{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:QCEHIWXZNRSB3EWRSPPCWQ6TJX","short_pith_number":"pith:QCEHIWXZ","canonical_record":{"source":{"id":"1310.0391","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2013-10-01T16:53:39Z","cross_cats_sorted":["cond-mat.mes-hall","cond-mat.other"],"title_canon_sha256":"fad68d5315dd820b0814302d24ad84c7380deadae8403c9ce6b037860109a890","abstract_canon_sha256":"816615cf588454caef20061d71755fbad073a09e843e725bb322f7b571f0de59"},"schema_version":"1.0"},"canonical_sha256":"8088745af96c641d92d193de2b43d34dfe8d20676c47dbcd4c223f927eb07f12","source":{"kind":"arxiv","id":"1310.0391","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1310.0391","created_at":"2026-05-18T02:57:08Z"},{"alias_kind":"arxiv_version","alias_value":"1310.0391v1","created_at":"2026-05-18T02:57:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1310.0391","created_at":"2026-05-18T02:57:08Z"},{"alias_kind":"pith_short_12","alias_value":"QCEHIWXZNRSB","created_at":"2026-05-18T12:27:57Z"},{"alias_kind":"pith_short_16","alias_value":"QCEHIWXZNRSB3EWR","created_at":"2026-05-18T12:27:57Z"},{"alias_kind":"pith_short_8","alias_value":"QCEHIWXZ","created_at":"2026-05-18T12:27:57Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:QCEHIWXZNRSB3EWRSPPCWQ6TJX","target":"record","payload":{"canonical_record":{"source":{"id":"1310.0391","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2013-10-01T16:53:39Z","cross_cats_sorted":["cond-mat.mes-hall","cond-mat.other"],"title_canon_sha256":"fad68d5315dd820b0814302d24ad84c7380deadae8403c9ce6b037860109a890","abstract_canon_sha256":"816615cf588454caef20061d71755fbad073a09e843e725bb322f7b571f0de59"},"schema_version":"1.0"},"canonical_sha256":"8088745af96c641d92d193de2b43d34dfe8d20676c47dbcd4c223f927eb07f12","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:57:08.451249Z","signature_b64":"MzugZarc29oZQpEAkXops9tDNQ2h8wBIJm6wEVwKEy7v3hhFo2+kDmBQcnTokVzucMe91dEFbmVtyZqHKVFdAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8088745af96c641d92d193de2b43d34dfe8d20676c47dbcd4c223f927eb07f12","last_reissued_at":"2026-05-18T02:57:08.450697Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:57:08.450697Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1310.0391","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":"2026-05-18T02:57:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YBvWKby7SjOczebX93Rfu+YNF5ijVgFWoeMiJICut0wB6mGkaeqgyO7YI6Az3dVTo+Pich16/A8IyMRXjqMuDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T08:12:58.437097Z"},"content_sha256":"aa19d9561bcdb58cc5e2d2e14d43ffc3aaeaa952e10cc2d929bc39dfa6feb2f7","schema_version":"1.0","event_id":"sha256:aa19d9561bcdb58cc5e2d2e14d43ffc3aaeaa952e10cc2d929bc39dfa6feb2f7"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:QCEHIWXZNRSB3EWRSPPCWQ6TJX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Discovery of a Three-dimensional Topological Dirac Semimetal, Na3Bi","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall","cond-mat.other"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"B. Zhou, D. Prabhakaran, H. M. Weng, S. -K. Mo, X. Dai, Y. L. Chen, Y. Zhang, Z. Fang, Z. Hussain, Z. J. Wang, Z. K. Liu, Z. X. Shen","submitted_at":"2013-10-01T16:53:39Z","abstract_excerpt":"Three-dimensional (3D) topological Dirac semimetals (TDSs) represent a novel state of quantum matter that can be viewed as '3D graphene'. In contrast to two-dimensional (2D) Dirac fermions in graphene or on the surface of 3D topological insulators, TDSs possess 3D Dirac fermions in the bulk. The TDS is also an important boundary state mediating numerous novel quantum states, such as topological insulators, Weyl semi-metals, Axion insulators and topological superconductors. By investigating the electronic structure of Na3Bi with angle resolved photoemission spectroscopy, we discovered 3D Dirac "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1310.0391","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":"2026-05-18T02:57:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Nvoq0Iuoo0V0SSUtfsqZGExLYTqX5NNw3W0Wfn9WGvml1tZPBy47sHs3NcxR6u67cOwtTUgaS35Oc0B7LHOzCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T08:12:58.437461Z"},"content_sha256":"d1e83c4a0faa5515eb38f1bf4a9ceedc1b6831c76ada39d9cfcbfe1e650df888","schema_version":"1.0","event_id":"sha256:d1e83c4a0faa5515eb38f1bf4a9ceedc1b6831c76ada39d9cfcbfe1e650df888"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QCEHIWXZNRSB3EWRSPPCWQ6TJX/bundle.json","state_url":"https://pith.science/pith/QCEHIWXZNRSB3EWRSPPCWQ6TJX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QCEHIWXZNRSB3EWRSPPCWQ6TJX/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":"2026-05-28T08:12:58Z","links":{"resolver":"https://pith.science/pith/QCEHIWXZNRSB3EWRSPPCWQ6TJX","bundle":"https://pith.science/pith/QCEHIWXZNRSB3EWRSPPCWQ6TJX/bundle.json","state":"https://pith.science/pith/QCEHIWXZNRSB3EWRSPPCWQ6TJX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QCEHIWXZNRSB3EWRSPPCWQ6TJX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:QCEHIWXZNRSB3EWRSPPCWQ6TJX","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":"816615cf588454caef20061d71755fbad073a09e843e725bb322f7b571f0de59","cross_cats_sorted":["cond-mat.mes-hall","cond-mat.other"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2013-10-01T16:53:39Z","title_canon_sha256":"fad68d5315dd820b0814302d24ad84c7380deadae8403c9ce6b037860109a890"},"schema_version":"1.0","source":{"id":"1310.0391","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1310.0391","created_at":"2026-05-18T02:57:08Z"},{"alias_kind":"arxiv_version","alias_value":"1310.0391v1","created_at":"2026-05-18T02:57:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1310.0391","created_at":"2026-05-18T02:57:08Z"},{"alias_kind":"pith_short_12","alias_value":"QCEHIWXZNRSB","created_at":"2026-05-18T12:27:57Z"},{"alias_kind":"pith_short_16","alias_value":"QCEHIWXZNRSB3EWR","created_at":"2026-05-18T12:27:57Z"},{"alias_kind":"pith_short_8","alias_value":"QCEHIWXZ","created_at":"2026-05-18T12:27:57Z"}],"graph_snapshots":[{"event_id":"sha256:d1e83c4a0faa5515eb38f1bf4a9ceedc1b6831c76ada39d9cfcbfe1e650df888","target":"graph","created_at":"2026-05-18T02:57:08Z","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":"Three-dimensional (3D) topological Dirac semimetals (TDSs) represent a novel state of quantum matter that can be viewed as '3D graphene'. In contrast to two-dimensional (2D) Dirac fermions in graphene or on the surface of 3D topological insulators, TDSs possess 3D Dirac fermions in the bulk. The TDS is also an important boundary state mediating numerous novel quantum states, such as topological insulators, Weyl semi-metals, Axion insulators and topological superconductors. By investigating the electronic structure of Na3Bi with angle resolved photoemission spectroscopy, we discovered 3D Dirac ","authors_text":"B. Zhou, D. Prabhakaran, H. M. Weng, S. -K. Mo, X. Dai, Y. L. Chen, Y. Zhang, Z. Fang, Z. Hussain, Z. J. Wang, Z. K. Liu, Z. X. Shen","cross_cats":["cond-mat.mes-hall","cond-mat.other"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2013-10-01T16:53:39Z","title":"Discovery of a Three-dimensional Topological Dirac Semimetal, Na3Bi"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1310.0391","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:aa19d9561bcdb58cc5e2d2e14d43ffc3aaeaa952e10cc2d929bc39dfa6feb2f7","target":"record","created_at":"2026-05-18T02:57:08Z","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":"816615cf588454caef20061d71755fbad073a09e843e725bb322f7b571f0de59","cross_cats_sorted":["cond-mat.mes-hall","cond-mat.other"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2013-10-01T16:53:39Z","title_canon_sha256":"fad68d5315dd820b0814302d24ad84c7380deadae8403c9ce6b037860109a890"},"schema_version":"1.0","source":{"id":"1310.0391","kind":"arxiv","version":1}},"canonical_sha256":"8088745af96c641d92d193de2b43d34dfe8d20676c47dbcd4c223f927eb07f12","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8088745af96c641d92d193de2b43d34dfe8d20676c47dbcd4c223f927eb07f12","first_computed_at":"2026-05-18T02:57:08.450697Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:57:08.450697Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"MzugZarc29oZQpEAkXops9tDNQ2h8wBIJm6wEVwKEy7v3hhFo2+kDmBQcnTokVzucMe91dEFbmVtyZqHKVFdAw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:57:08.451249Z","signed_message":"canonical_sha256_bytes"},"source_id":"1310.0391","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:aa19d9561bcdb58cc5e2d2e14d43ffc3aaeaa952e10cc2d929bc39dfa6feb2f7","sha256:d1e83c4a0faa5515eb38f1bf4a9ceedc1b6831c76ada39d9cfcbfe1e650df888"],"state_sha256":"48bf34245538a3cead244acd65bd5c659cb2b4938876b06ac87a517360afb333"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qDeyDy29O2p7u2SvF5mph7jFdPYHarwbWYtashIGaIbRHlHcrCCDgwH1X55ai11ducpOoqZ3pMOucDBaKr+WCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T08:12:58.439682Z","bundle_sha256":"3f15a14de3b956e1824ecf26ee11789bdfc0c46a90e00f1ec68fbafb7cf09c91"}}