{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:SHE5PZJ7LX4XP4KCFOC4YHWZA7","short_pith_number":"pith:SHE5PZJ7","canonical_record":{"source":{"id":"1711.00632","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2017-11-02T06:49:13Z","cross_cats_sorted":["cond-mat.str-el"],"title_canon_sha256":"f44265ee9f6c1c1ca4325df567cc5f28962742c303c8128264b14df11d47168c","abstract_canon_sha256":"1af53a3160a1eb1e6be7e2b446d91a903e1b594b2ac95494b55067bef60a42d3"},"schema_version":"1.0"},"canonical_sha256":"91c9d7e53f5df977f1422b85cc1ed907fc902a8c8ff528e21dd161b35c6d1e33","source":{"kind":"arxiv","id":"1711.00632","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1711.00632","created_at":"2026-05-17T23:58:48Z"},{"alias_kind":"arxiv_version","alias_value":"1711.00632v1","created_at":"2026-05-17T23:58:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1711.00632","created_at":"2026-05-17T23:58:48Z"},{"alias_kind":"pith_short_12","alias_value":"SHE5PZJ7LX4X","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_16","alias_value":"SHE5PZJ7LX4XP4KC","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_8","alias_value":"SHE5PZJ7","created_at":"2026-05-18T12:31:43Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:SHE5PZJ7LX4XP4KCFOC4YHWZA7","target":"record","payload":{"canonical_record":{"source":{"id":"1711.00632","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2017-11-02T06:49:13Z","cross_cats_sorted":["cond-mat.str-el"],"title_canon_sha256":"f44265ee9f6c1c1ca4325df567cc5f28962742c303c8128264b14df11d47168c","abstract_canon_sha256":"1af53a3160a1eb1e6be7e2b446d91a903e1b594b2ac95494b55067bef60a42d3"},"schema_version":"1.0"},"canonical_sha256":"91c9d7e53f5df977f1422b85cc1ed907fc902a8c8ff528e21dd161b35c6d1e33","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:58:48.501226Z","signature_b64":"R5hL0UCvEJDelmTxCf9h3TEDHgqd89ei7fth4Sc0Fy4oczNmNFyZ3MKgFj5Ut0dYT0dM+6j04QgsT3nhWdHBAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"91c9d7e53f5df977f1422b85cc1ed907fc902a8c8ff528e21dd161b35c6d1e33","last_reissued_at":"2026-05-17T23:58:48.500817Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:58:48.500817Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1711.00632","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":"2026-05-17T23:58:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bY2aleDk+0hy4oQR7YeSCA2sjXgNoWlMxzW7iaLzCJviROxHWnqgb5ciPuEIc+LJhguo3dshotkGSAV1xnFhDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T01:32:49.558743Z"},"content_sha256":"957045c529bae89edf6c0c61417791c62fcf1825012c4a42b0355c71162a7134","schema_version":"1.0","event_id":"sha256:957045c529bae89edf6c0c61417791c62fcf1825012c4a42b0355c71162a7134"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:SHE5PZJ7LX4XP4KCFOC4YHWZA7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Topological spin excitations observed in a three-dimensional antiferromagnet","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.str-el"],"primary_cat":"cond-mat.mes-hall","authors_text":"Chen Fang, Chenyuan Li, Kangkang Li, Kazuki Iida, Kazuya Kamazawa, Lichen Wang, Shangjie Xue, Weiliang Yao, Yang Dan, Yuan Li","submitted_at":"2017-11-02T06:49:13Z","abstract_excerpt":"Band topology, or global wave-function structure that enforces novel properties in the bulk and on the surface of crystalline materials, is currently under intense investigations for both fundamental interest and its technological promises. While band crossing of non-trivial topological nature was first studied in three dimensions for electrons, the underlying physical idea is not restricted to fermionic excitations. In fact, experiments have confirmed the possibility to have topological band crossing of electromagnetic waves in artificial structures. Fundamental bosonic excitations in real cr"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1711.00632","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":"2026-05-17T23:58:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6BFgkyl4pPhU8MknHjsJu0Ow/nIA7MVCNCstlJRKVmW4wR/cMWA+2fHMxhvNXAZmx5n2WZC5XM3/UxNHgmGzAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T01:32:49.559101Z"},"content_sha256":"e2f1b3c1a86b37fbc98652c2d57478ec384f9c6ac15a055dd712f7b8ca255d1f","schema_version":"1.0","event_id":"sha256:e2f1b3c1a86b37fbc98652c2d57478ec384f9c6ac15a055dd712f7b8ca255d1f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SHE5PZJ7LX4XP4KCFOC4YHWZA7/bundle.json","state_url":"https://pith.science/pith/SHE5PZJ7LX4XP4KCFOC4YHWZA7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SHE5PZJ7LX4XP4KCFOC4YHWZA7/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":"2026-05-27T01:32:49Z","links":{"resolver":"https://pith.science/pith/SHE5PZJ7LX4XP4KCFOC4YHWZA7","bundle":"https://pith.science/pith/SHE5PZJ7LX4XP4KCFOC4YHWZA7/bundle.json","state":"https://pith.science/pith/SHE5PZJ7LX4XP4KCFOC4YHWZA7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SHE5PZJ7LX4XP4KCFOC4YHWZA7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:SHE5PZJ7LX4XP4KCFOC4YHWZA7","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":"1af53a3160a1eb1e6be7e2b446d91a903e1b594b2ac95494b55067bef60a42d3","cross_cats_sorted":["cond-mat.str-el"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2017-11-02T06:49:13Z","title_canon_sha256":"f44265ee9f6c1c1ca4325df567cc5f28962742c303c8128264b14df11d47168c"},"schema_version":"1.0","source":{"id":"1711.00632","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1711.00632","created_at":"2026-05-17T23:58:48Z"},{"alias_kind":"arxiv_version","alias_value":"1711.00632v1","created_at":"2026-05-17T23:58:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1711.00632","created_at":"2026-05-17T23:58:48Z"},{"alias_kind":"pith_short_12","alias_value":"SHE5PZJ7LX4X","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_16","alias_value":"SHE5PZJ7LX4XP4KC","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_8","alias_value":"SHE5PZJ7","created_at":"2026-05-18T12:31:43Z"}],"graph_snapshots":[{"event_id":"sha256:e2f1b3c1a86b37fbc98652c2d57478ec384f9c6ac15a055dd712f7b8ca255d1f","target":"graph","created_at":"2026-05-17T23:58:48Z","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":"Band topology, or global wave-function structure that enforces novel properties in the bulk and on the surface of crystalline materials, is currently under intense investigations for both fundamental interest and its technological promises. While band crossing of non-trivial topological nature was first studied in three dimensions for electrons, the underlying physical idea is not restricted to fermionic excitations. In fact, experiments have confirmed the possibility to have topological band crossing of electromagnetic waves in artificial structures. Fundamental bosonic excitations in real cr","authors_text":"Chen Fang, Chenyuan Li, Kangkang Li, Kazuki Iida, Kazuya Kamazawa, Lichen Wang, Shangjie Xue, Weiliang Yao, Yang Dan, Yuan Li","cross_cats":["cond-mat.str-el"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2017-11-02T06:49:13Z","title":"Topological spin excitations observed in a three-dimensional antiferromagnet"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1711.00632","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":"sha256:957045c529bae89edf6c0c61417791c62fcf1825012c4a42b0355c71162a7134","target":"record","created_at":"2026-05-17T23:58:48Z","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":"1af53a3160a1eb1e6be7e2b446d91a903e1b594b2ac95494b55067bef60a42d3","cross_cats_sorted":["cond-mat.str-el"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2017-11-02T06:49:13Z","title_canon_sha256":"f44265ee9f6c1c1ca4325df567cc5f28962742c303c8128264b14df11d47168c"},"schema_version":"1.0","source":{"id":"1711.00632","kind":"arxiv","version":1}},"canonical_sha256":"91c9d7e53f5df977f1422b85cc1ed907fc902a8c8ff528e21dd161b35c6d1e33","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"91c9d7e53f5df977f1422b85cc1ed907fc902a8c8ff528e21dd161b35c6d1e33","first_computed_at":"2026-05-17T23:58:48.500817Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:58:48.500817Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"R5hL0UCvEJDelmTxCf9h3TEDHgqd89ei7fth4Sc0Fy4oczNmNFyZ3MKgFj5Ut0dYT0dM+6j04QgsT3nhWdHBAQ==","signature_status":"signed_v1","signed_at":"2026-05-17T23:58:48.501226Z","signed_message":"canonical_sha256_bytes"},"source_id":"1711.00632","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:957045c529bae89edf6c0c61417791c62fcf1825012c4a42b0355c71162a7134","sha256:e2f1b3c1a86b37fbc98652c2d57478ec384f9c6ac15a055dd712f7b8ca255d1f"],"state_sha256":"aebcdecdcf47c116aaa905b9b10dbec853350498d21b53c6f06560853e499106"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"aFb7QuruLbWCeozWI+xm4vniyUjY4/yTcKMbMOMZSHx8C5C8Cu32yfMmwpXo3/m4Xgmqz+umNzoJRupW1RIyBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T01:32:49.561429Z","bundle_sha256":"963744d1137133f0ea37297f6b5c0a2d1bf45ec908f1fb5f2fbe6b073718dbce"}}