{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:RQRSZFBOIAD7LJR4YZPUS5X2H4","short_pith_number":"pith:RQRSZFBO","canonical_record":{"source":{"id":"1904.06760","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CG","submitted_at":"2019-04-14T21:13:48Z","cross_cats_sorted":[],"title_canon_sha256":"b1f61bcd979f7016bb46095cd0079d30e7fe2b9d071cefcb295ee721468ac0f7","abstract_canon_sha256":"26f5b61cd57810f8153a11e8976d3a050f2c91e7803311ce1fe1326d76b9234e"},"schema_version":"1.0"},"canonical_sha256":"8c232c942e4007f5a63cc65f4976fa3f25efe84b9ac71f6942aec3963620f9e7","source":{"kind":"arxiv","id":"1904.06760","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1904.06760","created_at":"2026-05-17T23:48:36Z"},{"alias_kind":"arxiv_version","alias_value":"1904.06760v1","created_at":"2026-05-17T23:48:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1904.06760","created_at":"2026-05-17T23:48:36Z"},{"alias_kind":"pith_short_12","alias_value":"RQRSZFBOIAD7","created_at":"2026-05-18T12:33:27Z"},{"alias_kind":"pith_short_16","alias_value":"RQRSZFBOIAD7LJR4","created_at":"2026-05-18T12:33:27Z"},{"alias_kind":"pith_short_8","alias_value":"RQRSZFBO","created_at":"2026-05-18T12:33:27Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:RQRSZFBOIAD7LJR4YZPUS5X2H4","target":"record","payload":{"canonical_record":{"source":{"id":"1904.06760","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CG","submitted_at":"2019-04-14T21:13:48Z","cross_cats_sorted":[],"title_canon_sha256":"b1f61bcd979f7016bb46095cd0079d30e7fe2b9d071cefcb295ee721468ac0f7","abstract_canon_sha256":"26f5b61cd57810f8153a11e8976d3a050f2c91e7803311ce1fe1326d76b9234e"},"schema_version":"1.0"},"canonical_sha256":"8c232c942e4007f5a63cc65f4976fa3f25efe84b9ac71f6942aec3963620f9e7","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:48:36.297331Z","signature_b64":"d1ZtZDGtY4bjukpNkwa4n0tDdnyE0dzvjOK2gY4+u+k53H9hzclIJYHCWXtNlfWhYezoa02LVeyBrx8hLX4QBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8c232c942e4007f5a63cc65f4976fa3f25efe84b9ac71f6942aec3963620f9e7","last_reissued_at":"2026-05-17T23:48:36.296713Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:48:36.296713Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1904.06760","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":"2026-05-17T23:48:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"B/siGdNqfSX1R3szNYMhczjKhSIAY0ryuSw6QS44UTE69HbCDzU3JAknEoRbQCHpZy7RTt2zxFVb0YwvKnaJAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T23:00:08.918700Z"},"content_sha256":"aaec0598b680700c011f045c900eacf49101c9964f7d8fc269d403b7ca141736","schema_version":"1.0","event_id":"sha256:aaec0598b680700c011f045c900eacf49101c9964f7d8fc269d403b7ca141736"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:RQRSZFBOIAD7LJR4YZPUS5X2H4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Drawing HV-Restricted Planar Graphs","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CG","authors_text":"Debajyoti Mondal, Saeed Mehrabi, Stefan Felsner, Stephane Durocher","submitted_at":"2019-04-14T21:13:48Z","abstract_excerpt":"A strict orthogonal drawing of a graph $G=(V, E)$ in $\\mathbb{R}^2$ is a drawing of $G$ such that each vertex is mapped to a distinct point and each edge is mapped to a horizontal or vertical line segment. A graph $G$ is $HV$-restricted if each of its edges is assigned a horizontal or vertical orientation. A strict orthogonal drawing of an $HV$-restricted graph $G$ is good if it is planar and respects the edge orientations of $G$. In this paper, we give a polynomial-time algorithm to check whether a given $HV$-restricted plane graph (i.e., a planar graph with a fixed combinatorial embedding) a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1904.06760","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":"2026-05-17T23:48:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yOL8ZeCnznV7Mt+lfwfxmPl+8okt5LZmXJ+v0a5jyg2RwOnt1lrgH1VU8bcZMK6fbo7vkIaeP+hpkeufQhxoBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T23:00:08.919042Z"},"content_sha256":"a8c7f78c8bdcac1d88262cc1b1efd19c0f58905c587a502f16cf8d8f77101464","schema_version":"1.0","event_id":"sha256:a8c7f78c8bdcac1d88262cc1b1efd19c0f58905c587a502f16cf8d8f77101464"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/RQRSZFBOIAD7LJR4YZPUS5X2H4/bundle.json","state_url":"https://pith.science/pith/RQRSZFBOIAD7LJR4YZPUS5X2H4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/RQRSZFBOIAD7LJR4YZPUS5X2H4/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":"2026-06-01T23:00:08Z","links":{"resolver":"https://pith.science/pith/RQRSZFBOIAD7LJR4YZPUS5X2H4","bundle":"https://pith.science/pith/RQRSZFBOIAD7LJR4YZPUS5X2H4/bundle.json","state":"https://pith.science/pith/RQRSZFBOIAD7LJR4YZPUS5X2H4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/RQRSZFBOIAD7LJR4YZPUS5X2H4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:RQRSZFBOIAD7LJR4YZPUS5X2H4","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":"26f5b61cd57810f8153a11e8976d3a050f2c91e7803311ce1fe1326d76b9234e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CG","submitted_at":"2019-04-14T21:13:48Z","title_canon_sha256":"b1f61bcd979f7016bb46095cd0079d30e7fe2b9d071cefcb295ee721468ac0f7"},"schema_version":"1.0","source":{"id":"1904.06760","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1904.06760","created_at":"2026-05-17T23:48:36Z"},{"alias_kind":"arxiv_version","alias_value":"1904.06760v1","created_at":"2026-05-17T23:48:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1904.06760","created_at":"2026-05-17T23:48:36Z"},{"alias_kind":"pith_short_12","alias_value":"RQRSZFBOIAD7","created_at":"2026-05-18T12:33:27Z"},{"alias_kind":"pith_short_16","alias_value":"RQRSZFBOIAD7LJR4","created_at":"2026-05-18T12:33:27Z"},{"alias_kind":"pith_short_8","alias_value":"RQRSZFBO","created_at":"2026-05-18T12:33:27Z"}],"graph_snapshots":[{"event_id":"sha256:a8c7f78c8bdcac1d88262cc1b1efd19c0f58905c587a502f16cf8d8f77101464","target":"graph","created_at":"2026-05-17T23:48:36Z","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":"A strict orthogonal drawing of a graph $G=(V, E)$ in $\\mathbb{R}^2$ is a drawing of $G$ such that each vertex is mapped to a distinct point and each edge is mapped to a horizontal or vertical line segment. A graph $G$ is $HV$-restricted if each of its edges is assigned a horizontal or vertical orientation. A strict orthogonal drawing of an $HV$-restricted graph $G$ is good if it is planar and respects the edge orientations of $G$. In this paper, we give a polynomial-time algorithm to check whether a given $HV$-restricted plane graph (i.e., a planar graph with a fixed combinatorial embedding) a","authors_text":"Debajyoti Mondal, Saeed Mehrabi, Stefan Felsner, Stephane Durocher","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CG","submitted_at":"2019-04-14T21:13:48Z","title":"Drawing HV-Restricted Planar Graphs"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1904.06760","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:aaec0598b680700c011f045c900eacf49101c9964f7d8fc269d403b7ca141736","target":"record","created_at":"2026-05-17T23:48:36Z","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":"26f5b61cd57810f8153a11e8976d3a050f2c91e7803311ce1fe1326d76b9234e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CG","submitted_at":"2019-04-14T21:13:48Z","title_canon_sha256":"b1f61bcd979f7016bb46095cd0079d30e7fe2b9d071cefcb295ee721468ac0f7"},"schema_version":"1.0","source":{"id":"1904.06760","kind":"arxiv","version":1}},"canonical_sha256":"8c232c942e4007f5a63cc65f4976fa3f25efe84b9ac71f6942aec3963620f9e7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8c232c942e4007f5a63cc65f4976fa3f25efe84b9ac71f6942aec3963620f9e7","first_computed_at":"2026-05-17T23:48:36.296713Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:48:36.296713Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"d1ZtZDGtY4bjukpNkwa4n0tDdnyE0dzvjOK2gY4+u+k53H9hzclIJYHCWXtNlfWhYezoa02LVeyBrx8hLX4QBw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:48:36.297331Z","signed_message":"canonical_sha256_bytes"},"source_id":"1904.06760","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:aaec0598b680700c011f045c900eacf49101c9964f7d8fc269d403b7ca141736","sha256:a8c7f78c8bdcac1d88262cc1b1efd19c0f58905c587a502f16cf8d8f77101464"],"state_sha256":"6b4f7bf8bd1fa21880e727105cdf89b62d4e89efc147d2ad274c9c46d2785579"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AvBwEmQNZQX1zkkH4dcww6uQDgbYEvnESV/T8QU7elcMfeIhywpnn5DwrtmdNyEbdcYzibUgESkpVHQAc4E+BA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T23:00:08.921073Z","bundle_sha256":"d63e863baef8e0e5b19412c92b0d2c222236c9756c63a8f6228731654ccf1eee"}}