{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:6ZAKROICM2RBCDQF3YXTCJEZR6","short_pith_number":"pith:6ZAKROIC","canonical_record":{"source":{"id":"1712.06716","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2017-12-18T23:15:00Z","cross_cats_sorted":[],"title_canon_sha256":"d888d3b54359a78691caf1b1958b2fe38086b10691e15d7b780c6dd20c7feef7","abstract_canon_sha256":"b8c55edfe473ab70fa3383be45fca4e0a1cd3937bc364dd0933603870effb6b2"},"schema_version":"1.0"},"canonical_sha256":"f640a8b90266a2110e05de2f3124998fa001efaecfb9843b0e9c367083769b16","source":{"kind":"arxiv","id":"1712.06716","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1712.06716","created_at":"2026-05-18T00:20:16Z"},{"alias_kind":"arxiv_version","alias_value":"1712.06716v1","created_at":"2026-05-18T00:20:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1712.06716","created_at":"2026-05-18T00:20:16Z"},{"alias_kind":"pith_short_12","alias_value":"6ZAKROICM2RB","created_at":"2026-05-18T12:31:03Z"},{"alias_kind":"pith_short_16","alias_value":"6ZAKROICM2RBCDQF","created_at":"2026-05-18T12:31:03Z"},{"alias_kind":"pith_short_8","alias_value":"6ZAKROIC","created_at":"2026-05-18T12:31:03Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:6ZAKROICM2RBCDQF3YXTCJEZR6","target":"record","payload":{"canonical_record":{"source":{"id":"1712.06716","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2017-12-18T23:15:00Z","cross_cats_sorted":[],"title_canon_sha256":"d888d3b54359a78691caf1b1958b2fe38086b10691e15d7b780c6dd20c7feef7","abstract_canon_sha256":"b8c55edfe473ab70fa3383be45fca4e0a1cd3937bc364dd0933603870effb6b2"},"schema_version":"1.0"},"canonical_sha256":"f640a8b90266a2110e05de2f3124998fa001efaecfb9843b0e9c367083769b16","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:20:16.274337Z","signature_b64":"IZNoA+84u/K5Ss/gLe3mx5SgXPl2sqCKkH7oeB4qvhosg5ZP6Y5hYU3ny6+i/0FPJxDka+eyMPHISPZJx+ilBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f640a8b90266a2110e05de2f3124998fa001efaecfb9843b0e9c367083769b16","last_reissued_at":"2026-05-18T00:20:16.273747Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:20:16.273747Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1712.06716","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":"2026-05-18T00:20:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3sUOz9gKOiIYgC2ax0gufDnnLATm34g+oaPF6CyJzlamrbsq8dV2wbmopA4wRZuWlFH8Ff4/DaN4TI5Vg8OJBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T13:01:34.491956Z"},"content_sha256":"c5d94e876a2cd4cb5643f12f2510703f50ce828077414d2909c55f10ea785bc9","schema_version":"1.0","event_id":"sha256:c5d94e876a2cd4cb5643f12f2510703f50ce828077414d2909c55f10ea785bc9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:6ZAKROICM2RBCDQF3YXTCJEZR6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Investigation on the reported superconductivity in intercalated black phosphorus","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.supr-con","authors_text":"(2) Department of Physics, Bing Lv (2), Ching-Wu Chu (1) ((1) Department of Physics, Dezhi Wang (1), Fei Tian (1), Hanming Yuan (1), Houston, Hui Wang (1), Jingying Sun (1), Liangzi Deng (1), Richardson, Sheng Li (2), Shuo Chen (1), Shuyuan Huyan (1), Texas, Texas), Texas Center for Superconductivity, University of Houston, University of Texas at Dallas, Yizhou Ni (1), Ze Yang (1), Zheng Wu (1), Zhifeng Ren (1)","submitted_at":"2017-12-18T23:15:00Z","abstract_excerpt":"Superconductivity intrinsic to the intercalated black phosphorus (BP) with a transition temperature Tc of 3.8 K, independent of the intercalant, whether an alkali or an alkaline earth element, has been reported recently by R. Zhang et al. (2017). However, the reported Tc and the field effect on the superconducting (SC) transition both bear great similarities to those for the pure Sn, which is commonly used for BP synthesis under the vapor transport method. We have therefore decided to determine whether a minute amount of Sn is present in the starting high purity BP crystals and whether it is t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1712.06716","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":"2026-05-18T00:20:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"36D5O4Rs+nwCyF6Bo2A+jZhml+ddgjDN4Mk7zUYZYGphQO+nWYjkmXnk4GtOsOBpsytca/+/GmUMwTk4KDiWCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T13:01:34.492308Z"},"content_sha256":"c8b034c8d8a6f8d874d6b3c718573179f5bcc9c120d9dc71f253355542550418","schema_version":"1.0","event_id":"sha256:c8b034c8d8a6f8d874d6b3c718573179f5bcc9c120d9dc71f253355542550418"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6ZAKROICM2RBCDQF3YXTCJEZR6/bundle.json","state_url":"https://pith.science/pith/6ZAKROICM2RBCDQF3YXTCJEZR6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6ZAKROICM2RBCDQF3YXTCJEZR6/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":"2026-06-05T13:01:34Z","links":{"resolver":"https://pith.science/pith/6ZAKROICM2RBCDQF3YXTCJEZR6","bundle":"https://pith.science/pith/6ZAKROICM2RBCDQF3YXTCJEZR6/bundle.json","state":"https://pith.science/pith/6ZAKROICM2RBCDQF3YXTCJEZR6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6ZAKROICM2RBCDQF3YXTCJEZR6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:6ZAKROICM2RBCDQF3YXTCJEZR6","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":"b8c55edfe473ab70fa3383be45fca4e0a1cd3937bc364dd0933603870effb6b2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2017-12-18T23:15:00Z","title_canon_sha256":"d888d3b54359a78691caf1b1958b2fe38086b10691e15d7b780c6dd20c7feef7"},"schema_version":"1.0","source":{"id":"1712.06716","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1712.06716","created_at":"2026-05-18T00:20:16Z"},{"alias_kind":"arxiv_version","alias_value":"1712.06716v1","created_at":"2026-05-18T00:20:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1712.06716","created_at":"2026-05-18T00:20:16Z"},{"alias_kind":"pith_short_12","alias_value":"6ZAKROICM2RB","created_at":"2026-05-18T12:31:03Z"},{"alias_kind":"pith_short_16","alias_value":"6ZAKROICM2RBCDQF","created_at":"2026-05-18T12:31:03Z"},{"alias_kind":"pith_short_8","alias_value":"6ZAKROIC","created_at":"2026-05-18T12:31:03Z"}],"graph_snapshots":[{"event_id":"sha256:c8b034c8d8a6f8d874d6b3c718573179f5bcc9c120d9dc71f253355542550418","target":"graph","created_at":"2026-05-18T00:20:16Z","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":"Superconductivity intrinsic to the intercalated black phosphorus (BP) with a transition temperature Tc of 3.8 K, independent of the intercalant, whether an alkali or an alkaline earth element, has been reported recently by R. Zhang et al. (2017). However, the reported Tc and the field effect on the superconducting (SC) transition both bear great similarities to those for the pure Sn, which is commonly used for BP synthesis under the vapor transport method. We have therefore decided to determine whether a minute amount of Sn is present in the starting high purity BP crystals and whether it is t","authors_text":"(2) Department of Physics, Bing Lv (2), Ching-Wu Chu (1) ((1) Department of Physics, Dezhi Wang (1), Fei Tian (1), Hanming Yuan (1), Houston, Hui Wang (1), Jingying Sun (1), Liangzi Deng (1), Richardson, Sheng Li (2), Shuo Chen (1), Shuyuan Huyan (1), Texas, Texas), Texas Center for Superconductivity, University of Houston, University of Texas at Dallas, Yizhou Ni (1), Ze Yang (1), Zheng Wu (1), Zhifeng Ren (1)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2017-12-18T23:15:00Z","title":"Investigation on the reported superconductivity in intercalated black phosphorus"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1712.06716","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:c5d94e876a2cd4cb5643f12f2510703f50ce828077414d2909c55f10ea785bc9","target":"record","created_at":"2026-05-18T00:20:16Z","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":"b8c55edfe473ab70fa3383be45fca4e0a1cd3937bc364dd0933603870effb6b2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2017-12-18T23:15:00Z","title_canon_sha256":"d888d3b54359a78691caf1b1958b2fe38086b10691e15d7b780c6dd20c7feef7"},"schema_version":"1.0","source":{"id":"1712.06716","kind":"arxiv","version":1}},"canonical_sha256":"f640a8b90266a2110e05de2f3124998fa001efaecfb9843b0e9c367083769b16","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f640a8b90266a2110e05de2f3124998fa001efaecfb9843b0e9c367083769b16","first_computed_at":"2026-05-18T00:20:16.273747Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:20:16.273747Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"IZNoA+84u/K5Ss/gLe3mx5SgXPl2sqCKkH7oeB4qvhosg5ZP6Y5hYU3ny6+i/0FPJxDka+eyMPHISPZJx+ilBA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:20:16.274337Z","signed_message":"canonical_sha256_bytes"},"source_id":"1712.06716","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c5d94e876a2cd4cb5643f12f2510703f50ce828077414d2909c55f10ea785bc9","sha256:c8b034c8d8a6f8d874d6b3c718573179f5bcc9c120d9dc71f253355542550418"],"state_sha256":"de01ba78fa98f22c56ec60742a58cd12849b844db67afafe29d925cf6a563b60"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LGbvj7hDWBy8lY0uGGeWpkewrvq5pVmnFZPr6sPp77tPShLYl4md2sIdACyFTWG7h0dgfpoSKpojBzqX9pVoBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T13:01:34.494268Z","bundle_sha256":"8fb37cbae1517080b6debc037731b1eb780c05bdef99915c7081ebd51ffa852e"}}