{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:VFNABQ4F5MK2PZPJTQ3T2C2SVI","short_pith_number":"pith:VFNABQ4F","canonical_record":{"source":{"id":"1907.03138","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"eess.SY","submitted_at":"2019-07-06T15:35:19Z","cross_cats_sorted":["cs.SY"],"title_canon_sha256":"c28821d487eff9093aedaa531381390460c7320a74586b4d66b77c9520ded515","abstract_canon_sha256":"15ec3769c57d8dba8e2df1b90a86a016b9d4b2ed0cdf97ad8cbb06428a4d0dea"},"schema_version":"1.0"},"canonical_sha256":"a95a00c385eb15a7e5e99c373d0b52aa3c4ba6865ffa819cdedc4be3f6538e12","source":{"kind":"arxiv","id":"1907.03138","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1907.03138","created_at":"2026-05-17T23:41:18Z"},{"alias_kind":"arxiv_version","alias_value":"1907.03138v1","created_at":"2026-05-17T23:41:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.03138","created_at":"2026-05-17T23:41:18Z"},{"alias_kind":"pith_short_12","alias_value":"VFNABQ4F5MK2","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_16","alias_value":"VFNABQ4F5MK2PZPJ","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_8","alias_value":"VFNABQ4F","created_at":"2026-05-18T12:33:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:VFNABQ4F5MK2PZPJTQ3T2C2SVI","target":"record","payload":{"canonical_record":{"source":{"id":"1907.03138","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"eess.SY","submitted_at":"2019-07-06T15:35:19Z","cross_cats_sorted":["cs.SY"],"title_canon_sha256":"c28821d487eff9093aedaa531381390460c7320a74586b4d66b77c9520ded515","abstract_canon_sha256":"15ec3769c57d8dba8e2df1b90a86a016b9d4b2ed0cdf97ad8cbb06428a4d0dea"},"schema_version":"1.0"},"canonical_sha256":"a95a00c385eb15a7e5e99c373d0b52aa3c4ba6865ffa819cdedc4be3f6538e12","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:41:18.834157Z","signature_b64":"mGjtymaeIQcuciMiZ1HqYeg0pPYFNaO7j4zqd3KVnADGvbGwudsFSxWWYNA8RIexmRdSR/BGr0KtODiE5HD0Cw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a95a00c385eb15a7e5e99c373d0b52aa3c4ba6865ffa819cdedc4be3f6538e12","last_reissued_at":"2026-05-17T23:41:18.833643Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:41:18.833643Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1907.03138","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:41:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xajY8QQlmqlV4dONWd3EewcAlNjtxldVu6EC+OfTriRkzhdHw/OcGNgGTtjI7G8hDuINiCMf7GDm8ju3wCmhBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T18:16:48.849778Z"},"content_sha256":"ede2f3e2f42a1ca2705b93981e2ac64dc8e3f45f889f6aea631ec514808d737b","schema_version":"1.0","event_id":"sha256:ede2f3e2f42a1ca2705b93981e2ac64dc8e3f45f889f6aea631ec514808d737b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:VFNABQ4F5MK2PZPJTQ3T2C2SVI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Decentralized Dynamic State Estimation in Microgrids","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","headline":"","cross_cats":["cs.SY"],"primary_cat":"eess.SY","authors_text":"Bang L. H. Nguyen, Tuan A. Ngo, Tuyen V. Vu","submitted_at":"2019-07-06T15:35:19Z","abstract_excerpt":"This paper proposes a decentralized dynamic state estimation scheme for microgrids. The approach employs the voltage and current measurements in the dq0 reference frame through phasor synchronization to be able to exclude orthogonal functions from their relationship formulas. Based on that premise, we utilize a Kalman filter to dynamically estimate states of microgrids. The decoupling of measurement values to state and input vectors reduces the computational complexity. The Kalman filter considers the process noise covariances, which are modified with respect to the covariance of measured inpu"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.03138","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:41:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NqQnmY/JO5g3/43uPf8ENnp3s6T1OK0fBc8BwRSrKJaQs8g+FtOATawbaxIpbzg6prpO87HuLpCduoyukI41DQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T18:16:48.850514Z"},"content_sha256":"4bb7b9a95174792f76d367d0c67789dbe8b742f9db20a3c8c4278c4a136d648f","schema_version":"1.0","event_id":"sha256:4bb7b9a95174792f76d367d0c67789dbe8b742f9db20a3c8c4278c4a136d648f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VFNABQ4F5MK2PZPJTQ3T2C2SVI/bundle.json","state_url":"https://pith.science/pith/VFNABQ4F5MK2PZPJTQ3T2C2SVI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VFNABQ4F5MK2PZPJTQ3T2C2SVI/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-25T18:16:48Z","links":{"resolver":"https://pith.science/pith/VFNABQ4F5MK2PZPJTQ3T2C2SVI","bundle":"https://pith.science/pith/VFNABQ4F5MK2PZPJTQ3T2C2SVI/bundle.json","state":"https://pith.science/pith/VFNABQ4F5MK2PZPJTQ3T2C2SVI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VFNABQ4F5MK2PZPJTQ3T2C2SVI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:VFNABQ4F5MK2PZPJTQ3T2C2SVI","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"15ec3769c57d8dba8e2df1b90a86a016b9d4b2ed0cdf97ad8cbb06428a4d0dea","cross_cats_sorted":["cs.SY"],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"eess.SY","submitted_at":"2019-07-06T15:35:19Z","title_canon_sha256":"c28821d487eff9093aedaa531381390460c7320a74586b4d66b77c9520ded515"},"schema_version":"1.0","source":{"id":"1907.03138","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1907.03138","created_at":"2026-05-17T23:41:18Z"},{"alias_kind":"arxiv_version","alias_value":"1907.03138v1","created_at":"2026-05-17T23:41:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.03138","created_at":"2026-05-17T23:41:18Z"},{"alias_kind":"pith_short_12","alias_value":"VFNABQ4F5MK2","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_16","alias_value":"VFNABQ4F5MK2PZPJ","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_8","alias_value":"VFNABQ4F","created_at":"2026-05-18T12:33:30Z"}],"graph_snapshots":[{"event_id":"sha256:4bb7b9a95174792f76d367d0c67789dbe8b742f9db20a3c8c4278c4a136d648f","target":"graph","created_at":"2026-05-17T23:41:18Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"This paper proposes a decentralized dynamic state estimation scheme for microgrids. The approach employs the voltage and current measurements in the dq0 reference frame through phasor synchronization to be able to exclude orthogonal functions from their relationship formulas. Based on that premise, we utilize a Kalman filter to dynamically estimate states of microgrids. The decoupling of measurement values to state and input vectors reduces the computational complexity. The Kalman filter considers the process noise covariances, which are modified with respect to the covariance of measured inpu","authors_text":"Bang L. H. Nguyen, Tuan A. Ngo, Tuyen V. Vu","cross_cats":["cs.SY"],"headline":"","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"eess.SY","submitted_at":"2019-07-06T15:35:19Z","title":"Decentralized Dynamic State Estimation in Microgrids"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.03138","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:ede2f3e2f42a1ca2705b93981e2ac64dc8e3f45f889f6aea631ec514808d737b","target":"record","created_at":"2026-05-17T23:41:18Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"15ec3769c57d8dba8e2df1b90a86a016b9d4b2ed0cdf97ad8cbb06428a4d0dea","cross_cats_sorted":["cs.SY"],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"eess.SY","submitted_at":"2019-07-06T15:35:19Z","title_canon_sha256":"c28821d487eff9093aedaa531381390460c7320a74586b4d66b77c9520ded515"},"schema_version":"1.0","source":{"id":"1907.03138","kind":"arxiv","version":1}},"canonical_sha256":"a95a00c385eb15a7e5e99c373d0b52aa3c4ba6865ffa819cdedc4be3f6538e12","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a95a00c385eb15a7e5e99c373d0b52aa3c4ba6865ffa819cdedc4be3f6538e12","first_computed_at":"2026-05-17T23:41:18.833643Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:41:18.833643Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"mGjtymaeIQcuciMiZ1HqYeg0pPYFNaO7j4zqd3KVnADGvbGwudsFSxWWYNA8RIexmRdSR/BGr0KtODiE5HD0Cw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:41:18.834157Z","signed_message":"canonical_sha256_bytes"},"source_id":"1907.03138","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ede2f3e2f42a1ca2705b93981e2ac64dc8e3f45f889f6aea631ec514808d737b","sha256:4bb7b9a95174792f76d367d0c67789dbe8b742f9db20a3c8c4278c4a136d648f"],"state_sha256":"341b23963473c8ca912ebd2ff6f3426167275906a2cd0cc04b2d83cd87ff12a4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+P//yd73zJzKnjkJjTNrLX64oIawRpNrTDA2+qOrSruvPMA9u+PWzgOy2yIAm/33ptGq5hrG5rUY4rozlOjpCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T18:16:48.854566Z","bundle_sha256":"2b7c54809e3161b22440cbd8b158d27d001e81e462ed18b24ec9adcb5d64a2b9"}}