71ad5cc3b042","ai_policy_mask":"1","publisher_declaration_fingerprint":null},"compatibility":{"refresh_recommended":true,"refresh_reason":["structured_data_changed"]},"classification_method":"deterministic_ruleset","classification_version":"change-v1"},{"previous_observation":{"id":12024355,"timestamp_used":"2026-09-06 22:55:09","timestamp_basis":"last_observed_at","first_observed_at":"2026-09-06 22:55:09","last_observed_at":"2026-09-06 22:55:09","observation_count":1},"current_observation":{"id":12767662,"timestamp_used":"2026-09-09 16:48:29","timestamp_basis":"last_observed_at","first_observed_at":"2026-09-09 16:48:29","last_observed_at":"2026-09-09 16:48:29","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://audiotuning.com/","final_url":"https://www.audiotuning.com/","canonical_url":"https://www.audiotuning.com/","http_status":200,"text_simhash":"2317144850459488668","text_simhash_hex":"202826F6F8C3719C","structured_data_sha256":"9ac6bd2638ef18e29838f8c5a521633f4f93bd3674f693b4d720c5d482638546","schema_type_mask":"151559","headers_sha256":"d64c70599b3800bbbddb60e83cd653d70b25e89608044344a56babef5e8cbdc9","word_count":263,"internal_link_count":76,"external_link_count":4,"outbound_links_sha256":"8e2b9b11e94ba104c743a4d78e23b5e0f4f657c313eae09d5d6d71ad5cc3b042","ai_policy_mask":"1","publisher_declaration_fingerprint":null},"after":{"requested_url":"https://audiotuning.com/","final_url":"https://www.audiotuning.com/","canonical_url":"https://www.audiotuning.com/","http_status":200,"text_simhash":"2317144850459488668","text_simhash_hex":"202826F6F8C3719C","structured_data_sha256":"9ac6bd2638ef18e29838f8c5a521633f4f93bd3674f693b4d720c5d482638546","schema_type_mask":"151559","headers_sha256":"e3a7967acd23224fcc83f78c539d54779b298e87808b77ee9efe90c483db1ea7","word_count":263,"internal_link_count":76,"external_link_count":4,"outbound_links_sha256":"8e2b9b11e94ba104c743a4d78e23b5e0f4f657c313eae09d5d6d71ad5cc3b042","ai_policy_mask":"1","publisher_declaration_fingerprint":null},"compatibility":{"refresh_recommended":false,"refresh_reason":[]},"classification_method":"deterministic_ruleset","classification_version":"change-v1"},{"previous_observation":{"id":8961983,"timestamp_used":"2026-08-26 12:51:16","timestamp_basis":"last_observed_at","first_observed_at":"2026-08-26 12:51:16","last_observed_at":"2026-08-26 12:51:16","observation_count":1},"current_observation":{"id":12024355,"timestamp_used":"2026-09-06 22:55:09","timestamp_basis":"last_observed_at","first_observed_at":"2026-09-06 22:55:09","last_observed_at":"2026-09-06 22:55:09","observation_count":1},"state":"changed","observation_gap":{"detected":false,"reason":null},"change":{"detected":true,"flags":{"text_changed":true,"structured_data_changed":true,"schema_type_mask_changed":false,"headers_changed":true,"word_count_changed":true,"internal_link_count_changed":true,"external_link_count_changed":false,"outbound_links_changed":false,"ai_policy_mask_changed":true,"canonical_url_changed":false,"final_url_changed":false,"http_status_changed":false,"publisher_declaration_changed":null},"magnitude":{"text_simhash_hamming_distance":12,"word_count_delta":-17,"internal_link_count_delta":3,"external_link_count_delta":0}},"before":{"requested_url":"https://audiotuning.com/","final_url":"https://www.audiotuning.com/","canonical_url":"https://www.audiotuning.com/","http_status":200,"text_simhash":"3461058878652008333","text_simhash_hex":"300826B670C3C78D","structured_data_sha256":"181f7d603bab6168ffe14f5488aeb75e54b27f4090f2ba43d33308accc73e84d","schema_type_mask":"151559","headers_sha256":"ad06180ead73f6e99c415549b7df13be2f7072a877d1ba37a2ee6abed18e7222","word_count":280,"internal_link_count":73,"external_link_count":4,"outbound_links_sha256":"8e2b9b11e94ba104c743a4d78e23b5e0f4f657c313eae09d5d6d71ad5cc3b042","ai_policy_mask":"5","publisher_declaration_fingerprint":null},"after":{"requested_url":"https://audiotuning.com/","final_url":"https://www.audiotuning.com/","canonical_url":"https://www.audiotuning.com/","http_status":200,"text_simhash":"2317144850459488668","text_simhash_hex":"202826F6F8C3719C","structured_data_sha256":"9ac6bd2638ef18e29838f8c5a521633f4f93bd3674f693b4d720c5d482638546","schema_type_mask":"151559","headers_sha256":"d64c70599b3800bbbddb60e83cd653d70b25e89608044344a56babef5e8cbdc9","word_count":263,"internal_link_count":76,"external_link_count":4,"outbound_links_sha256":"8e2b9b11e94ba104c743a4d78e23b5e0f4f657c313eae09d5d6d71ad5cc3b042","ai_policy_mask":"1","publisher_declaration_fingerprint":null},"compatibility":{"refresh_recommended":true,"refresh_reason":["text_changed","structured_data_changed","ai_policy_mask_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/audiotuning.com","state":"https://www.goguides.com/state/audiotuning.com","evaluate":"https://www.goguides.com/evaluate/audiotuning.com","history":"https://www.goguides.com/history/audiotuning.com"},"ts_utc":"2026-10-01T15:57:46Z"}