{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:EQAKGOSWCATYVM3DMJXBYH53G4","short_pith_number":"pith:EQAKGOSW","canonical_record":{"source":{"id":"1909.04037","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-09-09T18:00:00Z","cross_cats_sorted":["cond-mat.str-el"],"title_canon_sha256":"358b017b5ca4404a651744b6237f00dba4b7b96138095cb2f1bd1d7919852fca","abstract_canon_sha256":"6225469307efa6bb9f1b82e811c5a5d621624b70de1841b0e018c0f53cd3f408"},"schema_version":"1.0"},"canonical_sha256":"2400a33a5610278ab363626e1c1fbb37038c90d51a65c1d7f167bd600714bd25","source":{"kind":"arxiv","id":"1909.04037","version":4},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1909.04037","created_at":"2026-07-05T02:22:21Z"},{"alias_kind":"arxiv_version","alias_value":"1909.04037v4","created_at":"2026-07-05T02:22:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1909.04037","created_at":"2026-07-05T02:22:21Z"},{"alias_kind":"pith_short_12","alias_value":"EQAKGOSWCATY","created_at":"2026-07-05T02:22:21Z"},{"alias_kind":"pith_short_16","alias_value":"EQAKGOSWCATYVM3D","created_at":"2026-07-05T02:22:21Z"},{"alias_kind":"pith_short_8","alias_value":"EQAKGOSW","created_at":"2026-07-05T02:22:21Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:EQAKGOSWCATYVM3DMJXBYH53G4","target":"record","payload":{"canonical_record":{"source":{"id":"1909.04037","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-09-09T18:00:00Z","cross_cats_sorted":["cond-mat.str-el"],"title_canon_sha256":"358b017b5ca4404a651744b6237f00dba4b7b96138095cb2f1bd1d7919852fca","abstract_canon_sha256":"6225469307efa6bb9f1b82e811c5a5d621624b70de1841b0e018c0f53cd3f408"},"schema_version":"1.0"},"canonical_sha256":"2400a33a5610278ab363626e1c1fbb37038c90d51a65c1d7f167bd600714bd25","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:22:21.162300Z","signature_b64":"grtyGNxPhdozHbpiiMBQu//pwiQ/djHberMEMzwRQOqbShg9q+Y2DtP3PaxRhR666HD6KccNHsSMyGcGbVVKDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2400a33a5610278ab363626e1c1fbb37038c90d51a65c1d7f167bd600714bd25","last_reissued_at":"2026-07-05T02:22:21.161797Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:22:21.161797Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1909.04037","source_version":4,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T02:22:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"x4Hr0QWO5ezl4LEHS+Wd3/7z0oa4TVn5Fj/CgwWL/ujBormQRfTMX5yyzL0YzWuW1tmJcMWQhIkvHQ8xW1QWDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-24T09:20:13.838164Z"},"content_sha256":"3df407011ab3f5459bd10fb2be028170ce2ec205fca00152eb942d3ffd37a3cf","schema_version":"1.0","event_id":"sha256:3df407011ab3f5459bd10fb2be028170ce2ec205fca00152eb942d3ffd37a3cf"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:EQAKGOSWCATYVM3DMJXBYH53G4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A Charge-Density-Wave Topological Semimetal","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.str-el"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"B. Andrei Bernevig, Benjamin J. Wieder, Claudia Felser, H. L. Meyerheim, Jagannath Jena, Klaus Koepernik, Lei Shen, Lexian Yang, Peter Werner, Stuart Parkin, Wujun Shi, Yang Zhang, Yanpeng Qi, Yan Sun, Yiwei Li, Yulin Chen, Zhijun Wang","submitted_at":"2019-09-09T18:00:00Z","abstract_excerpt":"Topological physics and strong electron-electron correlations in quantum materials are typically studied independently. However, there have been rapid recent developments in quantum materials in which topological phase transitions emerge when the single-particle band structure is modified by strong interactions. We here demonstrate that the room-temperature phase of (TaSe$_4$)$_2$I is a Weyl semimetal with 24 pairs of Weyl nodes. Owing to its quasi-1D structure, (TaSe$_4$)$_2$I hosts an established CDW instability just below room temperature. Using X-ray diffraction, angle-resolved photoemissi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1909.04037","kind":"arxiv","version":4},"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/1909.04037/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":"2026-07-05T02:22:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iXnn4ict0HGPnbh1CxkIef0yrxxy40hUWekpvO9lvX9ljVhnWJEmt5j65NkwWGkDoll6L0EU6fSstPqg63EZAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-24T09:20:13.838551Z"},"content_sha256":"aaeff9475b0163096160acf3354fa18045a6d8fc69ec807c5dfd17a282c0852c","schema_version":"1.0","event_id":"sha256:aaeff9475b0163096160acf3354fa18045a6d8fc69ec807c5dfd17a282c0852c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/EQAKGOSWCATYVM3DMJXBYH53G4/bundle.json","state_url":"https://pith.science/pith/EQAKGOSWCATYVM3DMJXBYH53G4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/EQAKGOSWCATYVM3DMJXBYH53G4/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":"2026-07-24T09:20:13Z","links":{"resolver":"https://pith.science/pith/EQAKGOSWCATYVM3DMJXBYH53G4","bundle":"https://pith.science/pith/EQAKGOSWCATYVM3DMJXBYH53G4/bundle.json","state":"https://pith.science/pith/EQAKGOSWCATYVM3DMJXBYH53G4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/EQAKGOSWCATYVM3DMJXBYH53G4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:EQAKGOSWCATYVM3DMJXBYH53G4","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":"6225469307efa6bb9f1b82e811c5a5d621624b70de1841b0e018c0f53cd3f408","cross_cats_sorted":["cond-mat.str-el"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-09-09T18:00:00Z","title_canon_sha256":"358b017b5ca4404a651744b6237f00dba4b7b96138095cb2f1bd1d7919852fca"},"schema_version":"1.0","source":{"id":"1909.04037","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1909.04037","created_at":"2026-07-05T02:22:21Z"},{"alias_kind":"arxiv_version","alias_value":"1909.04037v4","created_at":"2026-07-05T02:22:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1909.04037","created_at":"2026-07-05T02:22:21Z"},{"alias_kind":"pith_short_12","alias_value":"EQAKGOSWCATY","created_at":"2026-07-05T02:22:21Z"},{"alias_kind":"pith_short_16","alias_value":"EQAKGOSWCATYVM3D","created_at":"2026-07-05T02:22:21Z"},{"alias_kind":"pith_short_8","alias_value":"EQAKGOSW","created_at":"2026-07-05T02:22:21Z"}],"graph_snapshots":[{"event_id":"sha256:aaeff9475b0163096160acf3354fa18045a6d8fc69ec807c5dfd17a282c0852c","target":"graph","created_at":"2026-07-05T02:22:21Z","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/1909.04037/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Topological physics and strong electron-electron correlations in quantum materials are typically studied independently. However, there have been rapid recent developments in quantum materials in which topological phase transitions emerge when the single-particle band structure is modified by strong interactions. We here demonstrate that the room-temperature phase of (TaSe$_4$)$_2$I is a Weyl semimetal with 24 pairs of Weyl nodes. Owing to its quasi-1D structure, (TaSe$_4$)$_2$I hosts an established CDW instability just below room temperature. Using X-ray diffraction, angle-resolved photoemissi","authors_text":"B. Andrei Bernevig, Benjamin J. Wieder, Claudia Felser, H. L. Meyerheim, Jagannath Jena, Klaus Koepernik, Lei Shen, Lexian Yang, Peter Werner, Stuart Parkin, Wujun Shi, Yang Zhang, Yanpeng Qi, Yan Sun, Yiwei Li, Yulin Chen, Zhijun Wang","cross_cats":["cond-mat.str-el"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-09-09T18:00:00Z","title":"A Charge-Density-Wave Topological Semimetal"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1909.04037","kind":"arxiv","version":4},"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":"sha256:3df407011ab3f5459bd10fb2be028170ce2ec205fca00152eb942d3ffd37a3cf","target":"record","created_at":"2026-07-05T02:22:21Z","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":"6225469307efa6bb9f1b82e811c5a5d621624b70de1841b0e018c0f53cd3f408","cross_cats_sorted":["cond-mat.str-el"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-09-09T18:00:00Z","title_canon_sha256":"358b017b5ca4404a651744b6237f00dba4b7b96138095cb2f1bd1d7919852fca"},"schema_version":"1.0","source":{"id":"1909.04037","kind":"arxiv","version":4}},"canonical_sha256":"2400a33a5610278ab363626e1c1fbb37038c90d51a65c1d7f167bd600714bd25","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2400a33a5610278ab363626e1c1fbb37038c90d51a65c1d7f167bd600714bd25","first_computed_at":"2026-07-05T02:22:21.161797Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:22:21.161797Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"grtyGNxPhdozHbpiiMBQu//pwiQ/djHberMEMzwRQOqbShg9q+Y2DtP3PaxRhR666HD6KccNHsSMyGcGbVVKDg==","signature_status":"signed_v1","signed_at":"2026-07-05T02:22:21.162300Z","signed_message":"canonical_sha256_bytes"},"source_id":"1909.04037","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3df407011ab3f5459bd10fb2be028170ce2ec205fca00152eb942d3ffd37a3cf","sha256:aaeff9475b0163096160acf3354fa18045a6d8fc69ec807c5dfd17a282c0852c"],"state_sha256":"bc9beeb7c800f8cf76684fa5cb8eacb49e535ed9077bd57b5ed9ff8fbc79846a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"P5RKpJY94EQ916bIOX23yc9Rx17aiKvXgRIN5zIKPpsDAHXYpZpgBm6mleNSgdpIfFdKiybriA8xDPgVREkUDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-24T09:20:13.840774Z","bundle_sha256":"d519276539c2c1c1e8cfd4369bf0b75c3f079e353452fa09e6a876e3d2aefafd"}}