{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:C47L3BPU2GYFL7WNUEUHF5ZHPF","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":"e6a8cf7f081fe800256a83ba52d25f02a518c52765e3afb92dbe1c0a90aa17d6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-03-28T23:36:28Z","title_canon_sha256":"34bab2ab302218fd9b96e112405bbf51202a04d730d3d9829cec1fa50ed2977a"},"schema_version":"1.0","source":{"id":"1503.08367","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1503.08367","created_at":"2026-05-18T02:20:02Z"},{"alias_kind":"arxiv_version","alias_value":"1503.08367v1","created_at":"2026-05-18T02:20:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.08367","created_at":"2026-05-18T02:20:02Z"},{"alias_kind":"pith_short_12","alias_value":"C47L3BPU2GYF","created_at":"2026-05-18T12:29:14Z"},{"alias_kind":"pith_short_16","alias_value":"C47L3BPU2GYFL7WN","created_at":"2026-05-18T12:29:14Z"},{"alias_kind":"pith_short_8","alias_value":"C47L3BPU","created_at":"2026-05-18T12:29:14Z"}],"graph_snapshots":[{"event_id":"sha256:d35b8a31cff37aa58b416e395ba7e1190816849a4d6b63c247e5514bef2277f2","target":"graph","created_at":"2026-05-18T02:20:02Z","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":"One hundred years after its first successful synthesis in the bulk form in 1914, black phosphorus (black P) was recently rediscovered from the perspective of a two-dimensional (2D) layered material, attracting tremendous interest from condensed matter physicists, chemists, semiconductor device engineers and material scientists. Similar to graphite and transition metal dichalcogenides (TMDs), black P has a layered structure but with a unique puckered single layer geometry. Because the direct electronic band gap of thin film black P can be varied from 0.3 to around 2 eV, depending on its film th","authors_text":"Fengnian Xia, Han Wang, Mildred Dresselhaus, Shengxi Huang, Xi Ling","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-03-28T23:36:28Z","title":"The Renaissance of Black Phosphorus"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.08367","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":"sha256:2b5cfcda5a2d559f0be5e08e3b9ce262eb1064eba42dff63e1c8010535ca33dd","target":"record","created_at":"2026-05-18T02:20:02Z","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":"e6a8cf7f081fe800256a83ba52d25f02a518c52765e3afb92dbe1c0a90aa17d6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-03-28T23:36:28Z","title_canon_sha256":"34bab2ab302218fd9b96e112405bbf51202a04d730d3d9829cec1fa50ed2977a"},"schema_version":"1.0","source":{"id":"1503.08367","kind":"arxiv","version":1}},"canonical_sha256":"173ebd85f4d1b055fecda12872f72779566565bf81c3d1fd6d4b3374288a8f5b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"173ebd85f4d1b055fecda12872f72779566565bf81c3d1fd6d4b3374288a8f5b","first_computed_at":"2026-05-18T02:20:02.028230Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:20:02.028230Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"qM53khoY6EFBYXeuM6HRt69SCvIpBOjcI3fD2e8wsOqEnDqb+7ZVq7S6tEZTh4P3TR6h7hqFz0jfRqQbJujVAg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:20:02.028929Z","signed_message":"canonical_sha256_bytes"},"source_id":"1503.08367","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2b5cfcda5a2d559f0be5e08e3b9ce262eb1064eba42dff63e1c8010535ca33dd","sha256:d35b8a31cff37aa58b416e395ba7e1190816849a4d6b63c247e5514bef2277f2"],"state_sha256":"f19fc4b80ae1e8c37e30e081e96615847af8e246d1bce700a7846c97533177ac"}