{"system":"GoGuides Change Intelligence","capability_id":"goguides.change_intelligence","api_version":"change-v1","scope":"domain_root_change_intelligence","domain":"miamibookfair.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://miamibookfair.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":"2026-09-13 00:12:42","last_loaded_at":"2026-09-19 09:25:05"},"current_observation":{"id":13636665,"timestamp_used":"2026-09-19 09:25:05","timestamp_basis":"last_observed_at","first_observed_at":"2026-09-19 09:25:05","last_observed_at":"2026-09-19 09:25:05","observation_count":1},"latest_change":{"previous_observation":{"id":12884758,"timestamp_used":"2026-09-13 00:12:42","timestamp_basis":"last_observed_at","first_observed_at":"2026-09-13 00:12:42","last_observed_at":"2026-09-13 00:12:42","observation_count":1},"current_observation":{"id":13636665,"timestamp_used":"2026-09-19 09:25:05","timestamp_basis":"last_observed_at","first_observed_at":"2026-09-19 09:25:05","last_observed_at":"2026-09-19 09:25:05","observation_count":1},"state":"changed","observation_gap":{"detected":false,"reason":null},"change":{"detected":true,"flags":{"text_changed":true,"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":true,"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":24,"word_count_delta":-4,"internal_link_count_delta":-18,"external_link_count_delta":-6}},"before":{"requested_url":"https://miamibookfair.com/","final_url":"https://miamibookfair.com/","canonical_url":"https://miamibookfair.com/","http_status":200,"text_simhash":"8006011365591157433","text_simhash_hex":"6F1B10EB59CD0AB9","structured_data_sha256":"0f93da4699e18942bfb0e890efa4cebb13dd4b78c22fb1ec02ddbe654c6485cf","schema_type_mask":"151558","headers_sha256":"18f5c14443618c9de81aee5e649d14aed5d50999ff622a0c49672ee9b7d30c8e","word_count":47,"internal_link_count":73,"external_link_count":19,"outbound_links_sha256":"b3701fd352419990986c89e6a83b7683272602070f7085b23bc5e06cb8b30119","ai_policy_mask":"1","publisher_declaration_fingerprint":null},"after":{"requested_url":"https://miamibookfair.com/","final_url":"https://miamibookfair.com/","canonical_url":"https://miamibookfair.com/","http_status":200,"text_simhash":"7132358868241849003","text_simhash_hex":"62FB3A9A10299AAB","structured_data_sha256":"0f93da4699e18942bfb0e890efa4cebb13dd4b78c22fb1ec02ddbe654c6485cf","schema_type_mask":"151558","headers_sha256":"349c9cf1740ebe5c52a6b6ef46e9598f915ed32ad057e049b6ca60d4fc7434cf","word_count":43,"internal_link_count":55,"external_link_count":13,"outbound_links_sha256":"8747ac4b08c42e3544962b071aff59e02b8f041da7230a16bb235f715e027f47","ai_policy_mask":"1","publisher_declaration_fingerprint":null},"compatibility":{"refresh_recommended":true,"refresh_reason":["text_changed","outbound_links_changed"]},"classification_method":"deterministic_ruleset","classification_version":"change-v1"},"events":[{"previous_observation":{"id":12884758,"timestamp_used":"2026-09-13 00:12:42","timestamp_basis":"last_observed_at","first_observed_at":"2026-09-13 00:12:42","last_observed_at":"2026-09-13 00:12:42","observation_count":1},"current_observation":{"id":13636665,"timestamp_used":"2026-09-19 09:25:05","timestamp_basis":"last_observed_at","first_observed_at":"2026-09-19 09:25:05","last_observed_at":"2026-09-19 09:25:05","observation_count":1},"state":"changed","observation_gap":{"detected":false,"reason":null},"change":{"detected":true,"flags":{"text_changed":true,"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":true,"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":24,"word_count_delta":-4,"internal_link_count_delta":-18,"external_link_count_delta":-6}},"before":{"requested_url":"https://miamibookfair.com/","final_url":"https://miamibookfair.com/","canonical_url":"https://miamibookfair.com/","http_status":200,"text_simhash":"8006011365591157433","text_simhash_hex":"6F1B10EB59CD0AB9","structured_data_sha256":"0f93da4699e18942bfb0e890efa4cebb13dd4b78c22fb1ec02ddbe654c6485cf","schema_type_mask":"151558","headers_sha256":"18f5c14443618c9de81aee5e649d14aed5d50999ff622a0c49672ee9b7d30c8e","word_count":47,"internal_link_count":73,"external_link_count":19,"outbound_links_sha256":"b3701fd352419990986c89e6a83b7683272602070f7085b23bc5e06cb8b30119","ai_policy_mask":"1","publisher_declaration_fingerprint":null},"after":{"requested_url":"https://miamibookfair.com/","final_url":"https://miamibookfair.com/","canonical_url":"https://miamibookfair.com/","http_status":200,"text_simhash":"7132358868241849003","text_simhash_hex":"62FB3A9A10299AAB","structured_data_sha256":"0f93da4699e18942bfb0e890efa4cebb13dd4b78c22fb1ec02ddbe654c6485cf","schema_type_mask":"151558","headers_sha256":"349c9cf1740ebe5c52a6b6ef46e9598f915ed32ad057e049b6ca60d4fc7434cf","word_count":43,"internal_link_count":55,"external_link_count":13,"outbound_links_sha256":"8747ac4b08c42e3544962b071aff59e02b8f041da7230a16bb235f715e027f47","ai_policy_mask":"1","publisher_declaration_fingerprint":null},"compatibility":{"refresh_recommended":true,"refresh_reason":["text_changed","outbound_links_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/miamibookfair.com","state":"https://www.goguides.com/state/miamibookfair.com","evaluate":"https://www.goguides.com/evaluate/miamibookfair.com","history":"https://www.goguides.com/history/miamibookfair.com"},"ts_utc":"2026-09-22T14:07:52Z"}