{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:SNNXPLB2WYOBOIXWDHT4B5L5JB","short_pith_number":"pith:SNNXPLB2","canonical_record":{"source":{"id":"1208.5864","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2012-08-29T08:44:42Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"de912a0b7cdc480384e2b62c1f61403e485660fbd961e376d0dc9f026b98653a","abstract_canon_sha256":"894b34cb3a90341ed636ed3e6e9b3ec902a05478d036df83db6f3de9c2558b4d"},"schema_version":"1.0"},"canonical_sha256":"935b77ac3ab61c1722f619e7c0f57d486487b34bec30d347400e381646334811","source":{"kind":"arxiv","id":"1208.5864","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1208.5864","created_at":"2026-05-18T03:27:54Z"},{"alias_kind":"arxiv_version","alias_value":"1208.5864v1","created_at":"2026-05-18T03:27:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1208.5864","created_at":"2026-05-18T03:27:54Z"},{"alias_kind":"pith_short_12","alias_value":"SNNXPLB2WYOB","created_at":"2026-05-18T12:27:20Z"},{"alias_kind":"pith_short_16","alias_value":"SNNXPLB2WYOBOIXW","created_at":"2026-05-18T12:27:20Z"},{"alias_kind":"pith_short_8","alias_value":"SNNXPLB2","created_at":"2026-05-18T12:27:20Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:SNNXPLB2WYOBOIXWDHT4B5L5JB","target":"record","payload":{"canonical_record":{"source":{"id":"1208.5864","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2012-08-29T08:44:42Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"de912a0b7cdc480384e2b62c1f61403e485660fbd961e376d0dc9f026b98653a","abstract_canon_sha256":"894b34cb3a90341ed636ed3e6e9b3ec902a05478d036df83db6f3de9c2558b4d"},"schema_version":"1.0"},"canonical_sha256":"935b77ac3ab61c1722f619e7c0f57d486487b34bec30d347400e381646334811","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:27:54.638795Z","signature_b64":"h9cvpifEAf9rWjYIkxDpqG55TRLRkDeQ/13hl/r4PjrujrM/c3Pn/kBAA7gt9bKCFDYIhaw24oz6NCb4GV3CDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"935b77ac3ab61c1722f619e7c0f57d486487b34bec30d347400e381646334811","last_reissued_at":"2026-05-18T03:27:54.638197Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:27:54.638197Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1208.5864","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":"2026-05-18T03:27:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gYzZEc5FMf9pu4xTwW4K3sKFUSqj8lkIckH2wYeKO7NJ8L0aSTPRKhyj/OWNvTgnpPlHvrOEumKkXedc/3D0DQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T18:40:18.986478Z"},"content_sha256":"7747e620120b4fef5bb99e032516b1b7d6a2e0307cdaaac961619f8e04d81b32","schema_version":"1.0","event_id":"sha256:7747e620120b4fef5bb99e032516b1b7d6a2e0307cdaaac961619f8e04d81b32"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:SNNXPLB2WYOBOIXWDHT4B5L5JB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Optical signature of symmetry variations and spin-valley coupling in atomically thin tungsten dichalcogenides","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"cond-mat.mes-hall","authors_text":"Bairen Zhu, Gui-Bin Liu, Hualing Zeng, Junfeng Dai, Lu Xie, Ruicong He, Shijie Xu, Wang Yao, Xianhui Chen, Xiaodong Cui, Yajun Yan","submitted_at":"2012-08-29T08:44:42Z","abstract_excerpt":"Motivated by the triumph and limitation of graphene for electronic applications, atomically thin layers of group VI transition metal dichalcogenides are attracting extensive interest as a class of graphene-like semiconductors with a desired band-gap in the visible frequency range. The monolayers feature a valence band spin splitting with opposite sign in the two valleys located at corners of 1st Brillouin zone. This spin-valley coupling, particularly pronounced in tungsten dichalcogenides, can benefit potential spintronics and valleytronics with the important consequences of spin-valley interp"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1208.5864","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":"2026-05-18T03:27:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"l/4BHKn31aLZTcWxEaQGcHGlWnHBAR02zCWmt+xWIKnIJYXBw/p3/Na+L+48grEQDuGG0wmFthEp/dYrwt9xAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T18:40:18.987104Z"},"content_sha256":"f941bc59f6458a8e1e53ce1c4abf30152bd59ccb2bea2808d2802e0943c06fea","schema_version":"1.0","event_id":"sha256:f941bc59f6458a8e1e53ce1c4abf30152bd59ccb2bea2808d2802e0943c06fea"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SNNXPLB2WYOBOIXWDHT4B5L5JB/bundle.json","state_url":"https://pith.science/pith/SNNXPLB2WYOBOIXWDHT4B5L5JB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SNNXPLB2WYOBOIXWDHT4B5L5JB/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":"2026-05-25T18:40:18Z","links":{"resolver":"https://pith.science/pith/SNNXPLB2WYOBOIXWDHT4B5L5JB","bundle":"https://pith.science/pith/SNNXPLB2WYOBOIXWDHT4B5L5JB/bundle.json","state":"https://pith.science/pith/SNNXPLB2WYOBOIXWDHT4B5L5JB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SNNXPLB2WYOBOIXWDHT4B5L5JB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:SNNXPLB2WYOBOIXWDHT4B5L5JB","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":"894b34cb3a90341ed636ed3e6e9b3ec902a05478d036df83db6f3de9c2558b4d","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2012-08-29T08:44:42Z","title_canon_sha256":"de912a0b7cdc480384e2b62c1f61403e485660fbd961e376d0dc9f026b98653a"},"schema_version":"1.0","source":{"id":"1208.5864","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1208.5864","created_at":"2026-05-18T03:27:54Z"},{"alias_kind":"arxiv_version","alias_value":"1208.5864v1","created_at":"2026-05-18T03:27:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1208.5864","created_at":"2026-05-18T03:27:54Z"},{"alias_kind":"pith_short_12","alias_value":"SNNXPLB2WYOB","created_at":"2026-05-18T12:27:20Z"},{"alias_kind":"pith_short_16","alias_value":"SNNXPLB2WYOBOIXW","created_at":"2026-05-18T12:27:20Z"},{"alias_kind":"pith_short_8","alias_value":"SNNXPLB2","created_at":"2026-05-18T12:27:20Z"}],"graph_snapshots":[{"event_id":"sha256:f941bc59f6458a8e1e53ce1c4abf30152bd59ccb2bea2808d2802e0943c06fea","target":"graph","created_at":"2026-05-18T03:27:54Z","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":"Motivated by the triumph and limitation of graphene for electronic applications, atomically thin layers of group VI transition metal dichalcogenides are attracting extensive interest as a class of graphene-like semiconductors with a desired band-gap in the visible frequency range. The monolayers feature a valence band spin splitting with opposite sign in the two valleys located at corners of 1st Brillouin zone. This spin-valley coupling, particularly pronounced in tungsten dichalcogenides, can benefit potential spintronics and valleytronics with the important consequences of spin-valley interp","authors_text":"Bairen Zhu, Gui-Bin Liu, Hualing Zeng, Junfeng Dai, Lu Xie, Ruicong He, Shijie Xu, Wang Yao, Xianhui Chen, Xiaodong Cui, Yajun Yan","cross_cats":["cond-mat.mtrl-sci"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2012-08-29T08:44:42Z","title":"Optical signature of symmetry variations and spin-valley coupling in atomically thin tungsten dichalcogenides"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1208.5864","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":"sha256:7747e620120b4fef5bb99e032516b1b7d6a2e0307cdaaac961619f8e04d81b32","target":"record","created_at":"2026-05-18T03:27:54Z","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":"894b34cb3a90341ed636ed3e6e9b3ec902a05478d036df83db6f3de9c2558b4d","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2012-08-29T08:44:42Z","title_canon_sha256":"de912a0b7cdc480384e2b62c1f61403e485660fbd961e376d0dc9f026b98653a"},"schema_version":"1.0","source":{"id":"1208.5864","kind":"arxiv","version":1}},"canonical_sha256":"935b77ac3ab61c1722f619e7c0f57d486487b34bec30d347400e381646334811","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"935b77ac3ab61c1722f619e7c0f57d486487b34bec30d347400e381646334811","first_computed_at":"2026-05-18T03:27:54.638197Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:27:54.638197Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"h9cvpifEAf9rWjYIkxDpqG55TRLRkDeQ/13hl/r4PjrujrM/c3Pn/kBAA7gt9bKCFDYIhaw24oz6NCb4GV3CDw==","signature_status":"signed_v1","signed_at":"2026-05-18T03:27:54.638795Z","signed_message":"canonical_sha256_bytes"},"source_id":"1208.5864","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7747e620120b4fef5bb99e032516b1b7d6a2e0307cdaaac961619f8e04d81b32","sha256:f941bc59f6458a8e1e53ce1c4abf30152bd59ccb2bea2808d2802e0943c06fea"],"state_sha256":"dee4ce4b4acc0ca8fd9cae61b66ecea1abff977a44cf0b086548dc0d9a95e0e9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+EI4bzDL8W1aZHq3P+OTtd+9lJCxXyhVxJRrgWaAfHsYHH7Wk5fQ1TzUuC7+xVAyUPowGCDWJYsMRaq9OUgGBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T18:40:18.990377Z","bundle_sha256":"b835a0205674ebba7c4d0ab7bb357a7bd27d00662133e2e5864445cda51f7fd5"}}