{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:SFLNZDTN5V2NCVCWFPB5AQN5JQ","short_pith_number":"pith:SFLNZDTN","canonical_record":{"source":{"id":"1703.10886","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2017-03-31T13:05:51Z","cross_cats_sorted":["cond-mat.mes-hall","physics.atom-ph"],"title_canon_sha256":"cebbbc600c941825573d93f14daf769c24b1b6f0c73fdf0dc888d03b19fac562","abstract_canon_sha256":"f30b2a45d8c2e52ade84e5b6c078cf2841471d9e700b4717077f77b2147fc266"},"schema_version":"1.0"},"canonical_sha256":"9156dc8e6ded74d154562bc3d041bd4c0b86930379807b5dfae02846dcbe0576","source":{"kind":"arxiv","id":"1703.10886","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1703.10886","created_at":"2026-05-18T00:40:30Z"},{"alias_kind":"arxiv_version","alias_value":"1703.10886v2","created_at":"2026-05-18T00:40:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1703.10886","created_at":"2026-05-18T00:40:30Z"},{"alias_kind":"pith_short_12","alias_value":"SFLNZDTN5V2N","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_16","alias_value":"SFLNZDTN5V2NCVCW","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_8","alias_value":"SFLNZDTN","created_at":"2026-05-18T12:31:43Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:SFLNZDTN5V2NCVCWFPB5AQN5JQ","target":"record","payload":{"canonical_record":{"source":{"id":"1703.10886","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2017-03-31T13:05:51Z","cross_cats_sorted":["cond-mat.mes-hall","physics.atom-ph"],"title_canon_sha256":"cebbbc600c941825573d93f14daf769c24b1b6f0c73fdf0dc888d03b19fac562","abstract_canon_sha256":"f30b2a45d8c2e52ade84e5b6c078cf2841471d9e700b4717077f77b2147fc266"},"schema_version":"1.0"},"canonical_sha256":"9156dc8e6ded74d154562bc3d041bd4c0b86930379807b5dfae02846dcbe0576","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:40:30.325687Z","signature_b64":"UkZxQ8+FxxkgZVbbBGNPu5pFDMtOdTQrh8AWrp+JxF8hDF0pc7Xau7cWgFPKZ24dPrlEFVgzI2BN/tQnWUk4Dg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9156dc8e6ded74d154562bc3d041bd4c0b86930379807b5dfae02846dcbe0576","last_reissued_at":"2026-05-18T00:40:30.325139Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:40:30.325139Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1703.10886","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:40:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IEeEbCeiV0LqedeQj7i9BRnztdUxtMCTAlw6Qg6rSL98eav0y9A0vBLSpPbboLOQ1cGUe9oXNJ+7lK3PKDv4Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T12:02:27.720051Z"},"content_sha256":"55252817d14088584f64ae4444145ba238d58870dbd80304447f6badc364cd6b","schema_version":"1.0","event_id":"sha256:55252817d14088584f64ae4444145ba238d58870dbd80304447f6badc364cd6b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:SFLNZDTN5V2NCVCWFPB5AQN5JQ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Topological semimetals with double-helix nodal link","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall","physics.atom-ph"],"primary_cat":"cond-mat.str-el","authors_text":"Hai-Zhou Lu, Jing-Min Hou, Wei Chen","submitted_at":"2017-03-31T13:05:51Z","abstract_excerpt":"Topological nodal line semimetals are characterized by the crossing of the conduction and valence bands along one or more closed loops in the Brillouin zone. Usually, these loops are either isolated or touch each other at some highly symmetric points. Here, we introduce a new kind of nodal line semimetal, that contains a pair of linked nodal loops. A concrete two-band model was constructed, which supports a pair of nodal lines with a double-helix structure, which can be further twisted into a Hopf link because of the periodicity of the Brillouin zone. The nodal lines are stabilized by the comb"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1703.10886","kind":"arxiv","version":2},"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":"2026-05-18T00:40:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3T3M6sYhUxBNQzHyllzU+ET6QkN2k8LGNTaKTJLQLtjwzUwTeEPKOeUrQKsEbG2PSU2pwhOmLmP8tgECwflfCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T12:02:27.720743Z"},"content_sha256":"d39d90c1ea9cec9c03b099cc5eebf589417c79a7c86c9e2b5818f016c0016b28","schema_version":"1.0","event_id":"sha256:d39d90c1ea9cec9c03b099cc5eebf589417c79a7c86c9e2b5818f016c0016b28"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SFLNZDTN5V2NCVCWFPB5AQN5JQ/bundle.json","state_url":"https://pith.science/pith/SFLNZDTN5V2NCVCWFPB5AQN5JQ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SFLNZDTN5V2NCVCWFPB5AQN5JQ/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":"2026-05-26T12:02:27Z","links":{"resolver":"https://pith.science/pith/SFLNZDTN5V2NCVCWFPB5AQN5JQ","bundle":"https://pith.science/pith/SFLNZDTN5V2NCVCWFPB5AQN5JQ/bundle.json","state":"https://pith.science/pith/SFLNZDTN5V2NCVCWFPB5AQN5JQ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SFLNZDTN5V2NCVCWFPB5AQN5JQ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:SFLNZDTN5V2NCVCWFPB5AQN5JQ","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":"f30b2a45d8c2e52ade84e5b6c078cf2841471d9e700b4717077f77b2147fc266","cross_cats_sorted":["cond-mat.mes-hall","physics.atom-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2017-03-31T13:05:51Z","title_canon_sha256":"cebbbc600c941825573d93f14daf769c24b1b6f0c73fdf0dc888d03b19fac562"},"schema_version":"1.0","source":{"id":"1703.10886","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1703.10886","created_at":"2026-05-18T00:40:30Z"},{"alias_kind":"arxiv_version","alias_value":"1703.10886v2","created_at":"2026-05-18T00:40:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1703.10886","created_at":"2026-05-18T00:40:30Z"},{"alias_kind":"pith_short_12","alias_value":"SFLNZDTN5V2N","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_16","alias_value":"SFLNZDTN5V2NCVCW","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_8","alias_value":"SFLNZDTN","created_at":"2026-05-18T12:31:43Z"}],"graph_snapshots":[{"event_id":"sha256:d39d90c1ea9cec9c03b099cc5eebf589417c79a7c86c9e2b5818f016c0016b28","target":"graph","created_at":"2026-05-18T00:40:30Z","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":"Topological nodal line semimetals are characterized by the crossing of the conduction and valence bands along one or more closed loops in the Brillouin zone. Usually, these loops are either isolated or touch each other at some highly symmetric points. Here, we introduce a new kind of nodal line semimetal, that contains a pair of linked nodal loops. A concrete two-band model was constructed, which supports a pair of nodal lines with a double-helix structure, which can be further twisted into a Hopf link because of the periodicity of the Brillouin zone. The nodal lines are stabilized by the comb","authors_text":"Hai-Zhou Lu, Jing-Min Hou, Wei Chen","cross_cats":["cond-mat.mes-hall","physics.atom-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2017-03-31T13:05:51Z","title":"Topological semimetals with double-helix nodal link"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1703.10886","kind":"arxiv","version":2},"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":"sha256:55252817d14088584f64ae4444145ba238d58870dbd80304447f6badc364cd6b","target":"record","created_at":"2026-05-18T00:40:30Z","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":"f30b2a45d8c2e52ade84e5b6c078cf2841471d9e700b4717077f77b2147fc266","cross_cats_sorted":["cond-mat.mes-hall","physics.atom-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2017-03-31T13:05:51Z","title_canon_sha256":"cebbbc600c941825573d93f14daf769c24b1b6f0c73fdf0dc888d03b19fac562"},"schema_version":"1.0","source":{"id":"1703.10886","kind":"arxiv","version":2}},"canonical_sha256":"9156dc8e6ded74d154562bc3d041bd4c0b86930379807b5dfae02846dcbe0576","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9156dc8e6ded74d154562bc3d041bd4c0b86930379807b5dfae02846dcbe0576","first_computed_at":"2026-05-18T00:40:30.325139Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:40:30.325139Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"UkZxQ8+FxxkgZVbbBGNPu5pFDMtOdTQrh8AWrp+JxF8hDF0pc7Xau7cWgFPKZ24dPrlEFVgzI2BN/tQnWUk4Dg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:40:30.325687Z","signed_message":"canonical_sha256_bytes"},"source_id":"1703.10886","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:55252817d14088584f64ae4444145ba238d58870dbd80304447f6badc364cd6b","sha256:d39d90c1ea9cec9c03b099cc5eebf589417c79a7c86c9e2b5818f016c0016b28"],"state_sha256":"eb162d772b95ed6b8475f3f155356996cc5e0723f7757d627756b7089116883f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TLbTjE29waGdLCQdKzCVQpd92/mJ2hbd6JOMh5onhhtKcc5oijJj7EzPlxkVoZwGVC8M/PW4ukVy6DQ/0Dm1Aw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T12:02:27.723565Z","bundle_sha256":"ba75122129405180ebb1e67739cd9e5d9387f88f20cb7861534079d7504da406"}}