{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:2MXYGZHDM3DL4W6JJBBJ227FAK","short_pith_number":"pith:2MXYGZHD","canonical_record":{"source":{"id":"2106.00644","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nlin.AO","submitted_at":"2021-06-01T17:24:34Z","cross_cats_sorted":["cs.SY","eess.SY"],"title_canon_sha256":"81a1535e09ef4f1b7af7cd940617b44a57ee616f274b29f8eb22df0a49a9eb79","abstract_canon_sha256":"550af1681809ac395b749d05e85a34442d446d8ab4b96e9e9025da0f065836a6"},"schema_version":"1.0"},"canonical_sha256":"d32f8364e366c6be5bc948429d6be502bb3fc1282db74f27820bf524cc165278","source":{"kind":"arxiv","id":"2106.00644","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2106.00644","created_at":"2026-07-05T03:48:06Z"},{"alias_kind":"arxiv_version","alias_value":"2106.00644v3","created_at":"2026-07-05T03:48:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2106.00644","created_at":"2026-07-05T03:48:06Z"},{"alias_kind":"pith_short_12","alias_value":"2MXYGZHDM3DL","created_at":"2026-07-05T03:48:06Z"},{"alias_kind":"pith_short_16","alias_value":"2MXYGZHDM3DL4W6J","created_at":"2026-07-05T03:48:06Z"},{"alias_kind":"pith_short_8","alias_value":"2MXYGZHD","created_at":"2026-07-05T03:48:06Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:2MXYGZHDM3DL4W6JJBBJ227FAK","target":"record","payload":{"canonical_record":{"source":{"id":"2106.00644","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nlin.AO","submitted_at":"2021-06-01T17:24:34Z","cross_cats_sorted":["cs.SY","eess.SY"],"title_canon_sha256":"81a1535e09ef4f1b7af7cd940617b44a57ee616f274b29f8eb22df0a49a9eb79","abstract_canon_sha256":"550af1681809ac395b749d05e85a34442d446d8ab4b96e9e9025da0f065836a6"},"schema_version":"1.0"},"canonical_sha256":"d32f8364e366c6be5bc948429d6be502bb3fc1282db74f27820bf524cc165278","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:48:06.322897Z","signature_b64":"N79KYQoP5McEIYktlv8vCdWL/40UlmzMWqUB8a8zbwlDC6z9FuPyX0PmN83Gs574Dr+vG8fT6jB8toakgx16CQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d32f8364e366c6be5bc948429d6be502bb3fc1282db74f27820bf524cc165278","last_reissued_at":"2026-07-05T03:48:06.322420Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:48:06.322420Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2106.00644","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T03:48:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WBHizd/M9e0Ac/FkfMAR8Oo1VRAEzVnYLQLp1CYcpmCADqIxkXULcjjgEDkZ7f0Radz9bY8d29ZGgDObZ4hqAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T08:08:42.800854Z"},"content_sha256":"e1056e199fd67ed73e04b2de7b69dbee742cf6408d5adef65ec56db9ecd15e4f","schema_version":"1.0","event_id":"sha256:e1056e199fd67ed73e04b2de7b69dbee742cf6408d5adef65ec56db9ecd15e4f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:2MXYGZHDM3DL4W6JJBBJ227FAK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A normal form for grid forming power grid actors","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.SY","eess.SY"],"primary_cat":"nlin.AO","authors_text":"Anton Plietzsch, Frank Hellmann, Paul Schultz, Raphael Kogler","submitted_at":"2021-06-01T17:24:34Z","abstract_excerpt":"Future power grids will be operating a large number of heterogeneous dynamical actors. Many of these will contribute to the fundamental dynamical stability of the system. By taking a complexity theoretic perspective we derive a normal form for grid forming components in power grids. This allows analyzing the grids systemic properties without the need for detailed technical models. Our approach is based on the physics of the power flow in the grid on the one hand, and on the common symmetry that is inherited from the control objectives grid-forming power grid components are trying to achieve. W"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2106.00644","kind":"arxiv","version":3},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2106.00644/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T03:48:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RpLI5jSg4/ArotxPE8zAnvR90bAXC26Z8ckh72O36aWy8D2KIUaS9khUvIUx3NZwwCrYhyunipzxPNvSUq2MAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T08:08:42.801245Z"},"content_sha256":"27b96c76eb7c3e4eeb2a9d092ec55dc1dce3c285432841c1b5673377a93e418e","schema_version":"1.0","event_id":"sha256:27b96c76eb7c3e4eeb2a9d092ec55dc1dce3c285432841c1b5673377a93e418e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2MXYGZHDM3DL4W6JJBBJ227FAK/bundle.json","state_url":"https://pith.science/pith/2MXYGZHDM3DL4W6JJBBJ227FAK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2MXYGZHDM3DL4W6JJBBJ227FAK/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":"2026-07-07T08:08:42Z","links":{"resolver":"https://pith.science/pith/2MXYGZHDM3DL4W6JJBBJ227FAK","bundle":"https://pith.science/pith/2MXYGZHDM3DL4W6JJBBJ227FAK/bundle.json","state":"https://pith.science/pith/2MXYGZHDM3DL4W6JJBBJ227FAK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2MXYGZHDM3DL4W6JJBBJ227FAK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:2MXYGZHDM3DL4W6JJBBJ227FAK","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":"550af1681809ac395b749d05e85a34442d446d8ab4b96e9e9025da0f065836a6","cross_cats_sorted":["cs.SY","eess.SY"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nlin.AO","submitted_at":"2021-06-01T17:24:34Z","title_canon_sha256":"81a1535e09ef4f1b7af7cd940617b44a57ee616f274b29f8eb22df0a49a9eb79"},"schema_version":"1.0","source":{"id":"2106.00644","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2106.00644","created_at":"2026-07-05T03:48:06Z"},{"alias_kind":"arxiv_version","alias_value":"2106.00644v3","created_at":"2026-07-05T03:48:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2106.00644","created_at":"2026-07-05T03:48:06Z"},{"alias_kind":"pith_short_12","alias_value":"2MXYGZHDM3DL","created_at":"2026-07-05T03:48:06Z"},{"alias_kind":"pith_short_16","alias_value":"2MXYGZHDM3DL4W6J","created_at":"2026-07-05T03:48:06Z"},{"alias_kind":"pith_short_8","alias_value":"2MXYGZHD","created_at":"2026-07-05T03:48:06Z"}],"graph_snapshots":[{"event_id":"sha256:27b96c76eb7c3e4eeb2a9d092ec55dc1dce3c285432841c1b5673377a93e418e","target":"graph","created_at":"2026-07-05T03:48:06Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2106.00644/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Future power grids will be operating a large number of heterogeneous dynamical actors. Many of these will contribute to the fundamental dynamical stability of the system. By taking a complexity theoretic perspective we derive a normal form for grid forming components in power grids. This allows analyzing the grids systemic properties without the need for detailed technical models. Our approach is based on the physics of the power flow in the grid on the one hand, and on the common symmetry that is inherited from the control objectives grid-forming power grid components are trying to achieve. W","authors_text":"Anton Plietzsch, Frank Hellmann, Paul Schultz, Raphael Kogler","cross_cats":["cs.SY","eess.SY"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nlin.AO","submitted_at":"2021-06-01T17:24:34Z","title":"A normal form for grid forming power grid actors"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2106.00644","kind":"arxiv","version":3},"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:e1056e199fd67ed73e04b2de7b69dbee742cf6408d5adef65ec56db9ecd15e4f","target":"record","created_at":"2026-07-05T03:48:06Z","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":"550af1681809ac395b749d05e85a34442d446d8ab4b96e9e9025da0f065836a6","cross_cats_sorted":["cs.SY","eess.SY"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nlin.AO","submitted_at":"2021-06-01T17:24:34Z","title_canon_sha256":"81a1535e09ef4f1b7af7cd940617b44a57ee616f274b29f8eb22df0a49a9eb79"},"schema_version":"1.0","source":{"id":"2106.00644","kind":"arxiv","version":3}},"canonical_sha256":"d32f8364e366c6be5bc948429d6be502bb3fc1282db74f27820bf524cc165278","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d32f8364e366c6be5bc948429d6be502bb3fc1282db74f27820bf524cc165278","first_computed_at":"2026-07-05T03:48:06.322420Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:48:06.322420Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"N79KYQoP5McEIYktlv8vCdWL/40UlmzMWqUB8a8zbwlDC6z9FuPyX0PmN83Gs574Dr+vG8fT6jB8toakgx16CQ==","signature_status":"signed_v1","signed_at":"2026-07-05T03:48:06.322897Z","signed_message":"canonical_sha256_bytes"},"source_id":"2106.00644","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e1056e199fd67ed73e04b2de7b69dbee742cf6408d5adef65ec56db9ecd15e4f","sha256:27b96c76eb7c3e4eeb2a9d092ec55dc1dce3c285432841c1b5673377a93e418e"],"state_sha256":"f3d0d6eb0ca21f4a508953fc92e495d74dadca9e0689b2123ca9521671eaf24a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"s59dSXpB765/qbFAMIRIr8ETLLvC3kFaJJrdS6bpipRPscDdxbuPEMmGd0ACRhuekso3NvYoSG3vDz7v6XSlDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T08:08:42.803430Z","bundle_sha256":"778772d69ae18e0f0299a07c2c36e23b2c3e7f5aa4e45d686554ac1f47e2a5fb"}}